Antiperspirant compositions and methods

ANTIPERSPIRANT COMPOSITIONS AND METHODS

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. Provisional App. No. 61/678,642 filed August 2,2012.

FIELD OF THE INVENTION

The present disclosure relates to antiperspirant compositons and methods relating thereto.

BACKGROUND 01' THE INVENTION

There nrc many factors that contribute to the purchase intent of n consumer when looking for a deodorant or antiperspirant products. like the expected previously experienced odor and wetness protection. residue, and skin feel. One of the often overlooked purchase intent drivers is scent. When formulating products, a balance is often strack between performance and other properties which encourage purchase. Secnt is one of the purchase encouraging properties often sacrificed for performance. thus, there is a need for deodorant and antiperspirant products that have better fragrance expression.

SUMMARY OF THE. INVENTION

A mcthoil of enhancing fragrance expression, comprising fonnulming nn antiperspirant composition so that no more than 15% by weight of the composition. of the non perfume and non antiperspirant active ingredients. have a polarity between 3 MPa^|f?and 15 MPa¹.

A method of enhancing fragrance expression in a solid antiperspirant product. comprising formulating an antijwrspiranl composition comprising alxiui 7% to alwul 2()% of a priiuury structurant; about 10 to about 25% of an antiperspirant active: a perfume: and additional chassis ingredients; wherein about 15% or less, by weight of the composition. of the additional chassis ingredients have a polarity greater than about 3.0 MPa¹’’·.

BRIEF DESCRIPTION ()Ι· Till· DRAWINGS

FIG. I is a graph depicting the polarity (x-axis) and hydrogen bonding tv axis) ol chassis ingrédients and perfume raw material*- in a currently niarkeled pnxlucl.

IT(i. 2 is a graph depicting the polarity (x-axis) and hydrogen bonding (y axis) ol chassis ingredients and pci fume raw iiiaterials when formulated as described herein

Fit >. 3 is a graph depicting ihc polarity (x-axis) and hydrogen bonding (y axis) til n variety of perfume raw materials.

FIG. 4 is n chromatogram overlay irom a headspace gas dinimatography.

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UO 2OI4rtl226’t>

DliTAII 1:1) DI-SCKII’T TON 01-111): (NVl-NKON

The tenu 'anhydrous*' as used herein ιικ-ans substantially five of added or free water.

Ι·η'ηι a fonniilaikin si.indp-ini, this means thia the nnhydnms antiperspirant stick compositions uf the present invention contain less than alunit |*-ί, ami mure specifically /cm percent, by weight of irw or added waler, other titan the water of ItyJration typically associated with the particulate antiperspirant active prior to tonnulaiion lhe tenu 'ambient conditions'' as used herein refers to sumumding conditions undei ID about one atmosphere of pressure. al about 50'« relative humidity, and al about 25 °C. unless otherwise specified. All values, amounts. ami measurements described herein are obtained under ambient conditions unless otherwise specified.

lhe tenu majority’ re.lcrs to greater titan about 515» of the Male*! component or parameter.

The term polarity'* ns used herein is tlehned by lite Hansen Solubility Parameter lor solubility.

’’Substantially free of’ refers to about 2'.i or less, alxnit 15»'· or less, or altiui 0.If? or less of a stated ingredient. free of* refers Io m> detectable amount of lhe slated ingredient or thing.

The. term volatile’* as used herein refers lo those materials that have a nicresurahk vapor 20 pressure at 25 ·(*. Such vapor pressures typically range Imm about (HI! niillinwicts of Mercury (mm Hello about 6 mmHg, more typically Inuit about (1.(12 mmllg to about 1.5 mmHg; and have an average hailing point at on»· tl) aimosplwre ol pressure of less than about 250 I*. titorc typically less than about 235 *1*. Conversely, tt-e terni non-voltitile rulers tn those materials that are not 'volatile’ as defined herein.

All pclwnlagcs. pans and ratios are bv weight of tire total composition, unless otherwise specified. All such weights as they fieri a, n in the lishvl ingredients are based «π the specific ingreikent level and. thcrelore. do not include solvents, carriers, by-pnxluiis, filler or i»hcr miner inercihents that may he included in commereially uvailahle materials, unless mberwisc specified.

