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    • 专利摘要:
    SOLUBLE UNIT DOSE ARTICLES THAT UNDERSTAND A CATIONIC POLYMER. The present invention addresses the need for a stable unit dose article that dissolves quickly and offers good tissue treatment benefit, which is satisfied by combining a cationic polymer with a fatty acid or salt in a non-aqueous composition, which it is comprised of a water-soluble or dispersible film. By combining the cationic polymer with the fatty acid, the cationic polymer is prevented from reducing the solubility of the encapsulation film.
    公开号:BR112012032888B1
    申请号:R112012032888-3
    申请日:2011-06-23
    公开日:2020-10-20
    发明作者:Regine Labeque；Peter Jos Emma Van Ginderen；Marc Jennewein
    申请人:The Procter & Gamble Company；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to stable and soluble unit dose articles that provide a good tissue treatment benefit. BACKGROUND OF THE INVENTION
    [002] Today's consumers want an easy-to-use optimized fabric treatment product, providing benefits such as: optimized softness, less folds in the fabric, less mechanical damage during washing, less color fading and less small beads / fluff. Cationic polymers are known in the art for providing improved tissue treatment. Therefore, there is a strong desire to add such polymers to liquid unit dose articles that are quick to dissolve and readily dispersed in the solution. However, it has recently been discovered that the addition of such cationic polymers to liquid unit dose articles leads to low solubility, since cationic polymers can be combined with the soluble or dispersible film in anionically charged water.
    [003] Consequently, there remains a need to find a way to incorporate such cationic polymers into liquid unit dose articles, without interfering with the solubility of the surrounding film. SUMMARY OF THE INVENTION
    [004] According to the present invention, a unit dose article containing a non-aqueous liquid composition is provided which comprises: a cationic polymer, and a fatty acid or salt; the non-aqueous liquid composition being enclosed in a water-soluble or dispersible film. The present invention also provides a process for preparing a unit dose article comprising the steps of: pre-mixing the cationic polymer with the fatty acid or salt to form a cationic polymer / fatty acid premix; combining the cationic polymer / fatty acid or salt premix with a non-aqueous liquid feed to form the non-aqueous liquid composition; and encapsulating the non-aqueous liquid composition in a water-soluble or dispersible film. DETAILED DESCRIPTION OF THE INVENTION
    [005] The present invention relates to the use of cationic polymers to increase the benefits of tissue treatment. In particular, how to provide such benefits, including optimized softness, in an easy-to-use unit dose form. The unit-dose articles of the present invention comprise: a cationic polymer and a fatty acid or salt in a non-aqueous composition, encapsulated by a water-soluble or dispersible film. It has been surprisingly found that fatty acids and salts can prevent the cationic polymer from complexing with the water-soluble or dispersible film and, consequently, prevent the cationic polymer from reducing the film's solubility. It is believed that the cationic polymer preferably complexes with the fatty acid or salt and, therefore, is unable to bond with the film.
    [006] All percentages, ratios and proportions used in the present invention are expressed as weight percent of the encapsulated portion of the unit dose article (including that of multiple compartments, where appropriate), unless otherwise specified. That is, excluding the weight of the encapsulation material. Unit dose articles:
    [007] The non-aqueous liquid composition comprising the cationic polymer and the fatty acid or salt is contained in a unit dose article, which comprises at least one compartment filled with liquid. A liquid-filled compartment refers to a partition of the unit dose article which comprises a liquid capable of moistening a fabric, for example, clothing. Such unit-dose articles comprise, in a single, easy-to-use dosage form: a cationic cellulose polymer and a cellulase enzyme, comprised in a non-aqueous composition, encapsulated in a water-soluble or dispersible film.
    [008] The unit dose article can be of any shape, shape and material that is suitable to contain the non-aqueous composition, that is, without allowing the release of the non-aqueous composition, and any additional component, from the unit dose article prior to contact of the unit dose article with water. The exact execution will depend, for example, on the type and quantity of the compositions in the unit dose article, the number of compartments in the unit dose article, and the necessary characteristics of the unit dose article to contain, protect and supply or release the compositions or components.
    [009] The unit dose article comprises a water-soluble or dispersible film that completely involves at least one internal volume, comprising the non-aqueous composition. The unit dose article may optionally comprise additional compartments comprising non-aqueous liquid and / or solid components. Alternatively, any additional solid components can be suspended in a liquid-filled compartment. A multi-compartment unit dose form may be desirable for reasons such as: chemically separating incompatible ingredients; or where it is desirable for a portion of the ingredients to be released in the wash sooner or later.
    [0010] It may be preferable that any compartment that comprises a liquid component also includes an air bubble. The air bubble can have a volume less than 50%, preferably less than 40%, more preferably less than 30%, more preferably less than 20%, with the maximum preference less than 10% of the volume space of said compartment. Without adhering to the theory, it is believed that the presence of the air bubble increases the tolerance of the unit dose article to the movement of the liquid component inside the compartment, thereby reducing the risk of the liquid component leaking from the compartment.
    [0011] Water-soluble or dispersible film: The water-soluble or dispersible film typically has, preferably, a solubility of at least 50%, preferably at least 75%, more preferably, at least 95%. The method for assessing the water solubility of the film is provided in the Test Methods. The water-soluble or dispersible film typically has a dissolution time of less than 100 seconds, preferably less than 85 seconds, more preferably less than 75 seconds, most preferably less than 60 seconds. The method for determining the dissolution time of the film is provided in the Test Methods.
    [0012] Preferred films are polymeric materials, preferably polymers that are formed into a film or sheet. The film can be obtained by casting, blow molding, extrusion or blow extrusion of the polymeric material, as known in the art. Preferably, the water-soluble or dispersible film comprises: polymers, copolymers or derivatives of these substances, including polyvinyl alcohols (PVA), polyvinyl pyrrolidone, polyalkylene oxides, acrylamide, acrylic acid, cellulose, cellulose ethers, cellulose esters , cellulose amides, polyvinyl acetates, polycarboxylic acids and salts, polyamino acids or peptides, polyamides, polyacrylamide, maleic / acrylic acid copolymers, polysaccharides including starch and gelatin, natural gums such as xanthan and carrageenan and mixtures thereof. More preferably, the water-soluble or dispersible film comprises: polyacrylates, water-soluble acrylate copolymers, methylcellulose, carboxymethylcellulose, dextrin, ethylcellulose, hydroxyethylcellulose, hydroxypropyl methylcellulose, maltodextrin, polymethacrylates, and mixtures thereof. With the utmost preference, the water-soluble or dispersible film comprises: polyvinyl alcohols, polyvinyl alcohol copolymers, hydroxypropyl methyl cellulose (HPMC), and mixtures thereof. Preferably, the content of polymers or copolymer in the film is at least 60% by weight. The polymer or copolymer preferably has a weight average molecular weight of 1,000 to 1,000,000, more preferably 10,000 to 300,000, and most preferably 15,000 to 200,000, and most preferably 20,000 to 150,000.
