Laundry detergent composition comprising polyalkylene oxide graft copolymer and dye transfer inhibitor polymer

Abstract

A laundry detergent composition comprising a polyalkylene oxide graft copolymer and a dye transfer inhibitor (DTI) polymer.

Description

Technical Field

[0001] The present invention relates to a laundry detergent composition comprising a polyalkylene oxide graft copolymer and a dye transfer inhibitor (DTI) polymer. Background Art

[0002] Along with the development of detergent products, the demand of consumer in cleaning has been well met.Yet, in the field of laundry, there are still some other unsatisfied consumer demands.Specifically, one of the unsatisfied demands is to prevent the dye transfer in the colored textile during the wash cycle.When washing fabric, dye transfer can cause problems.For example, dyestuff from a part of fabric may be suspended in the washing liquid, then may be deposited on the different parts of fabric, or may be deposited on different fabrics completely.The transfer of this type of dyestuff (being called " easy to fade dyestuff ") can cause fabric to become gray, especially those light-colored or white fabrics.

[0003] Certain polymers, commonly referred to as dye transfer inhibitor ("DTI") polymers, have traditionally been used in laundry detergent compositions to address the dye transfer problem. Such polymers include polyvinylpyrrolidone (PVP), poly(vinylpyridine-N-oxide) (PVNO), polyvinylpyrrolidone-co-polyvinylimidazole (PVP / PVI), poly(vinylpyrrolidone)-co-poly(vinylpyridine-N-oxide) (PVP / PVNO) polymers. Several different graft copolymers, including polyalkylene oxides, N-vinylpyrrolidone and vinyl esters, have also been described that deliver less dye transfer. Traditional DTI polymers are effective in inhibiting the transfer of dyes.

[0004] However, the dye transfer inhibition achieved by detergent compositions comprising these actives is insufficient to meet consumer expectations.Therefore, there remains a need to provide laundry detergent compositions that are more effective in inhibiting dye transfer. Summary of the invention

[0005] The surprising and unexpected discovery of the present invention is that the combination of a polyalkylene oxide graft copolymer and a DTI polymer in a detergent formulation can deliver significantly improved dye transfer inhibition over when either the polyalkylene oxide graft copolymer or the DTI polymer is used alone.

[0006] Accordingly, the present invention relates in one aspect to a laundry detergent composition comprising:

[0007] 1) A polyalkylene oxide graft copolymer, the polyalkylene oxide graft copolymer comprising:

[0008] a) a polyalkylene oxide component as a graft base, and

[0009] b) a polyvinyl ester component as a side chain, and / or

[0010] c) polyvinylpyrrolidone as a side chain;

[0011] 2) dye transfer inhibitor (DTI) polymers;

[0012] The weight ratio of the polyalkylene oxide graft copolymer to the DTI polymer is 6.1:1 to 500:1.

[0013] In some embodiments according to the present application, the weight ratio of the polyalkylene oxide graft copolymer to the DTI polymer is 7:1 to 200:1, preferably 8:1 to 100:1, more preferably 10:1 to 80:1, most preferably 15:1 to 50:1, for example 15:1, 20:1, 25:1, 30:1, 35:1, 40:1, 45:1, 50:1 or any range therebetween.

[0014] In some embodiments according to the present application, the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, and b) a polyvinyl ester component as a side chain. Preferably, the side chain consists of the polyvinyl ester component.

[0015] In some embodiments according to the present application, the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, and c) polyvinyl pyrrolidone as a side chain. Preferably, the side chain consists of a polyvinyl pyrrolidone component.

[0016] In some embodiments according to the present application, the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, b) a polyvinyl ester component as a side chain, and c) polyvinyl pyrrolidone as a side chain.

[0017] In one embodiment according to the present application, the polyalkylene oxide component has a number average molecular weight of 1000 to 20,000 Daltons and is based on ethylene oxide, propylene oxide or butylene oxide.

[0018] In one embodiment according to the present application, the polyvinyl ester component is derived from a saturated monocarboxylic acid containing 1 to 6 carbon atoms and / or methyl or ethyl ester of acrylic acid or methacrylic acid.

[0019] In one embodiment according to the present application, the weight ratio of component a) to component b) is 1:0.1 to 1:0.99, preferably 1:0.3 to 1:0.9.

[0020] In one embodiment according to the present application, the weight ratio of component a) to component c) is 1:0.1 to 1:2, preferably 1:0.1 to 1:1, and more preferably 1:0.3 to 1:1.

[0021] In one embodiment according to the present application, the polyalkylene oxide graft copolymer has a weight average molecular weight of 4,000 Da to 100,000 Da, preferably 5,000 Da to 100,000 Da, more preferably 5,000 Da to 50,000 Da, most preferably 8,000 Da to 20,000 Da.

[0022] In one embodiment according to the present application, in the polyalkylene oxide graft copolymer, 1.0 mol % to 60 mol %, preferably 20 mol % to 60 mol %, more preferably 30 mol % to 50 mol % of the graft monomer of component (c) is hydrolyzed.

[0023] In one embodiment according to the present application, the polyalkylene oxide graft copolymer comprises side chains consisting of polyvinyl ester components.

[0024] In one embodiment according to the present application, the polyalkylene oxide graft copolymer has an average of greater than 0 to less than or equal to 1 grafting site per 50 alkylene oxide units.

[0025] In one embodiment according to the present application, the polyalkylene oxide graft copolymer has 20% to 70%, preferably 25% to 60% of the polyalkylene oxide component by weight of the polymer and 30% to 80%, preferably 40% to 75% of the vinyl ester component by weight of the polymer.

[0026] In one embodiment according to the present application, the polyalkylene oxide graft copolymer has an average molar mass Mw of 3,000 to 60,000, preferably 6,000 to 45,000.

[0027] In one embodiment according to the present application, the polyalkylene oxide graft copolymer has a polydispersity of less than or equal to 3.

[0028] In one embodiment according to the present application, the polyalkylene oxide graft copolymer comprises less than or equal to 10% by weight of polyvinyl ester in ungrafted form.

[0029] In one embodiment according to the present application, the DTI polymer is selected from: polyvinylpyrrolidone (PVP) polymer, polyamine N-oxide polymer, polyvinylimidazole (PVI) polymer, copolymer of N-vinylpyrrolidone and N-vinylimidazole (PVP / PVI), polyvinyloxazolidone polymer, poly(vinylpyridine-N-oxide) (PVNO) polymer, poly(vinylpyrrolidone) co-poly(vinylpyridine-N-oxide) (PVP / PVNO) polymer, and any mixture thereof. Preferably, the DTI polymer is a polyvinylpyrrolidone polymer, a polyvinylimidazole polymer, and / or a copolymer of N-vinylpyrrolidone and N-vinylimidazole.

[0030] In one embodiment according to the present application, the composition comprises:

[0031] From about 0.01% to about 15%, preferably from about 0.05% to about 10%, more preferably from about 0.1% to about 5%, and most preferably from about 0.2% to about 3%, by weight of the composition, of a polyalkylene oxide graft copolymer, and / or

[0032] From about 0.001% to about 1%, preferably from about 0.005% to about 0.5%, more preferably from about 0.008% to about 0.2%, and most preferably from about 0.01% to about 0.1%, by weight of the composition, of the DTI polymer.

