Non-lathering personal care composition in the form of an article.

(54) Title: NON-FOAMING COMPOSITION FOR PERSONAL CARE IN THE FORM OF AN ARTICLE. (54) Title: NON-LATHERING PERSONAL CARE COMPOSITION IN THE FORM OF AN ARTICLE.

(57) Summary

A non-foaming personal care article in the form of a soluble porous solid structure, the article comprises: from about 0% to about 10% ionic surfactant; from about 1% to about 60% of a non-surfactant cosmetic active; from about 15% to about 70% of polymeric structuring agent, further characterized in that the polymeric structuring agent has a weight average molecular weight of from about 40,000 to about 500,000; and from about 1% to about 30% plasticizer. The article has a density of about 0.03 g / cm3 to about 0.15 g / cm3.

(57) Abstract

A non-lathering personal care article in the form of a porous dissolvable solid structure, comprising: from about 0% to about 10% ionic surfactant; from about 1% to about 60% of a non-surfactant cosmetic active; from about 15% to about 70% polymeric structurant, where the polymeric structurant has a weighted average molecular weight of from about 40,000 to about 500,000; and from about 1% to about 30% plasticizer. The article has a density of from about 0.03 g / cm3 to about 0.15 g / cm3.

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Institute

Mexican

Property

Industrial

PATENT TITLE NO. 337657

Headlines):

Home:

Denomination:

Classification:

Inventor (s):

THE PROCTER &amp; GAMBLE COMPANY

One Procter &amp; Gamble Plaza, Cincinnati, Ohio, 45202, USA

NON-FOAMING COMPOSITION FOR PERSONAL CARE IN TH E FORM OF AN ARTICLE I.C. 8: B29C44 / 40

ROBERT WAYNE GLENN; JAMES MERLE HEINRICH; KATHLEEN MARY KAUFMAN; JOANNE ROBERTA WILLMAN

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Lap 4e reference

Det informatie with the article cont the from the façade derqfoos scscnbe the present tfilo hacdcon Fundamental Industrial Property (Diario C cial de la adoración (DOF) i 26 / C '2004, 06/16/2005. 25/0' ' 006, 06 / I / 2009,06 / 01/2010, 1 part 01/0 of the Ins

to). 4th and 12th sections and III of the Mexican statute of the Propn '004 and 7 / &lt;

regulations of the Mexican Institute ¹ go frnr,

7 »bis 2 of I and 996, 12/26/1997, 17, 5/1999, 12); Articles 1 ·, 3 · í xión V industrial (DOF 14/12/1999, refo tado el rgánlco 1 °, 3 'Industrial property 12/27/1999, returned w / το / ζοοζ, 29 / U // 2UU4, 04 / uh / 2U04 and ibi and 5th paragraph a) of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Holders of the Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).

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Arenal No. 550, Floor 1,

Col. Pueblo Santa María Tepepan, Xochimílco, ZIP 16020

Mexico City

Tel (55) 53 34 07 00 www.impi.gob mx

Issue date: March 14, 2016. Λ »Did I see:

DIRECTOR DIVISIONAODE PATENTES

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NAHANNY CANAL REYES

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MX / 2016/21400

J _____ - _ instituto MexiCANg

NON-FOAMING COMPOSITION RARE PERSONAL CARE ÉITféÓ &amp; MÁ Dt

AN ARTICLE

FIELD OF THE INVENTION

The present invention relates to non-foaming personal care compositions, especially those personal care compositions in the form of an article which is a solid, soluble and porous structure.

BACKGROUND OF THE INVENTION

Most of the personal care products on the market today are sold as liquid products. Although they are widely used, liquid products have disadvantages in terms of packaging, storage, transport and ease of use.

Liquid personal care products are typically sold in bottles that add significant costs as well as packaging waste, many of which end up in landfills. Liquid personal care products also typically contain a substantial amount of water in the formula, which adds significant size and weight resulting in higher shipping and storage costs. Liquid personal care products can also be difficult to use in terms of dosing control and product supply.

It is an object of the present invention to provide a soluble, non-foaming personal care product that can be quickly and easily dissolved in the consumer's palm to reconstitute a liquid product that facilitates

INSTITUTO ΜEXICANO tic *** DS THE PROPERTY ^ν^&gt; ^ INDUSTRIAL application to hair and / or skin, while providing sufficient topical fiiiminjstrp rfe active agents for topical applications to hair and / or skin. A further object of the present invention is to provide a product that can be produced economically by physical aeration followed by drying.

Existing soluble personal care films comprise a water soluble polymeric structuring agent and active ingredients. However, in order to achieve the fast dissolution rates required for consumer convenience, these films are generally on the order of less than 100 microns thick (typically 50 microns), and thus are generally too low a basis weight (typically 50-100 grams of solid per square meter) to allow consumer application of a sufficient dose of active ingredients for performance and application to the entire body or all hair, i.e. beyond smaller dose applications such as hand cleansing and / or facial applications.

Relatively high basis weights are required to achieve a dose of raw materials within the consumer's palm sufficient for full-head and full-body applications, requiring objects with a significant third dimension (thickness) relative to thin films. Furthermore, it has also been found that in order for these objects with a considerable third dimension to dissolve quickly in the consumer's palm to reconstitute a liquid product that facilitates application to the hair and / or skin, they do not only comprise a water soluble polymeric structurant together with the active ingredients, They are also in the form of a highly porous, predominantly open-celled solid structure (compared to closed-celled). Such water soluble porous solids, comprising predominantly open cells, are believed to enable rapid water flow, IMPI ^

O MEXICAN INSTITUTE 'f &amp; t

OF PROPERTY V% ·

INDUSTRIAL within the framework exposing a multiplicity of additional solid surface areas to achieve greatly increased dissolution rates. This is in contrast to water soluble porous solids comprised of predominantly closed cells in which the vast majority of Interior cell surfaces are not rapidly exposed to water during wetting, with a solution that predominantly progresses through surface erosion and results in a slower dissolution.

The production of such rapidly soluble open cell porous solid structures by physical aeration typically requires significant surfactant as a production medium to generate the Initial wet foam which can then dry to the porous solid. For cleaning applications, i.e. personal cleansing and hair shampoos, this is not a problem as this surfactant is also consistent with the desired performance of the cleaning product (i.e. foaming). However, for non-cleaning applications, i.e. hair conditioning, styling, shower body lotions, etc., this surfactant may be problematic as it may adversely affect the deposition of the expected hydrophobic actives on the hair and skin. as well as giving the user unwanted foam / foam cloning / noise creating signals during use, that are not consistent with the expected care functions of these products (conditioning, coating, deposit, hydration, styling, etc.).

Therefore, it is an objective of the present invention to discover a means of production of porous solids by physical aeration (foam), and also to make possible the formation of a predominantly open-cell foam for rapid dissolution, with minimal surfactant, such that the resulting rapidly soluble porous solid is practically non-foaming.

Freeze-drying of aqueous solutions of polymeric structuring agents

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Water soluble with other active ingredients is a known method of producing oolides or porools with predominantly open cells that rapidly disperse or dissolve, by sublimation of the water in the aqueous mixture, leaving behind a skeleton of the dried polymeric structuring agent. However, lyophilized porous solids typically lack plasticizing agents, making them stiff and less desirable. Additionally, lyophilization is an expensive and less feasible process for economical, large-scale production of personal care applications. Other traditional soluble personal care products include porous solids produced by an anhydrous extrusion process and employing volatile blowing agents to produce the cell structure by expansion of the solid induced by a high pressure drop. However, this process is limited to anhydrous surfactants of solid origin and ingredients that are limited in number, and makes it more difficult to formulate a personal care product with the desired characteristics and performance. It would be highly desirable to produce porous solids with predominantly open, virtually non-foaming and fast dissolving cells, by physical aeration (high shear mechanical agitation or gas injection) and subsequent drying as a commercially more viable production method relative to lyophilization. However, physical aeration practically results in a high internal phase emulsion of air in water (a closed cell wet foam) which once dried can lead to a closed cell dry foam morphology in which air bubbles they are trapped / enclosed within dry polymeric film sheets or generally collapse within a film in instances where the foam is unstable.

Therefore, it is an object of the present invention to provide a solid, porous, open-cell, virtually non-foaming, personal care product that can be quickly and easily dissolved in the consumer's palm

IMPI

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in order to reconstitute a liquid product that facilitates application to hair / skin, while providing a topical supply of sufficient active agents for applications to all hair and all skin of the body (with a performance similar to that of of today's liquid products). A further object of the present invention is to provide a product that can be produced by physical aeration followed by drying. Another objective of the present invention is to provide that product with the desired softness and flexibility.

BRIEF DESCRIPTION OF THE INVENTION

A virtually non-foaming personal care article in the form of a soluble porous solid structure comprising from about 0% to about 10% ionic surfactant; from about 1% to about 60% of a non-surfactant cosmetic active; approximately

15% to about 70% polymeric structuring agent, wherein the polymeric structuring agent has a weight average molecular weight of from about 40,000 to about 500,000; and from about 1% to about 30% plasticizer; wherein the article has a density of from about 0.03 g / cm3 to about 0.15 g / cm3.

A suitable premix for use in the manufacture of a non-foaming personal care article that is in the form of a soluble porous solid structure, wherein the premix has from about 15% to about 40% solids, has a viscosity of about 2500 cps to about 30,000 cps, and comprises (i) from about 0% to about 4% ionic surfactant; (ii) from approximately 0.3% to_β IMPI

MEXICAN INSTITUTE

DS THE PROPERTY

INDUSTRIAL approximately 20% of a non-surfactant cosmetic active; (iii) from about 5% to about 25% of polymeric structuring agent, and wherein the polymeric structuring agent has a weight average molecular weight of from about 40,000 to about 500,000; and from about 0.3% to about 10% plasticizer.

A process for forming a non-foaming personal care article in the form of a soluble porous solid structure, wherein the process comprises the steps of: preparing a premix comprising surfactant, dissolved polymeric structuring agent and, optionally, plasticizer, wherein the premix has: approximately

fifteen % to 40% of total solids; and a viscosity of about 2500 cps at

30,000 cps; aerate the premix by introducing a gas into the premix to form an aerated wet premix; giving the aerated wet premix one or more desired shapes to form formed wet premix; and drying the formed wet premix until it has a desired final moisture content, where the moisture content is from about 0.1% to about 15% moisture, to form the personal care article.

DETAILED DESCRIPTION OF THE INVENTION

In all embodiments of the present invention all percentages are by weight of the total composition, unless specifically indicated otherwise. All ratios are weight ratios, unless specifically indicated otherwise. All ranges are global and combinable. The number of significant digits does not express a limitation on the quantities indicated nor on the precision of the measurements. It is understood that all amounts

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Numerics are modified by the word "approximately", unless specifically indicated otherwise. Unless otherwise indicated, all measurements are made at 25 ° C and under ambient conditions, where “ambient conditions” refers to conditions that occur at approximately one atmosphere of pressure and at approximately 50% humidity. relative. With respect to the listed ingredients, all of these weights are based on the level of active, so, unless otherwise indicated, they do not include carriers or by-products that may be included in commercially available materials.

Definitions

The term "porous solid", as used herein, unless otherwise specified, refers to a solid, interconnected polymer-containing matrix that defines a network of spaces or cells that contain a gas, typically a gas such as air. The present invention describes personal care compositions in the form of soluble, open-cell, porous, solid structures, where the spaces or cells are practically interconnected.

As used in the present description, the terms "practically non-foaming" and "non-foaming" are used interchangeably from beginning to end to express a volume of foam from 0 ml to 20 ml.

As used in the present description, "personal care composition" means a composition that can be applied to the keratinous tissue of a mammal without producing undue undesirable effects.

As used herein, "keratinous tissue" refers to keratin-containing layers arranged in the outer protective covering of mammals and includes, but is not limited to, skin, hair, scalp, and nails.

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The term "non-surfactant cosmetic active" or "cosmetic active", as used herein, means one or a mixture of more than one non-surfactant material that, when applied to keratinous tissue of a mammal, provides a benefit to the keratinous tissue. As used in the present description, the terms "non-surfactant cosmetic active" and "cosmetic active" are used interchangeably. The term "non-surfactant cosmetic active" is broad enough to include skin care actives, hair care actives, and beauty benefits; and can be used interchangeably with such terms throughout the present application. Cosmetic actives can provide beauty benefits such as, but not limited to, sebum inhibition, alter the appearance of skin and / or hair, reduce dryness, itching and / or flaking, reduce pore size, exfoliation, peeling, improve the appearance of keratinous tissue, condition, hydrate, smooth, etc.

"Beauty benefit" or "benefit", as used herein with reference to the keratinous tissue of a mammal includes, but is not limited to, cleansing, sebum inhibition, altering the appearance of skin and / or hair , reduce dryness, stinging and / or flaking, reduce pore size, exfoliation, peeling, improve the appearance of keratinous tissue, condition, hydrate, smooth, etc.

The inventors of the present invention have discovered that soluble solid personal care products can be prepared so that they can be quickly and conveniently dissolved in the consumer's palm in order to reconstitute a liquid product that facilitates application to hair and / or hair. skin, while providing a sufficient topical supply of active agents for applications to all hair and all skin of the body (with a performance similar to that of liquid products

IMPI

<img file="MX337657B_D0012.tif" />

conventional). It has also been found that these products can be produced economically by physical aeration followed by drying. AdlClüTiairnfJfíltí ',¹ Stí has ​​discovered that such products can now be produced with the desired softness and flexibility and are virtually non-foaming.

To achieve the objectives of the present invention mentioned above it has been discovered that a flexible personal care article can be manufactured in the form of a soluble porous solid structure comprising Ionic surfactant (from about 0% to about 10% anionic surfactant, in a modality from about 0% to about 6%, and in another mode from about 0% to about 3%); a non-surfactant cosmetic active (from about 1% to about 60% cosmetic active, in one embodiment from about 5% to about 50%, and in another embodiment from about 10% to about 40%); a polymeric structuring agent comprising one or more water soluble polymers (from about 15% to about 70% by weight of polymeric structuring agent, in one embodiment from about 22.5% to about 60%, and in another embodiment from about 30 % to about 50%); and a plasticizer (from about 1% to about 30% plasticizer, in one embodiment from about 3% to about 24%, and in another embodiment from about 5% to about 20%); and where the soluble porous solid structure has a density of approximately 0.03 g / cm³ at about 0.15 g / cm³, in a mode of approximately 0.04 g / cm³ at about 0.12 g / cm³, and in an alternative modality of approximately 0.06 g / cm³ at about 0.10 g / cm³.

In another embodiment, the personal care item has a basis weight of approximately 125 grams / m.² at about 1000 grams / m², in another modality

IMPI0

MEXICAN INSTITUTE ψ. V = INDUSTRIAL * PROPERTY of approximately 150 grams / m² at about 800 plows / m², in an alternative modality, of approximately 200 grams / m² at about 700 grams / m², and still in another modality of approximately 300 grams / m² at approximately 650 grams / m²; and a thickness, as defined herein, of from about 0.5mm to about 10mm, in an embodiment of from about 1mm to about 7mm, and in an alternative embodiment, from about 2mm to about 6mm. In a further embodiment, the personal care article is produced by the process comprising the steps of preparing a premix comprising surfactant, dissolved polymeric structuring agent and, optionally, plasticizer, wherein the premix has: approximately

15% to 40% of total solids; and a viscosity of about 2,500 cps to 30,000 cps; and aerating the premix by introducing a gas into the premix to form an aerated wet premix; and then giving the aerated wet premix one or more desired shapes to form a shaped wet premix; and then drying the formed wet premix until it has a desired final moisture content, where the moisture content is from about 0.1% to about 15% moisture, to form the personal care article.

In accordance with still another embodiment of the present invention, the polymeric structuring agent comprises one or more water soluble polymers wherein at least one of the polymers has a weight average molecular weight of from about 40,000 to about 500,000, in another embodiment. from approximately 50,000 to approximately 400,000, in an alternative modality, from approximately 60,000 to approximately 300,000, and still in another mode from about 70,000 to about 200,000.

In a particular embodiment, at least one of one or more is chosen

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MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL water soluble polymers such that a 2 wt% aqueous solution of the water soluble polymer produces a viscosity at 20 ° C of from about 4 centipoise to about 80 centipoise; in an alternate mode, from about 5 centipoise to about 70 centipoise; and in another embodiment, from about 6 centipoise to about 60 centipoise.

In another embodiment, the flexible personal care article in the form of a soluble porous solid structure comprises, in one embodiment, from about 1% to about 50% of a non-ionic surfactant, and in another embodiment from about 5% to about 45 % nonionic surfactant, and in another embodiment from about 10% to about 40% nonionic surfactant.

In another embodiment, the flexible personal care article in the form of a soluble porous solid structure comprises from about 1% to about 50% of a polymeric surfactant, in another embodiment from about 5% to about 45% of polymeric surfactant, and still in another embodiment, from about 10% to about 40% of polymeric surfactant.

In the present invention, rapidly dissolving, virtually non-foaming porous solids, with a predominantly open and interconnected cell structure, can be produced by physical aeration followed by drying (as an alternative to conventional lofilling). This can be accomplished by generating a physically aerated wet foam with a controlled degree of foam instability during the drying process, so that the thin film bubble outer layers drain into the plateau edges simultaneously with drying / soldering. , resulting in a plurality of open channels ("holes"

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and "columns") and, in particular, without the collapse of the foam structure during the drying process, thus maintaining the physical resistance and cohesion of the solid. Furthermore, it has been found that this instability and coalescence can be manipulated in a controllable way so that the original closed-cell wet foam is transformed within the multi-hour drying process into a true open-cell porous structure, where the plurality of channels open extends to the surface of the solid surface. Historically, when attempting to generate such products the results were stable wet foams that dried as conventional closed cell solid foams or unstable wet foams that dried as collapsed films. It was also surprising and non-intuitive to discover that aeration to the initial wet foam before drying (a lathering process) can surprisingly be accomplished in such a way as to produce the open cell porous structure that is required, but with the resulting fast dissolving article Virtually no foaming during consumer use. This phenomenon has been achieved by employing special surfactants and surfactant combinations that make foam (foam generation) possible under the high-energy processing conditions employed during aeration to produce the structure, but which are virtually non-foaming (little to no generation). foam) under consumer low-energy usage conditions when solids undergo dissolution. It has been found that these two incompatible performance requirements can be achieved by (i) minimizing the presence of ionic surfactants, (ii) maximizing the presence of non-ionic surfactants and / or polymeric surfactants, (iii) minimizing overall surfactant levels required for the aeration process, and (¡v) combinations of these.