    [0013] Copolymers and polymer mixtures can also be used. This can, in particular, be beneficial for controlling the mechanical and / or dissolving properties of the compartments or the unit dose article, depending on its application and the required requirements. For example, it may be preferable that a mixture of polymers is present in the film, in which a polymeric material has a higher solubility in water than another polymeric material, and / or a polymeric material has a higher mechanical strength than another polymeric material . The use of copolymers and polymer mixtures can have other benefits, including enhanced long-term resilience of water-soluble or dispersible film to detergent ingredients. For example, US 6,787,512 features polyvinyl alcohol copolymer films that comprise a hydrolyzed vinyl acetate copolymer and a second sulfonic acid monomer, for enhanced resilience against detergent ingredients. An example of such a film is commercially available from Monosol of Merrillville, Indiana, USA, under the trade name: M8900. It may be preferable to use a mixture of polymers, with different weight average molecular weights, for example, a mixture of polyvinyl alcohol or a copolymer thereof, with a weight average molecular weight of 10,000 to 40,000, and of another polyvinyl alcohol or copolymer , with a weight average molecular weight of 100,000 to 300,000.
    [0014] Also useful are compositions of polymer mixtures, for example, containing mixtures of hydrolytically degradable and water-soluble polymers, such as polylactide and polyvinyl alcohol, obtained by mixing polylactide and polyvinyl alcohol containing, typically, from 1 to 35% , by weight of polylactide and from 65% to 99%, by weight of polyvinyl alcohol. The polymer present in the film can be hydrolyzed from 60% to 98%, more preferably from 80% to 90%, to optimize the dissolution / dispersion of the film material.
    [0015] The water-soluble or dispersible film of the present invention can comprise additive ingredients in addition to the polymer or copolymer material. For example, it may be beneficial to add: plasticizers such as glycerol, ethylene glycol, diethylene glycol, propylene glycol, sorbitol, and mixtures thereof; additional water; and / or disintegration aids.
    [0016] Other suitable examples of commercially available water-soluble films include polyvinyl alcohol and partially hydrolyzed polyvinyl acetate, alginates, cellulose ethers such as carboxymethylcellulose and methylcellulose, polyethylene oxide, polyacrylates and combinations of such items. Most preferred are films with properties similar to polyvinyl alcohol that comprise the film known under the trademark M8630, sold by Monosol of Merrillville, Indiana, USA. Non-aqueous liquid compositions:
    [0017] For use in the present invention, "non-aqueous liquid composition" refers to any liquid composition comprising less than 20%, preferably less than 15%, more preferably less than 12%, most preferably less than 8% by weight of water. For example, free of additional water in addition to what is carried away with other constituent ingredients. The term liquid also includes viscous forms, such as gels and pastes. The non-aqueous liquid may include other solids or gases in an appropriately subdivided form, but excludes forms that are not generally liquid, such as tablets or granules.
    [0018] The non-aqueous composition of the present invention can also comprise from 2% to 40%, more preferably from 5% to 25%, by weight of a non-aqueous solvent. For use in the present invention, "non-aqueous solvent" refers to any organic solvent that does not contain amino-functional groups. Preferred non-aqueous solvents include monohydric, dihydric and polyhydric alcohols, glycol, glycols, including polyalkylene glycols such as polyethylene glycol, and mixtures of these items. The most preferred non-aqueous solvents include monohydric, dihydric and polyhydric alcohols, glycerol and mixtures of these items. Mixtures of solvents are highly preferable, specifically mixtures of two or more of the following: lower aliphatic alcohols such as ethanol, propanol, butanol, isopropanol; diols such as 1,2-propanediol or 1,3-propanediol; and glycerol. Also preferred are propanediol and mixtures of the same with diethylene glycol, where the mixture does not contain methanol or ethanol. Accordingly, the modalities of the non-aqueous compositions of the present invention can include modalities in which propanodiols are used, but methanol and ethanol are not used.
    [0019] Preferred non-aqueous solvents are liquids under ambient temperature and pressure (ie, 21 ° C and 0.1 MPa (1 atmosphere)), and comprise carbon, hydrogen and oxygen. Non-aqueous solvents can be present when preparing a premixture, or in the final non-aqueous composition. Cationic polymer:
    The unit dose articles of the present invention may comprise from 0.01% to 20%, preferably from 0.1% to 15%, more preferably from 0.6% to 10%, by weight, of the polymer of cationic cellulose. The cationic polymer preferably has a cationic charge density of 0.005 to 23, more preferably 0.01 to 12, most preferably 0.1 to 7 milliequivalents / g, at the pH of the non-aqueous liquid composition. The charge density is calculated by dividing the number of net charges per repeating unit by the molecular weight of the repeating unit. Positive charges can be located in the main polymer chain and / or in the polymer side chains.
    [0021] The term "cationic polymer" also includes amphoteric polymers that have a liquid cationic charge at the pH of the non-aqueous liquid composition. Some non-limiting examples of suitable cationic polymers are polysaccharides, proteins and synthetic polymers. Cationic polysaccharides include cationic cellulose derivatives, cationic guar gum derivatives, chitosan and their derivatives and cationic starches. Suitable cationic polysaccharides include cationically modified cellulose, particularly cationic hydroxyethylcellulose and cationic hydroxypropylcellulose. Preferred cationic celluloses for use in the present invention include those that may or may not be hydrophobically modified, including those that have hydrophobic substituting groups, with a molecular weight of 50,000 to 2,000,000, more preferably from 100,000 to 1,000,000 and with the maximum preference of 200,000 to 800,000. These cationic materials have substituted anhydroglycosis repeat units that correspond to the general structural formula I, as shown below:
    Structural formula I where: a. m is an integer from 20 to 10,000 b. Each R4 is H, and R1, R2, R3 are each independently selected from the group consisting of: H; C1-C32 alkyl; C1- C32 substituted alkyl, C5-C32 or C6-C32 aryl, C5-C32 or C6-C32 substituted aryl or C6-C32 alkylaryl, or substituted C6-C32 alkylaryl, and
    Preferably, R1, R2, R3 are each independently selected from the group consisting of: H; and C1-C4 alkyl; where: n is an integer selected from 0 to 10 and Rx is selected from the group consisting of: Rs;
    in which at least one Rx in said polysaccharide has a structure selected from the group consisting of:
    where A- is a suitable anion. Preferably, A- is selected from the group consisting of: Cl, Rb, h, methyl sulfate, ethyl sulfate, toluene sulfonate, carboxylate and phosphate; Z is selected from the group consisting of carboxylate, phosphate, phosphonate and sulfate. q is an integer selected from 1 to 4; each Rs is independently selected from the group consisting of: H; C 1 -C 32 alkyl; C1-C32 substituted alkyl, C5-C32 or C6-C32 aryl, C5-C32 or C6-C32 substituted aryl, C6-C32 alkylaryl, C6-C32 alkylaryl substituted, and OH. Preferably, each Rs is selected from the group consisting of: H, C1-C32 alkyl, and substituted C1-C32 alkyl- More preferably, Rs is selected from the group consisting of H, methyl and ethyl. Each Re is independently selected from the group consisting of: H, C1-C32 alkyl, C1-C32 substituted alkyl, Cs-C32 or Ce C32 aryl, C5-C32 or C6-C32 substituted aryl, C6-C32 alkyl aryl, and C6 -C32 alkyl substituted aryl. Preferably, each Re is selected from the group consisting of: H, C1-C32 alkyl, θ C1-C32 substituted alkyl. Each T is independently selected from the group: H,
    where each v in said polysaccharide is an integer from 1 to 10. Preferably, v is an integer from 1 to 5. The sum of all indices v in each Rx in said polysaccharide is an integer from 1 to 30 , more preferably from 1 to 20, most preferably from 1 to 10. Finally

    group in a chain, T is always an H.