When hxiking al currently marketed invisible solid antiperspirant products, eonstimcix 30 will often rank the performance of a pnxluct by attribute. I *nsiirprisingly. invisible solid produits often gel midland to low scores tut scent expression This is due. al least in part, lo the trapping ol* fragrance materials within the composition so that they are not sufficiently expressed at application.

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Products in the solid form tend to use more wax than other forms of antiperspirant and deodorant, like soft solid, in order to attain the desired product hardness that is the signature of the solid form. The downsides to larger amounts of wax include cost, whiteness in appearance on skin, and a feeling of waxy residue after application. To reduce these negative attributes of wax, other materials are added to the formulation and these materials often have negative effects on perfume expression. Additionally, the amount of wax itself appears to have an impact on perfume expression.

Without being limited by theory, the present inventors believe that by modifying a formulation to limit the overlap of the polarity of chassis ingredients with those in a perfume, the resulting product will have a better scent expression. See, for example, FIG. 1 which shows an overlap in polarity between some of the product ingredients and some of the perfume rawmaterials and FIG. 2 which shows how reformulating the product (Inventive Formulation 1) minimizes the overlap between the product ingredients and the perfume raw materials. When these two formulations were compared head-lo-head, Table A, below, shows the significant wins for Inventive Formulation 1 in both fragrance at application and scent liking at application. Comparative Formulation 1 and Inventive Formulation 1 both contained the same perfume at the same level.

TABLE A

<td></td><td colspan="2"> Comparative Formula #1</td><td colspan="2"> Inventive Formula #1</td>

<td> Fragrance at Application</td><td> 6.32</td><td></td><td> 6.91</td><td></td>

<td> Scent Liking at Application</td><td> 6.8</td><td></td><td> 7.15</td><td></td>

Moreover, there was also an efficacy boost in wetness as seen in Table B, below.

TABLE B - Analysis of Sweat Amount - Treatment Estimates

Baseline

Day 5

Day 10

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<td> Treatment</td><td> [N1 Mean (SE)</td><td> Sweat (mg)</td><td> [N] Mean (SE)</td><td> Sweat (mg)</td><td> [N] Mean (SE)</td><td> Sweat (mg)</td>

<td> [C] Comparative Formula #1</td><td> [28] 2.71 (0.024)</td><td> 508</td><td> [28] 2.43 (0.028)</td><td> 267 (47%)</td><td> [28] 2.42 (0.027)</td><td> 263 (48%)</td>

<td> [D] Inventive Formula #1</td><td> [28] 2.71 (0.024)</td><td> 509</td><td> [28] 2.41 (0.028)</td><td> 255 (50%)</td><td> [28] 2.37 (0.027)</td><td> 237 (53%)</td>

When looking lo quantify the formulation attributes that would lead to a better scent expressing product, several avenues are identified. The first is a maximum total percentage of non-pcrfumc and non-antipcrspirant ingredients within a composition that can have a polarity value between 3 MPa^1/2 and 15 MPa^1/2. In other words, one would look at the total of all ingredients, excluding perfumes and antiperspirants, with a polarity value between 3 MPa¹⁷² and 10 MPa^l/2 and the percentage of those ingredients can be 25% or less, although some formulations may be even lower at, for example, 23%, 20, 17, 15, 12, 10, 8, 6, 4, 3, or 2%, or less.

There are some non-perftnne, non-antiperspirant components which appear to have a larger impact on perfume expression. Some of these components have a polarity of 15 MPa^1/2 or more, like castor wax. Thus, when looking at the maximum total percentage parameter, there are occasions, when those ingredients with a polarity of 15 MPa^1/2 or more may be formulated at an amount of about 4%, 3,2, or 1%, or less. The composition may be substantially free of or free of castor wax. The composition may also be free of non-perfume and non-antiperspirant ingredients with a polarity of 10 MPa^l/2or more.

Another option for attaining better fragrance expression is through the control of the polarity of certain ingredients in the composition. For example, an antiperspirant composition often has a primary structurant, an antiperspirant active, a perfume, optional ingredients, and then additional chassis ingredients like an additional structurant, a solvent, and/or a non-volatile organic fluid. The limitation of polarity on the additional chassis ingredients can also help perfume expression. This is seen, for example, where the composition contains 10% or less, by weight of the composition, of additional chassis materials with a polarity that overlaps with the majority of the majority of the perfume raw materials by 50% or more. Some formulations may be even lower and comprise 9%. 8, 7, 6, 5, 4, or 3%, or less, by weight of the composition, of additional chassis ingredients with a polarity overlapping the majority of perfume raw materials by 50% or more. The composition may be substantially free of or free of castor wax.

