Fabric conditioning composition

Abstract

A fabric conditioning composition comprising: a) a fabric softening active; and b) a copolymer polymerized from monomers comprising: i) at least one cationic ethylenically unsaturated monomer; and ii) optionally at least one non-ionic and / or anionic ethylenically unsaturated monomer; wherein the copolymer is polymerized in the presence of a crosslinker and a chain transfer agent; and wherein the concentration of the chain transfer agent is from 280 to 500 ppm by weight of total monomers.

Description

Technical Field

[0001] This invention belongs to the field of fabric conditioning agents. Specifically, this invention relates to fabric conditioning compositions comprising thickening polymers. Background Technology

[0002] Fabric conditioners are a popular household cleaning product used to reduce the roughness of clothes after washing and air drying. Fabric conditioners typically coat the surface of a fabric with a charged substance, causing the threads to "stand up" and thus imparting a softer, fluffier texture.

[0003] Typically, most household fabric conditioners contain thickeners (such as thickening polymers) to control properties such as viscosity and appearance. The challenge is to maintain a stable viscosity of the fabric conditioner with minimal fluctuations under various conditions, such as temperature. Viscosity stability can provide a measure of product quality. Significant changes in viscosity under various conditions can indicate a decline in quality and negatively impact consumer acceptance of the product.

[0004] WO 90 / 12862 discloses a fabric conditioning formulation containing a crosslinked cationic polymer of an olefinically unsaturated monomer or a blend of monomers as a thickener, wherein the crosslinking agent is a polyene-functionalized crosslinking agent of 5-45 ppm.

[0005] US2002 / 0132749 discloses a thickening fabric conditioner containing a specific polymer thickener obtained by polymerizing 5 to 100 mol% of a cationic vinyl adduct monomer, 0 to 95 mol% of acrylamide, and 70 to 300 ppm of a bifunctional vinyl adduct monomer crosslinking agent.

[0006] US2014 / 0047649A1 discloses a method for softening clothing using a softening composition, said softening composition comprising at least one thickener containing a cationic polymer obtained by polymerization of a cationic monomer or a monomer of formula (I) having hydrophobic properties: Anonymous: “Cationic polymeric thickeners useful in fabric softeners”, XP007125401, discloses branched and / or crosslinked cationic polymers of olefinic unsaturated monomers or monomer blends, which can be used as thickeners in conditioning formulations.

[0007] EP3034595A1 discloses a method for preparing a cationic polymer thickener in particulate form, the polymer comprising a crosslinked, water-swellable cationic polymer containing at least one cationic monomer and optionally at least one nonionic monomer and / or at least one anionic monomer, wherein the polymer has a water-extractable polymer content of less than 15% by weight relative to the weight of the polymer, and wherein the polymer is obtained by gel polymerization of the monomer in the presence of a crosslinking agent in the presence of 500 ppm to 10,000 ppm relative to the weight of the monomer.

[0008] US2006 / 0252669A1 discloses a fabric softener composition comprising: (a) 0.01 wt% to 50 wt% of a cationic or nonionic softening compound; (b) at least 0.001 wt% of a water-dispersible crosslinked cationic polymer derived from the polymerization of 5 to 100 mol% of a cationic vinyl adduct monomer, 0 to 95 mol% of acrylamide, and 5 to 500 ppm of a bifunctional vinyl adduct monomer crosslinker; and (c) an effective amount of at least one beneficial fabric or skin ingredient contained within microcapsules, the capsule shell comprising a urea-formaldehyde or melamine-formaldehyde polymer and a second polymer comprising one or more acid anhydrides or copolymers.

[0009] US2011 / 0269663A1 discloses a fabric conditioning composition comprising a polymer and a fabric softening active substance, characterized in that the polymer is a water-swellable cationic copolymer crosslinked with at least one cationic monomer and other monomers optionally selected from nonionic and anionic monomers, characterized in that the polymer comprises less than 25% of the total weight of the polymer and the crosslinking agent concentration is from 500 ppm to 5000 ppm relative to the polymer.

[0010] US2011 / 0301312A1 discloses a cationic polymer thickener comprising a crosslinked, water-swellable cationic polymer containing at least one cationic monomer and optionally nonionic and / or anionic monomers, wherein the polymer comprises less than 25% by weight of water-soluble polymer chains and the crosslinking agent concentration is from 500 ppm to 5000 ppm relative to the polymer.