Such open-cell, virtually non-foaming soluble porous solids prepared by physical aeration followed by drying have been found to

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MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL can only be achieved within a narrowly defined Rheological Interval, as defined above. Achieving the required Range of relatively low viscosity is problematic due to the typically high levels of polymeric structuring agent required for the integrity and cohesion of the solid, as well as the desire for minimal water content (to minimize drying times and energy required for production). In order to achieve the required relatively low viscosity range of the present invention while producing integral and adherent solid structures, it has been discovered that various compositional strategies can be employed, both alone and together, including, but not limited to: ( i) employing water soluble polymers within the required molecular weight range, but with relatively low viscosity constructed as defined herein; (ii) dilute the processing mixture with water; (iii) add electrolyte or hydrotrope to manipulate viscosity; (iv) add non-ionic surfactants that achieve a rheology lowering effect, or (v) add low molecular weight solvents to manipulate the viscosity. To a large extent, aeration of processing mixtures below the required viscosity range results in undesirable non-cohesive porous solids.

It has also been discovered that the features of the present invention described above can be delivered by the production of the open cell porous structures employing either semi-continuous or continuous aeration equipment from the food industry, which is used for the manufacture of marshmallows and marshmallows. dehydrated.

L_Composition

Non-surfactant cosmetic assets

MEXICAN INSTITUTE K OF THE EROWF.DAD INDUSTRIAL CV

The soluble personal care articles of the present invention may include any appropriate cosmetic active. Such assets may include, but are not limited to, hair and skin conditioning agents, hair coloring agents, hair bleaching agents, hair styling agents, dermoactives, perfumes, agents that can be heated by yes alone, anti-dandruff agents, hair dyes, shaving lotion actives, sunscreen actives, insect repellent actives, rash lotion actives, antlacné actives, hair straightening actives, perming actives, antimlcroblanos actives, skin tanning actives, skin restorative actives, hair brightening actives, skin make-up actives, and combinations of these. Furthermore, the article may comprise agents to stimulate hair growth and / or promote the appearance of thicker and / or thicker hair. Such materials may include, but are not limited to, mlnoxldll; nlaclnamlda, panthenol and caffeine cocktails; and mixtures of these.

A. Conditioning agents

The soluble personal care solids of the present invention may comprise an active agent comprising one or more conditioning agents suitable for application to the hair. In a particular embodiment, conditioning agents are selected from the group consisting of high melting point fatty compounds, sllicones, amyl amines, acids, low melting point oils, waxes, cationic polymers, and cationic surfactants. The high melting point fatty compound is Incorporated in such a way and in conjunction with the other Ingredients to supply a gel matrix that is appropriate to deliver various conditioning benefits such as a smooth, slippery feel to damp hair, and a for softness, wetting and volatility control on dry hair.

iMPie _c MEXICAN INSTITUTE K

DELA PROPERTY V

INDUSTRIAL '

The fatty compound with a high melting point of use in the prooon has a melting point of 25 ° C or more and is selected from the group consisting of fatty alcohols, fatty acids, derivatives of fatty alcohols, derivatives of fatty acids and mixtures of these. Non-limiting examples of high melting point compounds are given in International Cosmetic Ingredient Dlctlonary, Fifth Edition, 1993, and in CTFA Cosmetic Ingredient Handbook, Second Edition, 1992.

Fatty alcohols useful herein are those having from about 14 to about 30 carbon atoms and, in another embodiment, from about 16 to about 22 carbon atoms. These fatty alcohols are saturated and can be straight or branched chain alcohols. Non-limiting examples of fatty alcohols include cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.

Fatty acids useful herein are those having from about 10 to about 30 carbon atoms, in one embodiment from about 12 to about 22 carbon atoms, and in another embodiment from about 16 to about 22 carbon atoms. These fatty acids are saturated acids and can have straight or branched chains. Diacids, trlacids, and other multiple acids that meet the requirements herein are also included. Also included here are the salts of these fatty acids. Non-limiting examples of fatty acids include lauric acid, palmitic acid, stearic acid, behenic acid, sebacic acid, and mixtures thereof.

Fatty alcohol derivatives and fatty acid derivatives useful herein include alkyl ethers of fatty alcohols, alkoxylated fatty alcohols, alkoxylated fatty alcohol alkyl ethers, fatty alcohol esters, fatty acid esters of compounds having esterifiable hydroxy groups, fatty acids substituted with

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MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL hydroxy and mixtures of these. Non-limiting examples of fatty alcohol and fatty acid derivatives include materials such as methyl stearyl ether; the ceteth series of compounds such as ceteth-1 to ceteth-45, which are cetyl alcohol ethylene glycol ethers, where the numerical designation indicates the number of ethylene glycol moieties present; esteareth series of compounds such as esteareth-1 to 10, which are ethylene glycol ethers of esteareth alcohol, where the numerical designation indicates the number of ethylene glycol entities present; ceteareth 1 to ceteareth-10, which are the ethylene glycol ethers of ceteareth alcohol, that is, a mixture of fatty alcohols containing predominantly cetyl and stearyl alcohol, where the numerical designation indicates the number of ethylene glycol entities present; CpCso alkyl ethers of the described ceteth, esteareth, and ceteareth compounds; polyoxyethylene ethers of behenyl alcohol; Ethyl stearate, Cetyl stearate, Cetyl palmitate, Stearyl stearate, Myristyl myristate, Ether cetyl polyoxyethylene stearate, Stearyl ether polyoxyethylene stearate, Polyethylene lauryl ethylene glycol ester, Ethylene glycol monoestearate propylene glycol monostearate, propylene glycol distearate, trlmethylolpropane distearate, sorbitan stearate, polyglyceryl stearate, glyceryl monostearate, glyceryl distearate, glyceryl triestearate, and mixtures thereof.

High melting point fatty compounds of a single high purity compound are useful herein. Simple compounds of pure fatty alcohols can be selected from the group of pure cetyl alcohol, stearyl alcohol, and behenyl alcohol. By "pure" in the present description, what is meant is that the compound has a purity of at least about 90% and, in another embodiment, about 95%. These simple, high-purity compounds provide good hair rinse properties when the consumer removes the composition by

INSTITUTO MElUCAl'.ü DE LA PROPERTY

INDUSTRIAL rinse.

Commercially available high melting point fatty compounds include: cetyl alcohol, stearyl alcohol and behenyl alcohol under the trade names of KONOL series available from Shin Nihon Rika (Osaka, Japan), and NAA series available from NOF (Tokyo, Japan); pure behenyl alcohol under the tradename 1-DOCOSANOL available from WAKO (Osaka, Japan), various fatty acids under the tradename NEO-FAT available from Akzo (Chicago Illinois, USA), HYSTRENE available from Witco Corp. (Dublin Ohio , USA) and DERMA available from Vevy (Genova, Italy).

The hair conditioning actives of the present invention may further comprise an amidoamine of the following general formula:

R¹ CONH (CH2) m N (R²) 2 where R¹ is a fatty acid residue from Cu to C24, R² is a Ci to C4 alkyl and m is an integer from 1 to 4.

Amidoamine, along with acids, can function as a cationic surfactant in the composition of the present invention. It is believed that: when used in the composition of the present invention, amidoamine can deliver an improved reservoir of silicones, especially aminosilicones, compared to other cationic surfactants such as stearyltrimethylammonium chloride. It is also believed that; The composition of the present invention can provide improved conditioning benefits such as softness and smoothness due to improved silicone deposition. It is also believed that; The compositions of the present invention can provide reduced fluffiness in addition to softness and smoothness.

<img file="MX337657B_D0021.tif" />

IMPI

Amidoamines useful herein include stearamidopropyldimethylamine the, stearamidopropyldiethylamine, stearamidoethyldiethylamine, stearamidoethyldimethylamine, palmitamidopropyldimethylamine, palmitamidopropyldiethylamine, palmitamidoetildietilamina, palmitamidoethyldimethylamine, behenamidopropyldimethylamine, behenamidopropildietilamina, behenamidoetildietilamina, behenamidoetildimetilamina, arachidamidopropyldimethylamine, araquidamidopropildietilamina, arachidamidoethyldiethylamine, arachidamidoethyldimethylamine, and mixtures thereof; and in another embodiment, stearamidopropyl dimethylamine, stearamidoethyldiethylamine, and mixtures thereof.

Commercially available amidoamines useful in the present disclosure include: stearamidopropyl dimethylamine under the tradename SAPDMA available from Inolex, and the tradename Amidoamine MPS available from Nikko, and behenamidopropyl dimethyl amine under the tradename IncromineBB available from Croda. Without being bound by theory, behenamidopropyl dimethylamine is believed to provide improved moisture tolerance to hair in the demarcated circumstance compared to the other shorter alkyl chain amidoamines. Behenamidopropyl dimethylamine is believed to provide reduced fluffiness and / or volatility on a rainy and / or humid day.

The hair conditioning actives of the present invention may comprise an acid selected from the group consisting of L-glutamic acid, lactic acid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid, L-glutamic acid hydrochloride, acid tartaric, citric acid, and mixtures thereof; in another embodiment, L-glutamic acid, lactic acid, citric acid, and mixtures of these. The molar ratio of amidoamine to acid may, in one embodiment, be from about 1: 0.3 to about 1: 1.3, and in another embodiment from about 1: 0.5 to about ι₈ 'ΙΜΡΠ

MEXICAN INSTITUTE ¥

SAY THE MOPITIA V

INDUSTRIAL

1:1.0.

The hair conditioning actives of the present invention may comprise one or more silicones including high molecular weight polyalkylsiloxanes or polyarylsiloxanes and silicone rubbers; lower molecular weight polydimethylsiloxane fluids; and aminosilicones.

In one embodiment the high molecular weight polyalkylsiloxanes or polyarylsiloxanes and silicone rubbers have a viscosity of from about 100,000 mPa.s to about 30,000,000 mPa.s at 25 ° C, in another embodiment from about 200,000 mPa.s to about 30,000,000 mPa.s, and in another embodiment a molecular weight of about 100,000 to about

1,000,000, and in another modality from approximately 120,000 to approximately 1,000,000.

Higher molecular weight silicone compounds useful in the present disclosure include polyalkylsiloxanes or polyarylsiloxanes with the following structure:

„93

RR

I Γ I ζ-Si — O — Si — o, 93

R

-Yes-Z⁸ 93 .93 where R⁹³ it is alkyl or aryl, and p is an integer from about 1300 to about 15,000, and in another embodiment from about 1600 to about 15,000. Z⁸ represents groups that block the ends of silicone chains. Alkyl or aryl groups substituted on the siloxane chain (R⁹³) or at the ends of siloxane chains Z⁸ can have any structure as long as the

IMPIfe

MEXICAN INSTITUTE

Say THE PROPERTY C »

INDUSTRIAL resulting silicone remains fluid at room temperature, is dispersible, is not irritating, toxic or harmful when applied to hair, is compatible with the other components of the composition, is chemically stable during normal use and storage and is capable of being deposited and to condition the hair. Z groups⁸ Suitable include hydroxy, methyl, methoxy, ethoxy, propoxy, and arlloxl. The two groups

R⁹³ in the silicon atom they can represent the same group or different groups. In one modality the two R groups⁹³ they represent the same group. R groups⁹³ Suitable include Methyl, Ethyl, Propyl, Phenyl, Methylphenyl and Phenmethyl. In one embodiment the silicone compounds are polydimethylsiloxane, polldletllslloxane, and polylmethylphenylsiloxane.

Polydimethylsiloxane, which is also known as dlmetlcona. Commercially available, these silicone compounds useful herein include, for example, those available from the General Electric Company in its TSF451 series, and those available from Dow Corning in its Dow Corning SH200 series.

Silicone compounds that can be used herein also

They include a silicone rubber. The term "silicone rubber", as used in the present description, refers to a polyorganosiloxane material with a viscosity at 25 ° C greater than or equal to 1,000,000 mPa.s. It is recognized that the silicone rubbers described herein may also overlap with the silicone compounds described above. This overlap is not intended to be a limitation for any of these materials. "Silicone rubbers" will typically have a molecular weight greater than about 165,000, generally from about 165,000 to about 1,000,000. Specific examples include polydimethylsiloxane, polydimethylsiloxane copolymer metllvlnllsiloxane), polydimethylsiloxane copolymer dlfenilsiloxane metllvlnllsiloxane) and mixtures thereof. Commercially distributed silicone rubbers useful herein Include, for example, TSE200A distributed by General

<img file="MX337657B_D0022.tif" />

IMPI

Mexican Institute of Industrial Property

Electric.

In one embodiment the lower molecular weight silicones have a viscosity of from about 1 mPa.s to about 10,000 mPa.s at 25 ° C, in another embodiment, from about 5 mPa.s to about 5000 mPa.s, and in one embodiment a molecular weight from about 400 to about 65,000, and in another embodiment from about 800 to about 50,000.

Lower molecular weight silicone compounds useful herein include polyalkullsiloxanes or polaryllsloxanes with the following structure:

R⁹³

ZS¡ — O · „93

RR ¹ 1 ¹ 8 -Yes — O — Yes-Z .93 .93

R '.93 where R⁹³ is alkyl or aryl, and p is an integer from about 7 to about 850, and in another embodiment from about 7 to about

665. Z⁸ represents groups that block the ends of silicone chains. Alkyl or aryl groups substituted on the slloxane chain (R⁹³) or at the ends of the slloxane Z chains⁸ they can have any structure as long as the resulting silicone remains fluid at room temperature, is dispersible, is not irritating, toxic or harmful when applied to hair, is compatible with the other components of the composition, is chemically stable during use and storage normal and capable of being deposited and conditioning the hair. Z groups⁸ Suitable include hydroxy, methyl, methoxy, ethoxy, propoxy, and aryloxy. The two R groups⁹³ in the silicon atom they can represent the same group or different groups.

In one embodiment, the two R groups⁹³ they represent the same group. R groups⁹³

Ha i

MEXICAN INSTITUTE Vk ^ jSSSi OF THE «UOMEDAD Obc ^ B

INDiJSÍ.ÜAL &lt;«i suitable include methyl, ethyl, propyl, phenyl, methylphenyl and phenylmethyl. Silicone compounds useful in the present disclosure include polydimethylsiloxane, polydiethylsiloxane, and polymethylphenylsiloxane. In one embodiment, the silicone is polydimethylsiloxane, which is also known as dimethicone. Commercially available, these silicone compounds useful herein include, for example, those available from General Electric

Company on its TSF451 series and those available from Dow Corning on its Dow Corning SH200 series.

In one embodiment, the active agent of the present invention includes one or more aminosilicones. Aminosilicones, as provided herein, are silicones that contain at least one primary amino, secondary amino, tertiary amino, or quaternary ammonium group. In one embodiment, the aminosilicones may have less than about 0.5% nitrogen by weight of the aminosilicone, in another embodiment less than about 0.2%, in yet another embodiment less than about 0.1%. Higher nitrogen levels (aminofunctional groups) in aminosilicone tend to result in less friction reduction and, consequently, less aminosilicone conditioning benefit. It should be understood that in some product forms the highest levels of nitrogen are acceptable in accordance with the present invention.

In one embodiment the aminosilicones used in the present invention have a particle size of less than about 50 µ once they have been incorporated into the final composition. The particle size measurement is taken from scattered droplets in the final composition. Particle size can be determined by means of a laser light scattering technique using a Horiba model LA-910 laser light scattering particle size distribution analyzer equipment (Horiba Instruments, Inc.).

In one of the embodiments, the aminosilicone has a viscosity of

<img file="MX337657B_D0023.tif" />

<img file="MX337657B_D0024.tif" />

INSTITUTE ΜΙγΧΙ.'ΛΜΡ DI Industrial PROPERTY about 1000 is (centistoke) to about 1,000,000 un, nn ntm. mode of about 10,000 is to about 700,000 is, still in another mode of about 50,000 is to about 500,000 is, and still in another mode of about 100,000 is to about 400,000 is. This embodiment may also comprise a low viscosity fluid, such as, for example, those materials described below in Section F. (1). The viscosity of the aminosilicones described in this description is measured at 25 ° C.

In another embodiment the aminosilicone has a viscosity of about 1000 is to about 100,000 is, in another embodiment of about 2000 is to about 50,000 is, in another embodiment of about 4,000 is to about 40,000 is, and in yet another embodiment of about 6,000 is to approximately 30,000 is.

The aminosilicone may be contained in the composition of the present invention at a weight level of from about 0.05% to about 20% in one embodiment, from about 0.1% to about 10% in another embodiment, and from about 0.3% to about 5% in yet another modality.

Examples of the aminosilicones for use in the embodiments of the present invention include, but are not limited to, those corresponding to the general Formula (II):

(R¹) aG3.a-Si - (- OSiG2) n - (- OSiGb (R¹)2._b)_m-OS¡G₃._to(R¹)_to (¡) Where G is hydrogen, phenyl, hydroxy or Ci-C alkyl₈, and in a methyl embodiment; to is

<img file="MX337657B_D0025.tif" />

INSTITUTO MEXICANO DE LA FRG?! EDAD INDUSTRIAL or an integer with a value from 1 to 3, and in one modality is 1; b is 0, 1 or 2, and in one embodiment it is 1; where, when a is 0, b is not 2; n is a number from 0 to 1999; m is an integer from 0 to 1,999; the sum of n and m is a number from 1 to 2000; a and m are not both 0; R¹is a monovalent radical corresponding to the general formula CqH2qL, where q is an integer with a value of 2 to 8 and L is selected from the following groups: -N (R²) CH2-CH₂N (R²)2; -N (R²)2; -N (R²)⁺3A; -N (R²) CH2-CH2-N R²H2A; where R² it is hydrogen, phenyl, benzyl or a saturated hydrocarbon radical, and in one embodiment it is an alkyl radical from about Ci to about C₂₀; A is a halide ion;

Some slllconas to be used herein may include those amlnoslllconas that correspond to Formula (I), where m = 0, a = 1, q = 3, G = methyl, n is in a mode from about 1500 to about 1700 , in another embodiment it is approximately 1600; and L is -N (CH₃)₂ or -NH₂, and in one modality is -NH₂. Other amlnoslllconas may include those corresponding to Formula (I), where m = 0, a = 1, q = 3, G = metllo, n is in one embodiment from approximately 400 to approximately 600, in another embodiment is approximately 500 ; and L is -N (CH₃)₂ or -NH₂, still in another modality is -NH₂. These ammonosylones can be referred to as terminal amylnosylcones, since one or both ends of the sllcone chain end in a nitrogen-containing group.