    [0022] The substitution of alkyl in the anhydroglycosis rings of the polymer can be in the range of 0.01% to 5% per unit of glucose; more preferably from 0.05% to 2% per unit of glucose, of the polymeric material.
    [0023] The cationic cellulose can be slightly cross-linked with a dialdehyde, such as glyoxyl, to avoid the formation of masses, nodules or other agglomerations when added to water at room temperature.
    [0024] Likewise, cationic cellulose ethers of Structural Formula I, include those that are commercially available and also include materials that can be prepared by conventional chemical modification of commercially available materials. Cellulose ethers of type I structural formula available for sale include those with the INCI name of polyquaternium 10, such as those sold under the trade names: UCare polymer JR 30M, JR 400, JR 125, LR 400 and LK 400 polymers; polyquaternium 67, such as those sold under the trade name Softcat SK ™, all of which are marketed by Amerchol Corporation, of Edgewater, NJ, USA, and polyquaternium 4, such as those sold under the trade name: Celquat H200 and Celquat L- 200, available from the National Starch and Chemical Company, Bridgewater, NJ. Other suitable polysaccharides include hydroxyethyl cellulose or hydroxypropyl cellulose quaternized with C12-C22 glycidyl alkyl dimethyl ammonium chloride. Examples of such polysaccharides include polymers with the INCI names polyquaternium 24 as those sold under the trade name Quaternium LM 200 by Amerchol Corporation, Edgewater, NJ, USA. The cationic starches described by D. B. Solarek in Modified Starches, Properties and Uses, published by CRC Press (1986) and in US patent No. 7,135,451, col. 2, line 33 - col. 4, line 67. Suitable cationic galactomannans include cationic guar gums or cationic carob gum. An example of a cationic guar gum is a quaternary ammonium derivative of hydroxypropyl guar gum, such as those sold under the trade name: Jaguar C13 and Jaguar Excel available from Rhodia, Inc. of Cranbury, NJ, USA and N-Hance from Aquaion, Wilmington, DE, USA.
    [0025] A synthetic cationic polymer can also be useful as the cationic polymer. Synthetic polymers include synthetic addition polymers of general structure:
    Structural formula II in which each R1 can be independently: hydrogen, C1-1C2 alkyl, substituted or unsubstituted phenyl, substituted or unsubstituted benzyl, -ORa, or -C (O) ORa where Ra can be selected from the group consisting of : hydrogen, C1-C24 alkyl, and combinations thereof. R1 is preferably: hydrogen, C1-C4 alkyl, or -ORa, or - C (O) ORa; each R2 being independently selected from the group consisting of: hydrogen, hydroxyl, halogen, C1-C12 alkyl, -ORa, substituted or unsubstituted phenyl, substituted or unsubstituted benzyl, carbocyclic, heterocyclic, and combinations thereof. R2 is preferably selected from the group consisting of: hydrogen, C1-C4 alkyl, and combinations thereof. Each Z can be independently: hydrogen, halogen; a straight or branched C1-C30 alkyl, a nitrile, N (Rs) 2 -C (O) N (R3) 2, -NHCHO (formamide), -OR3, -O (CH2) nN (R3) 2, -O (CH2) ΠN + (R3) 3X - -C (O) OR4; -C (O) N- (R3) 2; -C (O) O (CH2) nN (R3) 2, -C (O) O (CH2) nN + (R3) 3X -, - OCO (CH2) ΠN (R3) 2, -OCO (CH2) ΠN + (R3 ) 3X -C (O) NH- (CH2) nN (R3) 2, -C (O) NH (CH2) nN + (R3) 3X - (CH2) nN (R3) 2> - (CH2) nN + (R3) 3X-. Each R3 can be independently selected from the group consisting of: hydrogen, C1-C24 alkyl, C2-C8 hydroxyalkyl, benzyl, substituted benzyl, and combinations thereof; Each R4 can be independently selected from the group consisting of: hydrogen, C1-24 alkyl,
    and combinations thereof. X can be a water-soluble anion, n can be from 1 to 6. R5 can be independently selected from the group consisting of: hydrogen, Ci-Ce alkyl, and combinations thereof. Z, of structural formula II, can also be selected from the group consisting of: non-aromatic nitrogen heterocycles containing a quaternary ammonium ion, heterocycles containing an N-oxide portion, heterocycles containing aromatic nitrogen, one or more of the nitrogen atoms they can be quaternized; heterocycles containing aromatic nitrogen, at least one nitrogen can be an N-oxide, and combinations thereof. Some non-limiting examples of addition polymerization monomers comprising a heterocyclic Z unit include 1-vinyl-2-pyrrolidinone, 1-vinyl imidazole, quaternized vinyl imidazole, 2-vinyl-1,3-dioxolane, 4-vinyl-1 -cyclohexene 1,2-epoxide, and 2-vinyl pyridine, 2-vinyl pyridine N-oxide, 4-vinyl pyridine, 4-vinyl pyridine N-oxide.
    [0026] A non-limiting example of a Z unit that can be made to form a cationic charge locally, may be the unit - NHCHO, formamide. The formulator can prepare a polymer, or copolymer comprising formamide units, which are subsequently hydrolyzed to form vinyl amine equivalents.
    [0027] Polymers or copolymers may also contain one or more cyclic polymer units derived from cyclic polymerization monomers. An example of a cyclic polymerization monomer is dimethyl diallyl ammonium having the following formula:

    [0028] Suitable copolymers can be produced from one or more cationic monomers selected from the group consisting of N, N-dialkylaminoalkyl methacrylate, N, N-dialkylaminoalkyl acrylate, N, N-dialkylaminoalkyl acrylate, N, N -dialkylaminoalkyl methacrylamide, N, N-dialkylaminoalkyl quaternized methacrylate, N acrylate, quaternized N, N-dialkylaminoalkyl, quaternized N, N-dialkylaminoalkyl quaternized, N, N-dialkylamine and quaternized alkylated alkylamine and its quaternized and quaternized alkylated alkylamines its derivatives, imidazole vinyl, quaternized vinyl imidazole and dialkyl ammonium chloride and combinations thereof, and optionally a second monomer selected from the group consisting of acrylamide, N, N-dialkyl acrylamide, methacrylamide, N, N-dialkylmethacrylamide, alkyl acrylate C1-C12, C1-C12 hydroxyalkyl acrylate, polyalkylene glycol acrylate, C1-C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, methacrylate polyalkylene glycol, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl pyridine, vinyl pyrrolidone, vinyl imidazole and derivatives, acrylic acid, methacrylic acid, maleic acid, vinyl sulfonic acid, styrene sulfonic acid, acrylamide propyl methanesulfonic acid (AMPS) and its salts, and combinations thereof. The polymer can optionally be cross-linked. Suitable crosslinking monomers include ethylene glycol diacrylate, divinyl benzene, butadiene.