[0011] Despite the existence of existing technologies, there remains a need to provide fabric conditioning compositions with improved viscosity stability. Summary of the Invention

[0012] In a first aspect, the present invention relates to a fabric conditioning composition comprising: a) Fabric softening active substances; and b) A copolymer polymerized from monomers, wherein the monomers comprise: (i) at least one cationic olefinic unsaturated monomer; and (ii) Optionally at least one nonionic and / or anionic olefinic unsaturated monomer; The copolymer is polymerized in the presence of a crosslinking agent and a chain transfer agent; and The concentration of the chain transfer agent is 280 to 500 ppm based on the total monomer weight.

[0013] In a second aspect, the present invention relates to the use of fabric conditioning compositions according to any embodiment of the first aspect in providing softening benefits to washed fabrics during the washing process.

[0014] All other aspects of the invention will become more readily apparent upon consideration of the following detailed description and embodiments. Detailed Implementation

[0015] Unless explicitly stated in the embodiments or otherwise, all figures in this specification indicating the amount of material or reaction conditions, the physical properties of the material and / or its use may optionally be understood to be modified by the word “about”.

[0016] Unless otherwise stated, all quantities are by weight of the composition.

[0017] It should be noted that when specifying any range of values, any particular upper limit value can be associated with any particular lower limit value.

[0018] To avoid ambiguity, the word "contains" is intended to mean "including," but not necessarily "composed of" or "consisting of." In other words, the steps or options listed do not need to be exhaustive.

[0019] The disclosure of the invention found herein is intended to cover all embodiments found in claims that are multi-dependent on each other, regardless of the fact that claims may be found without multi-dependent or redundant claims.

[0020] Where features are disclosed with respect to a particular aspect of the invention (e.g., the compositions of the invention), it is considered that such disclosure, with necessary modifications, is also applicable to any other aspect of the invention (e.g., the methods of the invention).

[0021] Copolymer The fabric conditioning composition of the present invention comprises a copolymer polymerized from monomers comprising: (i) at least one cationic olefinically unsaturated monomer and (ii) optionally at least one nonionic and / or anionic olefinically unsaturated monomer. Based on the total weight of the fabric conditioning composition, the composition preferably comprises 0.001 to 5% by weight, more preferably 0.005 to 3% by weight, even more preferably 0.01 to 1% by weight, still more preferably 0.02 to 0.5% by weight, and most preferably 0.05 to 0.2% by weight of the copolymer, and includes all ranges contained therein.

[0022] Examples of suitable cationic olefinic unsaturated monomers include, but are not limited to, quaternary ammonium salts of dimethylaminoethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide, dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, diallylamine, methyldiallylamine, or mixtures thereof. Preferably, the cationic olefinic unsaturated monomer comprises quaternary ammonium salts of dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, or mixtures thereof. Dimethylaminoethyl (meth)acrylate is particularly preferred. "(meth)acrylate" refers to both acrylate and methacrylate.

[0023] Examples of suitable nonionic olefinically unsaturated monomers include, but are not limited to, acrylamide, methacrylamide, N-alkylacrylamide, N-vinylpyrrolidone, N-vinylformamide, N-vinylacetamide, vinyl acetate, vinyl alcohol, acrylate, allyl alcohol, or mixtures thereof. Acrylamide and methacrylamide are particularly preferred.

[0024] Examples of suitable anionic olefinic unsaturated monomers include, but are not limited to, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, and monomers that perform sulfonic or phosphonic acid functions, such as 2-acrylamido-2-methylpropanesulfonic acid, or mixtures thereof.

[0025] Monomers may also contain hydrophobic groups.

[0026] The cationic olefinic unsaturated monomer is preferably present in an amount of 20 to 100% by weight of the total monomers, more preferably 40 to 99% by weight, even more preferably 60 to 98% by weight, and most preferably 80 to 96% by weight. The nonionic and / or anionic olefinic unsaturated monomer is preferably present in an amount of 0 to 80% by weight of the total monomers, more preferably 1 to 60% by weight, even more preferably 2 to 40% by weight, and most preferably 4 to 20% by weight.