An Illustrative amlnosllicone corresponding to Formula (I) is the polymer known as "trlmetllsllllamodlmetlcona", which is described below in Formula (II):

IMPI

<img file="MX337657B_D0026.tif" />

-os¡ (CT = r ^ r (CH₃)₃YES-

<td>ch₃</td><td></td><td>ch₃</td>

<td>-Yes</td><td></td><td>p. O i</td>

<td></td><td></td><td>..... Ol -</td>

<td>ch₃</td><td></td><td>(CH₂)₃</td>

<td></td><td>n</td><td> |</td>

<td colspan="2"></td><td>NH</td>

<td colspan="2"></td><td>(CH₂)₂</td>

<td colspan="2"></td><td>nh₂</td>

(II) where n is a value from 1 to 1999, and m has a value from 1 to 1999.

The active agent of the present invention can also include low melting point oils with a melting point less than 25 ° C. The low melting point oil useful herein is selected from the group consisting of: hydrocarbon having 10 to about 40 carbon atoms; unsaturated fatty alcohols having from about 10 to about 30 carbon atoms as oleic alcohol;

unsaturated fatty acids having from about 10 to about 30 carbon atoms; fatty acid derivatives; fatty alcohol derivatives; ester oils such as pentaerythritol ester oils, trimethylol ester oils, citrate ester oils, and glyceryl ester oils; poly a-olefin oils; and mixtures of these. Low melting point oils useful herein are selected from the group consisting of: ester oils such as pentaerythritol ester oils, trimethylol ester oils, citrate ester oils, and glyceryl ester oils; poly a-olefin oils; and mixtures of these.

The pentaerythritol ester oils and trimethylol ester oils of the present invention include: pentaerythritol tetraisoestearate,

<img file="MX337657B_D0027.tif" />

IMPI

INSTITUTO MEXICANO OE LA PROPERTY INDUSTRIAL pentaerythritol, trimethylolpropane triisoestearate, trimethylolpropane trioleate, and mixtures thereof. These compounds are distributed by Kokyo Alcohol under the trade names of KAKPTI, KAKTTI and Shin-nihon Rika under the trade names of PTO, ENUJERUBU TP3SO.

Citrate ester oils particularly useful herein include: trilsocetyl citrate under the trade name CITMOL 316 distributed by Bernel, triisoestearyl citrate under the trade name PELEMOL TISC distributed by Phoenix and trioctyldodecyl citrate under the trade name CITMOL 320 distributed by Bernel.

Particularly useful glyceryl ester oils include trilsoestearin under the trade name SUN ESPOL G-318 distributed by Taiyo Kagaku, triolein under the trade name CITHROL GTO distributed by Croda Surfactants Ltd., trilinolein under the trade name EFADERMA-F distributed by Vevy, or under the trade name EFA-GLYCERIDES distributed by Brooks.

Particularly useful cock-olefin oils herein include polydecenes with the trade names of PURESYN 6 with a number average molecular weight of about 500 and PURESYN 100 with a number average molecular weight of about 3000 and PURESYN 300 with a number average molecular weight approximately 6000 available from Exxon Mobil Co.

The cationic polymers useful herein are those with an average molecular weight of at least about 5000, typically, from about 10,000 to about 10 million, and in an embodiment from about 100,000 to about 2 million.

Suitable cationic polymers include, for example, copolymers of vinyl monomers having quaternary ammonium or amino functional groups.

IMPI

<img file="MX337657B_D0028.tif" />

cationic with water soluble spacer monomers, such as acrylamide, methacrylamide, alkyl and dialkyl acrylamides, alkyl and dialkyl methacrylamides, alkylacrylate, alkyl methacrylate, vinyl caprolactone, and vinylpyrrolidone. Other suitable separating monomers include vinyl esters, vindic alcohol (prepared by hydrolysis of polyvinyl acetate), maleic anhydride, propylene glycol, and ethylene glycol. Other suitable cationic polymers useful herein include, for example, cationic celluloses, cationic starches, cassia and cationic guar gums.

Suitable cationic surfactants include, for example, stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, behenyl trimethylammonium chloride, and distearyl dimethylammonium chloride.

Other suitable cationic surfactants may include asymmetric quaternized dialkylammonium salt cationic surfactant. The asymmetric quaternized dialkylammonium salt cationic surfactant may be contained in the composition at a level by weight of, in one embodiment, from about 0.1% to about 10%, in another embodiment from about 0.2% to about 5%, and still in another modality of about 0.4% to about 3% in view of the balance between the feeling of ease of rinsing and benefits of wet conditioning. Use of a higher level of asymmetric quaternized dialkylammonium salt tends to lead to reduced wet conditioning benefits such as reduced slippery feel, while use of a lower level of asymmetric quaternized dialkylammonium salt tends to lead to a reduced feeling of ease for rinsing.

Some of the asymmetric quaternized dialkylammonium salt cationic surfactants useful in the present invention are those with Formula (I):

R ⁷² I © 73

R — N — R

X (I)

<img file="MX337657B_D0029.tif" />

<img file="MX337657B_D0030.tif" />

where R⁷¹ is selected from an alkyl group of 12 to 30 carbon atoms or an aromatic group, alkoxy, chloxyalkyllen, alkyllamide, hydroxyalkyl, aryl, or alkylated with up to about 30 carbon atoms; R⁷² it is selected from an alkyl group of 5 to 12 carbon atoms or an aromatic group, alkoxy, chickenxalkyllen, alkylamlda, hydroxalkyl, arllo or alkylllo with up to about 12 carbon atoms; R⁷³ and R⁷⁴ are independently selected from an alkyl group of 1 to about 4 carbon atoms or an aromatic group, alkoxy, chloxyalkyllen, alkylamide, hydroxyalkyl, arllo or alkylated with up to about 4 carbon atoms; and X 'is a salt-forming anion, such as those selected from halogen radicals (eg, chloride, bromide), acetate, citrate, lactate, glycolate, phosphate, nitrate, sulfonate, sulfate and alkylsulfonate. The alkyl groups may additionally contain carbon and hydrogen atoms, ether linkages, and other groups such as amyl groups. Longer-chain alkyl groups, for example, those of about 12 carbons or more can be saturated or unsaturated and / or be straight-chain or branched. In an R mode⁷¹ is selected from a non-functional alkyl group of 12 to 30 carbon atoms, in another embodiment of 16 to 22 carbon atoms, in yet another embodiment of 18 to 22 carbon atoms, and in yet another embodiment 18 carbon atoms; R⁷² is selected from a non-functional alkyl group of, in one embodiment, 5 to 12 carbon atoms, in another embodiment 6 to 10 carbon atoms, in another embodiment 8 carbon atoms; R⁷³ and R⁷⁴ are independently selected from CH₃, C₂H₅, C₂H₄OH, and mixtures of these; and X is selected from the group consisting of Cl, Br,

CH3OSO3, C2H5OSO3, and mixtures of these. In one modality, R⁷¹ it's an alkyl group

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL saturated non-functionalized straight, and R⁷² it is a saturated alkyl group, branched nn fi inr¡nnai¡7aHn. In another embodiment the branched group of R⁷² it is a straight saturated alkyl group of 1 to 4 carbon atoms, and still in another embodiment 2 carbon atoms.

The aforementioned asymmetric quaternized dialkylammonium salt cationic surfactants provide an improved rinse-off feel compared to quaternized monoalkylammonium salt cationic surfactants, such as trimethylammonium behenyl salts and symmetric quaternized dialkylammonium cationic surfactants, such as salts distearyl dimethylammonium, while still maintaining the balance of wet conditioning benefits like the sliding sensation. Furthermore, it has been found that among the above mentioned asymmetric quaternized dialkylammonium salt cationic surfactants, those having a longer straight saturated alkyl group and a shorter branched alkyl group, together with two more C1-4 alkyl groups, provide an improved balance between the feeling of ease of rinsing and benefits of wet conditioning, compared to other asymmetric quaternized dialkylammonium salt cationic surfactants such as those having a longer branched alkyl group and a shorter straight alkyl group along with two more C1-4 alkyl groups. Furthermore, it has been found that among the aforementioned asymmetric quaternized dialkylammonium salt cationic surfactants having a longer straight saturated alkyl group and a shorter branched alkyl group, those having the shorter branched alkyl of, in one embodiment, 6 to 10 carbon atoms, in another embodiment, 8 carbon atoms, They provide improved balance between rinsing feel and wet conditioning benefits, compared to those with the shortest branched alkyl of more than 11 carbon atoms.

<img file="MX337657B_D0031.tif" />

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL

<img file="MX337657B_D0032.tif" />

It is believed that the use of alkylsulfate, such as methosulfate and ethosulfate as a salt forming anion, may be able to provide better conditioning benefits, especially wet conditioning benefits compared to other salt forming anions.

Non-limiting examples of asymmetric quaternized dialkullamonlo salt cationic surfactants useful herein include: Stearllo ethylhexllo dlmonlo metosulfate available, for example, under the trademark Arquad HTL8-MS from Akzo Nobel having the following structure:

CH₃ bear₃~ ch₃

I

CH₃(CH₂)_1?- N —CH_?CHICH₅)₃CH₃

II ch₃ ch₂ch₃

B. Styling agents

The soluble personal care solids of the present invention may comprise an active agent comprising one or more styling agents suitable for application to the hair. Many such styling polymers are known in the industry, including water-soluble, water-soluble, silicone-graft polymers. These polymers can be prepared by conventional or unknown polymerization techniques, of which one example includes free radical polymerization. Examples of dispersible polymers are described, for example, in US Pat. USA no. 5,391,368. Examples of latex polymers are described in, for example, US Pat. USA no. 4,710,374.

The hair styling polymers suitable for use in the

I jMÍ ΡI

MEXICAN INSTITUTE V OF PROPERTY V

INDUSTRIAL shampoo composition of the present invention include organic hair styling polymers well known in the industry. Organic hair styling polymers can be homopolymers, copolymers, terpolymers, or other higher polymers, but must comprise one or more polymerizable hydrophobic monomers to thereby present the resulting water-insoluble, hydrophobic styling polymer as defined herein. . Therefore, styling polymers may further comprise other hydrophilic and water soluble monomers, provided the resulting styling polymers have the required hydrophobicity and water insolubility.

As used in the present description, the term "hydrophobic monomer" refers to polymerizable organic monomers that can form a water-insoluble homopolymer with similar monomers, and the term "hydrophilic monomer" refers to polymerizable organic monomers that can form with similar monomers a water soluble homopolymer.

The organic hair styling polymers useful herein have an average molecular weight of at least about 20,000, in one embodiment, greater than about 25,000, in another embodiment, greater than about 30,000, still in another embodiment, greater than about 35,000. . There is no upper limit for molecular weight except that which limits the applicability of the invention for practical reasons, such as processing, aesthetic characteristics, ease of formulation, etc. In general, the average molecular weight will be less than about 10,000,000, more generally less than about 5,000,000, and typically less than about 2,000,000. In one embodiment, the average molecular weight will be between approximately 20,000 and approximately 2,000,000, in another embodiment, between approximately 30,000 and approximately

<img file="MX337657B_D0033.tif" />

1,000,000, and still in another modality, between approximately 40,000-and oproyirnadamonte, 500,000.

Organic styling polymers in one embodiment further have a glass transition temperature (Tg) or crystalline melting point (Tm) of at least about -20 ° C, in another embodiment from about 20 ° C to about 80 ° C, still in another mode from about 20 ° C to about 60 ° C. Styling polymers with these Tg or Tm values ​​form styling films on hair that are not excessively viscous or tacky to the touch. As used herein, the abbreviation "Tg" refers to the glass transition temperature of the polymer main chain, and the abbreviation "Tm" refers to the crystalline melting point of the main chain, if for a predetermined polymer there is such a transition. In one modality both the Tg and the Tm, if any, are within the ranges listed above.

Organic styling polymers are carbon chains derived from the polymerization of hydrophobic monomers such as ethylenically unsaturated monomers, cellulose chains, or other carbohydrate derived polymer chains. The main chain may comprise ether groups, ester groups, amide groups, urethanes, combinations thereof, and the like.

Organic styling polymers may further comprise one or more hydrophilic monomers in conjunction with the hydrophobic monomers described herein, provided the resulting styling polymer has the required hydrophobic character and water insolubility. Suitable hydrophilic monomers include, but are not limited to, aerifico acid, methacrylic acid, Ν, Ν-dimethylacrylamide, dimethylaminoethyl methacrylate, quaternized dimethylaminoethyl methacrylate

MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY

<img file="MX337657B_D0034.tif" />

methacrylamide, Nt-butylacrylamide, maleic acid, maleic anhydride and its semi-esters, crotonic acid, itaconic acid, acrylamide, acrylate alcohols, hydroxyethylmethacrylate, diallyldimethylammonol chloride, vinyl ethers, vinylmide, malelmides, polar heterocyclic vinyls, sternesulfonate, allyl alcohol, vinyl alcohol (such as that produced by hydrolysis of vinyl acetate after polymerization), salts of any of the acids and amines listed above, and mixtures of these. Hydrophilic monomers useful in the present invention include acrylic acid, Ν, Ν-dimethylacrylamide, dimethyl amine methyl methacrylate, quaternized dimethylaminoethyl methacrylate, vinylpyrrolidone, the salts of the acids and amines listed above, and combinations thereof.

Hydrophobic monomers suitable for use in the organic styling polymer Include, but are not limited to, acrylic or methacrylic acid esters of C 1 -C 18 alcohols such as methanol, ethanol, methoxyethanol, 1-propanol, 2-propanol, 1-butanol, 2-methyl-1-propanol, 1-pentanol, 2-pentanol, 3-pentanol, 2-methyl-1-butanol, 1-methyl-1-butanol, 3-metll-1-butanol, 1-methyl-1-pentanol, 2-metll-1-pentanol, 3-methyl-1pentanol, t-butanol (2-methyl-2-propanol), clclohexanol, neodecanol, 2-ethyl-1-butanol, 3heptanol, benzyl alcohol, 2-octanol, 6-methyl-1-heptanol, 2-ethyl-1-hexanol, 3,5-dimethyl-1hexanol, 3,5,5-trimet L-1-hexanol, 1-decanol, 1-dodecanol, 1-hexadecanol, 1-octadecanol and the like, alcohols comprising, in one embodiment, from about 1 to about 18 carbon atoms, in another embodiment from about 1 to about 12 carbon atoms; premiere; polystyrene macromer; vinyl acetate; vinyl chloride; vinylidene chloride; vinyl proplonate; alpha-methylstyrene; tbutylstyrene; butadiene; chlorohexadiene; ethylene; propylene vlniltoluene; and mixtures of these. Hydrophobic monomers useful herein include n-butyl methacrylate, isobutyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 225 methacrylate

<img file="MX337657B_D0035.tif" />

<img file="MX337657B_D0036.tif" />

ethylhexyl, methyl methacrylate, vinyl acetate, and mixtures thereof, in an embodiment of t-butyl acrylate, t-butyl methacrylate, or combinations thereof. Surprisingly, it has been found that conventional styling polymers, consisting of copolymers of vlnllpyrrolidone and vinyl acetate, do not exhibit the required curl retention benefits of the present invention.

Styling polymers for use in the shampoo composition in one embodiment comprise from about 20% to 100%, in another embodiment from about 50% to about 100%, in yet another embodiment from about 60% to about 100%, by weight of the hydrophobic monomers, and may further comprise 0 to about 80% by weight of hydrophilic monomers. The particular selection and combination of monomers to be incorporated into the styling polymer will help determine its formulation properties. By appropriate selection and combination of, for example, hydrophilic and hydrophobic monomers, the styling polymer can be optimized to have physical and chemical compatibility with the selected styling polymer solvent, described hereinafter, and with other components of the composition. of shampoo. However, the selected monomer composition of the organic styling polymer should have the styling polymer insoluble in water but soluble in the selected styling polymer solvent, described hereinafter. In this context, the styling organic polymer is soluble in the styling polymer solvent if the organic polymer solubilizes in the solvent at 25 ° C at the polymer and solvent concentrations of the selected shampoo formulation. However, an organic styling polymer solution and styling polymer solvent can be heated to accelerate the solubility of the styling polymer in the styling polymer solvent. Such a polymer formulation for styling and solvent, including the selection of monomers to be used in the polymer

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL

<img file="MX337657B_D0037.tif" />

for stylized, in order to achieve the desired solubility, it is correct within the experiences of a person in the industry.

Examples of organic styling polymers useful in the present invention include t-butyl acrylate / 2-ethylhexyl acrylate copolymers with a weight / monomer weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40, and about 50/50; t-butyl acrylate / 2-ethylhexyl methacrylate copolymers with a weight / monomer weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40, and about 50 /fifty; t-butyl methacrylate / 2-ethylhexyl acrylate copolymers with a weight / monomer weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40 , and approximately 50/50; t-butyl methacrylate / 2-ethylhexyl methacrylate copolymers with a monomer weight / weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40, and about 50 /fifty; t-butyl ethacrylate / 2-ethylhexyl methacrylate copolymers with a monomer weight / weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40, and mixtures of these.

Polymers useful in the present invention are t-butyl acrylate / 2-ethylhexyl methacrylate copolymers with a monomer weight / weight ratio of about 95/5, about 90/10, about 80/20, about 70/30, about 60/40, and about 50/50; t-butyl methacrylate / 2-ethylhexyl methacrylate copolymers with a weight / monomer weight ratio of about 95/5, about 90/10, about 80/20,

<img file="MX337657B_D0038.tif" />

<img file="MX337657B_D0039.tif" />

about 70/30, about 60/40, and about 50/50; and mixtures of these.

Examples of other suitable styling polymers are described in US Pat. USA no. 4,272,511, issued to Papantoniou et al., Issued on June 9, 1981; the US patent USA no. 5,672,576, issued to Behrens et al., Issued on September 3, 1997; and the US patent. USA no. 4, 196,190, issued to Gehman et al., Issued April 1, 1980.

Other suitable hair styling polymers for use in the shampoo composition of the present invention are silicone grafted hair styling resins. These polymers can be used alone or in conjunction with the organic styling polymers described above. Many such polymers suitable for use in the shampoo composition herein are known in the industry. These polymers are characterized by having covalently bonded polysiloxane entities suspended from a non-crosslinked carbon-based backbone.