[0033] In one embodiment according to the present application, the composition further comprises a processing aid, which is preferably selected from the group consisting of: surfactant systems, fatty acids and / or salts thereof, enzymes, encapsulated benefit agents, soil release polymers, hueing agents, builders, chelating agents, dye transfer inhibitors, dispersants, enzyme stabilizers, antioxidants, catalytic substances, bleaching agents, bleach catalysts, bleach activators, polymer dispersants, soil removal / anti-redeposition agents, polymer grease cleaners, amphiphilic copolymers, brighteners, foam suppressants, dyes, hueing agents, perfumes, structural elasticizers, fabric softeners, carriers, fillers, hydrotropes, solvents, antimicrobial agents and / or preservatives, neutralizers and / or pH adjusters, processing aids, rheology modifiers and / or structurants, opacifiers, pearlescent agents, pigments, corrosion inhibitors and / or rust inhibitors, and mixtures thereof.

[0034] In one embodiment according to the present application, the composition is in the form of a liquid composition, a granular composition, a single compartment pouch, a multi-compartment pouch, a sheet, a lozenge or a bead, a fiber product, a tablet, a bar, a flake or a mixture thereof.

[0035] In another aspect, the present application relates to a method of protecting the color of colored fabrics, the method comprising contacting the colored fabrics with a laundry detergent composition according to the present application.

[0036] In another aspect, the present application relates to the use of a laundry detergent composition according to the present application for improving color protection during laundry washing, preferably reducing dye fading and / or dye transfer to co-washed fabrics.

[0037] In one embodiment according to the present application, color protection is achieved by preventing dye transfer.

[0038] Laundry detergent compositions are advantageous in delivering effective dye transfer inhibition to colored fabrics. DETAILED DESCRIPTION

[0039] definition

[0040] As used herein, the articles including "a" and "an" when used in a claim should be understood to mean one or more of what is claimed or described.

[0041] As used herein, the terms "comprise", "include", and "contain" are not limited in meaning, that is, other steps and other ingredients that do not affect the results can be added. The above terms encompass the terms "consisting of" and "consisting essentially of".

[0042] As used herein, when a composition is "substantially free" of a particular ingredient, it means that the composition comprises less than trace amounts, alternatively less than 0.1%, alternatively less than 0.01%, alternatively less than 0.001% of the particular ingredient by weight of the composition.

[0043] As used herein, the term "laundry detergent composition" refers to a composition for cleaning contaminated materials, including fabrics. Such compositions can be used as laundry pre-treaters, laundry post-treaters, or can be added during the rinse cycle or wash cycle of a laundry washing operation. The laundry detergent composition can have a form selected from the following: liquid, powder, unit dose such as single compartment or multi-compartment unit dose, pouch, tablet, gel, paste, rod or sheet. Preferably, the laundry detergent composition is a liquid or unit dose composition. The term "liquid laundry detergent composition" refers to a composition in the following form in this article, and the form is selected from the group consisting of the following items: pourable liquid, gel, cream and their combination. The liquid laundry detergent composition can be aqueous or non-aqueous, and can be anisotropic, isotropic or their combination. The term "unit dose laundry detergent composition" refers to a water-soluble pouch comprising a certain volume of liquid in this article, and the liquid is wrapped by a water-soluble film.

[0044] As used herein, the term "alkyl" refers to a branched or unbranched, substituted or unsubstituted hydrocarbon moiety. Included within the term "alkyl" is the alkyl portion of an acyl group.

[0045] As used herein, the term "wash solution" refers to a typical amount of aqueous solution used for one laundry washing cycle, preferably 1 L to 50 L, or 1 L to 20 L for hand washing, and 20 L to 50 L for machine washing.

[0046] As used herein, the term "stained fabric" is used non-specifically and may refer to any type of fabric made of natural or man-made fibers, including natural fibers, man-made fibers, and synthetic fibers, such as but not limited to cotton, linen, wool, polyester, nylon, silk, acrylic, etc., as well as various blends and combinations.

[0047] Composition

[0048] The composition of the present disclosure may be selected from: a light-duty liquid detergent composition, a heavy-duty liquid detergent composition, a detergent gel commonly used for laundry washing, a bleaching composition, a laundry additive, a fabric enhancer composition, and mixtures thereof.

[0049] The composition may be in any suitable form. The composition may be in the form of a liquid composition, a granular composition, a single compartment pouch, a multi-compartment pouch, a sheet, a lozenge or a bead, a fiber product, a tablet, a bar, a flake, or a mixture thereof. The composition may be selected from liquid, solid, or a combination thereof.

[0050] The composition may be an aqueous liquid laundry detergent composition. For such an aqueous liquid laundry detergent composition, the water content may be present at a level of 5.0 wt % to 95 wt %, preferably 25 wt % to 90 wt %, more preferably 50 wt % to 85 wt % of the liquid detergent composition.

[0051] The pH range of the detergent composition may be preferably 6.0 to 8.9, more preferably pH 7 to 8.8.

[0052] The detergent composition may also be encapsulated in a water-soluble film to form a unit dose article. Such unit dose article comprises a detergent composition of the present invention, wherein the detergent composition comprises less than 20% by weight, preferably less than 15% by weight, more preferably less than 10% by weight of water, and the detergent composition is encapsulated in a water-soluble or water-dispersible film. Such unit dose article may be formed using any method known in the art. Suitable unit dose article may comprise a compartment, wherein the compartment comprises a liquid laundry detergent composition. Alternatively, the unit dose article may be a multi-compartment unit dose article, wherein at least one compartment comprises a liquid laundry detergent composition.

[0053] Polyalkylene oxide graft copolymer

[0054] The detergent composition may contain one or more polyalkylene oxide graft copolymers. The polyalkylene oxide graft copolymer may be present at a level of from about 0.01% to about 15%, preferably from about 0.05% to about 10%, more preferably from about 0.1% to about 5%, and most preferably from about 0.2% to about 3%, for example 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45%, 0.5%, 1%, 2% or 3%, by weight of the composition.

[0055] In a specific embodiment, the polyalkylene oxide graft copolymer is a graft polymer based on a water-soluble polyalkylene oxide (A) as a graft base and a side chain formed by polymerization of a vinyl ester component (B), wherein the polymer has an average molar mass (M) of 3000 to 100,000. w ), and wherein the polymer comprises: (A) 15 to 70 wt. %, preferably 20 to 70 wt. %, more preferably 25 to 60 wt. % of a water-soluble polyalkylene oxide as a graft base; and (B) side chains formed by free radical polymerization of 30 to 85 wt. %, preferably 30 to 80 wt. %, more preferably 40 to 75 wt. % of a vinyl ester component consisting of (B1) 70 to 100 wt. % of vinyl acetate and / or vinyl propionate and (B2) 0 to 30 wt. % of further ethylenically unsaturated monomers, wherein the full width at half maximum of the polarity distribution of the polymer is between 0.35 and 1.0:

[0056] The graft copolymer comprises (a) a polyalkylene oxide having a number average molecular weight of 1000Da to 20000Da or to 15000Da or to 12000Da or to 10000Da and based on ethylene oxide, propylene oxide or butylene oxide, preferably based on ethylene oxide, (b) a vinyl ester component; and / or the graft copolymer can be obtained by grafting (a) the polyalkylene oxide with (b) the vinyl ester component.