[0027] A particularly preferred copolymer is a copolymer of acrylamide and trimethylaminoethyl methacrylate chloride.

[0028] The copolymers of the present invention are prepared in a conventional water-in-oil emulsion by polymerizing at least one cationic olefinic unsaturated monomer and optionally at least one nonionic and / or anionic olefinic unsaturated monomer in the presence of a crosslinking agent and a chain transfer agent, wherein the concentration of the chain transfer agent is 280 to 500 ppm by weight of the total monomers.

[0029] Crosslinking agents are used to produce polymers having partially or substantially crosslinked three-dimensional networks. Examples of suitable crosslinking agents include, but are not limited to, methylenebisacrylamide (MBA), ethylene glycol diacrylate, polyethylene glycol dimethacrylate, diacrylamide, triallylamine, cyanomethacrylate, vinyloxyethyl acrylate, methacrylate, formaldehyde, glycidaldehyde, glycidyl ether type compounds (such as ethylene glycol diglycidyl ether), epoxyde, or mixtures thereof. Preferably, the crosslinking agent includes methylenebisacrylamide, ethylene glycol diacrylate, polyethylene glycol dimethacrylate, diacrylamide, triallylamine, or mixtures thereof. Methylenebisacrylamide is particularly preferred.

[0030] The concentration of the crosslinking agent is preferably 100 to 300 ppm, more preferably 150 to 250 ppm, and even more preferably 180 to 230 ppm, based on the total monomer weight.

[0031] Chain transfer agents can help control the polymer chain length of copolymers. Examples of suitable chain transfer agents include, but are not limited to, isopropanol, sodium hypophosphite, mercaptoethanol, sodium formate, or mixtures thereof. Preferably, chain transfer agents include sodium hypophosphite, sodium formate, or mixtures thereof.

[0032] The concentration of the chain transfer agent is 280 to 500 ppm, preferably 300 to 450 ppm, more preferably 300 to 400 ppm, and most preferably 320 to 380 ppm, based on the total monomer weight.

[0033] The copolymers of the present invention can be prepared by reverse oil-in-water emulsion polymerization. This means that during polymerization, the aqueous monomers are emulsified into a suitable oil phase in the presence of an oil-in-water emulsifier. Details of emulsifiers, polymerization stabilizers, non-aqueous liquids, and other reverse polymerization materials and methods are described, for example, in EP 126528.

[0034] As is well known, the reverse emulsion thus obtained can be dehydrated, and the concentration of the polymeric thickener obtained in the reverse emulsion is 15% to 65% by weight.

[0035] Liquid products from emulsion polymerization are typically used as is without separating the polymer particles from them; however, if desired, the dried polymer particles can be separated using all known techniques. These methods involve separating the active material (i.e., the polymer) from the other components of the emulsion. Methods such as the following can be used: - Precipitation occurs in non-solvent media (such as acetone, methanol, and other polar solvents). - Simple filtration, which then allows for the separation of polymer particles. - Azeotropic distillation in the presence of an agglomerating agent and a stabilizing polymer allows for the acquisition of agglomerates that can be easily separated by filtration before the particles are dried. - "Spray drying," or drying by atomization or pulverization, involves a controlled period of time during which a cloud of emulsion droplets is generated in a stream of hot air.

[0036] When an oil-in-polymer emulsion produced by reverse polymerization is used as is and added directly to water to form an aqueous composition, it is carried out in the conventional manner in the presence of an oil-in-water emulsifier.

[0037] Fabric softening active The fabric conditioning compositions of the present invention comprise fabric softening active substances. The fabric softening active substances can be any material known for softening fabrics. These can be polymeric materials or compounds of known softening materials. Examples of suitable fabric softening active substances include quaternary ammonium compounds, siloxane polymers, polysaccharides, clays, amines, fatty esters, dispersible polyolefins, polymer latexes, and mixtures thereof.

[0038] The fabric softening active material is preferably a cationic or nonionic material. Preferably, the fabric softening active material of the present invention is a cationic material. Suitable cationic fabric softening active materials are described herein.

[0039] The preferred softening active substance used in the fabric conditioning agent composition of the present invention is a quaternary ammonium compound (QAC).

