Boosting wash performance

Abstract

The application relates to a liquid textile detergent product comprising 1.0% to 25.0% by weight of at least one linear alkylbenzenesulfonate, 1.0% to 35.0% by weight of at least one lauryl ether sulfate, 1.0% to 15% by weight of at least one nonionic surfactant, based in each case on the total amount of the product, and wherein the product at 20°C has a pH of 7.8 to 9.0, and wherein the weight ratio of a) to b) to c) is 2.5 to 4.0:0.3 to 1.0:1.5 to 2.5, and to methods using the product and to the use of the product and method.

Description

[0001] Increased washing performance

[0002] The invention is an invention in the field of textile detergents. It relates to liquid textile detergents, processes using the detergents, and the application of these detergents.

[0003] Liquid detergents are widely used and valued by consumers due to their convenient dosing. As food ingredients and habits change, washing performance must continually improve to protect consumers from the disappointment of suboptimal washing and cleaning results. Removing greasy and oily stains presents a particular and important challenge in this area, especially as washing temperatures continue to trend lower. Often, the washing temperature is even below the melting point of fats and oils, making their removal even more difficult. Roasting fat and beef fat, in particular, are consumer-relevant soils from the category of greasy, oily stains, on which only surfactants and specific enzymes such as lipases are effective.

[0004] Special surfactants help improve washing performance, but their use requires a large amount of solvents or other stabilizing ingredients. Some surfactants, such as LAS, are not well compatible with enzymes, which can reduce washing performance. Other surfactants that do not strongly influence enzyme performance, such as nonionic surfactants, fail to remove a wide range of greasy and oily stains. Lipases can lead to an increased unpleasant odor, which consumers perceive as unpleasant. Furthermore, not all fats and oils are broken down by lipase.

[0005] It was therefore the aim of the present invention to provide a liquid textile detergent which has an improved cleaning performance on the aforementioned soils such as roast fat or beef fat at low washing temperatures and at the same time does not show reduced performance on enzyme-sensitive soils.

[0006] Surprisingly, it was found that a liquid textile detergent with an increased LAS content at the same or reduced total amount of surfactant per wash cycle, with simultaneous adjustment of the amount of LES and amount of non-ionic surfactant, improves the washing or drying performance.

[0007] Cleaning performance regarding greasy and oily soils on the textile is improved and enzyme stability and enzyme performance are not negatively affected.

[0008] A first subject matter of the present application is therefore a liquid textile washing composition comprising a) 1.0 to 25.0% by weight of at least one linear alkylbenzenesulfonate, b) 1.0 to 35.0% by weight of at least one lauryl ether sulfate, c) 1.0 to 15% by weight of at least one non-ionic surfactant, in each case based on the total amount of the composition, and wherein the composition has a pH of 7.8 to 9.0 at 20 °C and wherein the weight ratio of a) to b) to c) is 2.5 to 4.0 to 0.3 to 1.0 to 1.5 to 2.5.

[0009] The selected concentration ranges and ratios of selected surfactants led to improved stain removal of certain consumer-relevant greasy and oily soils, especially at low washing temperatures, without negatively affecting the stability of the enzymes.

[0010] The agent can be used for textile washing. This application therefore also relates to a method for cleaning and / or caring for textiles using this agent.

[0011] These and other aspects, features, and advantages of the invention will become apparent to those skilled in the art from a study of the following detailed description and claims. Any feature of one aspect of the invention may be employed in any other aspect of the invention. Furthermore, it is to be understood that the examples contained herein are intended to describe and illustrate the invention, but not to limit it, and in particular, the invention is not limited to these examples. Unless otherwise stated, all percentages are by weight based on the total weight of the agent / composition.

[0012] Numerical ranges specified in the format "from x to y" include the specified values. If multiple preferred numerical ranges are specified in this format, it goes without saying that all ranges resulting from the combination of the different endpoints will also be included.

[0013] "At least one," as used herein, refers to 1, 2, 3, 4, 5, 6, 7, 8, 9, or more. In the context of components of the compositions described herein, this statement does not refer to the absolute amount of molecules but to the type of component. "At least one anionic surfactant" therefore means, for example, one or more different anionic surfactants, i.e., one or more different types of anionic surfactants. When used in conjunction with quantities, the quantities refer to the total amount of the correspondingly designated type of component.

