Water dispersible organic gel agent and a system comprising thereof
Abstract
A gel preparation, comprising to the suspension material compounds and by surfactant so it is clothing comprising a suspension material of a test requirements, and a ring is the gel preparation.
Term
No projected expiry on record.
- Priority
- Filed
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23 claims: 4 independent, 19 dependent
- 1PAT ΕΝ T , 1 . Ve vodě dispergovatelný orgenický gelový prostředek vytvářející kontinuální systém, vyznačující se k t í m , že obsahuje nebezpečnou látku, popřípadě organické rozpouštědlo, déle obsehuje ve vodě rozpustné nebo ve vodě dispergovatelné povrchově aktivní činidlo neiontové, aniontové nebo kationtové nebo směs takových povrchově aktivních činidel, přičemž toto povrchově aktivní činidlo vyhovuje požadavku, že při vnesení nebezpečné látky v množství 50 g, popřípadě v organickém rozpouštědle, a povrchově aktivního činidla v množství 5 g do množství vody o teplotě 50 °C, potřebného k doplnění objemu na 100. ml, zamíchání směsi do získání homogenní emúl-r ze a ponechání této směsi v klidu po dobu 30 minut při teplotě 50 °C, je oddělené množství olejovité vrstvy a tedy odlišné fáze menší než 20 ml a dále obsahuje gelovací činidlo, které je buč pevné nebo kapelné přo teplotě 23 °C a které je rozpustné alespoň z 10 % v kapalné směsi nebezpečné chemikálie a povrchově aktivního činidla při teplotě nad 50 °C, přičemž toto gelovací činidlo má, pokud je pevné, velikost částic menší než 1Q0 mikrometrů a prostředek jako celek obsahuje hmotnostně méně než 3 % vody.
- 2Ve vodě dispergovatelný organický gelový prostředek podle nároku 1, vyznačující se tí m , že nebezpečnou látkou je agrochemikálie.
- 3Ve vodě dispergovatelný organický gelový prostředek / podle nároku 1, vyznačující se tím, že nebezpečnou látkou je prostředek pro ochranu rostlin nebo reguř*, látor růstu rostlin nebo pesticid nebo živina rostlin.
- 4Ve vodě dispergoyatelhý organický gelový prostředek podle nároku 1 až 3, v y z n a č u j í c í se t í m , že gelovací činidlo má velikost částic menší než 20 mikrometrů a obsahuje méně než hmotnostně 1 % vody.
- 5Ve vodě dispergovatelný organický gelový prostředek podle nároku lež 4, vyznačující se tím, že popřípadě obsahuje organické rozpouštědlo nebo směs organických rozpouštědel, přičemž je v nich účinná látka dokonale rozpustná za dané koncentrace a dále dispergant, sekundární zahuštovadlo a další přísady, jako alespoň jeden stabilizátor, alespoň jednu protipěnicí látku, alespoň jeden pufr a alespoň jednu látku proti zamrzání.
- 6Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 ež 5, vyznačuj ící se tím, že obsahuje povrchově aktivní činidlo schopné vytvářet při teplotě nad 70 °C kepalnou fázi s nebezpečnou látkou.
- 7Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 až 7., v y z n a č u j í c í se t í m , že obsahuje povrchově aktivní činidlo schopné vytvářet při teplotě, nad 50 °C kapalnou fázi s nebezpečnou látkou.
- 8Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 až 7, vyznačující se tím, že obsahuje hmotnostně 5,0 ež 95,0 % nebezpečné látky, 1,0 až 50,0 % povrchově aktivního činidla, 0,1 až 50,Q % gelovacího činidla a 0 až 80,0 % rozpouštědla.
- 99· Ve vodě dispergovatelný organický gelový prostředek podle nároku 8, vyznačující se tím, že obsahuje hmotnostně 25 až 80 % nebezpečné látky, 2 až 15 % povrchově aktivního činidla, 2 až
- 1010 % gelovacího činidla a 3 až 50 % rozpouštědla. Γ.Ο. Ve vodě dispergovatelný organický gelový prostředek podle nároku 8 nebo 9,vyznačující se tím, $»< že dále obsahuje hmotnostně 1 až 25 % dispergantu a 0,1 až 30 % sekundárního zahuštovadla.
- 11Ve vodě dispergovatelný organický gelový prostředek p.odle nároku 10, vyznačující se tím, že obsahuje hmotnostně 2 až 8 % dispergantu, t až 25 % sekundárního zahuštovadla a 0,1 až 10 % alespoň jednoho stabilizátoru • '·,ηΓ ' ' T-V·· ...ib'· . ’ ,·... .•-'ήί· -A? .*xj.·:-.ί''-. - - Vs·· ' · · - 23 alespoň jedné protipěnicí látky, elespoň jednoho pufru e alespoň jedné látky proti zamrzání.
- 12Ve vodě dispergovatelný organický gelový prostředek podle nároku 11,vyznačující se tím, že mé viskozitu 600 až 30000 mPa s.