[0057] Water-soluble polyalkylene oxides suitable for forming the graft base (A) are in principle all polymers based on C2-C4-alkylene oxide which comprise at least 50% by weight, preferably at least 60% by weight, more preferably at least 75% by weight, of ethylene oxide in copolymerized form.

[0058] The polyalkylene oxide (A) preferably has a low polydispersity M w / Mn. Their polydispersity is preferably less than 1.5.

[0059] The polyalkylene oxides (A) may be the corresponding polyalkylene glycols in free form, ie with OH terminal groups, but they may also be capped at one or both terminal groups. Suitable terminal groups are, for example, C1-C 25 -alkyl, phenyl and C1-C 14 - alkylphenyl group. Specific examples of particularly suitable polyalkylene oxides (A) include:

[0060] (A1) polyethylene glycol, which may be capped at one or both end groups, in particular C1-C 25 - alkyl group terminated, but preferably not etherified, and having preferably 1500 to 20,000,

[0061] More preferably, the average molar mass M is from 2500 to 15,000 n ;

[0062] (A2) copolymers of ethylene oxide with propylene oxide and / or butylene oxide, having an ethylene oxide content of at least 50% by weight, which may likewise be terminated at one or both end groups, in particular C1-C 25 -alkyl groups terminated, but preferably not etherified, and having an average molar mass M preferably from 1500 to 20,000, more preferably from 2500 to 15,000 n ;

[0063] (A3) chain extension products having an average molar mass of, in particular, 2500 to 20,000, which can be obtained by making the average molar mass M n A polyethylene glycol (A1) having an average molar mass M of 200 to 5000 n The copolymer (A2) having a molecular weight of 200 to 5000 and C2-C 12 -dicarboxylic acid or -dicarboxylic acid ester or C6-

[0064] C 18 - obtained by reaction of diisocyanate.

[0065] A preferred graft base (A) is polyethylene glycol (A1).

[0066] The polyalkylene oxide backbone of the graft copolymer of the present invention (which is also referred to herein as the graft base) may comprise C2-C 10 , preferably C2-C6, and more preferably C2-C4 alkylene oxide repeating units. For example, the polyalkylene oxide backbone can be: a polyethylene oxide (PEO) backbone; a polypropylene oxide (PPO) backbone; a polybutylene oxide (PBO) backbone; a polymer backbone that is a linear block copolymer of PEO, PPO and / or PBO; and combinations thereof. Preferably, the polyalkylene oxide backbone is a PEO backbone. Such polyalkylene oxide backbones preferably have a number average molecular weight (M) of about 1,000 g / mol to about 20,000 g / mol, preferably about 2,000 g / mol to about 15,000 g / mol, more preferably about 3,000 g / mol to about 13,000 g / mol, and most preferably about 5,000 g / mol to about 10,000 g / mol. n ).

[0067] One or more side chains of the graft copolymer of the present invention are formed by polymerization of a vinyl ester component in the presence of a graft base. Suitable vinyl ester components may be selected from C2-C 10Vinyl ester, preferably C2-C6 vinyl ester, and more preferably C2-C4 vinyl carboxylate. For example, one or more side chains can be selected from polyvinyl acetate, polyvinyl propionate, polyvinyl butyrate and their combination, while polyvinyl acetate is preferred. Side chains can also be formed by copolymerizing vinyl acetate and / or vinyl propionate with other ethylenically unsaturated monomers (for example, methyl acrylate, ethyl acrylate and n-butyl acrylate). The fraction of such other ethylenically unsaturated monomers in the total content of the vinyl ester component can be up to 30 weight %. The polyvinyl ester side chains can also be partially saponified to a degree of, for example, up to 15%.

[0068] Such side chains may be present in an amount ranging from about 30% to about 85%, preferably from about 40% to about 75%, based on the total weight of the graft copolymer.

[0069] The graft copolymer of the present invention may have an overall weight average molecular weight (M) of about 3,000 to about 100,000, preferably about 10,000 to about 50,000, and more preferably about 20,000 to about 40,000. w ).

[0070] The graft copolymer of the present invention can also be characterized by a polydispersity M w / M n The polydispersity M is typically ≤ about 3, preferably ≤ about 2.8, more preferably ≤ about 2.5, and even more preferably ≤ about 2.3. Most preferably, their polydispersity M is w / M n In the range of about 1.5 to about 2.2.

[0071] The vinyl ester component (B) may advantageously consist of (B1) vinyl acetate or vinyl propionate or a mixture of vinyl acetate and vinyl propionate, with vinyl acetate being particularly preferred as the vinyl ester component (B).

[0072] However, the side chains of the graft polymer can also be formed by copolymerizing vinyl acetate and / or vinyl propionate (B1) with further ethylenically unsaturated monomers (B2). The fraction of monomer (B2) in the vinyl ester component (B) can be up to 30% by weight, which corresponds to a content of (B2) in the graft polymer of 24% by weight. Suitable comonomers (B2) are, for example, monoethylenically unsaturated carboxylic acids and dicarboxylic acids and their derivatives, such as esters, amides and anhydrides, and styrene. Of course, mixtures of different comonomers can also be used. Specific examples include: (meth)acrylic acid, C1-C2 (meth)acrylic acid. 12 -alkyl esters and hydroxy-C2-C 12 -alkyl esters, (meth)acrylamide, N-C1-C 12-alkyl (meth) acrylamide, N,N-di (C1-C6-alkyl) (meth) acrylamide, maleic acid, maleic anhydride and mono (C1-C6-alkyl) 12 -alkyl) esters.

[0073] In a specific embodiment, the polyalkylene oxide graft copolymer comprises: (a) polyalkylene oxide having a number average molecular weight of 1000 to 20,000 daltons and based on ethylene oxide, propylene oxide and / or butylene oxide, (b) a polyvinyl ester component as a side chain, and (c) a polyvinyl pyrrolidone as a side chain. Specifically, the vinyl ester component is derived from a saturated monocarboxylic acid containing 1 to 6 carbon atoms.

[0074] Suitable polyalkylene oxide can be based on homopolymer or copolymer, wherein homopolymer is preferred. Suitable polyalkylene oxide can be based on ethylene oxide homopolymer or ethylene oxide copolymer with 40 mol % to 99 mol % ethylene oxide content. Comonomers suitable for such copolymers can include propylene oxide, n-butylene oxide and / or isobutylene oxide. Suitable copolymers can include copolymers of ethylene oxide and propylene oxide, copolymers of ethylene oxide and butylene oxide and / or copolymers of ethylene oxide, propylene oxide and at least one butylene oxide. Copolymers can include 40 mol % to 99 mol % ethylene oxide content, 1.0 mol % to 60 mol % propylene oxide content and 1.0 mol % to 30 mol % butylene oxide content. The graft base can be linear (straight chain) or branched, such as branched homopolymers and / or branched copolymers.

[0075] Branched copolymers can be prepared by adding ethylene oxide with or without propylene oxide and / or butylene oxide to polyhydric low molecular weight alcohols such as trimethylolpropane, pentoses or hexoses.

[0076] The alkylene oxide units may be randomly distributed in the polymer or may be present therein as blocks.