In one embodiment the backbone of the silicone grafted polymer is a carbon chain derived from the polymerization of ethylenically unsaturated monomers, but may also be cellulose chains or other carbohydrate derived polymer chains from which polysiloxane entities suspend. The backbone can also include ether groups, ester groups, amide groups, urethane groups, and the like. Polysiloxane entities can be substituted in the polymer or can be manufactured by copolymerizing polysiloxane-containing polymerizable monomers (eg, ethylenically unsaturated monomers, ethers and / or epoxides) with polymerizable monomers containing polysiloxane. In one embodiment the silicone graft styling polymers have an average molecular weight of at least about 10,000, in

<img file="MX337657B_D0040.tif" />

one modality, greater than about 20,000, in another modality, greater than_ approximately 35,000, still in another modality, greater than approximately 50,000. In one embodiment, the average molecular weight of the silicone graft styling polymer is less than 300,000, in another embodiment, less than about 250,000, and in yet another embodiment, less than about 150,000.

Silicone graft styling polymers for use in the shampoo composition comprise "silicone-containing monomers" ("polysiloxane-containing"), which form the silicone macromer suspended from the main chain, and silicone-free monomers, which form the organic backbone of the polymer.

In one embodiment the silicone grafted polymers comprise an organic backbone, in another embodiment a carbon backbone derived from ethylenically unsaturated monomers, such as a vinyl polymer backbone, and a polysiloxane macromer (still in another embodiment they are polydialkylsiloxane , in another embodiment polydimethylsiloxane) grafted to the main chain. As used hereafter the term "PDMS" refers to polydimethylsiloxane. In one embodiment the polysiloxane macromer must have an average molecular weight of at least about 500, in another embodiment from about 1000 to about 100,000, in another embodiment from about 2000 to about 50,000, and in yet another embodiment from about 5000 to about 20,000. Contemplated organic backbones include those derived from monomers with polymerizable ethylenic unsaturation, including vinyl monomers; and other condensation monomers (eg, those that polymerize to form polyamides and polyesters), ring-opening monomers (eg, ethyl oxazoline and caprolactone), etc. Backbone-based backbones are also contemplated.

<img file="MX337657B_D0041.tif" />

,₈ IMPI • ÓO MEXICAN INSTITUTE

SAY THE PROPERTY

INDUSTRIAL cellulose, main chains containing ether, etc. _

Suitable silicone graft polymers for use in the shampoo composition comprise monomer units derived from: at least one or more ethylenically unsaturated and free radical polymerizable monomers and at least one or more ethylenically unsaturated monomers, which are polymerizable with free radicals.

Silicone Graft polymers suitable for use in the shampoo composition generally comprise from about 1% to about 50%, by weight, of polysiloxane-containing monomeric units and from about 50% to about 99% by weight, of monomers they do not contain polysiloxane. Non-polysiloxane-containing monomeric units can be derived from the hydrophilic and / or hydrophobic monomeric units described above.

The styling polymer for use in the shampoo composition may, therefore, comprise combinations of the hydrophobic and / or polysiloxane-containing monomer units described herein, with or without hydrophilic comonomers, as described herein. , provided that the resulting styling polymer has the required characteristics, as described in the present description.

Polysiloxane-containing polymerizable monomers Include, but are not limited to, those monomers corresponding to the formula:

X (Y)_n SIR)₍₃._m) Z _m where X is a group with ethylenic unsaturation copolymerizable with the monomers

<img file="MX337657B_D0042.tif" />

hydrophobes described in the present description, such as a vinyl group; Y is a divalent bond group; R is a hydrogen, hydroxyl, lower alkyl (eg, C 1 -C 4), aryl, alkaryl, alkoxy, or alkylamino; Z is a monovalent siloxane polymeric entity with an average molecular weight number of at least about 500, which practically does not react under copolymerization conditions, and is suspended from the vinyl polymer chain described above; n is 0 or 1; and m is an integer from 1 to 3.

These polysiloxane-containing polymerizable monomers have an average molecular weight as described above. Examples of such polysiloxane-containing polymerizable monomers can be found in US Pat. USA no.

6,177,390(31.

Another polysiloxane monomer corresponds to the following formula:

X - CH 2- (CH ₂) s-SKRIh-nr-Zn, where: s is an integer from 0 to about 6, and in one embodiment is 0, 1 or 2; m is an integer from 1 to 3, and in one embodiment it is 1; R 1 is C1-C10 alkyl or O7-C10 alkylaryl, in another embodiment C1-C6 alkyl or C7-C10 alkylaryl, even in another embodiment C1-C2 alkyl; and X and Z are as defined above.

The right silicone graft styling polymers to be

<td>used in</td><td>composition</td><td>shampoo</td><td>a</td><td>modality</td><td>understand</td><td>of</td>

<td>approximately</td><td>50% a</td><td>approximately</td><td> 99 %,</td><td>in other</td><td>modality</td><td>of</td>

<td>approximately</td><td>60% a</td><td>approximately</td><td> 98 %,</td><td>in other</td><td>modality</td><td>of</td>

about 75% to about 95%, by weight of the polymer, of monomeric units that do not contain silicone macromer, for example, all the hydrophobic and hydrophilic monomeric units described in the present description, and in a

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL mode from about 1% to about 50%, in another mode from_ about 2% to about 40%, still in another mode from about 5% to about 25%, of monomeric units containing silicone macromer, for example, units Polysiloxane-containing monomers described in the present disclosure. The level of hydrophilic monomeric units may be, in one embodiment from about 0% to about 70%, in another embodiment from about 0% to about 50%, in another embodiment from about 0% to about 30%, and still another embodiment. from about 0% to about 15%; the level of hydrophobic monomeric units may be in one embodiment from 30% to about 99%, in another embodiment from about 50% to about 98%, in another embodiment from about 70% to about 95%, and still in another embodiment of about 85% to about 95%.

Listed below are examples of some silicone grafted polymers for use in the shampoo composition herein. Each listed polymer is followed by its monomer composition as part by weight of the monomer used in the synthesis:

(i) t-butylacrylate / t-butyl methacrylate / 2-ethylhexyl-methacrylate / PDMS macromer 20,000 molecular weight 31/27/32/10 (ii) t-butylmethacrylate / 2-ethylhexyl-methacrylate / PDMS macromer 15,000 molecular weight 75/10/15 (iii) t-butylmethacrylate / 2-ethylhexyl acrylate / PDMS macromer 10,000 molecular weight 65/15/20 (iv) t-butylacrylate / 2-ethylhexyl acrylate / macromer 14,000 Molecular Weight PDMS-Macromer 77/11/12

<img file="MX337657B_D0043.tif" />

<img file="MX337657B_D0044.tif" />

INSTITUTO MiXICANO DI LA MONEDAD

INDUSTRIAL (v) t-Butylacrylate / 2-ethylhexyl-methacrylate / macromec — EDMSaxaacmmfita 13,000 molecular weight 81/9/10

Examples of other silicone grafted polymers for use in the shampoo composition of the present invention are described in EPO Application 90307528.1, published as EPO Application 0 408 311 A2 on January 11, 1991, by Hayama, et al .; the US patent USA no. 5,061,481, issued October 29, 1991, by Suzuki et al .; the US patent USA no. 5,106,609, Bollch et al., Issued April 21, 1992; the US patent USA no. 5,100,658, Bollch et al., Issued March 31, 1992; the US patent USA no. 5,100,657, Ansher-Jackson, et al., Issued March 31, 1992; the US patent USA no. 5,104,646, Bollch et al., Issued April 14, 1992; the US patent USA series no. 07 / 758,319, Bolich et al., Filed August 27, 1991, US Pat. USA be no. 07 / 758,320, Torgerson et al., Filed August 27,

1991.

C. Anti-dandruff agents (I). Plrltlona or polyvalent pllltlona metal salt

The present invention may include plrythione or a polyvalent metal salt of plutlon. Any form of multipurpose metal plutlon salt may be used, including platelet and needle structures. Salts for use herein include those formed from the polyvalent metals magnesium, barium, bismuth, strontium, copper, zinc, cadmium, zirconium, and mixtures thereof, and in one embodiment the salt is formed with zinc. In one embodiment the salt is 1-hydroxy-2-pyridinationa zinc salt (known as "zinc plritiona" or "ZPT"); ZPT in particle form in platelet, where the particles have an average size of up to approximately 20 pm, in an embodiment up to approximately

MEXICAN INSTITUTE OF THE ('KO.'líüAD

INDUSTRIAL

<img file="MX337657B_D0045.tif" />

pm, in another modality until approximately 2.5 pm.

The anti-dandruff and antimicrobial agents of pyridinothione are described, for example, in US Pat. nos. 2,809,971; 3,236,733; 3,753,196; 3,761,418; 4,345,080; 4,323,683; 4,379,753; and 4,470,982.

Zinc pyrithione can be prepared by reacting 1-hydroxy-2-pyridination (i.e., pyrithione acid) or a soluble salt thereof with a zinc salt (eg, zinc sulfate) to form a precipitate of zinc pyrithione, as illustrated in US Pat. USA no. 2,809,971.

The pyrithione or polyvalent metal salt of pyrithione can be from about 0.01% to about 5%; and in a mode of approximately 0.1% to approximately 2%.

In embodiments with a particulate zinc material and a pyrithione or polyvalent metal salt of pyrithione, the ratio of the particulate zinc material to pyrithione or a polyvalent metal salt of pyrithione may be from 5: 100 to 10: 1; and in another embodiment from about 2:10 to 5: 1; and still in another mode from 1: 2 to 3: 1.

(ii), Furametpir

In one embodiment, the present invention may comprise furametpir. Furametpir is a fungicide, and more specifically, furametpir falls within the carboxamide class of antifungals. Without being bound by theory, it is generally thought that the mechanism of furametpir is the inhibition of mitochondrial oxidation of succinate.

The embodiments of the present invention can include from about 0.01% to about 3% of a furametpir; in another embodiment, from about 0.1% to about 2%; still in another modality

IMPI

<img file="MX337657B_D0046.tif" />

from about 0.2% to about 1.5%.

In the present invention the combination of furametplr with pyrltlon or with the polyvalent metal salts of plltiona may result in an increase in the efficacy of a composition. In an embodiment of the present invention this increase may be an Increase in anti-dandruff efficacy.

In a further embodiment of the present invention, furametplr may also be used in combination with other antlmlcroblane agents. Non-limiting examples of other antlmlcrobial agents are ketoconazole, cmbambale, octopirox, salicylic acid, vegetable tar, setenium sulfide, and mixtures of these. Combinations of furametpir with other anti-microbial agents can result in an increase in the efficacy of a composition and, more particularly, can increase the anti-dandruff efficacy.

Furametplr can generally be represented by the following

Formula I:

I

<img file="MX337657B_D0047.tif" />

<img file="MX337657B_D0048.tif" />

Formula i

Formula: C₁₇H₂oCI N₃OR₂

CAS / Number of

123572-88-3

<img file="MX337657B_D0049.tif" />

IMPI

INSTITUTO MEXICANO DS LA PROPISD / iD INDUSTRIAL registration:

Name of the CA index: 1H-prazol-4-carboxamide, 5-chloro-N- (1,3-dihydro1,1,3-trimethyl-4-sobenzofuranyl) -1,3-dimethyl ( 9CI)

Limber® trade names (¡ii). Zinc particulate material

In a further embodiment of the present invention the composition of the present invention can include an effective amount of a particulate zinc material.

The embodiments of the present invention may include from about 0.001% to about 10% of a particulate zinc layered material; in another embodiment from about 0.01% to about 7%; still in another modality from about 0.1% to about 5%.

Zinc Particulate Materials (PZMs) are zinc-containing materials that remain largely insoluble within formulated compositions. Many of the benefits of PZM require that zinc ion be chemically available without solubilizing, which is called zinc instability. The physical properties of the particulate material have the potential to impact lability. Several factors have been discovered that impact zinc lability, which has led to the development of more effective PZM-based formulas.

The physical properties of the particles that are important in optimizing the zinc instability of PZMs have been found to be: morphology, surface area, crystallinity, bulk density, surface charge, index

<img file="MX337657B_D0050.tif" />

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL refraction, and the level of purity, and mixtures of these. Controlling these physical properties has been shown to increase product performance.

Examples of particulate zinc materials useful in certain embodiments of the present invention include the following:

Inorganic materials: zinc aluminate, zinc carbonate, zinc oxide, and materials containing zinc oxide (i.e., calamine), zinc phosphates (i.e., orthophosphate and pyrophosphate), zinc selenide, zinc sulfide, silicates zinc (i.e., zinc ortho and meta-silicates), zinc silicofluoride, zinc borate, zinc hydroxide and hydroxysulfate, zinc-containing laminates and combinations of these.

Furthermore, layered structures are those that have primarily two-dimensional crystal growth. Conventionally, layered structures are described as those in which all atoms are embedded in well-defined layers, but also as those in which there are ions or molecules between the layers, called ion channels (AF Wells "Structural Inorganic Chemistry" Clarendon Press , 1975). Zinc may be incorporated into the zinc containing layer materials (ZLM) in the layers and / or may be a more unstable component of the ion channels.

Many layered materials containing zinc are natural minerals. Common examples include hldrozlncita (zinc hydroxycarbonate), basic zinc carbonate, auricalcite (zinc and copper hydroxycarbonate), rosaslta (copper and zinc hydroxycarbonate), and many related minerals that contain zinc. Natural ZLMs can also occur when layered anionic species, such as clay-type minerals (e.g. eg, phyllosilicates) contain ion exchange zinc ion channels. All of these natural materials can also be synthetically obtained or formed onsite at

IJMt PI

INSTITUTO .MEXICANO S &amp; 'SsWSiííí DS THE PROPERTY V% Bs «wSLJBrf industrial a composition or during a production process.

Another common class of ZLMs, frequently but not always synthetic, are the doubly stratified hydroxide represented, generally, by the formula [M²⁺1._XM³⁺X (OH)₂]^{X +} TO^m‘_{x / m}-nH₂O and some or all of the dvalent ions (M²⁺) are represented as Zinc ions (Crepaldl, EL, Pava, PC, Tronío, J, Valim, JB J. Colloid Interíac. Sci.

2002, 248, 429-42).

Another class of ZLMs may also be prepared called double hydroxyl salts (Morloka, H., Tagaya, H., Karasu, M, Kadokawa, J, Chiba, K., Inorg. Chem. 1999,

38, 4211-6). The double hydroxyl salts can be represented by the general formula [M²⁺1._xM²⁺1 + x (OH)₃₍₁._and)]⁺ A '(1 = 3y) / n-nH2O, where the two metal ions may be different; IF they are equal and are represented by zinc, the formula is simplified to [Zn ι + χ (ΟΗ) 2]^{2χ +} 2x A-nH2O. This last formula represents (where x = 0.4) common materials such as zinc hydrochloride and zinc hydroxylter. These materials also refer to hydrozinclta, where a dvalent anion is replaced with a monovalent anion. These materials can also be formed In sltu in a composition, or as part of or during a production process.

These ZLM classes represent relatively common examples from the general category and are not intended to limit the broader scope of materials that meet this definition, which include: natural materials containing zinc / ores and minerals: sphalerlta (zinc blende), wurtzlta, smlthsonlta, franklinita, zlnclta, wlllemlta, troostlta, hemimorflta and combinations of these. Organic salts: salts of fatty acids and zinc (i.e. caproate, laurate, oleate, stearate, etc.), zinc salts of alkyl sulfonic acids, zinc naphthenate, zinc tartrate, zinc tannate, zinc fltate, monoglycerolate zinc, zinc alantolnate, zinc urate, zinc salts, and amino acids (i.e., methlonate, fenllallnate, trlptofanato, clstelnate, etc.) and combinations thereof.

<img file="MX337657B_D0051.tif" />

Polymeric salts: zinc polycarboxylates (i.e., cocklaclate), zinc polysulfate, and combinations thereof. Physically Adsorbed Forms: Zinc Charged Ion Exchange Resins, Zinc Adsorbed on Particle Surfaces, Composite Particles Incorporating Zinc Salts (i.e. Morphologically as Core / Cublette or Aggregate), and Combinations thereof. Zinc salts: zinc oxalate, zinc tannate, zinc tartrate, zinc citrate, zinc oxide, zinc carbonate, zinc hydroxide, zinc oleate, zinc phosphate, zinc silicate, zinc stearate, sulfur zinc, zinc undeclate and the like, and mixtures thereof; In one embodiment the zinc salt is a basic zinc oxide or zinc carbonate.

Commercially distributed zinc oxide sources include Z-Cote and Z-Cote HPI (BASF) and USP I and USP II (Zinc Corporation of America).

Commercial sources of zinc carbonate available include basic zinc carbonate (Cater Chemicals: Bensenvllle, IL, USA), zinc carbonate (Shepherd Chemicals: Norwood, OH, USA), zinc carbonate (CPS Union Corp .: New York, NY, USA), zinc carbonate (Elementls Plgments: Durham, UK) and zinc carbonate AC (Bruggemann Chemical: Newtown Square, PA, USA). The basic zinc carbonate which may also be commercially mentioned as "zinc carbonate", "basic zinc carbonate" or "zinc hydroxycarbonate" is a consistent synthetic version of naturally occurring hldrozinclta-like materials. Ideal stoichiometry is represented by Zn₅(OH)₆(CO₃)₂, but the actual stoichiometric ratios may vary slightly and other Impurities may Incorporate into the crystal lattice.

Surfactants

The surfactant component of the soluble porous solid is essential as a processing aid in preparing a stable solid porous structure for solids

<img file="MX337657B_D0052.tif" />

IMPI

INSTITUTO MEXICANO DS THE INDUSTRIAL PROPERTY soluble porous described in the present description, although it is understood that the surfactant component should not generate a significant foam during the use by the consumer for the non-foaming porous solids of the present invention. Consequently, the surfactant component is primarily used as a processing aid in the manufacture of a stable foam, where the surfactant includes conventional surfactants or emulsifiers that need not provide any foaming performance. Examples of emulsifiers for use as a surfactant component herein include mono and diglycerides, fatty alcohols, polyglycerol esters, propylene glycol esters, sorbitan esters, and other known emulsifiers, or in any other way commonly used to stabilize air interfaces, such as those used during the preparation of aerated groceries such as cakes and other baked goods and confectionery, or stabilization of cosmetics such as styling foams for hair.

(i) Ionic Surfactants

The soluble personal care solids of the present invention may comprise a maximum level of 10% (or less than 10%) of ionic surfactants to be used primarily as a processing aid in the manufacture of a stable foam solid, so that significant foaming during use and consumer dissolution of the porous solid are ruled out. Suitable ionic surfactants for use in the soluble porous solids of the present invention include anionic surfactants, cationic surfactants, zwitterionic surfactants, amphoteric surfactants, or combinations thereof.