- 13Ve vodě dispergovatelný organický gelový prostředek podle nároku 1G,vyznačující se tím, že má viskozitu 1000 až 12000 nPe s. 1,4. Ve vodě dispergovatelný organická gelový prostředek podle nároku 1 až 15,vyznačující se tím, že má hustotu větší než 1.
- 1415. Ve vodě dispergovatelný organický gelový prostředek podle nároku 12, vyznačujíc í se t í m , že má hustotu větší než 1,35.
- 1516. Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 až 15,vyznačující se tím, že má fázový rozdíl mezi řízenou pevností ve smyku s resultující smykovou deformací daný tg/^)/ menším nebo rovným 1,5.
- 1617. Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 až 16,vy značující se tím, že má fázový rozdíl mezi řízenou pevností ve smyku a resultující smykovou deformací daný tg/ γ /menším nebo rovným 1,2. 1.8. Ve vodě dispergovatelný organický gelový prostředek podle nároku 1 až 17, vyznačující se tím, že z má spontaneitu menší než 75.
- 1719. Ve vodě dispergovatelný organický gelový prostředek podle nároku 18,vyznačující se tím , že má spcnteneitu menší než 25.
- 1820. Systém ve vodě dispergovatelného organického gelového prostředku podle nároku 1 až 19, vyznačující se t í m , že gel je obsažen ve váčku rozpustném nebo dispergo :,’ ·?-.- ·-.'.·- .·: , · , ^¾%^^¾¾ x •jsik- x^xžá. i >~* ^7 - -x ~~ - 24 ▼atelném ve vodě.
- 1921. Systém podle nároku 20, vyznačující se t í m , že váček je vyroben ze souboru materiálů zahrnujícího, pclyethylenoxid, škrob a modifikovaný škrob, alkyleelulózu a hydroxyalkylcelulozu, karboxymethyleelulózu, polyvinyletheřy, poly/2,4-dimethyl-6-triazolylethylen/, poly/vinylsulfonovou kyselinu/, polyanhydridy, nízkomolekulární močovinoformaldehydovou pryskyřici, nízkomolekulární melaminoformaldehydovou pryskyřici, poly/2-hydroxyethylmetekrylát/, polyakrylovou;kyselinu a její homology.
- 2022. Systém podle nároku 20,vyznačující se t í m , že váček je vyroben ze souboru materiálů zahrnujícího polyethylenglykol, hydroxymethyleelulózu, hydroxyethyleelulózu, hydroxypropylcelulózu a polymethylvinylether.
- 2123. Systém podle nároku 20,vyznačující se tím, že je váček vyroben z polyethylenoxidu nebo z.methylcelulózy nebo z polyvinylalkoholu.
- 2224. Systém pódle nároku 23, vyznačující se t í m , že polyvinylalkoholem je částečně nebo plně, například. ze 40 až 10Q % alkoholyzovaný nebo hydrolyzovený polyvinylacetátový film.
- 2325· Systém podle nároku 24, vyznačující se t í m , že polyvinylalkoholem je z 80^až 99 % alkoholyzovaný nebo hydrolyzovaný polyvinylacetátový film.
Independent claims23
194 paragraphs in 5 sections, as filed
Technical field
The invention relates to a novel composition containing dangerous products which is nevertheless safe to handle and to the environment.
BACKGROUND OF THE INVENTION
Currently, most of the hazardous liquids are stored in metal drums, with smaller amounts possibly being filled into plastic containers.
Dangerous compounds, especially agrochemicals, are formulated with different compositions. Liquid formulations are generally intended for farmers as they are relatively easy to handle. However, there are some difficulties in handling such liquid compositions. There is a risk that they will spill or leak if a hole is formed in the packaging or if they fall. However safe packaging can be used which is shock-resistant under all circumstances, for example during transport, there is a risk of spillage or leakage, for example to the ground and to the ground. It is difficult to develop a device and a packaging system that has guarantees of safety in use, for example in agriculture and transport, and perfectly safe for the environment.
It is therefore an object of the present invention to provide a new formulation system containing agrochemicals that is safe for everyone and the environment. It is also an object of the present invention to provide a form of agrochemicals which can be easily introduced into containers and which can be easily handled by farmers.
It is also an object of the present invention to provide compositions and packaging systems for agrochemicals that are readily, readily and rapidly soluble and / or dispersible in water. It is also an object of the invention to provide a form of agrochemicals that is as concentrated as possible so that it requires little storage space.
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It is also an object of the present invention to provide a composition and packaging system for hazardous chemicals, such as agrochemicals, to reduce the risk of environmental pollution.
It is known that liquid agrochemicals are introduced and packaged in soluble bags and pouches made from various films. However, such films can burst, spilling agrochemicals and polluting the environment. In fact, films can have a variety of defects that cause film weaknesses and thus the risk of film rupture and disruption. Such weak points in the film may be air bubbles or particles of dust or foreign matter, or gel particles. If such a film with weaknesses is subjected to physical impacts during handling, it may fail in such weaknesses. This is a particular problem in the agrochemical industry, where filled packagings can be subjected to harsh and dangerous treatment at both distributors and farmers.