[0077] The polyalkylene oxides of component (a) may be the corresponding polyalkylene glycols in free form, i.e. with OH end groups, or they may be capped at one or both end groups. Suitable end groups may be, for example, C1-C25-alkyl, phenyl and C1-C14-alkylphenyl groups. The end groups may be C1-alkyl (e.g. methyl) groups. Suitable materials for the graft base may include PEG 1000, PEG 2000, PEG 4000, PEG 6000, PEG 8000, PEG 10000, PEG 12000 and / or PEG 20000 (which are polyethylene glycols), and / or MPEG 2000, MPEG 4000, MPEG 6000, MPEG 8000 and MEG 10000 (which are monomethoxy polyethylene glycols commercially available from BASF under the trade name PLURIOL, and / or block copolymers made of ethylene oxide-propylene oxide-ethylene oxide (EO-PO-EO) or propylene oxide-ethylene oxide-propylene oxide (PO-EO-PO) such as PE 6100, PE 6800 or PE 3100 commercially available from BASF under the trade name PLURONIC).

[0078] The polyalkylene oxide can be grafted with N-vinyl pyrrolidone as the monomer of component (b). Without being bound by theory, it is believed that the presence of N-vinyl pyrrolidone monomer in the graft copolymer according to the present disclosure provides water solubility and good film-forming properties compared to other similar polymers that do not contain N-vinyl pyrrolidone ("VP") monomer. The vinyl pyrrolidone repeating unit has an amphiphilic character with polar amide groups that can form dipoles, and non-polar parts with methylene groups in the main chain and rings, making it hydrophobic.

[0079] The polyalkylene oxide may be grafted with vinyl esters as monomers of component (c). The vinyl esters may be derived from saturated monocarboxylic acids which may contain 1 to 6 carbon atoms, or 1 to 3 carbon atoms, or 1 to 2 carbon atoms, or 1 carbon atom. Suitable vinyl esters may be selected from the group consisting of vinyl formate, vinyl acetate, vinyl propionate, vinyl butyrate, vinyl valerate, vinyl isovalerate, vinyl caproate or mixtures thereof. Preferred monomers of component (c) include those selected from vinyl acetate, vinyl propionate or mixtures thereof, preferably vinyl acetate.

[0080] Conventionally, the molecular weight is indicated by its "K value", which is derived from relative viscosity measurements. The K value of the graft copolymers can be from 5.0 to 200, optionally from 5.0 to 50, determined according to H. Fikentscher in 2% strength by weight solution in dimethylformamide at 25°C.

[0081] Particularly preferred graft copolymers of the present invention have a polyethylene oxide backbone grafted with one or more polyvinyl acetate side chains. More preferably, the weight ratio of the polyethylene oxide backbone to the polyvinyl acetate side chains is in the range of about 1:0.2 to about 1:10, or about 1:0.5 to about 1:6, and most preferably about 1:1 to about 1:5. An example of such a preferred amphiphilic graft copolymer is Sokalan TM HP22 polymer, which is commercially available from BASF Corporation. The polymer has a polyethylene oxide backbone with polyvinyl acetate side chains grafted thereto. The number average molecular weight (Mn) of the polyethylene oxide backbone of the polymer is about 6,000 g / mol (equivalent to about 136 ethylene oxide units), and the weight ratio of the polyethylene oxide backbone to the polyvinyl acetate side chains is about 1:3. The number average molecular weight (Mn) of the polymer itself is about 24,000 g / mol.

[0082] Dye transfer inhibitors

[0083] The detergent composition comprises one or more dye transfer inhibitor (DTI) polymers. The DTI polymer may be present in an amount of about 0.001% to about 1%, preferably about 0.005% to about 0.5%, more preferably about 0.008% to about 0.2%, and most preferably about 0.01% to about 0.1%, for example 0.01%, 0.015%, 0.02%, 0.025%, 0.03%, 0.035%, 0.04%, 0.05%, 0.06%, 0.07%, 0.08%, 0.1% or any range therebetween, by weight of the composition.

[0084] Suitable dye transfer inhibitors are selected from the group consisting of polyvinylpyrrolidone (PVP) polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole (PVP / PVI), polyvinyloxazolidones, copolymers of vinylpyrrolidone and vinyl acetate (PVP / VA), polyvinylimidazole (PVI) and mixtures thereof. Other suitable DTIs are triazines as described in WO2012 / 095354, polymeric benzoxazines as described in WO2010 / 130624, polyethylene tetrazoles as described in DE102009001144A, porous polyamide particles as described in WO2009 / 127587, and insoluble polymer particles as described in WO2009 / 124908. Other suitable DTIs are described in WO 2012 / 004134 or in polymers selected from the group consisting of: (a) amphiphilic alkoxylated polyamines, amphiphilic graft copolymers, zwitterionic soil suspension polymers, manganese phthalocyanine, peroxidases and mixtures thereof.

[0085] Preferred DTI classes include, but are not limited to, polyvinylpyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinyloxazolidones, polyvinylimidazoles, and mixtures thereof. More specifically, polyamine N-oxide polymers preferably used herein contain units having the following formula: R-AX-P; wherein P is a polymerizable unit to which the NO group may be attached, or the NO group may form part of the polymerizable unit, or the NO group may be attached to both units; A is one of the following structures: -NC(O)-, -C(O)O-, -S-, -O-, -N=; x is 0 or 1; and R is an aliphatic, ethoxylated aliphatic, aromatic, heterocyclic or alicyclic group, or any combination thereof, to which the nitrogen of the NO group may be attached, or to which the NO group is part. Preferred polyamine N-oxides are those wherein R is a heterocyclic group such as pyrridine, pyrrole, imidazole, pyrrolidine, piperidine, and derivatives thereof.

[0086] The NO group can be represented by the following general structure:

[0087]

[0088] wherein R1, R2, R3 are aliphatic, aromatic, heterocyclic or alicyclic groups or combinations thereof; x, y and z are 0 or 1; and the nitrogen of the NO group may be attached to or form part of any of the aforementioned groups. The amine oxide unit of the polyamine N-oxide has a pKa<10, preferably pKa<7, more preferably pKa<6.

[0089] As long as the amine oxide polymer formed is water-soluble and has dye transfer inhibition characteristics, any polymer backbone can be used. The example of a suitable polymer backbone is polyvinyl, polyalkylene, polyester, polyether, polyamide, polyimide, polyacrylate and their mixture. These polymers include random or block copolymers, wherein a monomer type is amine N-oxide, and another monomer type is N-oxide. Amine N-oxide polymers have a ratio of amine to amine N-oxide of 10:1 to 1:1,000,000 conventionally. However, the number of amine oxide groups present in the polyamine oxide polymer can be changed by suitable copolymerization or by suitable N-oxidation degree. Polyamine oxides can obtain almost any degree of polymerization.

[0090] Typically, the average molecular weight is in the range of 500 to 1,000,000; more preferably 1,000 to 500,000; most preferably 5,000 to 100,000. This preferred class of materials may be referred to as "PVNO". The most preferred polyamine N-oxide for use in the detergent compositions herein is poly(4-vinylpyridine-N-oxide) having an average molecular weight of about 50,000 and a ratio of amine to amine N-oxide of about 1:4.