    [0029] In certain embodiments, synthetic polymers are: polyl (acrylamide-co-chloride of diallyldimethylammonium), poly (acrylamide-ammonium chloride methacrylamidopropyltrimethyl), poly (acrylamide-co-N, N-dimethyl methacrylate) , N (N-N-dimethyl aminoethyl acrylamide-co-methacrylate), dimethyl amino ethyl hydroxyethyl acrylate-co-methacrylate), dimethyl aminoethyl poly (hydroxypropylacrylate-co-methacrylate), poly (hydroxypropylacrylate-co) -methacryl-starch-propyl-trimethyl-ammonium chloride), poly (diallyldimethylammonium-co-acrylic acid acrylamide-co-chloride), poly (acrylamide-ammonium chloride methacrylamidopropyl-trimethyl-co-acrylic acid). Examples of other suitable synthetic polymers are polyquaternium-1, polyquaternium-5, polyquaternium-6, polyquaternium- , polyquaternium-8, polyquaternium-11, polyquaternium-14, polyquaternium-22, polyquaternium-28, polyquaternium-28, polyquaternium -32 and po-liquatérnio-33. Other cationic polymers include polyethyleneamine and its derivatives, and amine-epichlorohydrin polyamide (PAE) resins. In one aspect, the polyethylene derivative may be an amide derivative of polyethylene imine sold under the trade name Lupasol SK. Also included are alkoxylated polyethyleneimine; alkyl imine polyethylene and quaternized polyethylene imine. These polymers are described in "Wet Strength resins and their applications" edited by L. L. Chan, TAPPI Press (1994). The weight average molecular weight of the polymer will generally be about 10,000 to about 5,000,000, or about 100,000 to about 200,000, or about 200,000 to about 1,500,000 daltons, as determined by exclusion chromatography. size compared to polyethylene oxide standards with IR detection. The mobile phase used is a solution of 20% methanol in 0.4M MEA, 0.1M NaNOs, 3% acetic acid in a Waters Linear Ultrahydrogel column, 2 in series. The columns and detectors are maintained at 40 ° C. The flow is adjusted to 0.5 mL / min.
    [0030] To further reduce any interaction between the cationic polymer and the water-soluble or dispersible film, the non-aqueous liquid composition can comprise the cationic polymer, present in a particulate form. That is, the cationic polymer is insoluble in the non-aqueous liquid composition, or does not fully dissolve in the non-aqueous liquid composition. Suitable particulate forms include solids that are completely free of water and / or another solvent, but also include solids that are partially hydrated and / or solvated. Partially hydrated or solvated particles are those that comprise water and / or another solvent in levels that are insufficient to make the particles fully solubilize. A benefit of partially hydrating and / or solvating the cationic polymer is that if any agglomerates form, they have low cake strength and are easy to redispersate. Such hydrated or solvated particles in general comprise from 0.5% to 50%, preferably 1% to 20% water or solvent. While water is preferable, any solvent that is capable of partially solvating the cationic polymer can be used. The cationic polymer particles are preferably as small as possible. Suitable particles have an average D90 area of diameter less than 300 microns, preferably less than 200 microns, more preferably less than 150 microns. The average area D90 in diameter is defined as 90% of the particles that have an area smaller than the area of a circle that has the diameter D90. The method for measuring particle size is provided in the Test Methods. Fatty acids:
    [0031] In addition to the cationic polymer, the non-aqueous composition of the unit dose article may comprise from 0.2% to 40%, preferably from 0.5% to 30%, more preferably from 1% to 20% % by weight of a fatty acid or its salt. Suitable fatty acids and salts include those that have the formulation: R1COOM
    [0032] where R1 is a primary or secondary alkyl group of 4 to 30 carbon atoms and M is a hydrogen cation or other solubilizing cation. While acid (where M is a hydrogen cation) is suitable, salt is preferred, as it has a greater affinity for the cationic polymer. Therefore, the fatty acid or salt is preferably selected so that the pKa of the fatty acid or salt is less than the pH of the non-aqueous liquid composition. For that reason, the non-aqueous composition preferably has a pH of 6 to 10.5, more preferably 6.5 to 9, most preferably 7 to 8.
    [0033] The alkyl group represented by R1 can represent a mixture of chain lengths and can be saturated or unsaturated, although it is preferred that at least two thirds of the R1 groups have a chain length of between 8 and 18 carbon atoms. Some non-limiting examples of suitable alkyl group sources include fatty acids derived from coconut oil, tallow, pine oil and palm kernel oil. In order to minimize odor, however, it is often desirable to use primarily saturated carboxylic acids. The solubilizing cation, M, can be any cation that gives the product water solubility, although monovalent portions are, in general, preferred. Examples of acceptable solubilizing cations for use with this invention include alkali metals, such as sodium and potassium, which are particularly preferred, and amines such as triethanolammonium, ammonium and morpholine. Although, when used, most of the fatty acid should be incorporated into the non-aqueous composition in the form of neutralized salt, it is often preferable to leave an amount of free fatty acid in the composition, as this can assist in maintaining the viscosity of the composition not watery.
    [0034] The ability of the fatty acid or salt to prevent the cationic polymer from complexing with the water-soluble or dispersible film depends on the fatty acid content. When little or no fatty acid is present, the cationic polymer is fully capable of complementing itself with the water-soluble or dispersible film. Such films have low solubility, leading to unwanted film residues on the fabric after washing. When the non-aqueous liquid composition comprises high levels of fatty acid, the film dissolves very readily; and may even begin to dissolve after coming into contact with wet hands or surfaces.
    [0035] Therefore, by adjusting the fatty acid content, the solubility of the film can be adjusted. For example, to balance how readily the encapsulation film dissolves, with the susceptibility to leakage due to contact with wet hands and surfaces. In addition, by such means, a wider range of films can be used for unit dose articles of the present invention, including lower cost and more soluble films. Such films would normally be unacceptable, since they are prone to leakage and dirty residue, in contact with wet hands and surfaces. However, since the solubility of the film, for the cationic polymer comprising unit dose articles, can be adjusted with the use of the fatty acid content, the problem of leakage and dirt due to contact with wet hands and surfaces can be eliminated. . Auxiliary compounds for washing clothes:
    [0036] The unit dose articles of the present invention may include conventional washing detergent ingredients selected from the group consisting of: anionic and non-ionic surfactants, additional surfactants, enzymes, enzyme stabilizers, alkoxylated amphiphilic fat cleaning polymers , clay dirt cleaning polymers, dirt release polymers, dirt suspension polymers, bleaching systems, optical bleaches, toning dyes, particulate matter, perfume and other odor control agents, hydrotropes, foam suppressants, agents benefits of tissue treatment, pH adjusting agents, dye transfer inhibiting agents, preservatives, non-adherent dyes, and mixtures thereof. Some of the optional ingredients that can be used are described, in more detail, as follows:
    [0037] Anionic and non-ionic surfactants: The unit dose articles of the present invention can comprise from 1% to 70%, preferably from 10% to 50% and, more preferably from 15% to 45%, by weight, of an anionic and / or non-ionic surfactant.