It is also an object of the invention to prevent small holes in the case of bags and pouches with agrochemicals. Small holes in the packaging are rare, but one such hole in a thousand bags is enough to cause considerable trouble as spilled liquid will pollute the environment.
An important object of the invention is to provide packaging for agrochemicals in which the risk of rupture is avoided. If the packages are rigid, there is a great danger of breaking them easily. In the case of liquids in bags and pouches, this danger is somewhat reduced, but the liquid transmits an impact so that the hydraulic hammer phenomenon applies. It is therefore an object of the invention to prevent or at least greatly reduce this phenomenon of a hydraulic hammer. Eylo has already proposed a solution to this problem by leaving the air layer in the cam, but this solution represents a loss of storage space. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a formulation for hazardous chemicals that disperses impact energy from the outside to the package as much as possible, thus to provide means that absorb shock and impact-absorbing packaging systems for agrochemicals such as pesticides, plant protection agents and growth regulators
plant.
The use of gel formulations in the pharmaceutical and cosmetics industry is known, but there is virtually no risk of contamination or environmental damage when treated with such formulations, as opposed to pesticides or agrochemicals. In addition, the gels used for pharmaceutical and cosmetic purposes are generally water-based, so in this case no effort has to be made to pack them in water-soluble pouches and absorbing external impacts.
For safety reasons, it is also possible for the agrochemicals to also be in the form of wettable powders in water-soluble pouches and pouches. However, not all agrochemicals can be used in the form of wettable powders, and although such powders are wettable, the time required to wet them (wetting time) may cause some technical problems.
As mentioned above, pesticide systems have been proposed to be environmentally safe, and in particular systems which contain liquid in soluble pouches or sachets. However, there may always be a hole in such a pouch; under such conditions the liquid contained will leak and pollute the environment. Although thixotropic liquids may be used, there is still a risk of leakage through the holes in the transport, as shocks occur during transport which cause the thixotropic liquid to become more fluid. Moreover, although the non-aqueous liquid contained in known water-soluble pouches contains a low but not zero water content, such a low water content may cause the pouch to leak when such water freezes.
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a new formulation system for agrochemicals which dissolves rapidly when introduced into water and which is not damaged by normal freezing. It is also an object of the present invention to provide a new formulation system that requires less solvent, so that manufacturing and transportation costs are saved. It is also an object of the present invention to provide a new formulation system for agrochemicals in which it is reduced
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The patent does not disclose a prophylactic agent.
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SUMMARY OF THE INVENTION
The present invention provides a continuous phase water-dispersible organic gel composition comprising a hazardous substance or organic solvent, further comprising a water-soluble or water-dispersible nonionic or anionic or cationic surfactant, or a mixture of such surfactants. the surfactant complies with the requirement, In the case of a hazardous substance in an amount of 50 g, optionally in an organic solvent and a surfactant in an amount of 5 g, up to the amount of water at 50 ° C required to bring the volume up to 100 ml, mix the mixture until a homogeneous emulsion is obtained. stand at 30 ° C for 30 minutes, the separated amount of the oily layer and hence the different phases is less than 20 ml and further comprises a gelling agent, which is either solid or liquid at 23 ° C and which is soluble at least 10% in the liquid mixture of the dangerous substance and the surfactant at a temperature above 50 ° C, wherein the gelling agent, if solid, has a particle size less than 10 micrometers and the composition as a whole contains less than 3% by weight of water.
The composition of the invention is particularly suitable as a filler of water-soluble or water-dispersible bags and pouches, wherein the organic gel is a continuous system as defined above. If the gelling agent is solid, its particles are preferably less than 20 microns. It is also preferred that the water-dispersible organic gel composition contains less than 1% water.
The water-dispersible organic gel composition according to the invention contains, in addition to the above-mentioned components, optionally also an organic solvent or solvent mixture in which or in which the active substance is perfectly soluble at a given concentration, a dispersant, a secondary thickener and other
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additives such as at least one stabilizer, at least one antifoam, at least one buffer, and at least one antifreeze agent.
Of the aforementioned gels of the invention defined above, gels of the following weight composition are particularly suitable
<td>5, c</td><td>to</td><td> 95,0</td><td> 0/</td><td>particularly</td><td> 25,«</td><td>0 to</td><td> , 80/</td><td>0% active substance,</td>
<td> 1,0</td><td>to</td><td> 50,0</td><td> &</td><td>particularly</td><td> 2,0</td><td>to</td><td> 15,0</td><td>% surfactant,</td>
<td> 0,1</td><td>to</td><td> 50,0</td><td></td><td>particularly</td><td> 2,0</td><td>to</td><td> 10,0</td><td>% of at least one gelling-</td>
<td></td><td></td><td></td><td></td><td colspan="2">reagents,</td><td></td><td></td><td></td>
<td></td><td>to</td><td> 30,0</td><td> %,</td><td>particularly</td><td> 1,0</td><td>to</td><td> 25,0</td><td>% of secondary thickener,</td>
<td> 0,0</td><td>to</td><td> 80,0</td><td> %,</td><td>particularly</td><td> 3,0</td><td>az</td><td> 50,0</td><td>% solvent and</td>
<td> 0,0</td><td>to</td><td> 20,0</td><td> %,</td><td>particularly</td><td> 0,1</td><td>to</td><td> 10,0</td><td>% of other ingredients / further defined</td>
vain.