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A third option for attaining better fragrance expression is through the control of the polarity of additional chassis materials by limiting the maximum amount of additional chassis materials that can have a polarity of 3.0 MPa^1/2 or more to 15% or less by weight of the composition. Some formulations may have even less and comprise 12%, 10, 8, 6, 5,4, or 3%, or less, by weight of the composition, of additional chassis materials that have a polarity of 3.0 MPa^1/2 or more.

Another parameter that can be helpful to formulate antiperspirant products with better scent expression is hydrogen bonding (H-bonding), as seen in FIGS. 1-3. As polarity increases, hydrogen bonding also naturally increases making it harder to prevent overlap of perfume raw materials and other ingredients, especially when the polarity increases beyond 3.0 MPa^l/2. Thus, it is also helpful to limit the components with II-bonding between about 3.0 MPa^1/2 and about 10 MPa^1/2 to less than about 25%. As seen in FIG. 2, there are many more options of materials with a H-bonding below 4 MPa^IZ2, when you go below a polarity of 3 MPa^1/2.

Moreover, further support for the fragrance expression benefits of formulating a composition according to the teachings Itère can be seen in Fig. 4. In Fig. 4, headspace gas chromatography was run on Comparative Example l(rcd/lowcr graph) and Inventive Example 5 (blue/upper graph). As can be seen from FIG. 4, for the six perfume raw materials (PRM’s) measured, Inventive Example 5 displayed a significantly higher amount of fragrance in the head space than that of Comparative Example 1. The average ratio across the PRM’s expressed in the inventive formula versus the comparative formula was 1.7.

Any of these options may be combined in any combination to help formulate for enhanced scent expression.

ANTIPERSPIRANT COMPOSITION

The antiperspirant compositions as described herein can contain a primary structurant, an antiperspirant active, a perfume, and additional chassis ingredient(s). The antiperspirant composition may further comprise other optional ingredient(s). The compositions can be in the form of a solid stick. The compositions can have a product hardness of about 600 gram force or more. The compositions may be free of dipropylene glycol, added water, castor wax, or any combination thereof. The antiperspirant composition may be anhydrous. The antiperspirant composition may be free of added water.

Hardness

The antiperspirant compositions of the present invention can have a product hardness of least about 600 gram· force, more specifically from about 600 gram-force to about 5.000

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WO 2014/022670 PCT/US2013/053232 gram·force, still more specifically from about 750 gram·force to about 2,000 gram-force, and yet more specifically from about 800 gram·force to about 1,400 gram-force.

The term product hardness or hardness as used herein is a reflection of how much force is required to move a penetration cone a specified distance and at a controlled rate into an antiperspirant composition under the test conditions described herein below. Higher values represent harder product, and lower values represent softer product. These values are measured at 27 °C, 15% relative humidity, using a TA-XT2 Texture Analyzer, available from Texture Technology Corp., Scarsdale, N.Y., U.S.A. The product hardness value as used herein represents the peak force required to move a standard 45-degree angle penetration cone through the composition for a distance of 10 nun at a speed of 2 mm/second. The standard cone is available from Texture Technology Corp., as part number TA-15, and has a total cone length of about 24.7 mm, angled cone length of about 18.3 nun, and a maximum diameter of the angled surface of the cone of about 15.5 mm. The cone is a smooth, stainless steel construction and weighs about 17.8 grams.

Primary Structurants 'lhe antiperspirant compositions of the present invention comprise a suitable concentration of a primary structurant to help provide the compositions with the desired viscosity, rheology, texture and/or product hardness, or to otherwise help suspend any dispersed solids or liquids within the composition.

The term solid structurant as used herein means any material known or otherwise effective in providing suspending, gelling, viscosifying, solidifying, and/or thickening properties to the composition or which otherwise provide structure to the final product form. These solid structurants include gelling agents, and polymeric or non-polymeric or inorganic thickening or viscosifying agents. Such materials will typically be solids under ambient conditions and include organic solids, crystalline or other gellants, inorganic particulates such as clays or silicas, or combinations thereof.

The concentration and type of solid structurant selected for use in the antiperspirant compositions will vary depending upon the desired product hardness, rheology, and/or other related product characteristics. For most structurants suitable for use herein, the total structurant concentration ranges from about 5% to about 35%, more typically from about 10% to about 30%, or from about 7% to about 20%, by weight of the composition.