    [0038] The unit dose articles of the present invention preferably comprise from 1 to 70%, more preferably from 5 to 50%, by weight, of one or more anionic surfactants. Preferred anionic surfactants are selected from the group consisting of: C11-C18 alkyl benzene sulfonates, C10-C20 random and branched chain alkyl sulfates, C10-C18 alkyl ethoxy sulfates, branched medium chain alkyl sulfates, alkoxy alkyl sulfates medium-branched chain, C10-C18 alkylalkoxy carboxylates comprising 1 to 5 ethoxy units, modified benzene sulfonate, C12-C20 methyl ester sulfonate, C10-C18 alpha-olefin sulfonate, C6-C20 sulfosuccinates, and mixtures of themselves. However, by nature, each anionic surfactant known in the detergent composition technique can be used, such as those featured in "Surfactant Science Series", Volume 7, edited by W. M. Linfield, Marcel Dekker. However, the unit dose articles of the present invention preferably comprise at least one sulfonic acid surfactant, such as a linear alkyl benzene sulfonic acid, or water-soluble salt forms.
    [0039] Anionic sulfonate or sulfonic acid surfactants for use in the present invention include the acid and salt forms of C5-C20 linear or branched, most preferably C10-C16, most preferably C11-C13 alkylbenzene sulfonates, C5-C20 sulfonates of alkyl ester, C6-C22 primary or secondary alkane sulfonates, C5-C20 sulfonated polycarboxylic acids, and mixtures thereof. The aforementioned surfactants can vary widely in their 2-phenyl isomer content. Anionic sulfate salts for use in compositions of the invention include: primary and secondary alkyl sulfates, with a portion of straight or branched alkenyl or alkyl having 9 to 22 carbon atoms, more preferably 12 to 18 carbon atoms; beta-branched alkyl sulfate surfactants; and mixtures thereof. The alkyl sulphates or sulphonates with branched middle chain are also anionic surfactants suitable for use in the compositions of the present invention. Primary C5-C22 sulfates, preferably C10-C20 alkyl with medium branched chain are preferred. When mixtures are used, a suitable average total number of carbon atoms for the alkyl moieties is preferably in the range of 14.5 to 17.5. The preferred monomethyl branched primary alkyl sulfates are selected from the group consisting of the 3-methyl to 13-methyl pentadecanol sulfates and the corresponding hexadecanol sulfates, as well as mixtures of these substances. Derivatives of dimethyl or other biodegradable alkyl sulfates with light branching can likewise be used. Other anionic surfactants suitable for use in the present invention include fatty methyl ester sulfonates and / or alkyl ethoxy sulfates (AES) and / or polyalkoxylated alkyl carboxylates (AEC). Mixtures of anionic surfactants can be used, for example, mixtures of alkyl benzene sulfonate and AES.
    [0040] Anionic surfactants are typically present in the form of their salts, with alkanol amines or alkali metals such as sodium and potassium. Preferably, the anionic surfactants are neutralized with alkanolamines, such as monoethanolamine or triethanolamine, and are completely soluble in the non-aqueous liquid composition.
    [0041] The unit dose articles of the present invention may include from 1 to 70%, preferably from 5 to 50%, by weight, of a non-ionic surfactant. Suitable non-ionic surfactants include, but are not limited to, C12-C18 alkyl ethoxylates ("AE") including so-called narrow etched alkyl ethoxylates and C6-C12 alkyl phenol alkoxylates (specifically ethoxylates and ethoxylates / propoxylates) blended), C6-C12 alkylene oxide block condensates, C8-C22 alkylene oxide condensates and ethylene oxide / propylene oxide block polymers (Pluronic®-BASF Corp.), as well as semi-polar non-ionic (eg amine oxides and phosphine oxides). An extensive description of suitable nonionic surfactants can be found in U.S. Patent 3,929,678.
    [0042] Alkyl polysaccharides, as disclosed in US Patent 4,565,647, are also useful as non-ionic surfactants for compositions of the invention. Also suitable are alkyl polyglucoside surfactants. In some embodiments, suitable non-ionic surfactants include those with the formula R1 (OC2H4) nOH, where R1 is a C10-C16 alkyl group or a C8-C12 alkyl phenyl group, and n is 3 to 80. In some embodiments, the Nonionic surfactants can be products of the condensation of C12-C15 alcohols with from 5 to 20 moles of ethylene oxide per mole and alcohol, for example, C12-C13 alcohol condensed with 6.5 moles of ethylene oxide per mole of alcohol. Additional suitable nonionic surfactants include polyhydroxy fatty acid amides with the following formula:
    where R is a C9-C17 alkyl or alkenyl, R1 is a methyl group and Z is glycidyl derived from a reduced sugar or alkoxylated derivative thereof. Some examples are N-methyl N-1-deoxyglucityl cocoamide and N-methyl N-1-deoxyglucityl oleamide.
    [0043] Additional surfactants: The unit dose articles of the present invention may comprise an additional surfactant selected from the group consisting of: anionic, cationic, non-ionic, amphoteric and / or zwiterionic surfactants and mixtures thereof.
    [0044] Suitable cationic surfactants can be soluble in water, dispersible in water or insoluble in water. These cationic surfactants have at least one quaternized nitrogen and at least one long-chain hydrocarbyl group. Also included are compounds containing two, three or even four long-chain hydrocarbyl groups. Examples include alkyl trimethyl ammonium salts, such as C12 alkyl trimethyl ammonium chloride, or their analogues substituted with alkyl. The present invention can comprise 1% or more of cationic surfactants.
    [0045] Detersive amphoteric surfactants suitable for use in unit dose articles include those surfactants widely described as derived from secondary and tertiary aliphatic amines in which the aliphatic radical can be straight or branched chain and in which one of the aliphatic substituents contains from 8 to 18 carbon atoms and one contains an anionic group such as carboxy, sulfonate, sulfate, phosphate or phosphonate. Amphoteric detersive surfactants for use in the present invention include, but are not limited to: cocoanfoacetate, co-amphodiacetate, lauro anfoacetate, lauroamfodiacetate and mixtures thereof.
    [0046] Zwiterionic detersive surfactants suitable for use in unit dose articles of the present invention are well known in the art, and include surfactants widely described as derived from aliphatic quaternary ammonium, phosphonium and sulfonium compounds, in which the aliphatic radicals may be branched or straight chain, with one of the aliphatic substituents containing from about 8 to about 18 carbon atoms and one containing an anionic group, such as carboxy, sulfonate, sulfate, phosphate or phosphonate. Zwitterionics such as betaines are also suitable for this invention. In addition, amine oxide surfactants with the following formula: R (EO) x (PO) y (BO) zN (O) (CH2R ') 2.qH2O are also useful in the compositions of the present invention. R is a relatively long chain hydrocarbyl moiety, which may be saturated or unsaturated, linear or ramified, which may contain 8 to 20, preferably 10 to 16 carbon atoms and which is more preferably C12 alkyl -C16 primary. R 'is a short chain portion preferably selected from hydrogen, methyl and -CH2OH. When x + y + z is different from 0, EO is oxyethylene, PO is oxypropylene and BO is oxybutylene. Amine oxide surfactants are illustrated by C12-C14 alkyldimethyl amine oxide.