If the gels according to the invention contain a dispersant, the amount thereof is 1.0 to 15.0%, in particular 2.0 to 8.0%.
Preferred gels according to the invention are gels containing surface; an active agent capable of forming, at a temperature above 70 ° C and / or preferably above 50 ° C, a liquid phase with the active substance (or with a dangerous substance).
According to a preferred embodiment of the invention, the compositions according to the invention have a composition such that the viscosity of the gels is 600 to 30000 mPa s and preferably 1000 to 120G0 mPa s. The Brookfield viscosity, measured by a flat plate viscosimeter at a rotational speed given by 20 rpm.
By the term continuous phase as used herein is meant a material that is homogeneous, that is, hay appears to be the only physical phase. This does not preclude the possibility that such material contains solid dispersed particles, provided that the particles are small enough not to appear as a separate phase.
It is known that the gel is generally a colloid, in which the dispersed phase is combined with a continuous phase to form a viscous, gel-like product, it is also a dispersion system which generally consists of a high molecular weight compound or an agglomerate.
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a small particle compartment in very close contact with the liquid. In the gels according to the invention, the dangerous products (or active substance) are in dissolved or dispersed form as well as in suspension. Preferably, the components of the gel are selected such that the gels of the invention have a density greater than 1. preferably, it is greater than 1.05. AND
According to a preferred embodiment of the invention, the components of the composition according to the invention are selected such that the gels contained in the pouch according to the invention have a spontaneity (hereinafter defined) of less than 75 and preferably less than 25. Spontaneity is assessed by the following: The mixture of 1 ml of gel and 99 ml of water is placed in a 150 ml glass tube, which is then stoppered and inverted. <sup>0</sup> The total number of these 9 tube reversals up to the perfect gel dispersion is referred to as 9 spontaneity. 9
By surfactant is meant an organic substance 9 which is able to substantially reduce the surface satiety of water, which is 73 dynes / cm at 20 ° C.
The surfactants which can be used according to the invention are selected from the group, but are not limited to: alkanolamides, polycondensates of ethylene oxide with fatty alcohols, M with fatty esters, or fatty amines or with substituted phenols (especially alkylphenols or arylphenols); ethoxy and propoxy block copolymers; esters ointment? | acids with polyols, for example glycerol or glycol; polysaccharides; organopolysiloxanes; sorbitan derivatives; & Gt; sucrose or glucose ethers or esters; salts of ligninsulphonic acids, salts of phenylsulphonic acids or naphthalic acids talensulfone, diphenyl sulfates; alkylarylsulfonates; sulfono- | bound fatty alcohols or amines or amides; Polycondensates? ethylene oxide with fatty acids or their sulphate or sulphonate derivatives; salts of sulfosuccinic acid or sulfosuccinamic acid esters; taurine derivatives (especially alkyltaurates); betaine derivatives; phosphoric esters of alcohols or polycondensates of ethylene oxide with phenols and sulphates, sulphonates and
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phosphates of functional derivatives of the above compounds.
By the term gelling agent is meant a material which is related to the active ingredient such that when formed at 50/50 by weight at 25 ° C, optionally grinding in an organic solvent in which the active ingredient is soluble, 3e obtains a gel. According to the invention, the gel is essentially a material having a phase difference between the controlled shear strength and the resulting shear deformation such that tg (Lf) is less than or equal to 1.5, preferably less than or equal to 1.2. Tg / γ / is tan-4. angle angle (or phase difference). The measurement is performed with a rheometer having a fixed flat plate and a rotating cone above the plate so that the angle between them is less than 10 °, preferably 4 °. The cone is rotated by a speed-controlled motor. The rotation is sinusoidal, that is, torque and angular displacement change are a sinusoidal function with time. This angular displacement corresponds to the aforementioned shear deformation. The torque of the controlled speed motor causing the angular displacement corresponds to the stated shear strength.
Gelling agents according to the invention may include those selected from the group consisting of, for example, tetramethyldecyndiol, ethoxylated dialkylphenol, methylated clay, propyl encarbate, hydrogenated castor oil, ethoxylated vegetable oil, diatomaceous earth, a mixture of dioctyl sodium sulfosuccinate and hexane dioleate and a mixture of hexanediol.
As used herein, the term hazardous chemicals refers to products that may be harmful to the environment and harmful to those working with them.