[0091] Copolymers of N-vinylpyrrolidone and N-vinylimidazole polymers (referred to as the "PVPVI" category) are also preferably used herein. Preferably, PVPVI has an average molecular weight of 5,000 to 1,000,000, more preferably 5,000 to 200,000, and most preferably 10,000 to 20,000. (The average molecular weight range is determined by light scattering, as described in: Barth et al., Chemical Analysis, Vol. 113, "Modem Methods of Polymer Characterization"). PVPVI copolymers typically have a molar ratio of N-vinylimidazole to N-vinylpyrrolidone of 1:1 to 0.2:1, more preferably 0.8:1 to 0.3:1, and most preferably 0.6:1 to 0.4:1.

[0092] These copolymers may be linear or branched.

[0093] The compositions of the present invention may also employ polyvinylpyrrolidone ("PVP") having an average molecular weight of about 5,000 to about 400,000, preferably about 5,000 to about 200,000, and more preferably about 5,000 to about 50,000. PVP is known to those skilled in the art of detergents; see, for example, EP-A-262,897 and EP-A-256,696, which are incorporated herein by reference. Compositions containing PVP may also contain polyethylene glycol ("PEG") having an average molecular weight of about 500 to about 100,000, preferably about 1,000 to about 10,000. Preferably, the ratio of PEG to PVP delivered in the wash solution on a ppm basis is from about 2:1 to about 50:1, and more preferably from about 3:1 to about 10:1.

[0094] Suitable examples include PVP-K15, PVP-K30, ChromaBond S-400, ChromaBond S-403E, and Chromabond S-100 from Ashland, and ChromaBond S-100 from BASF. HP165, HP50, HP53, HP59, HP 56K, HP 66; Reilline 4140 from Vertellus.

[0095] Surfactant system

[0096] Preferably, the composition comprises 4% to 80%, preferably 6% to 50%, more preferably 10% to 30%, for example, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50% or any range therebetween of the surfactant system by weight of the composition. Specifically, the surfactant system may comprise anionic surfactants and nonionic surfactants.

[0097] Anionic surfactants suitable for use in the compositions of the present invention may be selected from C6-C 20 Linear alkylbenzene sulfonate (LAS), C6-C 20 Alkyl sulfate (AS), C6-C 20 Alkyl alkoxy sulfate (AAS), C6-C 20 Methyl ester sulfonate (MES), C6-C 20 Alkyl ether carboxylates (AEC), and any combination thereof. For example, the laundry detergent composition may contain C6-C 20 Alkyl alkoxy sulfate (AA x S), wherein x is about 1-30, preferably about 1-15, more preferably about 1-10, and most preferably x is about 1-3. x The alkyl chain in S can be straight or branched, with mid-chain branched AA x S surfactants are particularly preferred. Preferred AA x The S group includes C with x being about 1-3 12 -C 14 Alkyl alkoxy sulfate. In some embodiments, the composition comprises from 1% to 30%, preferably from 2% to 25%, more preferably from 3% to 20%, for example 4%, 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20% or any range therebetween, by weight of the composition of an anionic surfactant.

[0098] The nonionic surfactant suitable for use in the composition of the present invention can be selected from alkyl alkoxylated alcohols, alkyl alkoxylated phenols, alkyl polysaccharides, polyhydroxy fatty acid amides, alkoxylated fatty acid esters, sucrose esters, sorbitan esters and alkoxylated derivatives of sorbitan esters, and any combination thereof. Non-limiting examples of nonionic surfactants suitable for use herein include: C 12 -C 18Alkyl ethoxylates, such as those available from Shell Nonionic surfactant; C6-C 12 Alkylphenol alkoxylates, wherein the alkoxylate units are a mixture of ethyleneoxy and propyleneoxy units; C 12 -C 18 Alcohol and C6-C 12 Condensates of alkylphenols with ethylene oxide / propylene oxide block alkylpolyamine ethoxylates, such as those available from BASF C 14 -C 22 mid-chain branched alkyl alkoxylates, BAEx, wherein x is from about 1 to about 30; alkyl polysaccharides, specifically alkyl polyglycosides; polyhydroxy fatty acid amides; and ether-terminated poly(alkoxylated) alcohol surfactants. Also useful as nonionic surfactants herein are alkoxylated ester surfactants, such as those having the formula R 1 C(O)O(R2O)nR 3 Those, among which R 1 Selected from linear or branched C6-C 22 Alkyl or alkylene moiety; R 2 is selected from the moieties C2H4 and C3H6, and R 3 wherein n is selected from the group consisting of H, CH3, C2H5 and C3H7 moieties; and n has a value between about 1 and about 20. Such alkoxylated ester surfactants include aliphatic methyl ester ethoxylates (MEE) and are well known in the art. In some specific embodiments, the alkoxylated nonionic surfactants included in the laundry detergent compositions of the present invention are C6-C 20 Alkoxylated alcohol, preferably C8-C 18 Alkoxylated alcohols, more preferably C 10 -C 16 Alkoxylated alcohols. C6-C 20 The alkoxylated alcohol is preferably an alkyl alkoxylated alcohol having an average degree of alkoxylation of from about 1 to about 50, preferably from about 3 to about 30, more preferably from about 5 to about 20, even more preferably from about 5 to about 9. In some embodiments, the composition comprises from 1% to 30%, preferably from 2% to 25%, more preferably from 3% to 20%, for example 4%, 5%, 6%, 7%, 8%, 9%, 10%, 12%, 14%, 16%, 18%, 20% or any range therebetween, by weight of the composition of a nonionic surfactant.

[0099] The ratio of anionic surfactant to nonionic surfactant may be between 0.01 and 100, preferably between 0.05 and 20, more preferably between 0.1 and 10, and most preferably between 0.2 and 5.

[0100] In some embodiments, the anionic surfactant includes C6-C 20 Linear alkylbenzene sulfonate surfactant (LAS), preferably C 10 -C 16 LAS, and more preferably C 12 -C 14 LAS.

[0101] In some specific embodiments of the present invention, anionic surfactants may be present in the composition as the main surfactant, preferably as the primary surfactant. Preferably, the ratio of anionic surfactant to nonionic surfactant may be between 1.05 and 100, preferably between 1.1 and 20, more preferably between 1.2 and 10, and most preferably between 1.3 and 5. Specifically, anionic surfactants may include C6-C 20 Linear alkylbenzene sulfonate (LAS).

[0102] In some specific embodiments of the present invention, nonionic surfactants may be present in the composition as the main surfactant, preferably as the primary surfactant. Preferably, the ratio of anionic surfactant to nonionic surfactant may be between 0.01 and 0.95, preferably between 0.05 and 0.9, more preferably between 0.1 and 0.85, and most preferably between 0.2 and 0.8. Specifically, the nonionic surfactant may include C6-C 20 Alkoxylated alcohols.

[0103] The laundry detergent composition of the present invention may also contain a cationic surfactant. Non-limiting examples of cationic surfactants include: quaternary ammonium surfactants, which may have up to 26 carbon atoms, including: alkoxylated quaternary ammonium (AQA) surfactants; dimethyl hydroxyethyl quaternary ammonium; dimethyl hydroxyethyl lauryl ammonium chloride; polyamine cationic surfactants; and amino surfactants, specifically amidopropyl dimethylamine (APA).