Non-limiting examples of suitable primary structurants include stearyl alcohol and other fatty alcohols; hydrogenated castor wax (e.g., Castorwax MP80, Castor Wax, etc.); hydrocarbon waxes include paraffin wax, beeswax, carnauba, candelilla, spermaceti wax, ozokerite, ceresin.

WO 2914/02267(1

PC17US2913/053232 baysbeny, synthetic waxes such as I'isher-lropsch waxes, and mtctwrystalline wax; polyethylenes with molecular weight of 200 to l(KX) daltons; solid triglycerides; behenyl alcohol, or combinations thereof.

Other non-limiting examples of primary structurants suitable lor use herein are described 5 in U.S. I’at. No. 5,976.514 (Guskey et al.) and U.S. Pat. No. 5.891,424 (Bret/ler el al.).

Antiperspirant Active

The antiperspirant stick compositions of the present invention can comprise a particulate antiperspirant. active suitable for application to human skin. The concentration of antiperspirant 10 active in the composition should be sufficient to provide the desired perspiration wetness and odor control from the antiperspirant stick formulation selected.

Hie antiperspirant stick compositions of the present invention comprise an antiperspirant active al concentrations of from about 0.5% to about 60%, and more specifically fn>m about 5% to about 35%. by weight of the composition. These weight percentages are calculated on an 15 anhydrous metal salt basis exclusive of waler anti any complexing agents such as, for example, glycine, and glycine salts, lhe antiperspirant aeiivc as formulated tn the composition can he in the form of dispersed paniculate solids having an average particle size or equivalent diameter of less than about liX) microns, more specifically less than about 20 microns, and even more specifically less than about 10 microns lhe antiperspirant active for use in the anhydrous antiperspirant compositions of (he present invention may include any compound, composition or other material having antiperspirant activity. More specifically, the antiperspirant actives may include astringent metallic salts, especially inorganic and organic salts of aluminum, zirconium and zinc, as well as mixtures thereof, liven more specifically, the antiperspirant actives may include aluminum25 containing and/or zirconium-coniaining salts or materials, such as. for example. aluminum halides, aluminum chlorohydrate. aluminum hydroxyhalidcs, zirconyl oxyhalides, zirconyl hydroxyhalidcs, and mixtures thereof.

Aluminum salts for use in lhe anhydrous antiperspirant slick compositions include those that conform to ihe formula:

Ald01I),Cl_b xlbO, wherein a is from about 2 to about 5;

the sum of a and b is about 6;

x is from about I toalmut 6: and a, h, and x may have non-integer values.

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X

More specifically, aluminum chlorohydroxides referred to as 5/6 basic chlorohydroxide may be used, wherein a=5. and 2/3 basic chlorohydroxide. wherein a=4.

I’rocesses for preparing aluminum sails are disclosed in ILS. I’at. No. 3.887,692. Gilman, issued Jun. 3, 1975; U.S. I’at. No. 3,904.741, Jones ct al., issued Sep. 9, 1975; U.S. I’at. No.

4.359,456, Gosling cl al., issued Nov. 16. 1982; and British Patent Specification 2,048.229,

Fitzgerald et al., published Dec. 10, 1980.

Mixtures of aluminum salts are described in British Patent Specification 1,347.950. Shin et al., published leh. 27. 1974.

Zirconium salts for use in (he anhydrous antiperspirant stick compositions include those which conform to the formula:

ΖΚΜΟ1Ι)_ΐα(·ζ. χΙΙ,Ο, wherein a is from about 1.5 to about 1.87;

x is from about 1 to about 7; and a and x may b&lt;Mb have non-integcr values.