    [0047] Some non-limiting examples of other anionic, zwitterionic, amphoteric or optional additional surfactants suitable for use in compositions are described in McCutcheon's article, Emulsifiers and Detergents, 1989 yearbook, published by MC Publishing Co., and in US patents n °. 3,929,678, 2,658,072; 2,438,091; 2,528,378.
    [0048] Enzymes'. The unit-dose articles of the present invention may comprise from 0.0001% to 8%, by weight, of a detersive enzyme that provides cleaning performance and / or tissue treatment benefits. Such compositions preferably have a composition pH of 6 to 10.5. Suitable enzymes can be selected from the group consisting of: lipase, protease, amylases, cellulose, pectate lyase, xyloglucanase, and mixtures thereof. A preferred enzyme combination comprises a cocktail of conventional detersive enzymes, such as lipase, protease, cellulase and amylase. Detersive enzymes are described in more detail in U.S. Patent No. 6,579,839.
    [0049] Enzyme stabilizers: Enzymes can be stabilized using any stabilizing system known as calcium and / or magnesium compounds, boron compounds and substituted boric acids, aromatic borate esters, peptides and peptide derivatives, polyols, low molecular weight carboxylates, relatively hydrophobic organic compounds [for example, certain esters, dialkyl glycolic ethers, alcohols or alcohol alkoxylates], alkyl ether carboxylate in addition to a source of calcium ions, benzamidine hypochlorite, lower alcohols and acids carboxylics, N, N-bis (carboxy methyl) serine salts; (meth) acrylic acid, (meth) acrylic acid copolymer ester and PEG; composed of lignin, polyamide oligomer, glycolic acid or its salts; poly hexamethylene biguanide or N, N-bis-3-amino-propyl-dodecyl amine or salt; and mixtures thereof.
    [0050] Beneficial agents for tissue treatment: The unit dose article may comprise from 1% to 15%, more preferably from 2% to 7%, by weight, of a tissue treatment benefit agent. "Tissue treatment benefit agent" for use in the present invention refers to any material that can provide tissue treatment benefits. Some non-limiting examples of fabric treatment benefits include, but are not limited to: fabric softener, color protection, color restoration, small ball / fluff reduction, anti-abrasion and anti-pleats. Some non-limiting examples of beneficial agents for tissue treatment include: silicone derivatives, oily sugar derivatives, dispersible polyolefins, polymer latexes, cationic surfactants and combinations thereof.
    [0051] Cleaning polymers: The unit dose article of the present invention may contain from 0.01% to 10%, preferably from 0.05% to 5%, more preferably from 0.1% to 2.0% , by weight of cleaning polymers that offer dirt cleaning of surfaces and fabrics of a wide variety. Any suitable cleaning polymer can be used. Useful cleaning polymers are described in US 2009 / 0124528A1. Non-limiting examples of useful categories of cleaning polymers include: amphiphilic alkoxylated polymers for cleaning grease polymers for cleaning clay dirt polymers for releasing dirt; and dirt suspension polymers. Other anionic polymers, useful for optimizing dirt cleaning include: polymers of natural origin without silicone, but also of synthetic origin. Suitable anionic silicone-free polymers can be selected from the group consisting of xanthan gum, anionic starch, carboxymethyl guar, carboxymethyl hydroxypropyl guar, carboxymethyl cellulose and ester-modified carboxymethyl cellulose, N-carboxyalkyl chitosan, N-carboxyalkyl chitosan, amides, chitosan, pectin, chitosan, pectin, chitosan, pitos carrageenan gum, chondroitin sulfate, galactomannans, polymers based on hyaluronic acid and alginic acid, and derivatives of these items and mixtures thereof. More preferably, the anionic silicone-free polymer perhaps selected from carboxymethyl guar, carboxymethyl hydroxypropyl guar, carboxymethyl cellulose and xanthan gum, as well as derivatives of these items and mixtures thereof. Preferred anionic silicone-free polymers include those commercially available from CPKelco, sold under the trade name Kelzan® RD, and available from Aqualon, sold under the trade name Galactosol® SP722S, Galactosol® 60H3FD, and Galactosol® 70H4FD.
    [0052] Optical bleaches: These are also known as fluorescent bleaching agents for textile products. Preferred contents range from 0.001% to 2%, by weight, of the encapsulated portion of the unit dose article. Suitable bleaches are disclosed in EP 686691B and include hydrophobic as well as hydrophilic types. Bleach 49 is preferred for use in the present invention.
    [0053] Toning dyes: Toning dyes or fabric toning dyes are laundry auxiliary compounds useful in unit dose articles. Suitable dyes include blue and / or violet dyes that have a toning or shading effect. See, for example, documents WO 2009/087524 A1, W02009 / 087034A1 and the references contained therein. Recent developments that are suitable for the present invention include sulfonated phthalocyanine-based dyes that have a central zinc or aluminum atom. The unit-dose articles of the present invention may comprise from 0.00003% to 0.1%, preferably from 0.00008% to 0.05%, by weight, of the fabric toning dye.
    [0054] Particulate material: The unit dose article may include additional particulate material such as clays, foam suppressants, encapsulated ingredients sensitive to oxidation and / or thermally sensitive such as perfumes (perfume microcapsules), bleaches and enzymes; or aesthetic auxiliary compounds such as pearlizing agents including mica, pigment particles or the like. Suitable levels range from 0.0001% to 10%, or 0.1% to 5%, by weight, of the encapsulated portion of the unit dose article.
    [0055] Perfume and other odor control agents: In preferred embodiments, the unit dose item comprises a free and / or microencapsulated perfume. If present, the free perfume is typically incorporated in a content of 0.001 to 10%, preferably 0.01% to 5%, more preferably 0.1% to 3%, by weight, of the encapsulated portion of the article unit dose.
    [0056] If present, the perfume microcapsule is formed by surrounding, at least partially, the raw materials of the perfume with a wall material. Preferably, the microcapsule wall material comprises: melamine crosslinked with formaldehyde, polyurea, urea crosslinked with formaldehyde or urea crosslinked with glutaraldehyde. Suitable perfume microcapsules and nanocapsules include those described in the following references: US 2003215417 A1; US 2003216488 A1; US 2003158344 A1; US 2003165692 A1; US 2004071742 A1; US 2004071746 A1; US 2004072719 A1; US 2004072720 A1; EP 1393706 A1; US 2003203829 A1; US 2003195133 A1; US 2004087477 A1; US 20040106536 A1; US 6645479; US 6200949; US 4882220; US 4,917,920; US 4514461; US RE 32713; US 4,234,627.
    [0057] In other embodiments, the unit dose article comprises odor control agents such as uncomplicated cyclodextrin, as described in U.S. Patent No. 5,942,217. Other suitable odor control agents include those described in: US 5,968,404, US 5,955,093, US 6,106,738, US 5,942,217 and US 6,033,679.
    [0058] Hydrotropes: The liquid, non-aqueous composition of the unit dose article typically comprises a hydrotrope in an effective amount, preferably up to 15%, more preferably 1% to 10%, most preferably 3% to 6% , by weight, so that the liquid non-aqueous compositions readily disperse in water. Hydrotopes suitable for use in the present invention include anionic type hydrotopes, particularly sodium, potassium, and xylene ammonium sulfonate, sodium, potassium and ammonium toluene sulfonate, cumene ammonium sulfonate and potassium sodium, and mixtures thereof, as described in US 3,915,903.