Anionic surfactants suitable for use in the personal care compositions of the present invention include those described in

<img file="MX337657B_D0053.tif" />

IMPI

MEXICAN INSTITUTE

OF THE PROPERTY

INDUSTRIAL

McCutcheon's Detergents and Emulsifiers, 1986 North American Edition Allured Publishing Corp .; McCutcheon's, Functional Materials, North American Edition (1992), Allured Publishing Corp .; and the US patent. USA no. 3,929,678 (Laughlin et al.).

Non-limiting examples of suitable anionic surfactants for use herein include alkyl and alkyl ether sulfates, sulfonated monoglycerides, sulfonated olefins, alkyl aryl sulfonates, primary or secondary alkane sulfonates, acyl suphosuccinates, acyl isethionates. , alkyl glyceryl ether sulfonate, sulfonated methyl esters, sulfonated fatty acids, alkyl phosphates, acyl glutamates, acyl sarcosinates, alkyl sulfoacetates, acylated peptides, alkyl ether carboxylates, acyl lactylates, anionic fluorosurfactants, sodium lauroyl glutamate, and combinations thereof.

Appropriate anionic surfactants for use in the personal care compositions of the present invention include alkyl and alkyl ether sulfates. These materials have the respective formulas ROSO₃M and RO (C2H₄OR)_XSW₃M, where R is alkyl or alkenyl of from about 8 to about 24 carbon atoms, x has a value of from 1 to 10, and M is a water soluble cation such as ammonium, sodium, potassium and triethanolamine. Alkyl ether sulfates are usually made as condensation products of ethylene oxide and monohydric alcohols having from about 8 to about 24 carbon atoms. In one embodiment, R has from about 10 to about 18 carbon atoms in both alkyl sulfates and alkyl ether sulfates. Those of alcohols can be derived from fats, for example, coconut oil or tallow, or they can be synthetic. Lauryl alcohol and straight chain alcohols derived from coconut oil can be useful in the present invention. These are IMPIfSi

MEXICAN INSTITUTE

PROPERTY V&gt; »¡

INDUSTRIAL alcohols are reacted with from about 1 to about 10, and in a 3 to about 5 molar ratio of ethylene oxide and the resulting mixture of molecular species with, for example, an average of 3 moles of ethylene oxide per mole of alcohol, sulphates and neutralizes.

Specific examples of alkyl ether sulfates that can be used in personal care compositions are coconut triethylene glycol alkyl ether sulfate sodium and ammonium salts; tallow alkyl ether sulfate triethylene glycol, and tallowalkylhexaoxyethylene sulfate. The alkyl ether sulfates useful in the present invention are those that comprise a mixture of individual compounds; the mixture has an average alkyl chain length of about 10 to about 16 carbon atoms and an average degree of ethoxylation of about 1 to about 4 moles of ethylene oxide.

Other suitable anionic surfactants include water soluble salts of the organic products of reaction with sulfuric acid of the general formula [R¹fifteen SO3-M], where R¹ is selected from the group consisting of a branched or straight chain saturated aliphatic hydrocarbon radical having from about 8 to about 24, and in an embodiment from about 10 to about 18, carbon atoms; and M is a cation. Important examples are salts of an organic product of the reaction with sulfuric acid of a hydrocarbon of the methane series, including iso-, neo-, ineso- and n-paraffins, with about 8 to about 24 carbon atoms, and in a modality about 10 to about 18 carbon atoms and a sulfonating agent, eg SO₃, H₂SW₄, oleum, obtained according to known sulfonation methods including bleaching and hydrolysis. Anionic surfactants useful in the present invention include C-sulfonated n-paraffins₁₀alkali metal and ammonium.

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL

Additional examples of suitable anionic surfactants are fatty acid reaction products esterified with isetionic acid, and neutralized with sodium hydroxide where, for example, the fatty acids are derived from coconut oil; sodium or potassium salts of fatty acids amides of methyl tauride, in which the fatty acids, for example, are derived from coconut oil. Other suitable anionic surfactants of this variety are described in US Pat. USA no. 2,486,921, US Patent No. USA no. 2,486,922 and US Patent No. USA no. 2,396,278.

Even other suitable anionic surfactants are succinamates, for example disodium N-octadecylsulfosuccinamate; diamoniolauryl sulfosuccinamate; N- (1,2dicarboxiethyl) -N-octadecylsulfosuccinamate tetrasodium; diamyl ester of sodium sulfosuccinic acid; sodium sulfosuccinic acid dihexyl ester; and sodium sulfosuccinic acid dioctylester.

Other suitable anionic surfactants include olefin sulfonates having from about 12 to about 24 carbon atoms. The term "define sulfonates" is used herein to refer to compounds that can be produced by sulfonation of α-olefins by means of uncomplexed sulfur trioxide, followed by neutralization of the acidic reaction mixture under conditions such that any sulfone that has formed in the reaction is hydrolyzed to obtain the corresponding hydroxyalkanesulfonates. Sulfur trioxide can be liquid or gaseous and is usually, but not necessarily, diluted with inert diluents, for example SO₂liquid, chlorinated hydrocarbons, etc., when used in liquid form or with air, nitrogen, SO₂ gaseous, etc., when used in gaseous form.

The α-olefins from which the olefin sulfonates are derived are monoolefins with from about 12 to about 24 carbon atoms, and in one embodiment from about 14 to about 16 carbon atoms. In a

<img file="MX337657B_D0054.tif" />

modality, they are straight chain olefins. -

In addition to true alkene sulphonates and a proportion of hydroxyalkanesulfonates, olefin sulfonates may contain minor amounts of other materials, such as alkene disulfonates depending on the reaction conditions, the proportion of reactants, the nature of the olefins that serve as matter prima and its impurities, and secondary reactions during the sulfonation process.

Another class of anionic surfactants suitable for use in personal care compositions are b-alkyloxyalkanesulfonates. These compounds have the following formula:

OFUH II -c — οΙ I Η H

-SW₃ where R is a straight chain alkyl group having from about 6 to about 20 carbon atoms, R₂ it is a lower alkyl group having from about 1 to about 3 carbon atoms, and M is a water soluble cation as described above.

Suitable surfactants are described in McCutcheon's 1989 Annual Emulsifiers and Detergent, published by MC Publishing Co., and US Pat. USA no. 3,929,678.

Anionic surfactants for use in personal care compositions include ammonium lauryl sulfate, ammonium laurethsulfate, triethylamine lauryl sulfate, triethylamine laurethsulfate, triethanolamine laurethsulfate, monoethanolamine lauryl sulfate, laurethsulfate

<img file="MX337657B_D0055.tif" />

<img file="MX337657B_D0056.tif" />

monoethanolamine, diethanolamine lauryl sulfate, diethanolamine laurethsulfate, sodium monoglyceride lauryl sulfate, sodium lauryl sulfate, potassium lauryl sulfate, potassium lauryl sulfate, sodium lauroylsurinosinate, sodium lauroylsurinosinate, sodium lauroylsurinosinate, sodium lauroylsurinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsarinosinate, sodium lauroylsurinosinate ammonium, sodium cocoylsulfate, sodium lauroylsulfate, potassium cocoylsulfate, potassium lauryl sulfate, triethanolamine lauryl sulfate, triethanolamine lauryl sulfate, monoethanolamine cocoylsulfate, monoethanolamine lauryl sulfate, sodium tridecylbenzenesulfonate, sodium dodecylbenzenesulfonate, and combinations thereof.

Amphoteric surfactants suitable for use in the personal care compositions of the present invention include those surfactants that are broadly described as derivatives of secondary and tertiary aliphatic amines, in which the aliphatic radical can be straight-chain or branched-chain and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group for solubilization in water, for example, carboxyl, sulfonate, sulfate, phosphate, or phosphonate. Examples of the compounds that fall within this definition are sodium 3-dodecyl-aminopropiononate, sodium 3-dodecylaminopropanesulfonate, sodium lauroylsarcosinate, N-alkyl alkyl taurines such as those prepared by reacting dodecylamine with sodium isethionate, in accordance with what the US patent teaches. USA no. 2,658,072, N-higher alkyl aspartic acids such as those produced in accordance with the teaching of US Pat. USA no. 2,438,091, and the products described in US Pat. USA no. 2,528,378. Suitable zwitterionic surfactants include those that are broadly described as derivatives of aliphatic quaternary compounds of ammonium, phosphonium, and sulfonium, in which the aliphatic radicals can be of

IMPI

MEXICAN INSTITUTE OF PROPERTY

INDUSTRIAL

<img file="MX337657B_D0057.tif" />

straight or branched chain, and wherein one of the substitiantag nlifatiooo oonticne-et · about 8 to about 18 carbon atoms and one contains an anionic group, for example, carboxy, sulfonate, sulfate, phosphate or phosphonate. Suitable zwitterionic surfactants for use in the multi-phase personal care composition include betaines, including cocoamldopropyl betaine.

The amphoteric surfactants of the present invention can also include alkylamphoacetates including lauroamphoacetate and cocoamphoacetate. Alkylanfoacetates can comprise monoacetates and dlacetates. In some types of alkylamphoacetates, diacetates are impurities or unexpected reaction products.

Suitable zwitterionic surfactants for use in the personal care compositions of the present invention include those that are broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, where the aliphatic radicals can be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and the other contains an anionic group, for example, carboxyl, sulfonate, sulfate, phosphate or phosphonate. These suitable zwitterionic surfactants can be represented by the formula:

j^R3) x

Ft²-AND⁺-CH₂-R⁴—Z where R² it contains an alkyl, alkenyl, or hydroxyalkyl radical of from about 8 to about 18 carbon atoms, from 0 to about 10 ethylene oxide entities and from 0 to about 1 glyceryl entity; Y is selected from the group consisting of nitrogen, phosphorous, and sulfur atoms; R³ is an alkyl or monohydroxyalkyl group that

MEXICAN INSTITUTE

OF PROPERTY

INDUSTRIAL ^w- contains about 1 to about 3 carbon atoms: X is 1 manrin and pq is a sulfur atom and 2 when Y is a nitrogen or phosphorous atom; R⁴ it is an alkylene or hydroxyalkylene of from about 1 to about 4 carbon atoms and Z is a radical selected from the group consisting of carboxylate, sulfonate, sulfate, phosphonate and phosphate groups.

Other suitable zwitterionic surfactants for use herein include betaines, including long chain alkyl betaines, such as coco dimethyl carboxymethyl betaine, cocoamidopropyl betaine, cocobetaine, lauryl amidopropyl betaine, oleyl betaine, lauryl dimethyl carboxymethyl betaine, lauryl dimethyl alphacarboxlethyl betaine , cetyl dimethyl carboxymethyl betaine, lauryl bis- (2-hydroxyethyl) carboxymethyl betaine, stearyl bis- (2-hydroxypropyl) carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine and lauryl bis- (2-hydroxypropyl) alpha-carboxyletyl betaine. Sulfobetaines may be represented by coco dimethyl sulfopropyl betaine, stearyldimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis- (2-hydroxyethyl) sulfopropyl betaine, and the like; amidobetaines and amidosulfobetaines, where the radical RCONH (CH₂)₃ is connected to the betaine nitrogen atom and are also useful here

Invention.

(I) Nonionic surfactants (a)

In one embodiment, nonionic surfactants are surfactants to be employed as a processing aid in the manufacture of the soluble porous solids of the present invention. Suitable nonionic surfactants for use in the present invention include those described in McCutcheion's Detergent and Emulsifiers, North American Edition (1986), Allured Publishing Corp., and McCutcheion's

Functional Materials, North America edition (1992). Nonionic surfactants

<img file="MX337657B_D0058.tif" />

IMPIs suitable for use in care compositions nprsnnai Hn h prnnnnt ». Inventions include, but are not limited to, polyethylene alkylene phenols, alkanoic acid esters, alkanoic acid esters, alkanoic acid esters, alkanoic acid esters of alkanoic acids, sorbitol esters of alkanoic acids, sorbitol esters of alkanoic acids, sorbitol esters of alkanoic acids, sorbitol esters of alkanoic acids, sorbitol esters of alkanoic acids. Polyoxyl-esters of alkanoic acids, alkanoic-polyoxyetlated alkanoic acids, alkanolamides, N-alkIlpIrrolldones, Alkylglycosides, Alkylpolyglucosides, Alkyllamine oxides and polyoxylethylenated silicones.

Representative polyoxyethanol alcohols include alkyl chains that vary in the C9-C16 range and that have from about 1 to about 110 alkoxy groups that include, but are not limited to, laureth-3, laureth-23, ceteth-10, esteareth- 10, esteareth-100, beheneth-10, and commercially available from Shell Chemicals, Houston, Texas under the trade names of Neodol® 91, Neodol® 23, Neodol® 25, Neodol® 45, Neodol® 135, Neodo®l 67, Neodol® PC 100, Neodol® PC 200, Neodol® PC 600, and mixtures of these.

Also commercially available are the commercially available polyoxyethylene fatty ethers available under the trade name Brlj® from Unlqema, Wllmlngton, Delaware, which include, but are not limited to, Brlj® 30, Brlj® 35, Brlj® 52, Brlj® 56, Brlj® 58, Brlj® 72, Brlj® 76, Brlj® 78, Brlj® 93, Brlj® 97, Brlj® 98, Brij® 721 and mixtures of these.

Alkylglycosides and alkylpolyglucosides can be represented by the formula (S) nOR, where S is a sugar entity such as glucose, fructose, trickle, galactose, and the like; n is an integer from about 1 to about 1000, and R is a C8-C30 alkyl group. Examples of straight chain alcohols from which the alkyl group can be derived include decyl alcohol, lauryl alcohol, alcohol

<img file="MX337657B_D0059.tif" />

myristyl, cetyl alcohol, stearyl alcohol, oleyl alcohol, and the like. Examples of these surfactants include alkylpolyglucosides where S is a glucose entity, R is a C8-20 alkyl group, and n is an integer from about 1 to about 9. Commercially available examples of these surfactants include decylpolyglucoside and lauryl polyglucoside available under the trade names APG® 325 CS, APG® 600 CS and APG® 625 CS) from Cognis, Ambler, Pa. Sucrose ester surfactants such as sucrose cocoate, sucrose laurate and alkyl polyglycosides available under the tradenames Triton ™ BG-10 and Triton ™ CG-110 from The Dow Chemical Company, Houston, Tx are also useful herein.

Other suitable nonionic surfactants for use in the present invention are glyceryl esters and polyglyceryl esters which include, but are not limited to, saturated and unsaturated glyceryl monoesters of glyceryl, branched-chain, C1222 fatty acid monoesters. , such as glyceryl oleate, glyceryl monostearate, glyceryl monopalmitate, glyceryl monobehenate, and mixtures thereof, and polyglyceryl esters of C12-22 fatty acids, branched-chain, saturated and unsaturated, such as polyglyceryl-4 isostearate, polyglyceryl-3 oleate, polyglyceryl-2-sesquioleate, triglyceryl diisoestearate, diglyceryl monooleate, tetraglyceryl monooleate, and mixtures thereof.

Sorbitan esters are also useful herein as nonionic surfactants. Useful here are the saturated and unsaturated branched chain, C12-22 fatty acid sorbitan esters. These sorbitan esters usually comprise mixtures of mono-, di-, tri-, etc. esters. Representative examples of suitable sorbitan esters include sorbitan monolaurate (SPAN® 20), sorbitan monopalmitate (SPAN® 40), sorbitan monostearate (SPAN® 60), sorbitan triestearate (SPAN® 65), sorbitan monooleate (SPAN ® 80),

<img file="MX337657B_D0060.tif" />

sorbitan trioleate (SPAN® 85) and sorbitan isostearate.

Also suitable for use herein are sorbitan ester alkoxylates including, but not limited to, polyoxyethylene (20) sorbitan monolaurate (Tween®20), polyoxyethylene (20) sorbitan monopalmitate (Tween ® 40), polyoxyethylene (20) sorbitan monostearate (Tween® 60), polyoxyethylene (20) sorbitan monooleate (20) (Tween® 80), polyoxyethylene (4) sorbitan monolaurate (Tween® 21) , polyoxyethylene sorbitan monostearate (4) (Tween® 61), polyoxyethylene sorbitan monooleate (5) (Tween® 81), and mixtures thereof, all available from Uniqema.

Also suitable for use in the present invention are alkylphenol ethoxylates that include, but are not limited to, nonylphenol ethoxylates (Tergitol ™ NP-4, NP-6, NP-7, NP-8, NP-9, NP-10 , NP-11, NP-12, NP-13, NP-15, NP-30, NP-40, NP-50, NP-55, NP-70 available from The Dow Chemical Company, Houston, Tx.) And ethoxylates Octylphenol (Triton ™ X-15, X-35, X-45, X-114, X-100, X-102, X-165, X-305, X-405, X-705 available from The Dow Chemical Company , Houston, Tx).

Also suitable for use in the present invention are alkanolamides including cocamide monoethanolamine (CMEA) and tertiary alkylamine oxides including lauramine oxide and cocamline oxide.

The nonionic surfactants useful in the present invention have an HLB (hydrophilic-lipophilic balance) of at least 8, in one embodiment greater than 10, and in another embodiment greater than 12. HLB represents the balance between hydrophilic and lipophilic entities in a surfactant molecule, and is commonly used as a classification method. HLB values ​​for commonly used surfactants can be easily found in the literature (eg, HLB Index in McCutcheon's Emulsifiers and Detergents, MC Publishing Co., 2004).

IMr I

MEXICAN INST1TUTO OF INDUSTRIAL PROPERTY

<img file="MX337657B_D0061.tif" />

(¡I¡) Polymeric surfactants -----------— ·

Polymeric surfactants can also be surfactants to be used as a processing aid in the manufacture of soluble porous solids of the present invention, either alone or in conjunction with ionic and / or nonionic surfactants. Suitable polymeric surfactants for use in the personal care compositions of the present invention include, but are not limited to, block copolymers of ethylene oxide and fatty alkyl residues, block copolymers of ethylene oxide and propylene oxide, hydrophobically modified polyacrylates, hydrophobically modified celluloses, silicone polyethers, copolyol esters of sllicone, dicuatemarium polydimethylsiloxanes, and commodified amyl / polyether silicones.