According to a preferred embodiment of the invention, the hazardous chemical is an agrochemical active substance and in particular a pesticide or plant protection agent including plant growth regulators. However, the invention is not limited to any specific agrochemicals.
fungicides such as: Triadimefon, Tebuconazole, Prochloraz,
Triforin, Tridemorph, Propiconazole, Pirimicarb, Iprodioin,
Metalasyl, Bitertanol, Iprobenphos, Plusilazole, Posetyl, Propy'66
zamid, Chlorothalonil, Lichlone, Mancozeb, Anthraquinone, Meneb, Vinclozolin, Penarimol, Bendiocarb, Captafol, Benalasyl, Thiram;
herbicides / or defoliants / for example Quizalofop and its derivatives, Acetochlor, Metalochlor, Imasapur and Imazapyr, Glyphosate and Gluphoeinat, 3utachlor, Acifluorphen, Butralin, Pluazifop-butyl, Bifenox, Bromoxynil, Ioxynil, Diflufenicaa, Pheipecaa, Phiphofenicaa, Phiphofenicaa, Phiphofenicaa, Phiphofenicaa, , MCPB, MCPP, Linuron, Isoproturon, Plaaprop and its derivatives, Ethofumesat, Diallat, Carbetamide, Alachlor, Metsulfuron, Chlor3ulfuron, Chlorpyralid,
2,4-d-tribufcs, Triclopyr, Ametryn, Chloramben, Amitrol, Asulaa, Dicamba, Bentazone, Atrazine, Cyanazine, Thiobencarb, Proraetryn, 2- (2-chlorobensyl) -4,4-dithetyl-1,2-oxazolidine- 3-one, Pluometuron, Napropamide, Parquat, Bentazole, Molinat, Propachlor, Imizaquin, Metribuzin, Tebuthiuron, Oryzalin and insecticides or nematicides such as Ebfos, Carbulfulf, Amitraz, <sup>in</sup>amidothion, Ethion, Triazophos, Propoxur, Phosalon, Permethrin, Cypermethrin, Parathion, Methylparathion., Diazinone, Metomyl, Ialthion, Lindan, Penvalerat, .Ethopropho3, Endrin, Endosulfan, Dimethoat, Dieldria, Dichloropos, Diclorophos Aldrin, Cyfluthrin, Leltamethrin, Disulfoton, Chiordimeform, Chlorpyrifos, Carbaryl, Bicofol, Thiodicarb, Propargite, Bemeton, Phosalon;
plant-plant regulators such as gibberellic acid, ethrel or ethephon, cycocel, Qhlormequat. Ethephon, Mephiquat
To determine whether the surfactant has the necessary dispersing properties and can be used as the dispersant according to the invention, the following test is carried out: An aqueous suspension (100 ml) containing kaolin or atrazine (50 g), in the form of solid particles having a diameter of 1 to 10 micrometers and the surfactant are allowed to stand at 20 ° C for 30 minutes in a graduated cylinder. Kaolin is used when the dispersant is capable of dispersing the hydrophilic solid. Atrazine is used when the dispersant is capable of dispersing a hydrophobic solid. After the aforementioned stand 9/10
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1?
Take the volume of the suspension οά of the upper level without stirring and measure the solids content (residue after evaporation of water) in the remaining tenth of the original volume. The solids content shall not exceed 12% by weight of the solids content per 100 ml of suspension to be tested,
The dispersant used according to the invention may be selected from the group, not limited to, including, but not limited to: ligninsulfonic acid salts such as calcium lignosulfonate, phenylsulfonic acid or naphthalenesulfonic acid salts, condensed naphthalenesulfonic acid; polycondensates of ethylene oxide with fatty alcohols or fatty acids or fatty esters or fatty amines or substituted phenols (especially alkylphenols or arylphenols); sulfosuccinic acid ester salts such as sodium sulfosuccinate; taurine derivatives (especially alkyltaurate); phosphoric esters of alcohols or polycondensates of ethylene oxide with phenols; esters of polyols and fatty acids or sulfuric acid or sulfonic acid or phosphoric acid; glyceryl esters, especially fatty acid esters, for example glyceryl stearate; ethylene glycols.
Secondary thickeners are compounds that increase the viscosity of a gel or liquid.
The secondary thickeners which may be used according to the invention are selected from the group comprising, by way of example and without limitation: sublimed silica, hydroxyethylcellulose, carboxymethylcellulose, organically modified attapulgite or montmorillonite clay, reinforced castor oil, cetyl or stearyl alcohol, glceryl hydroxy stearate, polyvinyl alcohol, sulfosuccinic acid ester salts such as dioctyl sodium sulfosuccinate; benzoic acid salts such as sodium benzoate and alkyl sulfates
The gels of the invention can be prepared by methods known per se. A common method is to mix the various components of the mixture / composition with each other, optionally while grinding, grinding and / or heating. Sometimes it is easier to work at slow adds
It may also be useful to add the gelling agent last.
The invention also relates to a packaging system which is a water-soluble or water-dispersible pouch containing the gel compositions mentioned above.