    [0059] Multivalent organic water-soluble and / or chelator: The unit dose articles of the present invention may comprise from 0.6% to 25%, preferably from 1% to 20%, more preferably from 2% to 7% %, by weight, of the multivalent water-soluble organic body and / or chelators. Water-soluble organic builders offer a wide range of benefits including calcium and magnesium sequestration (improving hard water cleaning), alkalinity provision, transition metal ion complexation, metal oxide colloid stabilization and charge loading substantial surface for peptization and suspension of other soils. Chelators can selectively bind transition metals (such as iron, copper and manganese), which impact the removal of stains and the stability of bleach ingredients, such as organic bleach catalysts, in the washing solution. Preferably, the water-soluble multivalent organic body and / or chelators of the present invention are selected from the group consisting of: MEA citrate, citric acid, amino alkylene poly (alkylene phosphonates), ethane 1-hydroxy alkali metal phosphonates and trimethylene nitrile, phosphonates, diethylene triamine penta (methylene phosphonic acid) (DTPMP), ethylenediamine tetra (methylene phosphonic acid) (DDTMP), hexamethylene diamine tetra (methylene phosphonic acid), hydroxyethylene 1.1 diphosphonic acid (HEDP ), hydroxyethane dimethylene phosphonic acid, ethylene diamine disuccinic acid (EDDS), ethylenediamine tetraacetic acid (EDTA), hydroxyethyl ethylenediamine triacetate (HEDTA), nitrile triacetate (NTA), methyl glycine diacate (MGDA), imino dissuccinate ), hydroxy ethyl imino disuccinate (HIDS), hydroxy ethyl imino diacetate (HEIDA), glycine diacetate (GLDA), diethylene triamine pentaacetic acid (DTPA) and mixtures thereof.
    [0060] External structuring system: An external structuring system is a compound or mixture of compounds that provides a sufficient elastic limit or viscosity under low shear to stabilize the non-aqueous liquid composition independently, or extrinsically, of the structuring effect of any detersive surfactants in the composition. The non-aqueous liquid composition can comprise from 0.01% to 10%, preferably from 0.1% to 4%, by weight, of an external structuring system. Suitable external structuring systems include non-polymeric crystalline hydroxy-functional structurants, polymeric structurants, or mixtures thereof.
    [0061] Preferably, the external structuring system gives a viscosity under high shear at 20 s'1, at 21 ° C from 1 to 1,500 cps, and a viscosity under low shear (0.05 s1 at 21 ° C) than 5,000 cps. Viscosity is measured with the use of an AR 550 rheometer, available from TA instruments, with the use of a steel spindle with a 40 mm diameter plate and a span size of 500 pm. The viscosity under high shear of 20 s-1 and the viscosity under low shear of 0.5 s1 can be obtained by scanning at a logarithmic shear rate from 0.1 s-1 to 25 s1 in a time of 3 minutes at 21 ° Ç.
    [0062] The external structuring system can comprise from 0.01 to 1%, by weight, of a non-polymeric crystalline hydroxy-functional structuring. Such non-polymeric crystalline hydroxy-functional structuring agents generally comprise a crystallizable glyceride which can be pre-emulsified to aid dispersion in the final unit dose article. Preferred crystallizable glycerides include hydrogenated castor oil or "HCO", and derivatives thereof, as long as they are able to crystallize in the non-aqueous liquid composition. Other modalities of suitable external structuring systems may comprise from 0.01 to 5%, by weight, of a polymeric structural agent of natural and / or synthetic derivation. Examples of suitable naturally derived polymeric structurants include: hydroxy ethyl cellulose, hydrophobically modified hydroxyethyl cellulose, carboxymethyl cellulose, polysaccharide derivatives and mixtures thereof. Suitable polysaccharide derivatives include: pectin, alginate, arabinogalactane (gum arabic), carrageenan, gellan gum, xanthan gum, guar gum and mixtures thereof. Examples of suitable synthetic polymeric structurants include: polycarboxylates, polyacrylates, hydrophobically modified ethoxylated urethanes, hydrophobically modified nonionic polyols and mixtures thereof. Production process:
    [0063] Pre-mixing the cationic polymer and the fatty acid or salt, before combining with the other ingredients, further reduces the ability of the cationic polymer to complex with the water-soluble or dispersible film. Therefore, the present invention also provides a preferred process for producing a unit dose article, comprising the steps of: pre-mixing the cationic polymer with the fatty acid or salt to form a pre-mixture of cationic polymer and fatty acid or salt ; combining the cationic polymer / fatty acid premix with a non-aqueous liquid feed to form the non-aqueous liquid composition; and encapsulating the non-aqueous liquid composition in a water-soluble or dispersible film. Test methods: 1) pH measurement:
    [0064] The pH is measured in the pure composition, at 25 ° C, using a Santarius PT-10P pH meter with a gel-filled probe (such as the Toledo probe, part number 52 000 100), calibrated according to according to the instruction manual. 2) Particle size measurement method:
    [0065] The Occhio Flow Cell FC200-S (Angleur, Belgium) is used to measure the particle size distribution. The sample containing the particles to be analyzed is diluted to 2% by weight with the use of PEG200, to ensure the detection of a single particle. 2 mL of the diluted sample is analyzed according to the instructions provided with the device. 3) Method for measuring the solubility of water-soluble or dispersible films:
    [0066] 5.0 grams ± 0.1 grams of the water-soluble or dispersible film are added in a previously weighed 400 mL beaker and 245 mL ± 1 mL of distilled water are added. This is shaken vigorously on a magnetic stirrer set at 600 rpm for 30 minutes. Then, the mixture is filtered through a sintered glass filter with a maximum pore size of 20 microns. The water is dried from the filtrate collected by any conventional method, and the weight of the remaining material (which is the dissolved or dispersed fraction) is determined. The percentage of solubility or dispersibility can then be calculated. 4) Method for measuring the dissolution time of water-soluble or dispersible films:
    [0067] The film is cut and mounted on a slide assembly bending structure for 24 mm by 36 mm slide film, without glass (part number 94.000.07, available from Else, The Netherlands; meanwhile, bending structures of plastic from other suppliers can be used).
    [0068] A standard 600 mL glass beaker is filled with 500 mL of city water at 10 ° C and stirred using a magnetic stirring rod, so that the bottom of the vortex is at the height of the 400 mL graduation mark in the beaker.
    [0069] The mold is attached to a vertical bar and suspended in the water, with the horizontal side of 36 mm, along the diameter of the beaker, so that the edge of the mold is 5 mm from the side of the beaker and the top the mold is at the height of the 400 mL graduation mark. The timer starts as soon as the mold is placed in the water, and stopped when the film has completely dissolved. This time is recorded as the "film dissolution time". Examples:
    [0070] Example 1 is a non-aqueous liquid composition of the present invention, which comprises a cationic polymer (LK400) and a fatty acid. The unit dose article of the present invention is formed by encapsulating the non-aqueous liquid composition in a polyvinyl alcohol film (M8630, available from Monosol). Comparative example 1 and comparative example 2 comprise the same cationic polymer content, but no fatty acid or salt. Comparative example 1 replaces the fatty acid with additional polyethylene glycol 200. Comparative example 2 comprises a mixture of other anionic surfactants, nonionic surfactant, propanediol, and the cationic polymer, but does not contain fatty acid. In all three examples, the cationic polymer was present as a particulate.