Suitable silicone polyethers, commodified amino / polyether silicones, and silicone copolyol esters can include rake-type copolymers, ABA copolymers, trisiloxane surfactants, and mixtures thereof. Suitable examples include, but are not limited to, polyoxylethylenedonethymones (KF-607, KF-351, KF-352, KF-353, KF-354L, KF-355A, KF-615A, KF-945, KF-618, KF-6011, KF-6015 from Shin-Etsu, Japan) including PEG-10 dimethlcone (KF-6017 from Shin-Etsu, Japan), polyoxyethylene and polypropoxylenated dimethicones (Abil EM 90 and Abil EM97 from Evonik, Germany, SF1528 and Products available under the trade names Silwet and Sllsoft from GE Silicones, New York, and formulation aid DC 5225C from Dow Corning, Michigan), commodified amino / polyether silicones (X-22-3939A, X-22-3908A from Shin-Etsu, Japan), silicone copolyol esters including, but not limited to , PEG-7 Dimethicone Isostearate (Novetras Ultrasil DW18) and PEG-7 Dimethicone Olivate (Ultrasil DW-0).

Copolymers of ethylene oxide and industrial fatty alkyl residues

IMPI ^1Ν5Τ,^ ΐ2ρ1οβ

<img file="MX337657B_D0062.tif" />

Suitable include nonionic polyoxyethylene compounds with fatty (hydrophobic) residues at the distal ends of each polyoxyethylene chain including, but not limited to, PEG-150 distearate, PEG-30 dipolyhydroxystearate (Arlacel P135 from Uniqem), and PEG-12 dipolyhydroxystearate dipolyhydroxystearate (Arlacel P114).

Dicuaternary polydimethylsiloxanes have an average molecular weight in the range of 1000 to 4000, and can contain siloxane chains in the range of 5 to 40 dimethylsiloxy units. This quaternary polydimethylsiloxane is available from Goldschmidt AG, Essen, Germany as "ABIL-Quat" 3272. "ABIL-Quat" 3270 is another dicuaternary polydimethylsiloxane available from Goldschmidt.

Suitable hydrophobically modified polyacrylates are typified by Pemulen® products and have the INCI name of C10-30 Alkyl Acrylate Acrylates / Crosslinked Polymer which include, but are not limited to, Pemulen®

TR1.

Suitable hydrophobically modified celluloses include modified alkyl hydroxyethyl cellulose which includes, but is not limited to, cetyl hydroxyethyl cellulose (Natrosol® Plus CS).

Block copolymers of ethylene oxide and propylene oxide include those represented by the following formula: HO (C2H4) x (C3H6O) and (C2H4) xH, where the values ​​of x can vary from about 10 to 110 and the values y can vary, regardless of x, from about 20 to 60. Suitable examples are better known as poloxamer block copolymer (124, 188, 237, 338, 407) under the tradename Pluronic® (L44NF, F68NF, F87NF, F108NF, F127NF) from BASF, Germany.

Water soluble polymer ("polymeric structuring agent")

<img file="MX337657B_D0063.tif" />

KSTITUTO MEXICANO DELA «QUEDAD

INDUSTRIAL

<img file="MX337657B_D0064.tif" />

The present invention comprises a water soluble polymer that functions as a structuring agent. As used in the present description, the term "water soluble polymer" is broad enough to include both water soluble polymers and water dispersible polymers, and is defined as a polymer with a solubility in water, measured at 25 ° C, of ​​at least about 0.1 gram / liter (g / l). In some embodiments, the polymers have a solubility in water, measured at 25 ° C, from about 0.1 gram / liter (g / l) to about 500 grams / liter (g / l). (This indicates the production of a macroscopically isotropic or transparent, colored or colorless solution). The polymers to make these solids can be of natural or synthetic origin and can be modified through chemical reactions. They may or may not be filmmakers. These polymers must be physiologically acceptable, that is, they must be compatible with the skin, mucous membranes, hair and scalp.

The terms "water soluble polymer" and "polymeric structuring agent" are used interchangeably herein. Furthermore, when the singular term "polymer" is indicated, the term should be understood to be broad enough to include a polymer or a mixture of more than one polymer. For example, if a polymer blend is used, the polymer solubility, as mentioned herein, would refer to the solubility of the polymer blend, rather than the solubility of each polymer individually.

The water soluble polymer (s) of the present invention is / are selected such that their weight average molecular weight is from about 40,000 to about 50,000, in one embodiment from about 50,000 to about 400,000, in another embodiment of approximately 60,000 to approximately 300,000 and in another form of

<img file="MX337657B_D0065.tif" />

<img file="MX337657B_D0066.tif" />

approximately 70,000 to approximately 200,000. The weight average molecular weight is computed by adding the average molecular weights of each polymer raw material multiplied by their respective percentages of weight relative by weight of the total weight of the polymers present within the porous solid.

The / the polymer / s soluble / s water of the present invention may include, but are not limited to, synthetic polymers including polyvinyl, polyvinylpyrrolidones alcohols, polyalkylene oxides, polyacrylates, caprolactams, polymethacrylates, polymethyl methacrylates, polyacrylamides, polimetilacrilamidas, polydimethylacrylamides , polyethylene glycol monomethacrylates, polyurethanes, polycarboxylic acids, polyvinylacetates, polyesters, polyamides, polyamines, polyethyleneimines, (acrylate or methacrylate) / maleic copolymers, methylvinyl ether and maleic anhydride copolymers, vinyl acetate and crotonic acid copolymers, vinylpyrrolidone and vinyl acetate copolymers, vinylpyrrolidone / caprolactam copolymers, vinylpyrrolidone copolymers, of anionic, cationic and amphoteric monomers, and combinations thereof.

The suitable water soluble polymer (s) of the present invention may be selected from polymers of natural origin, including those of plant origin, for example karaya gum, tragacanth gum, gum arabica, acemannan, konjac mannan, acacia gum, Anogeissus latifolia gum, whey protein isolate, and soy protein isolate; seed extracts, including guar gum, locust bean gum, quince seed, and plantain afra seed; algae extracts, such as carrageenan, alginates, and agar; fruit extracts (pectins); those of microbial origin including xanthan gum, gellan gum, pullulan, hyaluronic acid, chondroitin sulfate, and dextran; and those of animal origin that include casein, gelatin, keratin, keratin hydrolyzates, sulfonic keratins, albumin, collagen, glutelin,

<img file="MX337657B_D0067.tif" />

IMPI

MEXICAN INSTITUTE

SAY THE PROPERTY

INDUSTRIAL glucagones, gluten, ceina and shellac.

The modified natural polymers are also useful as the water soluble polymer / s in the present invention. Suitable natural polymers include, but are not limited to, cellulose derivatives such as hydroxypropylmethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, methylcellulose, hydroxypropylcellulose, ethylcellulose, carboxymethylcellulose, cellulose acetate phthalate, nitrocellulose, and other cellulose esters / esters; and guar derivatives, such as hydroxypropyl guar.

The water soluble polymers of the present invention include polyvinyl alcohols, polyvinylpyrrolidones, polyalkylene oxides, starch and derivatives of starch, pullulan, gelatin, hydroxypropylmethylcellulose, methicululoses, and carboxymethicelluloses.

The water soluble polymers of the present invention can also include polyvinyl alcohols and hydroxypropyl methylcelluloses. Suitable polyvinyl alcohols include those available from Celanese Corporation (Dallas, TX) under the Celvol trade name which includes, but is not limited to, Celvol 523, Celvol 530, Celvol 540, Celvol 518, Celvol, 513, Celvol 508, Celvol 504, and combinations thereof. Suitable hydroxypropylmethylcelluloses include those available from the Dow Chemical Company (Midland, MI) under the trade name of Methocel which includes, but is not limited to, Methocel E50, Methocel E15, Methocel E6, Methocel E5, Methocel E3, Methocel F50, Methocel K100 , Methocel K3, Methocel A400, and combinations thereof including combinations with the hydroxypropylmethylcelluloses mentioned above.

In a particular embodiment, the above-mentioned water soluble polymer (s) of the present invention (s) may be mixed with any starch or combination of starches as a filler material in an amount such that it reduces the general level of water soluble polymers required, as long as it helps

<img file="MX337657B_D0068.tif" />

ΙΜΡΪ

Does the Mexican porous solid provide the soluble porous solid with the structure and physical characteristics?

required as described in the present description. In those cases the combined weight percent of the water soluble polymer (s) and the starch-based material is generally in the range of about 10% to about 40% by weight in a embodiment from about 12 to about 30%, and in a particular embodiment from about 15% to about 25% by weight with respect to the total weight of the porous solid. The weight ratio of polymer / s soluble / s in water to the starch-based material can generally be in the range of about 1:10 to about 10: 1, in an embodiment of about 1: 8 to about 8: 1, in another embodiment from about 1: 7 to about 7: 1, and in another embodiment from about 6: 1 to about 1: 6.

Typical starch-based material sources of the present invention may include cereals, tubers, roots, legumes, and fruits. Native sources may include corn, pea, potato, banana, barley, wheat, rice, sago, amaranth, tapioca, arrowroot, canna, sorghum, and high-amylase and waxy varieties of these.

The starch-based materials of the present invention could, furthermore, include native starches that are modified through the use of any modifications known in the industry, including physically modified starches, for example, cut starches and thermally inhibited starches; chemically modified starches, including those that have been crosslinked, acetylated and organically esterified, hydroxyethylated and hydroxypropyl, phosphorylated and esterified inorganically, cationic, anionic, nonionic, amphoteric and zwitterionic, and derivatives of succinate and substituted succinate thereof; conversion products derived from any of the starches, including starches

<img file="MX337657B_D0069.tif" />

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INSTITUTO MEXIC A 'DE LA PR0í't £ D / vD

INDUSTRIAL '* 0ώ. Fine boiling or flowable W prepared by oxidation, enzymatic conversion, acid hydrolysis, heat or acid dextrinization, heat and / or cut products may also be useful in the present invention; and the pregelatized starches known in the Industry.

Plastlflcante

The porous soluble solids of the present invention comprise a water soluble plasticizing agent suitable for use in personal care compositions. Non-limiting examples of suitable plasticizing agents include polymethyl polyols, copolyols, polycarboxylic acids, polyesters, and copolyols of dlmetlcone. Examples of useful polyols include, but are not limited to, glycerin, diglycerol, propylene glycol, etllengylcol, butllengylcol, pentylene glycol, dlmethanol, cyclohexane, hexanedol, polyethylene glycol (200-600), sugar alcohols such as sorbitol, mannitol, alcohol, mono- and polyhydric of low molecular weight (p. eg, C2-C8 alcohols); mono di- and ollgo-saccharides such as fructose, glucose, sucrose, maltose, lactose and ascorbic acid and high fructose corn syrup solids. Examples of polycarboxylic acids include, but are not limited to, citric acid, maleic acid, succinic acid, polyacrylic acid, and polymalkellic acid. Examples of suitable polyesters include, but are not limited to, glycerol trlacetate, acetyl monoglyceride, diethyl phthalate, trletyl citrate, trlbutyl citrate, acetyl trutyl citrate, acetll tributllo citrate. Examples of suitable dlmetlcona copolyols Include, but are not limited to, PEG-12 dlmetlcona, PEG / PPG-18/18 dlmetlcona and PPG-12 dlmetlcona. Other plasticizers of the present invention include, but are not limited to, alkyl and ring phthalates; naphthalates; lactates (eg, sodium, ammonium, and potassium salts); sorbeth-30; urea; lactic acid; sodium pyrrolldonecarboxylic acid (PCA); hlaluronyl acid or sodium hlaluronate; soluble collagen; modified protein; Monosodium L-glutamate; alpha &amp; beta hydroxy acids, such as glycolic acid, lactic acid, citric acid, maleic acid, and salicylic acid;

Kl F ί «STITUTO Μ EX; C / .NC! V J-í

OS THE PROPERTY ^-

INDUSTRIAL glyceryl polymethacrylate; polymeric plasticizers such as pollcuatemlos; proteins and amino acids, such as glutamic acid, aspartic acid and Usina; hydrogenated starch hydroslates; other low molecular weight esters (eg, C2-C10 alcohol and acid esters); and any other water soluble plasticizer known to those with experience in the Food and Plastic Industries; and mixtures of these. In one embodiment, the plasticizers include glycerin or propylene glycol and combinations thereof. European patent no. EP283165B1 describes other suitable plasticizers, which include glycerol derivatives such as propoxylated glycerol.

Optional ingredients

The porous soluble solids of the present article invention may also comprise other optional Ingredients that are known for their use or are useful in personal care compositions, provided that such optional materials are compatible with the selected essential materials described herein or that do not unduly affect the performance of the product.

Such optional Ingredients are more typically those materials approved for use in cosmetics and described in reference books such as CTFA Cosmetic Ingredient Handbook, second edition, The Cosmetic, Tolletries, and Fragrance Assoclation, Inc. 1988, 1992. Non-limiting examples of such optional ingredients include preservatives, thickeners, sensing agents, plant extracts, absorbent particles, adhesive particles, hair fixatives, fibers, reagents, acids, bases, enzymes, suspending agents, pH modifiers, particles of pigments, antlmicrobial agents, lotion agents, cosolvents or other additional solvents, and other similar materials.

Other optional ingredients include organic solvents,

<img file="MX337657B_D0070.tif" />

<img file="MX337657B_D0071.tif" />

especially, water-miscible solvents and cosolvents useful as solubilizing agents for polymeric structuring agents and as drying accelerators. Non-limiting examples of suitable solvents include alcohols, esters, ketones, aromatic hydrocarbons, aliphatic hydrocarbons, ethers, and combinations thereof. In one embodiment the alcohols are monohydric. In another embodiment, the monohydric alcohols are ethanol, iso propanol, and n-propanol. In one embodiment the esters are ethyl acetate and butyl acetate. Other non-limiting examples of suitable organic solvents are benzyl alcohol, amyl acetate, propyl acetate, acetone, heptane, isobutyl acetate, isopropyl acetate, toluene, methyl acetate, isobutanol, n-amyl alcohol, n-butyl alcohol , hexane and metllethylketone, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, metllethylketone, acetone, and combinations thereof.

Other optional ingredients include emulsion or latex polymers, thickeners such as water soluble polymers, clays, silicas, waxes, ethylene glycol distearate, depot aids, which include coacervate-forming components and quaternary amine compounds.

Product form

The soluble porous solids of the present invention can be produced in any of a variety of product forms, including soluble porous solids used alone or in conjunction with other personal care components. Soluble porous solids can be continuous or discontinuous when used in personal care compositions. Regardless of the product form, the key to the modalities of all product forms contemplated within the scope of the method of the present invention is the soluble porous solid.

ΤΗ », 'Τ

<img file="MX337657B_D0072.tif" />

selected and defined, comprising a combination of a solid polymeric structuring agent and a surfactant-containing active ingredient, all as defined herein.

The soluble porous solids of the present invention are in the form of one or more sheets or flat pads of a size suitable for easy handling by a user. It can have a square, rectangular or circular shape, or any other shape. The pads can also be in the form of a continuous strip that is delivered in a roll dispenser similar to adhesive tape dispensers, which dispenses individual portions through perforations and / or a cutter mechanism. Optionally, the soluble porous solids of the present invention are in the form of one or more cylindrical objects, spherical objects, tubular objects, or an object of any other shape. The soluble porous solids of the present invention can have a thickness (gauge) of from about 0.5mm to about 10mm, in one embodiment from about 1mm to about 7mm, and in yet another embodiment from about 2mm to about 6mm. For cylindrical, spherical, or other objects that have more than a third dimension compared to a pad or strip, the thickness is taken as the maximum distance from the shortest dimension, that is, the diameter of a sphere or cylinder , for example.

The soluble porous solids of the present invention may comprise one or more topographically shaped, indented or otherwise textured surfaces, including letters, logos or figures. The textured substrate can be the result of the shape of the substrate, in the sense that the outermost surface of the substrate contains higher portions than other surface areas. The raised parts may result from the way the article was made, for example, the article may originally be formed with a grid pattern or with grooves. The

<img file="MX337657B_D0073.tif" />

ΙΜ raised portions may also be the result of proeos — naming, printed coatings, etched drawings, lamination to other layers having raised portions, or may be the result of the physical form of the same soluble porous solid substrate. Texturing can also be the result of lamination of the substrate to a second textured substrate.

In a particular embodiment, the soluble porous solids of the present invention can be drilled with holes or channels that penetrate into or through the porous solid. These perforations can be formed during the drying process by spikes extending from the mold surface, the web, or other non-stick surface. Alternatively, these perforations can be formed after the drying process by tapping or nailing the porous solids with pins, needles, or other sharp objects. In one embodiment these perforations are found in large numbers per surface area, but the amount is not so great as to sacrifice the integrity or physical appearance of the porous solid. These perforations have been found to increase the dissolution rate of porous solids in water, compared to unperforated porous solids.

The soluble porous solids of the present invention can also be supplied by a water insoluble implement or device. For example, they may be attached or glued, by some mechanism, to an applicator to facilitate application to hair and / or skin, i.e., a comb, rag, wand, or any other imaginable water-insoluble applicator. Furthermore, soluble porous solids can be adsorbed onto the surfaces of a separate large surface area water-insoluble implement, i.e. a porous sponge, a speck, a flat sheet, etc. For the latter, the soluble porous solid of the present invention can be adsorbed as a layer or thin film or it can be included within a space in a specific region

IMPÍ

<img file="MX337657B_D0074.tif" />

provided by the implement.

Types of products |

Non-limiting examples of modalities of product types to be used by the methods and soluble porous solids of the present invention include substrates for hair conditioning, wetting substrates, other substrates for hair treatment, other substrates for hair treatment. skin or body, shaving preparations substrates, pet care substrates, personal care substrates containing pharmaceutical active ingredients or other skin care active ingredients, moisturizing substrates, sunscreen substrates, substrates of chronic beneficial agents for the skin (for example, substrates containing vitamins, substrates containing alpha-acid hydroxy, etc.), deodorizing substrates, fragrance-containing substrates, and the like.

| L_Manufacturing method

The soluble porous personal care solids of the present invention can be prepared by the process comprising: (1) preparing a processing mixture comprising surfactant (s), dissolved polymeric structuring agent, plasticizer and other optional ingredients; (2) aerate the mixture by introducing a gas into the mixture; (3) shaping the aerated wet mix to obtain one or more desired shapes; and (4) drying the aerated wet mix to the desired final moisture content (eg, about 0.5% to about 15% moisture, by addition of energy).

Preparation of the processing mixture

INSTITUTO MFXív.'u ': O DE LA

The processing mixture is generally prepared by dissolving the polymeric structuring agent in the presence of water, plasticizer, and optional ingredients, by heating followed by optional cooling. This can be accomplished by any suitable heated batch stirring system or by any suitable continuous system involving single or double screw extrusion or heat exchangers together with static or high-blast mixing. Any process can be imagined as long as the polymer ultimately dissolves in the presence of water, the surfactant (s), the plasticizer and other optional ingredients; processes include gradual processing through premix portions of any combination of ingredients.