[0040] The QAC preferably contains at least one chain derived from a fatty acid, more preferably at least two chains derived from fatty acids. Generally, fatty acids are defined as aliphatic monocarboxylic acids having a chain of 4 to 28 carbon atoms. Fatty acids can be derived from various sources, such as beef tallow or plant sources. Preferably, the fatty acid chains are derived from plants. Preferably, the fatty acid chains of the QAC contain 10 to 50% by weight of saturated C18 chains and 5 to 40% by weight of monounsaturated C18 chains, based on the total fatty acid chain weight. In a further preferred embodiment, the fatty acid chains of the QAC contain 20 to 40% by weight, preferably 25 to 35% by weight, of saturated C18 chains and 10 to 35% by weight, preferably 15 to 30% by weight of monounsaturated C18 chains, based on the total fatty acid chain weight.

[0041] The preferred quaternary ammonium fabric softening active material used in the compositions of the present invention is a so-called "ester quaternary ammonium salt" or ester-linked quaternary ammonium compound. Particularly preferred materials are ester-linked triethanolamine (TEA) quaternary ammonium compounds comprising a mixture of monoester-linked, diester-linked, and trimerster-linked components.

[0042] Typically, TEA-based fabric softening compounds comprise a mixture of monoester, diester, and trimer forms of the compound, wherein the diester-linked component comprises no more than 70% by weight, preferably no more than 60% by weight, for example no more than 55% by weight, or even no more than 45% by weight, and contains at least 10% by weight of the monoester-linked component.

[0043] The first group of quaternary ammonium compounds (QACs) applicable to the compositions described herein are represented by formula (I): Each R is independently selected from C5 to C35 alkyl or alkenyl groups; R 1 The designation represents C1 to C4 alkyl, C2 to C4 alkenyl, or C1 to C4 hydroxyalkyl; T can be O-CO (i.e., an ester group bonded to R via its carbon atom), or alternatively, CO-O (i.e., an ester group bonded to R via its oxygen atom); n is a number selected from 1 to 4; m is a number selected from 1, 2, or 3; and X- is an anionic counterion, such as a halide ion or an alkyl sulfate ion, for example, a chloride ion or a methyl sulfate ion. Diester variants of Formula I (i.e., m=2) are preferred and generally have associated monoester and trimer ester analogs. Such materials are particularly suitable for the present invention.

[0044] The second group of QAC applicable to the compositions described herein is represented by formula (II): Each R 1 The groups are independently selected from C1 to C4 alkyl, hydroxyalkyl, or C2 to C4 alkenyl; and each R 2 The groups are independently selected from C8 to C28 alkyl or alkenyl groups; and wherein n, T and X- are as defined above.

[0045] Preferred materials in this second group include 1,2-bis[tearyloxy]-3-trimethylammonium propane chloride, 1,2-bis[cracked tearyloxy]-3-trimethylammonium propane chloride, 1,2-bis[oleyloxy]-3-trimethylammonium propane chloride, and 1,2-bis[stearoyloxy]-3-trimethylammonium propane chloride. Such materials are described in US 4,137,180 (Lever Brothers). Preferably, these materials also contain a certain amount of the corresponding monoester.

[0046] The third group of QAC applicable to the compositions described herein is represented by formula (III): (R 1 )2-N + -[(CH2) n -TR 2 ]2X - (III) Each R 1 The groups are independently selected from C1 to C4 alkyl or C2 to C4 alkenyl; and each R 2 The groups are independently selected from C8 to C28 alkyl or alkenyl groups; and n, T, and X- are as defined above. Preferred materials in this third group include bis(2-tartroyloxyethyl)dimethylammonium chloride, its partially cured and cured forms.

[0047] Suitable quaternary ammonium compounds in the fourth group are represented by formula (IV): (IV) The fifth group of QAC applicable to this invention is represented by formula (V): (V) Where R 1 and R 2 Each independently is C 10 To C 22 Alkyl or alkenyl, preferably C 14 To C 20 Alkyl or alkenyl. X - as defined above.

[0048] The iodine value of the quaternary ammonium fabric conditioning material is preferably 0 to 80, more preferably 0 to 60, and most preferably 0 to 45. The iodine value can be suitably selected. Substances with substantially saturated iodine values ​​of 0 to 5, preferably 0 to 1, can be used in the compositions described herein. Such materials are referred to as “hardening” quaternary ammonium compounds.