The chemical nature of the coating film which forms the bags or pouches containing the gel composition of the invention can be varied. Suitable materials include water-soluble and water-dispersible materials that are insoluble in organic solvents used to dissolve or disperse the agrochemically active agent. Particularly suitable materials include polyethylene oxide, for example polyethylene glycol; starch and modified starch; alkylcellulose and hydroxyalkylcellulose, for example, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose; polyvinyl ethers such as polymethyl vinyl ether or poly (2-methoxyethylene) or poly (2-ethoxyethylene); poly (2,4-dimethyl-6-triazinylethylene); poly (3-morpholinylethylene); poly (N-1,2,4-triazclylethylene); poly (vinyl sulfonic acid); polyanhydrides; low molecular weight urea-formaldehyde resin; low molecular weight melamine formaldehyde resin; poly (2-hydroxyethyl methacrylate); polyacrylic acid and homologues thereof. Preferably, the coating film is polyvinyl alcohol (PVA),
Preferred gelling bag materials of the invention are polyethylene oxide or methylcellulose or polyvinyl alcohol. If polyvinyl alcohol is used, it is preferably a polyvinyl acetate film which is 40 to 100% preferably 80 to 99% alcoholized or hydrolyzed.
The water-soluble films used to produce water-soluble bags and pouches are known per se. For the production of pouches, such a film is shaped and, if possible, at least partially joined and then filled with gel. Generally, gels are capable of flowing although they flow at a slow rate due to their high viscosity. The gel container used cannot easily be used;
<sub>;</sub>· | i ··. ·· • Ϊ1
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and
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- 11 empty due to high gel viscosity, which is why gels have not been used in agriculture yet. After filling, the pouches are finally closed, usually heat welded.
Further information regarding the invention can be found in co-pending applications: Leonard E, Hodakowski, Chi-Yu R, Chen, Samueli, Gouge, Paul J. Weber Gel Formulations for Use in Toxic or Hazardous Product Container Systems (Gel compositions for use in packaging systems for toxic and dangerous products), filed Apr. 4, 1991; David Edwards and William McCarthy Laminated Bag for Containers of Toxic or Hazardous Materials, filed April 4, 1991; Samuel T. Gouge, Leonard E. Hodakowski, Chi-Yu R, Chen and Paul J. Weber Gel Formulations for Hazardous Products, filed April 4, 1991; Leonard S, Hodakowski, Ricky W. Couch, Samuel T. Gouge, and Robert C, Ligon Gel Formulations, filed Apr. 4, 1991; Samuel T. Gouge, Spencer B, Cohen, David D Downing, Robert D, McLaughlin and James Ξ. Shue Bag In A Bag For Containerization Of Toxic Or Hazardous Material (Bag In Bag For Packaging Of Toxic And Hazardous Materials), filed 04/04/1991.
The following examples illustrate the invention but do not limit it in any way. Percentages are by weight unless otherwise indicated. The ψj ® value is always less than 1.5 and the surfactants used meet the above requirement.
DETAILED DESCRIPTION OF THE INVENTION
Example 1
Gel 3e is prepared by mixing at 50 ° C a mixture of the following composition:
64,8 phenoxybenzoic acid isooctyl ester as the active substance,
53Κ} 3? 3Η333Κ5 · Λ2®ίί ^ \ ^ ό'βί.χ ': ίύ ^ λ <οίΛγ.4Μ7ί ^ * ~.} & T ··' f ~, x <', dz » <sup>r</sup> * Z * ET ^ 'X-rUT <sup>w</sup>
- 12 24,2% of an aromatic solvent with a flash point of 65 ° C, 4,0% of a nonionic sulphonate mixed emulsifier mixed with 1,0% calcium alkylbenzene sulphonate as a surfactant,
6.0% of a mixture of dioctylsulfosuccinate salt and sodium benzoate as a gelling agent.
The mixture is stirred and shaken until all components are dissolved or dispersed. During stirring, it appears to dissolve and then gel formation occurs. Gel formation increases upon cooling to room temperature (20 °). The Brookfield gel viscosity is 3,000 mPa s. The stability of the emulsion is good, as confirmed by the above test results.
A total amount of 1100 g of gel was placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of the gel and the pouch containing the gel is 1.1. The bag is then dropped 10 times to the ground from a height of 1.2 m, without damage. The pouch is placed in a water-containing tank with gentle agitation (as achieved using a circulation pump). The pouch and its contents disperse within three minutes. There is no blockage of the 100 mesh filters.
Another pouch prepared as above was tested for puncture behavior. The 0.6 mm diameter needle is allowed to penetrate the pouch. A small droplet is observed which is formed at the point of penetration of the needle. However, this droplet is so small that it does not drip or run down the pouch.
Example 2
The procedure of Example 1 is followed except that the composition contains the following auxiliary ingredients:
5.2% nonionic sulfonate mixed emulsifier as surfactant and% tetramethyldecyndiol as gelling agent.
The Brookfield gel viscosity is 3000 mPa s. The stability of the emulsion is excellent as determined by the above-described assay.
A total amount of 1100 g of gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The bag is then dropped 10 times to the ground from a height of 1.2 m, without damage. The pouch is introduced into a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents disperse within three minutes. There is no clogging of the 100 mesh filter (mesh diameter of 107 microns).
Example 3
The procedure of Example 1 is repeated except that the mixture contains the following excipients:
21.50% nonionic sulfonated mixed emulsifier as a surfactant,
3.70% calcium alkyl benzene sulphate surfactant; and
10.0% of ethoxylated dialkyphenol as a gelling agent.
The Brookfield gel viscosity is 3000 mPa s. The emulsion stability is good as determined by the above-described assay.