'Ihcsc zirconium salts are described in Belgian Patent 825,146. Schmitz. issued Aug. 4, 1975. Zirconium salts that additionally contain aluminum and glycine, commonly known as ZAG complexes. are believed to he especially beneficial. These ZAG complexes contain aluminum chlorohydroxide and zirconyl 20 hydroxy chloride conforming to the above-described formulas. Such ZAG complexes arc described in ILS. Pal. No. 3,792,068, l.uedders et al„ issued Feb. 12, 1974; Great Britain Patent Application 2,144,992, Callaghan el al., published Mar. 20, 1985; and U.S. Pat. No. 4,120.948, Shelton, issued Oct. 17, 1978,

Also suitable for use herein are enhanced efficacy aluininum-zirconium chlorohydrcxamino acid which typically has the empirical formula ΛΙ^ΟΙΙ)(>_η4.ι._ηΗη*ο|(( 'l)(„_rf,*i ,(-ΛΛ_Μ where n is 2.0 to 10.0. preferably 3.0 io X.0; m is about 0.4X to about 1.11 (which corresponds to M:C) approximately equal to 2.1 -0.9), preferably about 0.56 Io about 0.83 (which corresponds to M:CI approximately equal to I .X-1.2); q is about 0.8 to alxmt 4.0, preferably about 1.0 to 2.0; anil ΛΛ is an amino acid such as glycine, alanine, valine, serine, leucine, isoleucine, β-alanine, cysteine, β amino-n butyric acid, or y amino-n butyric acid, preferably glycine. These salts also generally have some water of hydration associated with them, typically on the order of 1 to 5 moles per mole of salt (typically, about I'Z to about 16%. more typically about 4% Io about 13% by weight). These salts arc generally referred to as aluininum-zirconiuni trichlorohydrex or

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WO 2014/022670 PC I7US2013/053232 tetrachlonthydrex when the ΛΙ:Ζτ ratio is between 2 and 6 and as aluminum-zireonium pentach lornhydrex or octaehlcrohydrex when the Al:Zr ratio is between 6 and 10. Hie term aluminum-zireonium chlomhydrex” is intended to embrace all of these forms. The preferred aluminum-zireonium salt is aluminum-zireonium ehlorohydrex-glycinc. Additional examples of 5 suitable high efficacy antiperspirant actives can include Aluminum Zirconium Pentachkirohydrex (iJycinc. Aluminum Zirconium Octachlorohydrex Glycine, or a combination thereof. These high efficacy actives are more fully described in U.S. App. Pub. No. 2(Xt7/(XX)3499 by Shen et al. filed June 30. 2005.

Perfume

Perfumes are often a combination of many raw materials, known as perfume raw materials. Any perfume suitable for use in an antiperspirant composition may be used herein.

Additional Chassis Ingredients

Additional Structurant

The antiperspirant composition can further comprise tin additional structurant. The additional structurant may be present in an amount from 1 % to about 10 ·%. by weight of the composition. Ihe additional structurant(s) will likely be present at an amount less than the primary structurant.

Non-limiting examples of suitable additional structurants include stearyl alcohol and other fatty alcohols; hydrogenated castor wax (e.g., (’iistorwax MP80, Castor Wax, etc.);

hydrocarbon waxes include paraffin wax. beeswax, carnauba, candelilla, spermaceti wax. ozokerite, ceresin, baysberry, synthetic waxes such as fisher Tropsch waxes, and microcryslalline wax; polyethylenes with molecular weight of 2<M> to KXX) daltons; and solid triglycerides; behenyl alcohol, or combinations thereof.

Other non-limiting examples of additional structurants suitable for use herein arc 25 described in I IS. Pat. No. 5,976,514 (Guskey el al.) and 1 i.S. Pal. No. 5.891,424 (Bretzler et al.).

Solvent

Ihe antiperspirant composition of the present invention comprises a solvent at concentrations ranging front about 20% to about 80%, and more specifically from about 30% to about 70%, by weight of the composition. I he solvent can he a volatile silicone which may Ik 30 cyclic or linear.

Volatile silicone'' as used herein refers to those silicone materials that have measurable vapor pressure under ambient conditions. Non-limiting examples of suitable volatile silicones are described in Ί odd el al.. Volatile Silicone fluids for Cosmetics, Cosmetics and Toiletries, 91:27-32(1976).

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The volatile silicone can be a cyclic silicone having from 3 to 7, and more specifically from 5 to 6, silicon atoms, and still more specifically 5, like cyclopentasiloxane. These cyclic silicone materials will generally have viscosities of less than about 10 centistokes at 25 °C.

Linear volatile silicone materials suitable for use in the antiperspirant compositions 5 include those represented by the formula:

<img file="CA2880449C_D0001.tif" />

wherein n is from 1 to 7, and more specifically from 2 to 3. These linear silicone 10 materials will generally have viscosities of less than about 5 centistokes at 25 °C.