[0049] A further preferred range for the iodine value is 20 to 60, more preferably 25 to 50, and even more preferably 30 to 45. This type of material is a "soft" triethanolamine quaternary ammonium compound, preferably triethanolamine dialkyl ester methyl sulfate. This ester-linked triethanolamine quaternary ammonium compound contains unsaturated aliphatic chains.

[0050] If the composition contains a mixture of quaternary ammonium substances, the above iodine value represents the average iodine value of the parent fatty acyl compounds or fatty acids of all the quaternary ammonium substances present. Similarly, if the composition contains any saturated quaternary ammonium material, the iodine value represents the average iodine value of the parent fatty acid acyl compounds of all the quaternary ammonium materials present.

[0051] In the context of this invention, the iodine value refers to the degree of unsaturation present in the material of the fatty acids used to generate QAC, as measured by NMR spectroscopy methods as described in Anal. Chem. Soc. 34, 1136 (1962) Johnson and Shoolery.

[0052] Another type of quaternary ammonium compound can be a non-ester quaternary ammonium material represented by formula (VI): (VI) Each R 1 The group is independently selected from C1 to C4 alkyl, hydroxyalkyl, or C2 to C4 alkenyl; R 2 The groups are independently selected from C8 to C28 alkyl or alkenyl groups, and X- is as defined above.

[0053] Preferably, the fabric conditioning composition of the present invention comprises more than 1% by weight of a fabric softening active substance, more preferably more than 2% by weight, and most preferably more than 3% by weight. Preferably, the fabric conditioning agent of the present invention comprises less than 40% by weight of a fabric softening active substance, more preferably less than 30% by weight, and most preferably less than 25% by weight. Suitably, the fabric conditioning composition comprises 1 to 40% by weight of a fabric softening active substance, preferably 2 to 30% by weight, and more preferably 3 to 25% by weight.

[0054] The fabric conditioning compositions described herein may be concentrated. If the fabric conditioning agent is a concentrated composition, preferably the fabric conditioning composition contains more than 10% by weight of a fabric softening active substance, more preferably more than 15% by weight of a fabric softening active substance, and most preferably more than 20% by weight of a fabric softening active substance. Preferably, the fabric conditioning composition of the present invention contains less than 50% by weight of a fabric softening active substance, more preferably less than 45% by weight of a fabric softening active substance, and most preferably less than 40% by weight of a fabric softening active substance. Suitably, the concentrated fabric conditioning composition contains 10 to 50% by weight of a fabric softening active substance, preferably 15 to 45% by weight of a fabric softening active substance, and more preferably 20 to 40% by weight of a fabric softening active substance.

[0055] Co-active The fabric conditioning compositions of the present invention may contain co-active substances. Co-active substances may contribute to the dissolution of softening active substances or even provide additional softening benefits.

[0056] Suitable co-active substances include, for example, fatty alcohols, single-chain cationic surfactants, nonionic surfactants, polyethylene glycol, or mixtures thereof. Fatty alcohols are most preferred. Useable fatty alcohols include tallow alcohol or phytosterols, particularly preferred are cured tallow alcohol or cured phytosterols (available under the trade names Stenol™ and Hydrenol™ from BASF and Laurex™ CS from Huntsman). Preferably, the fatty alcohol has a C 12 To C 22 C is preferred 14 To C 20The fatty chain length. Cetearyl alcohol is particularly preferred. The fatty alcohol may be present in the composition in an amount of 0.01 to 10% by weight, preferably 0.1 to 5% by weight, more preferably 0.2 to 1% by weight.

[0057] The co-active substance can be a single-chain cationic surfactant. The single-chain cationic surfactant preferably has the general formula (VII): (R 1 )3-N + -R 2 X - (VII) Each R 1 Each R independently contains 1 to 6 carbon atoms, selected from alkyl, alkenyl, aryl, or combinations thereof. 1 It may independently contain a hydroxyl group. Preferably, R 1 At least two of the groups correspond to methyl groups.

[0058] Where R 2 It contains at least 10 carbon atoms. The carbon atoms can be alkyl, alkenyl, aryl, or combinations thereof. Preferably, the single-chain cationic surfactant contains at least 12, more preferably at least 14, and most preferably at least 16 carbon atoms. 2 It may further contain additional functional groups, such as ester or hydroxyl groups.