The processing mixtures of the present invention comprise: from about 15% to about 50% solids, in one embodiment, from about 20% to about 40% solids and, in another embodiment, from about 25% to about 35% of solids, by weight of the processing mixture before drying; and have a viscosity of from about 2,500 cps to about 35,000 cps, in one embodiment, from about 5,000 cps to about 30,000 cps, in another embodiment, from about 7,500 cps to about 25,000 cps, and, in another embodiment, from about 10,000 cps to about 20,000 cps. The viscosity values ​​of the processing mixture can be measured on a suitable rheometer, such as a TA Instruments AR500 rheometer with a 4.0 cm diameter parallel plate and 1200 microns distance at a shear rate of 1.0 reciprocal seconds over a period of 30 seconds at 25 ° C (available from TA Instruments, New Castle, DE), or on a standard viscometer, such as a Brookfleld Model DV-1 PRIME digital viscometer with CP-41 and CP-42 spindles at a blast speed of 1.0 reciprocal seconds over a period of 2 minutes at

<img file="MX337657B_D0075.tif" />

IΜ Ρ ϊ

INSTITUTO MEX¡ «'aÑ” ¿

OF THE PROPERTY

INDUSTRIAL '• rJ ° C (available from Brookfleld Engineerlng Laboratories, Inc., Mlddleboro, MA). The percentage of solids content is the sum of the percentages of weight by weight of the total processing mixture of all solid, semi-solid and liquid components, not including water and any obviously volatile material, such as low-boiling alcohols.

Aeration of the processing mixture

Aeration of the processing mixture is accomplished by introducing a gas into the mixture, in one mode using mechanical mixing energy, but can also be accomplished by other physical or chemical means. Aeration can be accomplished by any suitable mechanical processing means including, but not limited to, batch tank aeration through mechanical mixing, including planetary mixers or any other mixing vessel, (i) semi-continuous or continuous aerators used in the food industry (pressurized and non-pressurized), (ii) gas injection, (iv) gas formation through a pressure drop, or (v) spray drying the processing mixture to form globules or aerated particles that can be compressed, as in a mold with heat, to form the porous solid.

In a particular embodiment it has been discovered that the soluble porous solids of the present invention can be prepared within continuous, semi-continuous pressurized aerators that are conventionally used within the food industry in the production of marshmallows. Suitable pressurized aerators include the Morton mixer (Morton Machine Co., Motherwell, Scotland), the Oakes continuous automatic mixer (ET Oakes Corporation, Hauppauge, New York), Fedco Continuous Mixer (The Peerless Group, Sidney, Ohio) and the Preswhip

<img file="MX337657B_D0076.tif" />

<img file="MX337657B_D0077.tif" />

(Hosokawa Micron Group, Osaka, Japan).

Formation of the aerated wet processing mixture

Formation of the aerated wet processing mixture can be accomplished by any suitable means to give the mixture the desired shape or forms including, but not limited to, (i) depositing the aerated mixture in specially designed molds comprising a non-surface interacting and non-stick including Teflon, metal, HDPE, polycarbonate, neoprene, rubber, LDPE, glass and the like; (ii) depositing the aerated mixture into cavities printed in dry granular starch contained in a flat tray (starch mold forming technique widely used in the confectionery industry); or (iii) depositing the aerated mixture on a continuous screen or tape comprising any non-interacting or non-stick material, Teflon, metal, HDPE, polycarbonate, neoprene, rubber, LDPE, glass, and the like, which can then be embossed, cut, recorded or stored on a roll.

Drying the formed aerated wet processing mixture

Drying of the formed aerated wet processing mixture can be accomplished by any suitable means including, but not limited to, (i) drying room (s) 20, including rooms with controlled temperature and pressure or atmospheric conditions; (ii) ovens, including convection and non-convection ovens with controlled temperature and, optionally, humidity; (iii) tray / ridge dryers, (iv) multi-stage in-line dryers; (v) impact furnaces; (vi) rotary kilns / dryers; (vii) online roasters; (viii) ovens and dryers with rapid high heat transfer; (ix) double enclosure toasters; (x) conveyor dryers; (xi)

<img file="MX337657B_D0078.tif" />

microwave drying technology, and combinations of these. Any suitable drying medium that does not comprise lyophilization can be used.

Optional ingredients can be added during any of the four processing steps described above or even after the drying process.

The soluble porous solids of the present invention can also be prepared with foam-forming chemicals by gas formation in situ (by chemical reaction of one or more ingredients, including CO formation₂through an effervescent system).

III Physical and performance characteristics

Dissolution rate

The soluble porous solid of the present invention has a Dissolution Rate that allows the porous solid to disintegrate rapidly during use with application with water. The dissolution rate of the soluble porous solid component is determined according to the methodology described below.

Dissolution method by hand Approximately 0.5 g of the soluble porous solid is placed in the palm of the hand while wearing nitrile gloves. Quickly applied to the product 7.5 cm³ warm tap water (about 30 ° C to about 35 ° C) using a syringe. In a circular motion the palms of the hands are rubbed at 2 rubs at a time until dissolution occurs (up to 30 rubs). The dissolution value on hand is reported as the number of rubs it takes to complete dissolution or 30 rubs maximum (in which case the solid is considered not soluble).

<img file="MX337657B_D0079.tif" />

i ± vi r

DEI ^ PROFIFDAÜ MEXICAN INSTITUTE

The soluble porous solids of the present invention tiewmwi hand dissolve from about 1 to about »30 rubs; -ofr-anamodality from about 2 to about 25 rubs, in another embodiment from about 3 to about 20 rubs, and still in another embodiment of about 4 to about 15 rubs.

Thickness

In one embodiment the soluble porous solid of the present invention is a flat, flexible substrate in the form of a pad, strip or tape and having a thickness of from about 0.5mm to about 10mm, in an embodiment from about 1mm to about 7mm, and in another embodiment from about 2mm to about 6mm, as measured by the methodology below. For cylindrical, spherical, or other objects that have more than a third dimension compared to a pad or strip, the thickness is taken as the maximum distance from the shortest dimension, that is, the diameter of a sphere or cylinder , for example. The thickness ranges are the same as those described above.

The thickness of the soluble porous solid (i.e., substrate or substrate sample) is obtained using a micrometer or thickness gauge, such as the disk-supported digital micrometer model number IDS-1012E from Mituyoto Corporation (Mitutoyo Corporation, 965 Corporate Blvd, Aurora, IL, USA 60504). The micrometer has a 2.54 cm (1 inch) diameter stage and approximately 32 grams in weight, which measures thickness at an application pressure of approximately 6.32 gm / cm²(40.7 phi).

To measure the thickness of the soluble porous solid, the stage is raised,

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OF THE PXO'líDAD V '~ s * je &lt;jS EncuewtFá⁵ debaio 'places a part of the sample substrate on the support that is platinized, carefully lowers the platen so that it enters into contact with the substrate¹sample, the stage is released and the thickness of the sample substrate, in millimeters, is measured on the digital reader. The sample substrate should be carefully extended, fully and to all edges of the stage, to ensure that the thickness is measured at the lowest possible level of surface pressure, except for more rigid, non-flat substrates. For stiffer substrates that are not completely flat, a flat edge of the substrate is measured by bringing only a portion of the platen into contact with the flat portion of the substrate.

Basis weight

The soluble porous solid component of the personal care composition of the present invention has a basis weight of approximately 125 grams / m² at about 3000 grams / m², in a mode of approximately 150 grams / m² at about 1200 grams / m², in another modality of approximately 200 grams / m² at about 1000 grams / m², and still in another modality of approximately 300 grams / m² at about 800 grams / m².

The basis weight of the soluble porous solid component of the personal care composition herein is calculated as the weight of the soluble porous solid component per area of ​​the selected soluble porous solid (grams / m²). The area is calculated as the projection area on a flat surface perpendicular to the outer edges of the porous solid. For a flat object, then, the area is computed based on the area enclosed within the outer perimeter of the sample. For a spherical object, then, the area is computed on the basis of the average diameter

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as 3.14 x (diameter / 2)². For a cylindrical object, then, the area is computed on the basis of the average diameter and the average length as diameter x length. For an irregularly shaped three-dimensional object, the area is computed based on the side with the largest exterior dimensions projected onto a flat surface oriented perpendicular to this side. This can be accomplished by tracing the exterior dimensions of the object on a piece of graph paper with a pencil, and then computing the area by roughly counting the squares and multiplying them by the known area of ​​the squares, or by taking a photograph of the traced area (which may be shaded for contrast) including a scale and using image analysis techniques.

Density

The soluble porous solid of the personal care compositions described herein can be characterized in terms of a density determination.

The density of the soluble porous solid is determined by the equation: Calculated density = Base weight of porous solid / (Thickness of porous solid x 1,000), where the porous solid has a density of approximately 0.03 g / cm³ at about 0.4 g / cm³, in a mode of approximately 0.05 g / cm³ at about 0.3 g / cm³, and in another modality of approximately 0.075 g / cm³ at about 0.2 g / cm³. The basis weight and thickness of the soluble porous solid are determined in accordance with the methodologies described herein.

<img file="MX337657B_D0080.tif" />

<img file="MX337657B_D0081.tif" />

Cellular interconnectivity

The porous soluble personal care personal care products of the present invention with the aforementioned characteristics have a high degree of cell interconnectivity, i.e. they are predominantly open cell solid foams as opposed to being predominantly closed cell solid foams. Cell interconnectivity can be assessed by cutting a 2-3 mm wide slice of the solid in the z direction using scissors or a sharp blade, measured across the largest xy perpendicular surface of the solid, and turning the resulting slice by 90 degrees to reveal the internal cellular structure of the recently cut cross-sectional area. This cross sectional area can be assessed by close visual inspection or, for greater precision, using magnification under a stereo microscope such as the SZX12 Stereo Microscope available from Olympus Olympus America Inc., Center Valley, PA. The soluble open-cell porous solids of the present invention can be easily identified by examining the inner portion of the cross-sectional area that will comprise a predominantly three-dimensional network of columns with open voids surrounding the columns that are interconnected with each other, even in the third dimension through depth of cross section. In contrast, the internal cross section of a closed cell foam will appear as discrete bubbles that cut across it and are then only interconnected at the cross section surface in two dimensions by virtue of the cutting process used to generate the section area. transverse exposed.

Solid flexibility and cohesion

The physical integrity of the soluble porous solids herein

IMPI

<img file="MX337657B_D0082.tif" />

Invention (or cohesion of the solid) is evaluated by a qualitative measurement system using two separate qualitative measurements (scale 1 to 4) regarding brittleness / flexibility (brittle is brittle) and cohesion (ease of removal from molds):

<td colspan="4">Qualitative measurement of brittleness / flexibility</td>

<td>Very brittle = 1</td><td>Something fragile = 2</td><td>Something flexible = 3</td><td>Very flexible = 4</td>

<td colspan="4">Qualitative measurement (Easy to remove from molds)</td>

<td>Very difficult = 1</td><td>Something difficult = 2</td><td>Something easy = 3</td><td>Very easy = 4</td>

These measurements are evaluated in three-dimensional molds and resulting flat solids with thickness in the z dimension between 3 mm and 10 mm that extend in the x dimensions and cover surface areas of between 10 cm² and 60 cm² (with any shape in x and even circles, ovals, squares and rectangles, etc.). The examples in the present invention were evaluated using Teflon circular molds and the resulting removed solids with diameters of 4.15 cm and depths of 0.7 cm. The brittleness / flexibility measurement is judged by folding the pad in half and evaluating the propensity of each pad to break / fold compared to the elasticity and ability of the pads to return to their original shape. Cohesion measurement is judged by stripping a freshly dried solid (after at least 20 hours at 40 degrees Celsius) from the mold and noting the difficulty of removal. Solids with low cohesion measurements are difficult to remove from molds in one piece with significant adhesion to the mold surface and with significant permanence

<img file="MX337657B_D0083.tif" />

θθ MEXICAN INSTITUTE

OF PROPERTY 1

INDUSTRIAL solid adhered to the mold after the solid removal process. Solids with low cohesion measurements are easy to remove from molds in one piece without significant permanence of solid adhering to the mold after the solid removal process.

Foam volume method

The soluble porous solid personal care compositions of the present invention can be considered practically non-foaming with very low foam volumes, which in one embodiment is from about 0 ml to about 20 ml, in another embodiment is from about 0 ml to about 15 my, and still in another modality is from about 0 mi to about 10 mi. For reference, foaming personal care compositions (i.e. shampoos) typically generate foam volumes of from about 70 ml to about 110 ml.

The evaluation of the foam volume is carried out on 15g / 25.4cm (15g / 10 ") of strands of oriental straight virgin hair that have been treated with 0.098g of artificial liquid tallow [10-22% olive oil, 18- 20% coconut oil, 1820% oleic acid, 5-9% lanolin, 5-9% squalene, 3-6% palmitic acid, 36% paraffin oil, 3-6% dodecane , 1-4% stearic acid, 1-4% cholesterol, 1-4% coconut fatty acid, 18-20% choleth-24]. The strand of hair is rinsed with 9-11 grain water, 38 ° C (100 ° F) at 5.7 l / min (1.5 gallons / min) for 20 seconds with a shower nozzle. To test liquid control products, 0.75 cm is applied³ of liquid product to the center of the strand, then, the Lower portion of hair of the strand is scrubbed 10 times, in a circular motion, on the product that is in the hair and, finally, rubs 40 times back and forth (a total of 80

<img file="MX337657B_D0084.tif" />

rubs). Foam velocity is recorded as the number of rubs until the first foam is generated during 80 rubs. Foam from the operator's gloves is transferred to a graduated cylinder with an internal diameter of 3.5 cm and with total capacities of either 70 ml, 110 ml or 140 ml, depending on the total amount of foam generated (modification of cylinder height graduates of standard size through glassware). The hair mousse is brought together by rubbing down on the lock, with a tight grip, and is also placed inside the cylinder. The total volume of foam is recorded in millimeters. Three runs are performed per test sample and the mean of the three values ​​is calculated. When testing the soluble porous solids of the present invention, 0.20 +/- 0.01 grams of product is weighed with the help of scissors if necessary, and applied to the lock and then 2 cm is added³ of additional water to the product through a syringe. After a waiting time of 10 seconds, the foam technique is carried out as described for liquid products. If undissolved material remains in the hair, the material is removed and its weight determined when dry.

IV. Methods of use

The compositions of the present invention can be used to treat mammalian keratinous tissue, such as hair and / or skin, and provide rapid rinsing ability. The method of conditioning the hair may comprise the steps of: a) applying an effective amount of soluble porous solid to the hand, b) wetting the soluble porous solid with water and rubbing to dissolve the solid, c) applying to the hair or the skin the soluble material, such as to treat it and d) rinse the diluted hair or skin treatment with water. These steps can be repeated as many times as necessary to achieve the desired treatment benefits.

<img file="MX337657B_D0085.tif" />

<img file="MX337657B_D0086.tif" />

<img file="MX337657B_D0087.tif" />

In accordance with another embodiment, a method is provided to deliver a benefit to the keratinous tissue of a mammal; The method comprises the step of applying the composition in accordance with the first embodiment to the keratinous tissue to be regulated.

The present invention provides a method of regulating the condition of! keratinous tissue of a mammal; The method comprises the step of applying one or more compositions described herein to the keratinous tissue of a mammal that it is desired to regulate.

The amount of composition applied, the frequency of application, and the period of use will vary depending on the purpose of the application, the level of components in a given composition, and the desired level of regulation. For example, when the composition is applied to the treatment of the entire hair or body, the effective amounts are generally in the range of about 0.3 grams to about 5 grams, in a mode of about 0.4 grams to about 5 grams and still in another embodiment from about 0.5 grams to about 3 grams.

V._ Trade item

The present invention provides a trade item comprising one or more 20 compositions described herein and a communication that instructs a consumer to dissolve the porous solid and apply the dissolved mixture to the keratinous tissue to produce a treatment effect or benefit to the keratinous tissue such as skin and / or hair. The communication can be printed material linked directly or indirectly to the packaging containing the composition. Alternatively, the communication may be an electronic message or transmission associated with the article of manufacture. Alternatively, communication

<img file="MX337657B_D0088.tif" />

Industrial 'NSTITUTOMEXiCANO' can describe at least one possible use, capacity, distinctive feature and / or property of the article of manufacture.

SAW. Examples

The following examples further describe and demonstrate the embodiments that are within the scope of the present invention. These examples are provided for illustrative purposes only and should not be construed as limiting the present invention, as many variations of the invention are possible without departing from the spirit or scope of the invention. All amounts exemplified are weight concentrations of the total composition, i.e., weight / weight percentages, unless otherwise specified.

Example 1. Premix of polyvinyl alcohol and qlycerin

The following polymeric premix compositions were prepared for use during the preparation of the soluble porous solids of the present invention:

<td>Component</td><td>1A</td><td>1 B</td>

<td>Distilled water</td><td> 78.0</td><td> 70.7</td>

<td>Glycerin</td><td> 2.0</td><td> 7.3</td>

<td>Polyvinyl alcohol '</td><td> 20.0</td><td> 22.0</td>

<td>Total</td><td> 100.0</td><td> 100.0</td>

^to 87-89% hydrolyzed, MW 85,000 to 124,000 available from Sigma Aldrich (Catalog number 363081, lot 09501 BE)

In a clean, appropriately sized container, distilled water and glycerin are added with stirring at 100-300 rpm. Polyvinyl alcohol is weighed into a suitable container and added slowly to the main mix in small increments using a spatula,

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INDUSTRIAL - while continuing to stir while avoiding the formation of visible lumps. Mixing speed is adjusted to minimize foaming. The mixture is slowly drawn to 85C while continuing to stir and then allowed to cool to room temperature. The opaque mixture is allowed to settle overnight, resulting in a clear amber solution.

Example 2. Commercial Hair Conditioning Liquid Product (Pantene Pro-V)

A liquid hair conditioner was purchased for use during the preparation of the soluble porous solids of the present invention. The product was

Pantene Pro-V Always Smooth Conditioner, 750 ml, which was distributed by Procter and Gamble, Cincinnati, OH. The product was purchased in January 2008 under lot number 71505395BC. The ingredients listed on the bottle were: water, stearyl alcohol, cyclopentasiloxane, cetyl alcohol, stearamidopropyl dimethylamine, glutamic acid, dimethicone, panthenol, panthenyl ethyl ether, benzyl alcohol, fragrance,

EDTA, methylchloroisothiazolinone, methylisothiazolinone.