Specific examples of volatile silicone solvents suitable for use in the antiperspirant compositions include, but are not limited to, Cyclomethicone D-5; GE 7207 and GE 7158 (commercially available from General Electric Co.); Dow Coming 344; Dow Coming 345; Dow Coming 200; and 1ΧΊ184 (commercially available from Dow Coming Corp.); and SWS-03314 15 (commercially available from SWS Silicones).

Non-Volatile Organic Fluids

Non-volatile organic fluids may be present, for example, in an amount of about 15% or less, by weight of the composition.

Non-limiting examples of nonvolatile organic fluids include mineral oil, PPG-14 butyl 20 ether, isopropyl myristate, petrolatum, butyl stearate, cetyl octanoate, butyl myristate, myristyl myristate, C12-15 alkylbenzoale (e.g., Finsolv.TM.), oclyldodecanol, isostearyl isoslearate, octododecyl benzoate, isostearyl lactate, isostearyl palmitate, and isobutyl stearate.

Other Optional Ingredients

The anhydrous antiperspirant compositions of the present invention may further comprise 25 any optional material that is known for use in antiperspirant and deodorant compositions or other personal care products, or which is otherwise suitable for topical application to human skin.

One example of an optional ingredient is a scent expression material. Scent expression or release technology may be employed with some or all of the fragrance materials to define a desired scent expression prior to use and during use of the antiperspirant products. Such scent 30 expression or release technology can include cyclodextrin complexing material, like beta cyclodextrin. Other materials, such as, for example, starch-based matrices or microcapsules may

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WO 2014/022670 PCT/TS2013/1153232 be employed to hold fragrance materials prior to exposure to bodily-secretions (e.g., perspiration). The encapsulating material may have release mechanisms other than via a solvent; for example, the encapsulating material may be frangible, ami as such, rupture or fracture with applied shear and/or normal forces encountered during application and while wearing. Λ mierocapsule may be made from many materials, one example is polyacrylales.

Another example of optional materials are clay mineral powders such as talc. mica, sericite, silica, magnesium silicate, synthetic fluorphlogopite, calcium silicate, aluminum silicate, bentonite and montomorillonite: pearl pigments such as alumina, barium sulfate, calcium secondary phosphate, calcium carbonate, titanium oxide, finely divided titanium oxide, zirconium oxide, zine oxide, hydroxy apatite, iron oxide, iron titrate, ultramarine blue, Prussian blue, chromium oxide, chromium hydroxide, cobalt oxide, cobalt titanate, titanium oxide coated mica; organic powders such as polyester, polyethylene, polystyrene, methyl methacrylate resin, cellulose. 12-nylon. 6-nvlon, styrene-acrylic acid copolymers. poly propylene, vinyl chloride polymer, tetrafluoroeihylene polymer, boron nitride, fish scale guanine, laked tar color dye’s, laked natural color dyes; and combinations thereof.

Talc, if used at higher levels can produce a significant amount ol white residue which has been found to be a consumer negative for pnxlucl acceptance. Therefore it is best io limit the composition to less than 1091, less than about 8%, less than about 6%, or less than about 3'3, by weight of the composition.

Nonlimiling examples of other optional materials include emulsifiers, distributing agents, antimicrobials, pharmaceutical or other topical active, preservatives, surfactants, anti so forth. Examples of such optional materials are described in U.S. Pat. No. 4,049.792 (Elsnau); U.S. Pal. No. 5.019,375 (Tanner el al ); and U.S. Pat No. 5,429.816 (I lofric.hter el al.).

Methmls

Also included herein are methods. While some compositional attributes are listed below, the compositions included as part of the methods can have any combination of ingredients and attributes as described above.

One method is for enhancing fragrance expression and comprises formulating an antiperspirant comptwition so that no more than about 25'3, by weight of the composition, of the non perfume and non antiperspirant ingredients have a polarity between about 3.0 MPa¹² and about 15 MPa¹ ”, I’urther. the composition may comprise no more than about 20%, by weight of the composition, of noil-perfume ingredients with a ]xdarity of about 3.0 MPa¹*² and about 15 MPa¹’. The composition can have a hardness of 600 gram force or more. The composition may

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WO 2014/022670 PCT/US2013/053232 comprise a primary structurant, and antiperspirant active, a perfume, and additional chassis ingredients. The additional chassis ingredients may comprise an additional structurant, a solvent, a non-volatile organic fluid, or a combination thereof. The composition may further comprise other optional ingredients. The optional ingredients may comprise scent expression materials, clay mineral powders, pigments, emulsifiers, distributing agents, antimicrobials, pharmaceutical or other topical actives, preservatives, surfactants, or combinations thereof. The scent expression materials may comprise a fragrance complexing material, a microcapsule, or a combination thereof. The fragrance complexing material may comprise beta cyclodextrin. The microcapsule may comprise a polyacrylates microcapsule, a gelatin microcapsule, or a combination thereof.