[0059] X - These are anionic counterions, such as halide ions or alkyl sulfate ions, for example, chloride ions or methyl sulfate ions.

[0060] Preferred cationic surfactants include hydroxyethyl lauryl dimethyl ammonium chloride, cetyl trimethyl ammonium chloride (CTAC), behenyl trimethyl ammonium chloride (BTAC), and alkyl dimethyl hydroxyethyl ammonium chloride, such as Praepagen HY from Clariant GmbH.

[0061] The co-active material can be a nonionic surfactant. Suitable nonionic surfactants include addition products of ethylene oxide and / or propylene oxide with fatty alcohols, fatty acids, and fatty amines. Any alkoxylated material of a specific type described below can be used as a nonionic surfactant.

[0062] Suitable surfactants are essentially water-soluble surfactants of general formula (VIII): RY-(C2H4O) z -CH2-CH2-OH (VIII) R is selected from primary, secondary and branched alkyl and / or acyl hydrocarbon groups; primary, secondary and branched alkenyl hydrocarbon groups; and primary, secondary and branched alkenyl-substituted phenolic hydrocarbon groups; the hydrocarbon groups have a chain length of 8 to about 25, preferably 10 to 20, for example 14 to 18 carbon atoms.

[0063] In the general formula of ethoxylated nonionic surfactants, Y is usually: -O-, -C(O)O-, -C(O)N(R)- or -C(O)N(R)R-, Where R has the meaning given in equation (VII) above, or may be hydrogen; and Z is a number of at least about 8, preferably at least about 10 or 11.

[0064] Preferably, the HLB of the nonionic surfactant is from about 7 to about 20, more preferably from 10 to 18, for example from 12 to 16. Genapol™ 0200 (Clariant), based on coconut oil chains and 20 EG groups, is an example of a suitable nonionic surfactant.

[0065] Preferred nonionic surfactants include addition products of ethylene oxide and / or propylene oxide with fatty alcohols, fatty acids, and fatty amines. These are preferably selected from (a) addition products of alkoxides selected from ethylene oxide, propylene oxide, and mixtures thereof with (b) fatty materials selected from fatty alcohols, fatty acids, and fatty amines.

[0066] The second preferred type of nonionic surfactant is polyethylene glycol ether of glycerol. Examples include glycerol polyether-6 cocoate, glycerol polyether-7 cocoate, and glycerol polyether-17 cocoate.

[0067] Preferably, the nonionic surfactant is selected from the addition products of ethylene oxide and / or propylene oxide with fatty alcohols, fatty acids and fatty amines, as well as polyethylene glycol ethers of glycerol.

[0068] Suitable nonionic surfactants are available from BASF as Lutensol™ AT25, which is based on a C16:18 chain and 25 EO groups and is an example of a suitable nonionic surfactant. Other suitable surfactants include Renex 36 (tetrazane polyether-6) from Croda; Ttergitol 15-S3 from Dow Chemical Co.; Dihydrol LT7 from ThaiEthoxylate Ltd.; Cremophor CO40 from BASF and Neodol 91-8 from Shell; and LEVENOL® F-200, LEVENOL® C-301, and LEVENOL® C-201 from KAO.

[0069] If present, the nonionic surfactant is present in an amount of 0.01 to 10% by weight of the composition, preferably 0.01 to 5% by weight, more preferably 0.02 to 1% by weight, and even more preferably 0.03 to 0.6% by weight.

[0070] Fragrance Preferably, the fabric conditioning composition comprises a fragrance component. The fragrance component can be a free fragrance and / or an encapsulated fragrance (fragrance microcapsules). Encapsulation materials preferably include, but are not limited to: amino plastics, proteins, polyurethanes, polyacrylates, polymethacrylates, polysaccharides, polyamides, polyolefins, gums, siloxanes, lipids, modified cellulose, polyphosphates, polystyrene, polyesters, or combinations thereof. More preferably, the encapsulation material includes amino plastics, such as melamine-formaldehyde or urea-formaldehyde microcapsules, proteins, and / or polysaccharides. The fabric conditioning composition preferably comprises 0.001 to 20% by weight of the fragrance component, more preferably 0.005 to 10% by weight of the fragrance material, even more preferably 0.01 to 5% by weight of the fragrance material, and most preferably 0.02 to 3% by weight of the fragrance material.