Example 3. Commercial hair conditioning liquid product (Matrix Biolaqe)

A liquid hair conditioner was purchased for use during the preparation of the soluble porous solids of the present invention. The product was Matrix

Biolage Detangling Solutlon, 33.8 fluid ounces, which was distributed by Matrix LLC, New

York, NY. The product was purchased in February 2008 under lot number GC048. The ingredients listed on the bottle were: water, cetearyl alcohol, behentrlmonium methosulfate, cetyl alcohol, cyclopentasiloxane, behentrimonium chloride, phenoxyethanol, methylparaben, amodimethicone, fragrance, dimethiconol, stearamine oxide, propylene glycol,

C11-15 pareth-7, C12-16 pareth-9, glycerin, trideceth-12, polysorbate 20, citric acid,

<img file="MX337657B_D0089.tif" />

IMPI

INSTITUTO MEXICANO DI LA PROPERTY sunflower extract, bitter almond kernel oil, ^ rffféh hop extract, ext. Violet 2, Pollen Extract, Blue 1. Example 4, Fast Dissolving Non-Foaming Porous Solid Conditioner

The following soluble porous solid is prepared in accordance with the present invention:

<td>Component</td><td>% in weigh</td>

<td>Polyvinyl alcohol premix of Example 1</td><td> 40.0</td>

<td>Glycerin</td><td> 1.2</td>

<td>Commercial Conditioner (Pantene Pro-V) from Example 2</td><td> 51.8</td>

<td>Tween-60^to</td><td> 7.0</td>

<td>Total</td><td> 100.0</td>

^to Available from Sigma, catalog number P1629, lot no. 057K0115

The above composition is prepared by mixing using a SpeedMixer ™ DAC 400 FV available from FlackTek, Inc., Landrum, South Carolina. 250 grams of the above components are added in the amounts given in a Max 300 SpeedMixer ™ plastic jar with all components at room temperature. The mixture is thoroughly mixed within the SpeedMixer ™ which is operated at a speed of approximately 2750 revolutions per minute for a period of time of at least 30 seconds. Approximately 20 grams of this mixture is reserved for viscosity measurements. The viscosity of the mixture is approximately 7000 to 9000 cps at 1 s'¹.

The remainder of the above mix is ​​transferred to a approximately 5 quart stainless steel container from a KitchenAid ® Mixer Model K5SS (available from Hobart Corporation, Troy, OH) and fitted with a flat whisk attachment. The mixture is vigorously aerated at high speed for about 3 minutes. The resulting aerated mixture is evenly dispersed

<img file="MX337657B_D0090.tif" />

<img file="MX337657B_D0091.tif" />

with a spatula inside circular Teflon molds (the straight edge of the rubber spatulas is used to remove excess foam, leaving an even flat surface flush with the top of the mold) with a diameter of 4.15 cm and a depth 0.7 cm, weighed before and after with average wet mix weights of 2.6 +/- 0.04 grams, indicating an average wet foam density of approximately 0.28 grams / cm³.

The separated molds are then placed in a convection oven at 75C for 30 minutes, and then placed in a convection oven at 40C to dry overnight. The next day, the molds containing the dry mix are weighed by subtracting the original mold weights, which indicate dry weights of 0.60 +/- 0.02 grams. The resulting porous solids are removed from the molds with the help of a thin spatula and tweezers, and the thicknesses are measured with a gauge giving 5.0 +/- 0.4 mm, which indicates an average resulting dry density of approximately 0.09 grams / cm.³ and with an average base weight of 444 grams per square meter (GSM). It is determined (using the methodologies described herein) that the resulting solids: (I) are predominantly open-celled; (I) exhibit good flexibility with a qualitative fragility / flexibility evaluation of 3; (II) they exhibit good cohesion with a qualitative evaluation of cohesion of 3.5; (¡V) have a fast dissolution rate with a hand dissolution value of only 3 rubs; (v) that they provide good conditioning to the hair; and (vi) that they are practically non-foaming with a foam volume of less than 10 ml.

Comparative Example 5, Slow Dissolving Non-Foaming Porous Solid Conditioner

The following soluble porous solid is not prepared according to. •• λ

-MEXICAN INSTITUTE

PROPERTY -M present invention and is included for comparative purposes for derrfÍtWá¹Best Important Aspects of the Present Invention:

<td>Component</td><td>% in weigh</td>

<td>Polyvinyl alcohol premix of Example 1</td><td> 60.0</td>

<td>Commercial Conditioner (Pantene Pro-V) from Example 2</td><td> 40.0</td>

<td>Total</td><td> 100.0</td>

The above composition is prepared by mixing using a SpeedMixer ™ DAC 400 FV available from FlackTek, Inc., Landrum, South Carolina. 110 grams of the above components are added in the amounts given in a Max 300 SpeedMixer ™ plastic jar with all components at room temperature. The mixture is thoroughly mixed within the SpeedMixer ™ which is operated at a speed of approximately 2750 revolutions per minute for a period of time of at least 30 seconds. Approximately 8 grams of this mixture is reserved for viscosity measurements. The viscosity of the mixture is approximately 95,000 to 140,000 cps at 1 s'¹.

The remainder of the above mix is ​​transferred to a 5-quart stainless steel container from a KitchenAid ® Mixer Model K5SS (available from Hobart Corporation, Troy, OH) and fitted with a flat whisk attachment. The mixture is vigorously aerated at high speed for about 4 minutes. The resulting aerated mixture is evenly dispersed with a spatula inside circular Teflon molds (the straight edge of the rubber spatulas is used to remove excess foam, leaving an even flat surface flush with the top of the mold) with a 4.15 cm diameter and 0.7 cm depth, weighed before and after with average wet mix weights of 3.3 + / 88

<img file="MX337657B_D0092.tif" />

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0.06 grams, indicating an average wet foam density of approximately 0.35 grams / cm³.

The separated molds are then placed in a convection oven at 75 C for 30 minutes, and then placed in a convection oven at 40 C to dry overnight. The next day, the resulting porous solids are removed from the molds with the help of a thin spatula and tweezers, and the resulting solids are weighed, indicating an average dry weight of 0.69 +/- 0.08 grams. The thicknesses of the resulting solids are measured with a gauge giving 4.2 +/- 0.2 mm, which indicates an average resulting dry density of approximately 0.12 grams / cm³ and an average basis weight of 510 grams per square meter (GSM). It is determined (using the methodologies described herein) that the resulting solids: (i) are predominantly closed cell; (ii) exhibit poor flexibility with a qualitative assessment of brittleness / flexibility of 1; (iii) exhibit poor cohesion with a qualitative evaluation of cohesion of 1.0; (iv) they are not soluble with a hand dissolution value greater than 30 rubs; and (v) that they provide poor consumer experience during use (due to poor dissolution resulting in non-soluble pieces).

Example 6. Fast dissolving non-foaming porous solid conditioner

The following soluble porous solid is prepared according to the present invention by diluting the identical composition of Example 5. The viscosity of the mixture is approximately 95,000 to 140,000 cps at 1 s'¹.

The viscosity of the mixture is decreased to within the limits of the present invention by dilution with deionized water. Approximately 90 grams of deionized water is added to the mixture until the resulting viscosity reaches approximately 8000 to 15,000 cps at 1 s'¹.

<img file="MX337657B_D0093.tif" />

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Approximately 100 grams of the reduced "Viscósti" mixture is transferred to a 5-quart stainless steel container of W Ull iliezcladui KitchenAid® Model K5SS (available from Hobart Corporation, Troy, OH), and fitted with a flat beater accessory . The mixture is aerated vigorously at high speed for about 4 minutes. The resulting aerated mixture is evenly dispersed with a spatula inside circular Teflon molds (the straight edge of the rubber spatulas is used to remove excess foam, leaving an even flat surface flush with the top of the mold) with a 4.15 cm diameter and 0.7 cm depth, weighed before and after with average wet mix weights of 2.3 + / 10 0.03 grams, indicating an average wet foam density of approximately

0.24 grams / cm³.

The separated molds are then placed in a convection oven at 75C for 30 minutes, and then placed in a convection oven at 40C to dry overnight. The next day, the molds containing the dry mix are weighed by subtracting the original mold weights, which indicate dry weights of

0.29 +/- 0.03 grams. The resulting porous solids are removed from the molds with the help of a thin spatula and tweezers, and the thicknesses are measured with a gauge giving 5.7 +/- 0.4 mm, indicating an average resulting dry density of approximately 0.04 grams / cm³ and an average basis weight of 214 grams per square meter (GSM).

It is determined (using the methodologies described herein) that the resulting solids: (i) are predominantly open-celled; (I) exhibit acceptable flexibility with a qualitative assessment of brittleness / flexibility of 2; (iii) exhibit acceptable cohesion with a qualitative evaluation of cohesion of 2; (iv) they have a fast dissolution rate with a hand dissolution value of only 5 rubs;

(v) that they provide good conditioning to the hair; and (I saw) that they are practically not

IMPI

<img file="MX337657B_D0094.tif" />

sparkling wines with a foam volume less than 10 ml.

Comparative Example 7. Slow Dissolving Non-Foaming Porous Solid Conditioner

The following soluble porous solid is not prepared in accordance with the present invention and is included for comparative purposes to better demonstrate the important aspects of the present invention. A blend composition is prepared with a viscosity greater than that of Example 6, but less than that of Comparative Example 5:

<td>Component</td><td>% in weigh</td>

<td>Polyvinyl alcohol premix of Example 1</td><td> 28.0</td>

<td>Commercial Conditioner (Pantene Pro-V) from Example 2</td><td> 42.0</td>

<td>Skinned water</td><td> 30.0</td>

<td>Total</td><td> 100.0</td>

The above composition is prepared by mixing by means of a

SpeedMixer ™ DAC 400 FV available from FlackTek, Inc., Landrum, South Carolina. 110 grams of the above components are added in the amounts given in a Max 300 SpeedMixer ™ plastic jar with all components at room temperature. The mixture is thoroughly mixed within the SpeedMixer ™ which is operated at a speed of approximately 2750 revolutions per minute for a period of time of at least 30 seconds. Approximately 8 grams of this mixture is reserved for viscosity measurements. The viscosity of the mixture is approximately 30,000 to 35,000 cps at 1 s'¹.

The remainder of the above mix is ​​transferred to a approximately 5 quart stainless steel container from a KitchenAid ® mixer.

<img file="MX337657B_D0095.tif" />

Mexican Institute of Industrial Property

Mixer Model K5SS (available from Hobart Corporation, Troy, OH) and provided with a flat beater accessory. The mixture is vigorously aerated at high speed for about 8 minutes. The resulting aerated mixture is evenly dispersed with a spatula inside circular Teflon molds (the straight edge of the rubber spatulas is used to remove excess foam, leaving an even flat surface flush with the top of the mold) with a 4.15 cm diameter and 0.7 cm depth, weighed before and after with average wet mix weights of 3.3 +/- 0.06 grams, indicating an average wet foam density of approximately 0.33 grams / cm³.

The separated molds are then placed in a convection oven at 75 C for 30 minutes, and then placed in a convection oven at 40 C to dry. After five days, the resulting porous solids are removed from the molds with the help of a thin spatula and tweezers, but the foams were very brittle to obtain accurate dry weights and densities. It is determined (using the methodologies described herein) that the resulting solids: (i) are predominantly closed cell; (ii) exhibit poor flexibility with a qualitative assessment of brittleness / flexibility of 1.0; (iii) exhibit poor cohesion with a qualitative cohesion evaluation of 1.0; (iv) they are not soluble with a hand dissolution value greater than 30 rubs; and (v) they provide a poor consumer experience during use (due to poor dissolution resulting in non-soluble pieces).

Example 8 Rapid Dissolving Non-Foaming Porous Solid Conditioner

The following soluble porous solid is prepared in accordance with the present invention:

<img file="MX337657B_D0096.tif" />

<img file="MX337657B_D0097.tif" />

<td>Component</td><td>% in weigh</td>

<td>Polyvinyl alcohol premix of Example 1B</td><td> 59.9</td>

<td>Glycerin</td><td> 1.2</td>

<td>Commercial Conditioner (Matrix Biolage) of Example 3</td><td> 18.6</td>

<td>Tween-60^to</td><td> 4.1</td>

<td>Distilled water</td><td> 17.4</td>

<td>Total</td><td>100Ό</td>

^to Available from Sigma, catalog number P1629, lot no. 057K0115

The above composition is prepared by mixing using a SpeedMixer ™ DAC 400 FV available from FlackTek, Inc., Landrum, South Carolina. 125 grams of the above components are added in the amounts given in a Max 300 SpeedMixer ™ plastic jar with all components at room temperature. The mixture is thoroughly mixed within the SpeedMixer ™ which is operated at a speed of approximately 2750 revolutions per minute for a period of time of at least 30 seconds. Approximately 8 grams of this mixture is reserved for viscosity measurements. The viscosity of the mixture is approximately 9500 to 10,500 cps at 1 s'¹.

Approximately 115 grams of the remainder of the above mixture is transferred to a 5-quart stainless steel container from a KitchenAid® Model K5SS mixer (available from Hobart Corporation, Troy, OH), and fitted with a flat whisk attachment. The mixture is aerated vigorously at high speed for about 5 minutes. The resulting aerated mixture is evenly dispersed with a spatula inside circular Teflon molds (the straight edge of the rubber spatulas is used to remove excess foam, leaving an even flat surface flush with the top of the mold) with a 4.15 cm diameter and 0.7 cm depth, weighed before and after with average mix weights

j.no Pl f

ÍNLUS i RtAL ^ ¾¾ TPjgy^- 2.9 +/- 0.13 grams wet, indicating an average wet foam density of about 0.31 grams / cm³.

The separate molds are then placed in a 40C convection oven to dry overnight. The next day, the molds containing the dry mix are weighed by subtracting the original mold weights, which indicate dry weights of 0.71 +/- 0.03 grams. The resulting porous solids are removed from the molds with the help of a thin spatula and tweezers, and the thicknesses are measured with a gauge giving 5.1 +/- 0.1 mm, which indicates an average resulting dry density of approximately 0.10 grams / cm³ and with an average basis weight of 525 grams per square meter (gm²). It is determined (using the methodologies described herein) that the resulting solids: (i) are predominantly open-celled; (I) exhibit good flexibility with a qualitative assessment of brittleness / flexibility of 4.0; (iii) exhibit good cohesion with a qualitative evaluation of cohesion of 4.0; (¡V) have a fast dissolution rate with a hand dissolution value of only 8 rubs; (v) provide good conditioning to the hair; and (vi) are practically non-foaming with a foam volume less than 10 ml.

Discussion of Examples

The foregoing representative examples are intended to demonstrate the key aspects of the present invention. Example 4 is in accordance with the present invention and is produced from a processing mixture comprising polyvinyl alcohol, a commercial conditioner (Pantene Pro-V), a nonionic surfactant and a viscosity of between 7,000 to 9,000 cps at 1 s¹. Accordingly, Example 4 results in porous solids of predominantly open cells with fast dissolution, good flexibility, good cohesion while being virtually non-foaming. The

Comparative Example 5 is not in accordance with the present invention, and is produced from

<img file="MX337657B_D0098.tif" />

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INDUSTR'-U - from a processing mixture comprising polyvinyl alcohol, a commercial condition (Pantene Pro-V), but with a significantly higher viscosity than 95,000 to 140,000 cps at 1 s'¹. Accordingly, Comparative Example 5 results in porous solids of predominantly closed cells that are not soluble, while having poor flexibility and poor cohesion. Example 6 is in accordance with the present invention, and is produced from the start processing mixture identical to that of Example 5, but the processing mixture is diluted with water to enable a significantly lower viscosity of between 8000 to 15,000 cps ais'¹. Accordingly, Example 6 results in porous solids of predominantly open cells with rapid dissolution as well as acceptable flexibility, acceptable cohesion, and are virtually non-foaming. Comparative Example 7 is not in accordance with the present invention, and is produced from a processing mixture comprising polyvinyl alcohol, a commercial conditioner (Pantene Pro-V), but with a viscosity between that of Comparative Example 5 and of Example 6 between 30,000 to 35,000 cps iso '¹. Accordingly, Comparative Example 7 results in porous solids of predominantly closed cells that are not soluble, while having poor flexibility and poor cohesion. Example 8 is in accordance with the present invention and is produced from a processing mixture comprising polyvinyl alcohol, a commercial conditioner (Matrix Biolage), a nonionic surfactant, and a viscosity of between 9500 to 10,500 cps at 1 s '¹. Accordingly, Example 8 results in porous solids of predominantly open cells with fast dissolution, good flexibility, good cohesion while being virtually non-foaming.

Taken together, the aforementioned examples demonstrate the discovery that fast-dissolving, open-cell, non-foaming porous solids in accordance with the present invention can be produced as long as the

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Viscosity of the processing mixture is within the desired range (or is otherwise adjusted). Importantly, it has been surprisingly found that this finding remains valid regardless of the components of the polymer blend (see Comparative Example 5 relative to Example 6, which have the same composition and differ only by dilution of the processing mixture original), which goes against the conventionally accepted belief that it is the type of polymer and specifically the molecular weight, the fundamental conductor of the dissolution of the porous solid. Furthermore, the above examples demonstrate the beneficial effect of an added nonionic surfactant on the structural properties of fast-dissolving, open-cell, porous solids (flexibility and cohesion) while not sacrificing the consumer's expected perception of Solids are not foaming during use.

The dimensions and values ​​set forth herein are not to be understood as strictly limited to the exact numerical values ​​mentioned.

Instead, unless otherwise specified, each of those dimensions will mean both the mentioned value and a functionally equivalent range spanning that value. For example, a dimension expressed as "40mm" will be understood as "approximately 40mm".

Any document cited herein, including any patent or application referenced or related, is hereby incorporated by reference in its entirety, unless expressly excluded or limited in any other way. The citation of any document does not constitute an admission that it is prior industry with respect to any invention described or claimed herein or that individually or in combination with any other reference or references, it teaches, suggests or describes said invention. Furthermore, to the extent that

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Any meaning or definition of a term in this document contains the meaning or definition of the same term in a docunlSUlU liiuuipuiadu as a reference, the meaning or definition assigned to that term in this document shall govern.

While particular embodiments of the present invention have been illustrated and described, it will be apparent to those with experience in the industry that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, it has been intended to encompass in the appended claims all changes and modifications within the scope of the invention.