    1Available from Dow Chemicals
    [0071] For the dissolution test, the polyvinyl alcohol film was first immersed in the respective non-aqueous liquid compositions for 2 weeks, at 35 ° C, with daily and manual agitation.
    [0072] From the comparison between the dissolution times of example 1 and comparative example 1, it can be seen that the fatty acid results in an optimization of 32% in the dissolution time of the film. As can be seen from comparative example 2, the presence of propanediol, an anionic surfactant and a non-ionic surfactant did not optimize the solubility of the film.
    [0073] Examples 2 to 7 are unit dose articles of the present invention comprising a cationic polymer (LK400) and a fatty acid in a non-aqueous liquid detergent composition, encapsulated in a polyvinyl alcohol film (M8630, available from Mono - Sun).
    1 Available from Dow Chemicals 2 Rhodia, Inc. of Cranbury, NJ, USA 3 BASF Corporation, North Mount Olive, NJ 4 JR30M in particulate form, added as a suspension in the non-aqueous dispersant (Pluriol E200) Lupasol SK under the particulate form, added as a suspension in the non-aqueous dispersant (Pluriol E200)
    [0074] The dimensions and values presented in the present invention should not be understood as being strictly limited to the exact numerical values mentioned. Instead, unless otherwise specified, each of these dimensions is intended to mean both the mentioned value and a range of functionally equivalent values around that value. For example, a dimension displayed as "40 mm" is intended to mean "about 40 mm".
    权利要求:
    Claims (16)
    [0001]
    1. Unit dose article, characterized by the fact that it contains a non-aqueous liquid composition comprising: a) from 0.1% to 15% by weight of a cationic polymer, in which the cationic polymer is cationic hydroxyethylcellulose and is present in a particulate form; b) from 0.2% to 40% by weight of a fatty acid or its salt; c) from 0.01% to 10% by weight of an external structuring system selected from the group consisting of non-polymeric crystalline hydroxy-functional structurings, polymeric structurants, or mixtures thereof; d) 10% to 70% by weight of an anionic and / or non-ionic surfactant; and e) a non-aqueous solvent; wherein the non-aqueous liquid composition comprises less than 15% by weight of water and is enclosed in a water-soluble or dispersible film.
    [0002]
    2. Unit dose article according to claim 1, characterized by the fact that the liquid non-aqueous composition comprises less than 12% by weight of water.
    [0003]
    3. Unit dose article according to claim 1, characterized in that the liquid non-aqueous composition comprises less than 8% by weight of water.
    [0004]
    A unit dose article according to claim 1, comprising from 0.5% to 30% by weight of the fatty acid or its salt.
    [0005]
    5. Unit dose article, according to claim 1, characterized by the fact that the water-soluble or dispersible film comprises resin selected from the group consisting of: polyvinyl alcohols, polyvinyl alcohol copolymers, hydroxypropyl methyl cellulose (HPMC) and mixtures thereof.
    [0006]
    6. Unit dose article, according to claim 1, characterized by the fact that the non-aqueous liquid composition comprises anionic surfactant.
    [0007]
    7. Unit dose article, according to claim 1, characterized by the fact that the non-aqueous liquid composition comprises non-ionic surfactant.
    [0008]
    8. Unit-dose article according to claim 1, characterized by the fact that the non-aqueous solvent comprises a polyalkylene glycol.
    [0009]
    9. Unit dose article according to claim 8, characterized by the fact that polyalkylene glycol is polyethylene glycol.
    [0010]
    10. Unit dose article, according to claim 1, characterized by the fact that the external structuring system is a crystallizable glyceride.
    [0011]
    11. Unit dose article according to claim 1, characterized by the fact that it comprises from 0.6% to 10% by weight of the cationic polymer.
    [0012]
    12. Unit-dose article according to claim 1, characterized by the fact that the non-aqueous composition has a pH of 6 to 10.5.
    [0013]
    13. Unit dose article according to claim 1, characterized by the fact that the non-aqueous composition has a pH of 6.5 to 9.
    [0014]
    14. Unit-dose article according to claim 1, characterized by the fact that the non-aqueous composition has a pH of 7 to 8.
    [0015]
    15. Unit dose article according to claim 1, characterized by the fact that it is a unit dose form with multiple compartments.
    [0016]
    16. Process for preparing the unit dose article, as defined in any one of claims 1 to 15, characterized by the fact that it comprises the steps of: a. pre-mixing the cationic polymer with the fatty acid or its salt to form a pre-mixture of the cationic polymer and a pre-mixture of fatty acid; B. combining the cationic polymer / fatty acid premix or its salt with a non-aqueous liquid feed to form the non-aqueous liquid composition; and c. encapsulate the non-aqueous liquid composition in a water-soluble or dispersible film.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112012032888B1|2020-10-20|unit dose article comprising a cationic polymer and process for preparing it
    US9550962B2|2017-01-24|Stable non-aqueous liquid compositions comprising a cationic polymer in particulate form
    ES2394066T3|2013-01-16|Stable compositions comprising cationic cellulose polymer and cellulase
    WO2015065805A1|2015-05-07|Stable non-aqueous liquid compositions comprising insoluble or weakly soluble ingredients
    WO2015065809A1|2015-05-07|Stable non-aqueous liquid compositions comprising a cationic polymer in particulate form
    同族专利:
    公开号 | 公开日
    JP2013534554A|2013-09-05|
    CN107603748A|2018-01-19|
    MX2012015197A|2013-01-24|
    CN102959070A|2013-03-06|
    WO2011163428A1|2011-12-29|
    MX353036B|2017-12-18|
    EP2399979B1|2014-10-15|
    RU2012148752A|2014-07-27|
    EP2399979A1|2011-12-28|
    CN105820885A|2016-08-03|
    CA2800008A1|2011-12-29|
    EP2399979B2|2021-12-29|
    PL2399979T3|2015-03-31|
    AR081983A1|2012-10-31|
    BR112012032888A2|2016-11-29|
    RU2543718C2|2015-03-10|
    US20110319311A1|2011-12-29|
    CA2800008C|2015-07-14|
    ZA201208667B|2014-04-30|
    US8889610B2|2014-11-18|
    US20150057210A1|2015-02-26|
    ES2527679T3|2015-01-28|
    JP5675971B2|2015-02-25|
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    法律状态:
    2018-04-10| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-02-26| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|
    2019-11-19| B06G| Technical and formal requirements: other requirements [chapter 6.7 patent gazette]|
    2020-05-05| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-06-09| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-10-20| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/06/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP10167234.3A|EP2399979B2|2010-06-24|2010-06-24|Soluble unit dose articles comprising a cationic polymer|
    EP10167234.3|2010-06-24|
    PCT/US2011/041544|WO2011163428A1|2010-06-24|2011-06-23|Soluble unit dose articles comprising a cationic polymer|
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