[0071] Other ingredients Fabric conditioning compositions may preferably contain further ingredients suitable for fabric conditioning agents. Among these materials may be mentioned: defoamers, insect repellents, coloring or toning dyes, preservatives (e.g., bactericides), pH buffers, fragrance carriers, water-soluble agents, anti-redeposition agents, detergents, polyelectrolytes, anti-shrinkage agents, anti-wrinkle agents, antioxidants, dyes, colorants, sunscreens, preservatives, draping agents, antistatic agents, chelating agents, and ironing auxiliaries.

[0072] The products of this invention may contain pearlescent agents and / or opacifiers. Preferred chelating agents are abbreviations for HEDP, etidronic acid, or 1-hydroxyethane-1,1-bisphosphonic acid.

[0073] Product form The fabric conditioning composition of the present invention is a softening composition suitable for use as a rinsing additive in the laundry process. The composition is preferably a liquid.

[0074] The composition may be a concentrate diluted in a solvent (including water) before use. The composition may also be a ready-to-use (in-use) composition. Preferably, the composition is provided as a ready-to-use liquid composition.

[0075] The composition is preferably in an aqueous form. Preferably, the composition contains at least 75% by weight of water, more preferably 80 to 98% by weight, and even more preferably 85 to 96% by weight of water.

[0076] The composition is preferably used in the rinsing cycle of household textile washing operations, wherein it can be added directly to the washing machine in its undiluted state, for example through the dispenser drawer, or, for top-loading washing machines, directly into the drum. Alternatively, it can be diluted before use. The composition of the invention can also be used in industrial laundry operations, for example as a finishing agent for softening new clothes before being sold to consumers.

[0077] Method of making a composition The fabric conditioning compositions of the present invention are typically prepared by combining a melt containing a fabric-softening active substance with an aqueous phase. The copolymers of the present invention can be combined with an aqueous phase, or can be quantitatively added to the composition after the melt and aqueous phase have been combined.

[0078] Use of a composition The fabric conditioning composition of the present invention can be supplied in a multi-dose plastic package with a top or bottom closure. The dispensing device can be provided as part of the lid or as an integrated system with the package. Preferably, the composition is stored in a molded article. Preferably, such a molded article contains post-consumer recycled material.

[0079] Typically, the primary use of the compositions of the present invention is to provide fabric care benefits to washed fabrics during the laundry process. Preferably, the compositions are used to provide softening benefits to washed fabrics during the laundry process.

[0080] The following embodiments are provided to illustrate the invention. These embodiments are not intended to limit the scope of the claims.

[0081] Example Example 1: Preparation of copolymer The aqueous and oil phases were prepared separately by mixing the following components as shown in Table 1.

[0082] Table 1

[0083] The pH of the aqueous phase was adjusted to 5.0-6.0 using 0.075 parts citric acid. The aqueous phase was then added to the oil phase with stirring. The mixture was then emulsified under high shear to form a water-in-oil emulsion. The water-in-oil emulsion was then transferred to a glass reactor, stirred, and nitrogen was introduced to remove oxygen from the reactor. Subsequently, 2.3 parts of an aqueous solution of sodium metabisulfite (1%) was added dropwise to initiate the polymerization reaction at room temperature, followed by adiabatic heating to 50°C and maintaining the reaction for 3 hours. After the reaction, 3 parts of fatty alcohol polyoxyethylene ether were added to the resulting polymer emulsion with stirring and mixed thoroughly.

[0084] Example 2: Evaluation of viscosity The fabric conditioning compositions were prepared as shown in Table 2. All components are expressed as a percentage by weight of the total formulation.

[0085] Table 2

[0086] a. A copolymer of acrylamide and trimethylaminoethyl methacrylate chloride, traded under the name GLTSTA303, obtained from Guangdong Goodlight New Materials Tech Co., Ltd. (the concentration of the crosslinking agent is 150-250 ppm and the concentration of the chain transfer agent is 100-200 ppm). b. Polymer prepared according to Example 1 c. The polymer prepared according to Example 1 d. Diester of triethanolamine methyl sulfate obtained from Solvay under the trade name TEP 88L.