An additional method can include a method of enhancing fragrance expression in a solid antiperspirant product, comprising formulating an antiperspirant composition comprising about 10 to about 20% of a primary structurant: about 10 to about 25% of an antiperspirant active; a perfume; and additional chassis ingredients; wherein about 15% or less, by weight of the composition, of the additional chassis ingredients have a polarity greater than about 3.0 MPa^1/2. The composition may further have 12%, 10, 8, 6, 5,4, 3%, or less, by weight of the composition, of additional chassis ingredients with a polarity greater than about 3.0 MPa^,/2. 1’hc additional chassis ingredients may be selected from the group consisting of an additional structurant, a solvent, a non-volatile organic fluid, and combinations thereof. The composition can have a hardness of 600 gram force or more. The composition may further comprise other optional ingredients. The optional ingredients may comprise scent expression materials, clay mineral powders, pigments, emulsifiers, distributing agents, antimicrobials, pharmaceutical or other topical actives, preservatives, surfactants, or combinations thereof. The scent expression materials may comprise a fragrance complexing material, a microcapsule, or a combination thereof. The fragrance complexing material may comprise beta cyclodextrin. The microcapsule may comprise a polyacrylates microcapsule, a gelatin microcapsule, or a combination thereof.

EXAMPLES

Following are non-limiting inventive and comparative examples. Comparative Example 1 and Inventive examples I -7 are made by adding all ingredients to a vessel, heating the vessel to 85C, mixing for about 30 minutes at 85°C, cooling the composition to about 55-60°C, pouring it into a container (or multiple containers depending on size of the batch), and allowing it to cool to ambient temperature to solidify.

<td> Product Description:</td><td> Comparative Formula # 1</td><td> Inventive Formula # 1</td>

<td> Raw Materials</td><td> Weight %</td><td> Weight %</td>

<td> Aluminum Zirconium Trichlorohydrex Gly</td><td> 24.00</td><td> 24.00</td>

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<td> Cyclopentasiloxane</td><td> 27.95</td><td> 47.55</td>

<td> Cl2-15 alkyl benzoate</td><td> 9.50</td><td> -</td>

<td> PPG-14 Butyl ether</td><td> 6.50</td><td> -</td>

<td> Mineral Oil</td><td> 1.00</td><td> 2.00</td>

<td> Phenyl Trimethicone</td><td> 3.00</td><td> -</td>

<td> White Petrolatum, Super While Proiopei</td><td> 3.00</td><td> 3.50</td>

<td> Steatyl Alcohol</td><td> 14.00</td><td> 16.00</td>

<td> Castor Wax</td><td> 3.85</td><td> -</td>

<td> Ozokerite</td><td> -</td><td> 4.75</td>

<td> Behenyl Alcohol</td><td> 0.20</td><td> 0.20</td>

<td> Cyclodextrin</td><td> 2.00</td><td> -</td>

<td> Talc</td><td> 3.00</td><td> -</td>

<td> Fragrance</td><td> 2.00</td><td> 2.00</td>

<td></td><td> Inventive Example 2</td><td> Inventive Example 3</td><td> Inventive Example 4</td><td> Inventive Example 5</td><td> Inventive Example 6</td><td> Inventive Example 7</td>

<td> Cyclopentasil -oxane</td><td> 31.95%</td><td> 45.55%</td><td> 34,80%.</td><td> 30.95%</td><td> 46.80%·</td><td> 35.30%</td>

<td> Aluminum Zirconium Trichlorohydr ex Glycine Powder</td><td></td><td> 24.00%</td><td> 24.00%</td><td></td><td> 24.00%</td><td> 24.00%</td>

<td> Acid 7.AG</td><td> 25.60%</td><td> -</td><td> -</td><td> 25.60%</td><td> -</td><td> -</td>

<td> Stearyl Alcohol (T)</td><td> 14.50%</td><td> 16.00%</td><td> 15.00%</td><td> 14.50%</td><td> 16.00%</td><td> 15.00%</td>