[0104] The laundry detergent composition of the present invention may also contain an amphoteric surfactant. Non-limiting examples of amphoteric surfactants include: amine oxides, derivatives of secondary and tertiary amines, derivatives of heterocyclic secondary and tertiary amines, or derivatives of quaternary ammonium, quaternary phosphonium or tertiary sulfonium compounds. Preferred examples include: C6-C 20 Alkyl dimethylamine oxides, betaines, including alkyl dimethyl betaine and cocodimethylamidopropyl betaine, sulfo- and hydroxybetaines, such as N-alkyl-N,N-dimethylamino-1-propane sulfonate, in which the alkyl group can be C8-C 18 or C 10 -C 14 .

[0105] Other Ingredients

[0106] Laundry detergent compositions according to the present disclosure may also comprise from 0.01% to 10%, preferably from 0.1% to 5%, more preferably from 0.2% to 3%, most preferably from 0.3% to 2% by weight of the composition of a surfactant boosting polymer.

[0107] The laundry detergent composition of the present invention may also contain a cationic surfactant. Non-limiting examples of cationic surfactants include: quaternary ammonium surfactants, which may have up to 26 carbon atoms, including: alkoxylated quaternary ammonium (AQA) surfactants; dimethyl hydroxyethyl quaternary ammonium; dimethyl hydroxyethyl lauryl ammonium chloride; polyamine cationic surfactants; and amino surfactants, specifically amidopropyl dimethylamine (APA).

[0108] The laundry detergent compositions herein may contain auxiliary ingredients. Suitable auxiliary materials include, but are not limited to, builders, chelating agents, rheology modifiers, dye transfer inhibitors, dispersants, enzymes and enzyme stabilizers, antioxidants, catalytic substances, bleach activators, hydrogen peroxide, hydrogen peroxide sources, preformed peracids, polymeric dispersants, clay soil removal / anti-redeposition agents, brighteners, foam suppressors, dyes, photobleaches, spices, spice microcapsules, structural elasticizers, fabric softeners, carriers, hydrotropes, processing aids, solvents, toners, structurants and / or pigments. The exact nature of these auxiliary ingredients and their content in the laundry detergent compositions will depend on the physical form of the composition and the nature of the cleaning operation performed using it.

[0109] In some embodiments, laundry detergent compositions according to the present disclosure may also comprise from 0.01% to 10%, preferably from 0.1% to 5%, more preferably from 0.2% to 4%, most preferably from 0.3% to 3%, for example 0.5%, 1%, 2%, 3%, 4%, 5% or any range thereof, of fatty acid by weight of the composition.

[0110] Composition preparation

[0111] The laundry detergent compositions of the present invention are generally prepared by conventional methods, such as methods for preparing laundry detergent compositions known in the art. Such methods generally involve mixing the essential ingredients and optional ingredients in any desired order to a relatively uniform state, with or without heating, cooling, application of vacuum, etc., to provide a laundry detergent composition containing the ingredients in the necessary concentrations.

[0112] How to use

[0113] Another aspect of the present invention relates to a method for treating fabrics using a laundry detergent composition. Such methods can deliver color protection benefits. The method comprises the step of applying 5g to 120g of the above-mentioned laundry detergent composition to a laundry washing basin containing water to form a washing solution. The washing solution in the laundry washing basin herein preferably has a volume of 1L to 65L, or 1L to 20L for hand washing, and a volume of 10L to 65L for machine washing. The temperature of the laundry washing solution is preferably in the range of 5°C to 60°C.

[0114] In some embodiments, the composition is added to a washing machine via a dispenser (e.g., a dosing drawer). In some other embodiments, the composition is added to an automatic dosing washing machine via an automatic dosing mechanism. In some other embodiments, the composition is added directly to the drum of a washing machine. In some other embodiments, the composition is added directly to the wash liquor.

[0115] The dosage in the method herein may vary according to the type of washing. In one embodiment, the method comprises applying from about 5 g to about 60 g of a laundry detergent composition to a wash basin (e.g., about 2L-4L). In an alternative embodiment, the method comprises applying from about 5 g to about 100 g, preferably from about 10 g to about 65 g of a laundry detergent composition to a washing machine (e.g., about 10L-45L).

[0116] Test Method

[0117] Test 1: Dye transfer test

[0118] The dye transfer test was performed using a Tergotometer (model: RHLQ1V, obtained from Research Institute of Daily Chemical Industry (RIDCI)) as follows:

[0119] Dye source: Direct red dye FR-33 (Sundat Dye Stuffs, Xinhui, Guangzhou, China)

[0120] Dye content: 2.5ppm (as in washing solution)

[0121] HDL dose: 2 g

[0122] Water capacity: 1000ml

[0123] Water type: RO water

[0124] HDL concentration: 2000ppm

[0125] Hardness: 15gpg GC NS hardness (Ca / Mg=3 / 2)

[0126] Temperature: 40℃

[0127] White fabric tracer: 10 cm x 10 cm whitener-free CW98 (100% thick cotton, purchased from Danxin Textile Co. Beijing, China), 6 pieces, which were pre-stripped 6 times with Chinese national standard powdered detergent (obtained from Taiyuan, China) in DI water

[0128] The L*ab of the white tracer was measured prior to washing according to the dye transfer method below.

[0129] 1. Add ~990ml RO water and corresponding hardness. (Note: After adding HDL and dye solution, the total volume should be 1000mL.)

[0130] 2. Wait for the temperature to heat up to 40℃.

[0131] 3. Add HDL and dissolve for 3 minutes.

[0132] 4. Place it in the white tracer and stir for 3 minutes.

[0133] 5. Start agitation (main wash) and add dye solution.

[0134] 6. The main washing time is 2 minutes.

[0135] 7. After the main wash is completed, pour all the pieces of fabric into a basin filled with city water for rinsing.

[0136] 8. Use tweezers to grasp one corner of the fabric, making sure both the fabric and the tweezers are under the water, and rinse 10 times with quick wrist movements (forward + backward = 1 rinse).

[0137] 9. Switch to another corner of the fabric and rinse 10 times.

[0138] 10. Remove the fabric from the rinse container and squeeze dry.

[0139] 11, the L*ab of the tracer washed with detergent and dye solution was measured by using IA measurement and ΔE was calculated.

[0140] Example

[0141] Synthesis Example 1: Synthesis of polyalkylene oxide graft copolymer

[0142] A polyalkylene oxide grafted polymer having a weight average molecular weight of 16,800 Daltons was prepared as follows, which was PVP / PVAc-g-PEG at a weight ratio of 20:30:50.

[0143] Under nitrogen atmosphere, 720 g of PEG (6000 g / mol) and 60 g of 1,2-propylene glycol (MPG) were initially added to a polymerization vessel equipped with a stirrer and a reflux condenser. The mixture was homogenized at 70°C.

[0144] Then 432 g of vinyl acetate (over 2 h), a solution of 288 g of vinylpyrrolidone in 576 g of MPG (over 5 h) and a solution of 30.2 g of tert-butyl perpivalate in 196.6 g of MPG (over 5.5 h) were metered in. After the additions were complete, the solution was stirred at 70° C. for 1 h. Then a solution of 3.8 g of tert-butyl perpivalate in 25.0 g of MPG (over 1.5 h) was metered in, followed by stirring for 0.5 h.