[0087] Table 3 shows the samples prepared at different temperatures. Samples were prepared at 25℃ with a 10... 6 s -1 The shear rate was measured using a HAAKEVT550 viscometer with a measuring rotor MV1 to determine the viscosity of the samples. The viscosity of the samples is reported in Table 3.

[0088] Table 3

[0089] The results show that sample 1 according to the present invention exhibits a smaller viscosity change than comparative samples A and B at different preparation temperatures, indicating that it has excellent viscosity stability under different temperature conditions.

Claims

1. A fabric conditioning composition comprising: a) Fabric softening active substances; and b) Copolymers polymerized from monomers comprising: (i) at least one cationic olefinic unsaturated monomer; and (ii) Optionally at least one nonionic and / or anionic olefinic unsaturated monomer; The copolymer is polymerized in the presence of a crosslinking agent and a chain transfer agent; and The concentration of the chain transfer agent is 280 to 500 ppm based on the total monomer weight.

2. The fabric conditioning composition according to claim 1, wherein the cationic olefinic unsaturated monomer comprises a quaternary ammonium salt of dimethylaminoethyl (meth)acrylamide, dimethylaminopropyl (meth)acrylamide, dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, diallylamine, methyldiallylamine, or a mixture thereof.

3. The fabric conditioning composition according to claim 1 or claim 2, wherein the cationic olefinic unsaturated monomer comprises a quaternary ammonium salt of dimethylaminoethyl (meth)acrylate, dimethylaminopropyl (meth)acrylate, or a mixture thereof.

4. The fabric conditioning composition according to any one of the preceding claims, wherein the nonionic olefinic unsaturated monomer comprises acrylamide, methacrylamide, N-alkylacrylamide, N-vinylpyrrolidone, N-vinylformamide, N-vinylacetamide, vinyl acetate, vinyl alcohol, acrylate, allyl alcohol, or mixtures thereof.

5. The fabric conditioning composition according to any one of claims 1 to 3, wherein the anionic olefinic unsaturated monomer comprises acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, 2-acrylamido-2-methylpropanesulfonic acid, or a mixture thereof.

6. The fabric conditioning composition according to any one of the preceding claims, wherein the copolymer is a copolymer of acrylamide and trimethylaminoethyl methacrylate chloride.

7. The fabric conditioning composition according to any one of the preceding claims, wherein the chain transfer agent comprises isopropanol, sodium hypophosphite, mercaptoethanol, sodium formate, or a mixture thereof.

8. The fabric conditioning composition according to any one of the preceding claims, wherein the concentration of the chain transfer agent is 300 to 450 ppm, preferably 300 to 400 ppm, based on the total monomer weight.

9. The fabric conditioning composition according to any one of the preceding claims, wherein the crosslinking agent comprises methylene bisacrylamide, ethylene glycol diacrylate, polyethylene glycol dimethacrylate, diacrylamide, triallylamine, cyanomethacrylate, vinyloxyethyl acrylate, methacrylate, formaldehyde, glycidaldehyde, compounds of the glycidyl ether type such as ethylene glycol diglycidyl ether, epoxides, or mixtures thereof, preferably the crosslinking agent comprises methylene bisacrylamide, ethylene glycol diacrylate, polyethylene glycol dimethacrylate, diacrylamide, triallylamine, or mixtures thereof.

10. The fabric conditioning composition according to any one of the preceding claims, wherein the concentration of the crosslinking agent is 100 to 300 ppm, preferably 150 to 250 ppm, based on the total monomer weight.

11. The fabric conditioning composition according to any one of the preceding claims, wherein the fabric softening active substance is a quaternary ammonium compound.

12. The fabric conditioning composition according to any one of the preceding claims, wherein the fabric softening active substance is an ester-linked quaternary ammonium compound.

13. The fabric conditioning composition according to any one of the preceding claims, wherein the copolymer is present in an amount of 0.001 to 5% by weight, preferably 0.005 to 3% by weight, of the composition.

14. The fabric conditioning composition according to any one of the preceding claims, wherein the fabric softening active substance is present in an amount of 1 to 40% by weight of the composition, preferably 2 to 30% by weight.

15. Use of the fabric conditioning composition according to any one of claims 1 to 14 in providing a softening benefit to the washed fabric during the washing process.

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