<td> Behenyl Alcohol (T, AC)</td><td> 0.20%</td><td> 0.20%</td><td> 0.20%</td><td> 0.20%.</td><td> 0.20%</td><td> 0.20%</td>

<td> PPG-14 Butyl Ether (T. AC)</td><td> 2.00%</td><td></td><td> 2.00%</td><td> 2.00%.</td><td></td><td> 2.00%</td>

<td> Petrolatum</td><td> 5.00%</td><td> 3.50%</td><td> 5.00%</td><td> 5.00%</td><td> 3.50%</td><td> 5.00%</td>

<td> Mineral Oil</td><td> 6.00%</td><td> 2.00%</td><td> 4.00%</td><td> 6.00%</td><td> 2.00%</td><td> 4.00%</td>

<td> Talc (T)</td><td> 3.00%</td><td></td><td></td><td> 3.00%</td><td></td><td></td>

<td> Dimethicone</td><td> 5.00%</td><td> .</td><td> 5.00%</td><td> 5.00%</td><td> .</td><td> 5.00%</td>

<td> Polyethylene</td><td> .</td><td> .</td><td> .</td><td> .</td><td> .</td><td> 3.50%</td>

<td> synthetic wax</td><td> .</td><td> .</td><td> .</td><td> 3.50%</td><td> 3.50%</td><td> .</td>

<td> Ozokerite</td><td> 2.50%</td><td> 4.75%</td><td> 4.00%</td><td> -</td><td> -</td><td> -</td>

<td> Cyclodextrin</td><td> 3.00%</td><td> 2.00%</td><td> 4.00%</td><td> 3.00%</td><td> 2.00%</td><td> 4.00%</td>

<td> Max Perfume Level</td><td> 1.25%</td><td> 2.00%</td><td> 2.00%</td><td> 1.25%</td><td> 2.00%</td><td> 2.00%</td>

<td> Total RM</td><td> 100.00%</td><td> 100.00%</td><td> 100.00%</td><td> 100.00%</td><td> 100.00%</td><td> 100.00%</td>

<td> Total % of materials with</td><td> 19.7%</td><td> 16.2%</td><td> 17.2%</td><td> 19.7%.</td><td> 16.2%</td><td> 17.2%</td>

CA 02880449 2016-07-14

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<td colspan="2"> polarity &gt; 3 MPa*'' i</td><td></td><td></td><td></td><td></td><td></td>

<td> '{ of additional chassis materials with polarity &gt; 3 MPa¹·</td><td> 2.20%</td><td></td><td> 2.20'*</td><td> 2.20%</td><td> 1).20%</td><td> 2.20%</td>

(T = having polarity above 3 Ml’a^u‘ Jiltl ireluded in total 'i calculation; AC = having |x>kirity above 3 MPa^K: and included in additional chassis calculalien.i

Ihe. dimensions and values disclosed herein are nol lo he underskxxl as being strictly limited to the exact numerical values recited. Inslead, unless otherwise specified. each such dimension is intended lo mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as “4(1 mm is intended to mean about 40 mm.”

It should be understood that every maximum numerical limitation given throughout this 10 specification will include every lower numerical limitation, as if such lower numerical limitations wen.· expressly written herein. Every minimum numerical limitation given throughout this specification will include ever)' higher numerical limitation, as if such higher numerical limitations were expressly written herein. Ever)' numerical range given throughout this specification will include every narmwer numerical range that falls within such broader 15 numerical range, as if such narrower numerical ranges were all expressly written herein.

Ihe devices, apparatuses, methods, components, and/or compositions of the present invention can include. consist essentially of, or consist of, the components of the present invention as well as other ingredients described herein. As used herein, consisting essentially οΓ means that the devices, apparatuses, methods, components, and/or compositions inay include 20 additional ingredients, but only if the additional ingredients do not materially alter the basic and novel characteristics of the claimed devices, apparatuses, methods, components, and/or compositions.

I he citation οΓ any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, leaches, suggests or discloses any such invention. Further, to the extent dial any meaning or definition of a term in this document

CA 02880449 2016-07-14

WO 2014/022670

I*CI/US2OIJAI5J2J2 conflicts with any meaning or definition of the same (erm in a document referenced, the meaning or definition assigned to that term in this document shall govern.

The scope of the claims should not be limited by the preferred embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.