[0145] The volatiles were removed by vacuum stripping. Then, 676.8 g of deionized water were added and steam distillation was performed at 100°C for 1 hour.

[0146] The temperature of the reaction mixture was lowered to 80°C and 160.6 g of aqueous sodium hydroxide solution (50%, 40 mol % corresponding VAc) were added at maximum feed rate. After complete addition of the sodium hydroxide solution, the mixture was stirred at 80°C for 1 hour and then cooled to ambient temperature.

[0147] The resulting polyalkylene oxide grafted polymer was characterized by a K value of 24. The solids content of the final solution was 45%.

[0148] Example 1: Polyalkylene oxide graft copolymer and DTI polymer in laundry detergent composition for dye transfer Synergistic effect of migration inhibition

[0149] Four (4) sample liquid laundry detergent compositions were prepared containing the following ingredients. Comparative Sample 1 contained no polyalkylene oxide graft copolymer or DTI polymer. Comparative Sample 2 contained DTI polymer and Comparative Sample 3 contained polyalkylene oxide graft copolymer. Inventive Sample 1 contained both polyalkylene oxide graft copolymer and DTI polymer.

[0150] Table 1

[0151]

[0152] 1 Polyalkylene oxide graft copolymer A: a polyvinyl acetate grafted polyethylene oxide copolymer having a polyethylene oxide main chain and multiple polyvinyl acetate side chains, which is supplied by BASF, Germany

[0153] 2 DTI polymer, poly(1-vinylpyrrolidone-co-1-vinylimidazole), which can HP 56K is commercially available from BASF

[0154] The ΔE of these samples was measured according to Test 1 (the dye transfer test described above). A higher ΔE indicates worse dye transfer, while a lower ΔE indicates less dye transfer, with a more negative difference corresponding to more effective dye transfer inhibition.

[0155] The results shown in Table 2 below, where the colored fabric was washed with a white fabric tracer, show significant dye transfer with a ΔE of 19.0 after washing using Comparative Sample 1 without the polyalkylene oxide graft copolymer and the DTI polymer. When the fabric was washed with Comparative Sample 2 containing the graft copolymer, the washed fabric had 3.3 units less dye transfer compared to Comparative Sample 1. Fabric washed with Comparative Sample 3 containing the DTI polymer had 0.9 units less dye transfer compared to Comparative Sample 1. Unexpectedly, Sample 1 of the present invention, which contains both the polyalkylene oxide graft copolymer and the DTI polymer, showed surprisingly superior performance of 7.1 units less dye transfer compared to Comparative Samples 2 and 3. This data indicates a synergistic effect between the polyalkylene oxide graft copolymer and the DTI polymer, as the improvement in dye transfer inhibition is greater than the sum of Comparative Samples 2 and 3 when washed separately (3.3+0.9=4.2). When the polyalkylene oxide graft copolymer and DTI polymer were combined, the washed fabric had 7.1 units less dye transfer, which is an improvement of 2.9 units compared to when either the graft copolymer or the DTI polymer was used alone.

[0156] Table 2

[0157]

[0158] Example 2: Targeted dyeing between another polyalkylene oxide graft copolymer and DTI polymer in a laundry detergent composition Synergistic Effect of Material Transfer Inhibition

[0159] Four (4) sample liquid laundry detergent compositions were prepared containing the following ingredients. Comparative Sample 4 contained no polyalkylene oxide graft copolymer or DTI polymer, and Comparative Sample 5 contained DTI polymer. Comparative Sample 6 contained another polyalkylene oxide graft copolymer, but no DTI polymer. Inventive Sample 2 contained the graft copolymer in Comparative Sample 6 and a DTI polymer.

[0160] Table 3

[0161]

[0162] 1 Polyalkylene oxide graft copolymer B: The graft copolymer described in Synthesis Example 1, having a weight ratio of PVP / PVAc-g-PEG at a ratio of 20:30:50, and a weight average molecular weight of 16,800 Daltons

[0163] 2DTI polymer, poly(1-vinylpyrrolidone-co-1-vinylimidazole), which can HP 56K is commercially available from BASF

[0164] The ΔE of these samples was measured according to Test 1 (the dye transfer test described above). A higher ΔE indicates worse dye transfer, while a lower ΔE indicates less dye transfer, with a more negative difference corresponding to more effective dye transfer inhibition.

[0165] The results shown in Table 4 below, where the colored fabric was washed with a white fabric tracer, show significant dye transfer with a ΔE of 16.8 after washing using Comparative Sample 4 without the polyalkylene oxide graft copolymer and the DTI polymer. When the fabric was washed with Comparative Sample 5 containing the graft copolymer, the washed fabric had 7.3 units less dye transfer compared to Comparative Sample 4. The fabric washed with Comparative Sample 6 containing the DTI polymer had 2.6 units less dye transfer compared to Comparative Sample 4. Unexpectedly, Sample 2 of the present invention, which contains both the polyalkylene oxide graft copolymer and the DTI polymer, showed surprisingly superior performance of 14.3 units less dye transfer compared to Comparative Samples 5 and 6. This data indicates a synergistic effect between the polyalkylene oxide graft copolymer and the DTI polymer, as the improvement in dye transfer inhibition is greater than the sum of Comparative Samples 5 and 6 when washed separately (7.3+2.6=9.9). When the polyalkylene oxide graft copolymer and DTI polymer were combined, the washed fabric had 14.3 units less dye transfer, which is an improvement of 4.4 units compared to when either the graft copolymer or the DTI polymer was used alone.

[0166] Table 4

[0167]

[0168] Example 3: Exemplary Adjustment of Laundry Detergent Compositions Containing Polyalkylene Oxide Graft Copolymers and DTI Polymers accessories

[0169] The following liquid laundry detergent compositions shown in Table 5 and Table 6 were prepared containing the listed ingredients in the listed proportions (wt %).

[0170] Table 5

[0171]

[0172] 1 Polyvinyl acetate grafted polyethylene oxide copolymer having a polyethylene oxide main chain and multiple polyvinyl acetate side chains, supplied by BASF, Germany.

[0173] 2DTI polymer, poly(1-vinylpyrrolidone-co-1-vinylimidazole), which can HP 56K is commercially available from BASF

[0174] Table 6

[0175]

[0176] 1 Polyvinyl acetate grafted polyethylene oxide copolymer having a polyethylene oxide main chain and multiple polyvinyl acetate side chains, supplied by BASF, Germany.

[0177] 2DTI polymer, poly(1-vinylpyrrolidone-co-1-vinylimidazole), which can HP 56K is commercially available from BASF

[0178] Example 4: Unit Dose Laundry Detergent Compositions Comprising Polyalkylene Oxide Graft Copolymers and DTI Polymers Exemplary Formulations

[0179] Exemplary formulations for unit dose laundry detergents were prepared as shown in Table 7. These compositions were encapsulated in unit dose compartments by using polyvinyl alcohol based films.

[0180] Table 7

[0181]

[0182] 1 The graft copolymer described in Synthesis Example 1 having PVP / PVAc-g-PEG at a ratio of 20:30:50 and a MW of 16,800 Daltons.