The total amount of 1100 g of gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is thermally sealed. The density of both the gel and the pouch containing the gel is 1.1. The pouch is dropped 10 times to the ground from a height of 1.2 m without damaging it. The pouch is placed in a water-containing tank with gentle agitation (as achieved by a circulation pump). The pouch and its contents are dispersed within three minutes. No
<img file="CS9102217A3_D0008.tif" />
There is no clogging of the 100 mesh filter (stitch diameter 107 microns).
Example 4 x i
The gel is prepared by stirring at 50 ° C the following components: 1
18., 65% bromoxynilic acid (in the form of an octsnoate ester) and
13.85% bromoxynilic acid (as heptanoate ester) a)
27.40;% methyl chloropropionic acid / as isooctyl ester as active substance,
11,10% aromatic solvent with flash point 38 ° C, Ϊ
13.00% of a nonionic sulfonate mixed emulsifier as a surfactant ij
3.00% hydrogenated castor oil;
3.00% ethoxylated vegetable oil as a mixed gelling agent. ,
The components are mixed together using a stirrer.
. C
The product begins to gel in minutes. The Brookfield viscosity of the gel is 3150 mPa s. The stability of the emulsion is good as determined by the above-described assay. Spontaneity is 20
A total amount of 1100 g of gel was placed in a sachet containing one liter of polyvinyl alcohol film / 88% hydrolyzed polyvinyl acetate, which was soluble in cold water and had. j;
thickness of 55 micrometers. The bag, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The pouch is then closed
10 times on the ground from a height of 1.2 m, while it does not <sup>{</sup> damage. The pouch is introduced into a water-containing tank with gentle agitation as achieved by using a circulation pump.
la /. The pouch and its contents disperse within 10 minutes. There is no clogging of the 50 mesh filter (stitch diameter 215 microns).
- 15 Example 5
The procedure of Example 4 is repeated but using a mixture of the following composition:
18.40% bromoxyniloctanoate,
14,00% bromoxynilheptanoate,
36,6% methyl chloropropionic acid (as isooctyl ester) as active substance,
9.00% nonionic surfactant mixed emulsifier as surfactant,
17.00% diatomaceous earth a
2.00% of sodium sulfosuccinic acid dioctyl ester and sodium benzoate as a gelling agent,
3.00% of the sodium sulfonate of the naphthalene-formaldehyde condensate as a dispersant.
The ingredients are mixed together using a stirrer. The product acquires the appearance of a smooth paste and turns into a gel in minutes. The Brockfield gel viscosity is 9000 mPa · s. The stability of the emulsion is good as determined by the method described above. Spontaneity is 9.
A total amount of 1100 g of gel was placed in a 1 liter sachet of polyvinyl alcohol film (of cold water-soluble hydrolyzed polyvinyl acetate, 55 microns thick). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The bag is then dropped IC times n, and the ground from a height of 1.2 m without causing damage. The pouch is introduced into a tank containing cold water from gentle agitation (as achieved by using a circulation pump). The pouch and its contents disperse within 10 minutes. There is no clogging of the 50 mesh filter (stitch diameter 215 microns).
Example 6
The procedure of Example 5 is repeated, but using the following components:
Τ 2 f · · · <sup>ζ</sup> *
X ^ —ipwt - * ν »χ. «'' Κ'λ '. ί
31.50% bromoxyniloctanoate,
31.50% bromoxynilheptenoate a
44,580% atrazine as active substance,
23.25% solvent as in Example 1,
2.00% of a mixture of dioctyl sodium sulfosuccinic acid and sodium benzoate as a gelling agent,
3.60% of an ethoxy / propoxylated block copolymer with an alkylphenol; and
5.00% amine alkyarylsulfonate surfactant, 1.00% polyethylene glycol antifreeze,
0.50% polyorganopolysiloxane as antifoam.
The components are mixed together and passed through a ball mill. The product acquires a gellike appearance; after five hours the product became more viscous. The Brookfield gel viscosity is 9100 mPa s and 5200 mPa s after stirring for 4 minutes. The emulsion stability is good as determined by the above-described assay. Spontaneite is 11 ♦
A total amount of 1100 g of gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the vesicle in which the gel is 1.1. The bag is then dropped 10 times to the ground from a height of T 2 m without causing damage. The pouch is placed in a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents disperse over five moderate. There is no clogging of the 100 mesh filter (mesh diameter of 107 microns).
Example 7 '
The procedure of Example 6 was repeated, but using a mixture containing the following auxiliaries:
33., 70% bromoxyniloctenoate,
36,203% methyl chloropropionacetic acid (as isooctyl ester) as active substance
3.00% aromatic solvent, flash point 65 ° C,
<img file="CS9102217A3_D0009.tif" />
8.5% of a nonionic sulfonate mixed emulsifier and 1.00% of calcium dodecylbenzenesulfonate as a surfactant;
17.6% tetrsmethyldecyndiol as a gelling agent.