[0183] 2 Polyvinyl acetate grafted polyethylene oxide copolymer having a polyethylene oxide main chain and multiple polyvinyl acetate side chains, supplied by BASF, Germany.

[0184] 3 DTI polymer, poly(1-vinylpyrrolidone-co-1-vinylimidazole), which can HP 56K is commercially available from BASF

[0185] The dimensions and values ​​disclosed herein should not be understood as being strictly limited to the exact numerical values ​​cited. Instead, unless otherwise indicated, each such dimension is intended to represent the stated value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

[0186] Unless expressly excluded or otherwise limited, each document cited herein, including any cross-referenced or related patent or patent application and any patent application or patent to which this application claims priority or the benefit of, is hereby incorporated by reference in its entirety. The citation of any document is not an admission that it is prior art to any of the present invention disclosed or claimed herein, or an admission that it, by itself or in combination with any one or more of the references, proposes, suggests, or discloses any such invention. In addition, to the extent that any meaning or definition of a term in this invention conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this invention shall govern.

[0187] Although specific embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various other changes and modifications may be made without departing from the spirit and scope of the present invention. Therefore, it is intended that all such changes and modifications within the scope of the present invention be covered in the appended claims.

Claims

1. A laundry detergent composition, comprising: 1) A polyalkylene oxide graft copolymer, wherein the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, and b) a polyvinyl ester component as a side chain, and / or c) polyvinylpyrrolidone as a side chain; 2) dye transfer inhibitor (DTI) polymers; The weight ratio of the polyalkylene oxide graft copolymer to the DTI polymer is 6.1:1 to 500:

1.

2. The laundry detergent composition according to claim 1, wherein the weight ratio of the polyalkylene oxide graft copolymer to the DTI polymer is 7:1 to 200:1, preferably 8:1 to 100:1, more preferably 10:1 to 80:1, most preferably 15:1 to 50:

1.

3. The laundry detergent composition according to claim 1 or 2, wherein the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, b) a polyvinyl ester component as a side chain, and c) polyvinyl pyrrolidone as a side chain.

4. A laundry detergent composition according to claim 3, wherein the polyalkylene oxide component has a number average molecular weight of 1000 to 20,000 Daltons and is based on ethylene oxide, propylene oxide and / or butylene oxide, and / or wherein the polyvinyl ester component is derived from a saturated monocarboxylic acid containing 1 to 6 carbon atoms and / or methyl or ethyl ester of acrylic acid or methacrylic acid; and / or wherein the weight ratio of component a) to component b) is from 1:0.1 to 1:0.99, preferably from 1:0.3 to 1:0.9, and / or wherein the weight ratio of component a) to component c) is 1:0.1 to 1:2, preferably 1:0.3 to 1:1; and / or wherein the polyalkylene oxide graft copolymer has a weight average molecular weight of 4,000Da to 100,000Da, preferably 5,000Da to 100,000Da, more preferably 5,000Da to 50,000Da, most preferably 8,000Da to 20,000Da; and / or In the polyalkylene oxide graft copolymer, 1.0 mol% to 60 mol%, preferably 20 mol% to 60 mol%, more preferably 30 mol% to 50 mol% of the graft monomer of component (c) is hydrolyzed.

5. The laundry detergent composition according to claim 1, wherein the polyalkylene oxide graft copolymer comprises: a) a polyalkylene oxide component as a graft base, and b) a polyvinyl ester component as a side chain, and wherein the side chain is preferably composed of the polyvinyl ester component.

6. The laundry detergent composition according to claim 5, wherein the polyalkylene oxide graft copolymer has an average of greater than 0 to less than or equal to 1 grafting site per 50 alkylene oxide units, and / or wherein the polyalkylene oxide graft copolymer has 20% to 70%, preferably 25% to 60%, by weight of the polymer, of the polyalkylene oxide component and 30% to 80%, preferably 40% to 75%, by weight of the polymer, of the vinyl ester component, and / or wherein the polyalkylene oxide graft copolymer has an average molar mass Mw of 3,000 to 60,000, preferably 6,000 to 45,000; and / or wherein the polyalkylene oxide graft copolymer has a polydispersity less than or equal to 3; and / or wherein the polyalkylene oxide graft copolymer comprises less than or equal to 10% by weight of polyvinyl ester in ungrafted form.

7. A laundry detergent composition according to any one of claims 1 to 6, wherein the DTI polymer is selected from: polyvinylpyrrolidone (PVP) polymers, polyamine N-oxide polymers, polyvinylimidazole (PVI) polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole (PVP / PVI), polyvinyloxazolidone polymers, poly(vinylpyridine-N-oxide) (PVNO) polymers, poly(vinylpyrrolidone) co-poly(vinylpyridine-N-oxide) (PVP / PVNO) polymers, and any mixtures thereof.

8. A laundry detergent composition according to any one of the preceding claims, wherein the DTI polymer is a PVP polymer, a PVI polymer, and / or a PVP / PVI copolymer.

9. A laundry detergent composition according to any one of the preceding claims, wherein the composition comprises: From about 0.01% to about 15%, preferably from about 0.05% to about 10%, more preferably from about 0.1% to about 5%, and most preferably from about 0.2% to about 3%, by weight of the composition, of the polyalkylene oxide graft copolymer, and / or From about 0.001% to about 1%, preferably from about 0.005% to about 0.5%, more preferably from about 0.008% to about 0.2%, and most preferably from about 0.01% to about 0.1%, by weight of the composition, of the DTI polymer.

10. A laundry detergent composition according to any one of the preceding claims, wherein the composition further comprises a processing aid, preferably selected from the group consisting of: surfactant systems, fatty acids and / or salts thereof, enzymes, encapsulated benefit agents, soil release polymers, hueing agents, builders, chelating agents, dye transfer inhibitors, dispersants, enzyme stabilizers, antioxidants, catalytic substances, bleaching agents, bleach catalysts, bleach activators, polymeric dispersants, soil removal / anti-redeposition agents, polymeric grease cleaners, amphiphilic copolymers, brighteners, foam suppressors, dyes, hueing agents, perfumes, structure elasticizers, fabric softeners, carriers, fillers, hydrotropes, solvents, antimicrobial agents and / or preservatives, neutralizers and / or pH adjusters, processing aids, rheology modifiers and / or structurants, opacifiers, pearlescent agents, pigments, corrosion and / or rust inhibitors, and mixtures thereof.

11. A laundry detergent composition according to any one of the preceding claims, wherein the composition is in the form of a liquid composition, a granular composition, a single compartment pouch, a multi-compartment pouch, a sheet, a pastille or bead, a fiber product, a tablet, a bar, a flake or a mixture thereof.

12. Use of a laundry detergent composition for improving color protection during laundry washing, preferably reducing dye fading and / or dye transfer to co-washed fabrics, the laundry detergent composition comprising: A polyalkylene oxide graft copolymer, the polyalkylene oxide graft copolymer comprising: a) a polyalkylene oxide component as a graft base, and b) a polyvinyl ester component as a side chain, and / or c) a polyvinyl pyrrolidone component as a side chain; and Dye transfer inhibitor (DTI) polymers, The weight ratio of the polyalkylene oxide graft copolymer to the DTI polymer is 6.1:1 to 500:1.

Images