The ingredients are mixed together using a mixer. The product acquires the appearance of a smooth paste and in a few minutes turns into a gel. The Brookfield viscosity is 2200 mPa s. The emulsion stability is good as determined by the above-described assay. Spontaneity is 14.
A total amount of 1100 gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). A pouch which is almost full (about 95% by volume) is sealed by heat. The density of both the gel and the pouch containing the gel is 1.1. The bag is then dropped to the ground from a height of 1.2 m without damaging it. The pouch is placed in a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents are dispersed within five minutes. There is no clogging of the 100 mesh filter (mesh diameter of 107 microns).
Example 8
The procedure of Example 7 is repeated, but the composition is as follows: The active ingredient and the solvent are the same as those of Example 74, the amount of active ingredient being the same, but the amount of solvent is 10.60%. The mixture further contains 6.00% polylylphenol ethoxylate and calcium dodecylbenzenesulfonate in an amount of 2.0C% as a mixed surfactant and 11.50% hexane / hexyndiol as a gelling agent.
The ingredients are mixed together using a stirrer. The product starts to look like a smooth paste and in a few minutes turns into a gel. The Brookfield gel viscosity is 2500 mPa s. The emulsion stability is good as determined by the above-described assay. Handcuffed is also 5.
WWW
<img file="CS9102217A3_D0010.tif" />
A total amount of 1100 g of gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The bag is then dropped to the ground from a height of 1.2 m without damaging it. The pouch is placed in a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents are dispersed for five minutes. There is no clogging of the 100 mesh filter (mesh diameter of 107 microns).
Example 9
The procedure of Example 4 was repeated, but using a mixture having the following composition i
33.50% bromoxyniloctanoate a
33.50% bromoxynilheptanoate as active substance;
17.50% aromatic solvent with flash point 65 ° C,
4.50%. a nonionic sulfonate mixed emulsifier; and
1.00% calcium dodecylbenzenesulfonate as a surfactant,
4.25% of a mixture of dicetyl sodium sulfosanterane and sodium benzoate as a gelling agent,
0.50% tetramethyldecyndiol as antifoam.
The ingredients are mixed together at 50 ° C using a stirrer. The product starts to look like a smooth paste and in a few minutes will form a gel. The Brookfield viscosity of the gel is 4850 mPa s. The stability of the emulsion is excellent as determined by the above-described assay, the spontaneity being 10.
A total amount of 1100 g of gel is placed in a 1 liter sachet of polyvinyl alcohol film / 88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has. thickness of 55 micrometers. The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The bag is bak u-19
... and release ns ground from a height of 1.2 m 10 times, without damage. The pouch is placed in a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents disperse within three minutes. There is no clogging of the 100 mesh filter (mesh diameter of 107 microns).
Example 10
The gel is prepared by stirring at 50 ° C a mixture of the following composition:
30.15% bromoxynilic acid (as the octanoate ester) a
31.15% bromoxynilic acid / as heptenoate ester, as active substance,
22,85% aromatic solvent with a flash point of 38 ° C,
6,00% polarylphenol ethoxylate and
2.00% calcium alkyl benzene sulfonate as a surfactant,
6.00% clay modified by the addition of methyl groups and 2.00% propylene carbonate as a mixture of gelling agents.
The components are mixed together using a stirrer. The product starts to gel in minutes. The Brookfield gel viscosity is 4200 mPa s. The stability of the emulsion is good, as determined by the above-described assay, the sponteneity being 38.
The total amount of 1100 gel is placed in a 1 liter sachet of polyvinyl alcohol film (88% hydrolyzed polyvinyl acetate, which is soluble in cold water and has a thickness of 55 microns). The pouch, which is almost full (approximately 95% by volume), is heat sealed. The density of both the gel and the pouch containing the gel is 1.1. The bag is then dropped 10 times to the ground from a height of 1.2 m, without damage. The pouch is placed in a water-containing tank with gentle agitation (as achieved by using a circulation pump). The pouch and its contents are dispersed within ten minutes. There is no clogging of the 50 mesh / gffizmswfft filter,
7.V ~> V '- i
- 20 stitches 21 5; micrometers.
Industrial applicability
Gel preparation containing hazardous and toxic chemicals ε suitable for filling dc ages ε of bags readily soluble or dispersible in water. The composition is particularly suitable for the formulation of sgrochemicals.
Contents5
534 members in 45 offices
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 55461590 | United States of America | A | |
| 68030891 | United States of America | A |
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Numbers
- Application
- 221791
Titles
- English
- WATER DISPERSIBLE ORGANIC GEL AGENT AND A SYSTEM COMPRISING THEREOF
Classification
- CPC, 11
- A01N25/34
- A01N43/70
- A01N25/04
- A01N37/40
- A01N39/04
- B65B9/042
- B65B29/10
- B65D65/46
- C05G5/40
- C05G5/45
- Y02W90/10
- IPC, 15
- A01C15 00
- A01N25 04
- A01N25 34
- A01N37 40
- A01N39 04
- A01N43 70
- A01P3 00
- A01P5 00
- A01P7 00
- A01P13 00
- A01P21 00
- B65B9 04
- B65B29 10
- B65D65 46
- C05G3 00