[0014] The composition according to the invention has a pH of 7.8 to 9.0 at 20°C. The pH of the composition is important both for the stability of the composition or the individual ingredients and for the washing or cleaning effect of the agent. According to the invention, the pH of the liquid textile detergent at 20°C is preferably 7.9 to 8.8, particularly preferably 8.0 to 8.6.

[0015] To adjust the desired pH value, system- and environmentally compatible acids, in particular citric acid, acetic acid, tartaric acid, malic acid, lactic acid, amino acids such as glycine, glutamic acid, arginine and / or aspartic acid, glycolic acid, maleic acid, fumaric acid, salicylic acid, succinic acid, glutaric acid and / or adipic acid, but optionally also mineral acids, in particular sulfuric acid, or bases, in particular ammonium or alkali hydroxides, can be added to the agent according to the invention, provided that this pH value does not arise automatically from the mixture of the other components.

[0016] The composition according to the invention comprises several different surfactants from the group of anionic and non-ionic surfactants.

[0017] The composition according to the invention comprises at least one linear alkylbenzenesulfonate (LAS) in a total amount of 1.0 to 25.0 wt.%. These can be linear alkylbenzenesulfonates such as Cg-n-alkylbenzenesulfonates, especially linear C10-13-alkylbenzenesulfonates. Preference is given to agents which contain linear alkylbenzenesulfonates in a total amount of 5.0 to 15 wt.%, particularly preferably 8.0 to 11.0 wt.%. In particular, agents which contain linear C10-13-alkylbenzenesulfonate in an amount of 5.0 to 15 wt.%, particularly preferably 8.0 to 11.0 wt.%, are preferred.

[0018] The composition according to the invention also comprises at least one lauryl ether sulfate (LES) in a total amount of 1.0 to 35.0 wt.%.

[0019] These are lauryl ether sulfates of the formula R 1 -O-(AO) n -SO3 _ X +

[0020] In this formula, R1 represents the alcohol residue of lauryl alcohol. AO represents an ethylene oxide (EO) or propylene oxide (PO) group, preferably an ethylene oxide group. The index n represents an integer from 1 to 50, preferably from 1 to 20, and especially from 2 to 10. Most preferably, n represents the numbers 2, 3, 4, 5, 6, 7, or 8. X represents a monovalent cation or the nth part of an n-valent cation. Alkali metal ions are preferred, including Na+ or K+, with Na+ being extremely preferred.

[0021] Preferably, a lauryl ether sulfate with 7 EO units is used in the agents according to the invention, particularly preferably sodium lauryl ether sulfate 7 EO.

[0022] In particular, agents containing sodium lauryl ether sulfate 7 EO in an amount of 8.0 to 20 wt.%, particularly preferably 10.0 to 14.0 wt.%, are preferred.

[0023] The composition according to the invention also comprises at least one non-ionic surfactant in a total amount of 1.0 to 15 wt.%.

[0024] Suitable non-ionic surfactants include, for example, fatty alcohol alkoxylates, alkoxylated fatty acid alkyl esters, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ethers, amine oxides, alkyl polyglycosides, sophorolipids, mannosylerythritol lipids and mixtures thereof.

[0025] Nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated and / or propoxylated, preferably ethoxylated, especially primary alcohols with preferably 8 to 22 carbon atoms and an average of 1 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical can be linear or preferably methyl-branched in the 2-position, or can contain linear and methyl-branched radicals in a mixture, as is usually the case in oxo alcohol radicals. However, alcohol ethoxylates with linear radicals from alcohols of native origin with 12 to 18 carbon atoms, for example from coconut, palm, tallow, or oleyl alcohol, and an average of 2 to 8 moles of EO per mole of alcohol are particularly preferred.Preferred ethoxylated alcohols include, for example, C12-14 alcohols with 3 EO or 4 EO, C5-n alcohol with 7 EO, C13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C12-18 alcohols with 3 EO, 5 EO or 7 EO and mixtures thereof, such as mixtures of C12-14 alcohol with 3 EO and C12-18 alcohol with 5 EO.

[0026] The fatty alcohol alkoxylates preferably obey the following formula, R' -O-(EO) m -H where R' is a linear or branched, substituted or unsubstituted C8-C22 alkyl radical, EO is an ethylene oxide group, and m is an integer from 1 to 50, preferably 2 to 20, and more preferably 2 to 10. In particular, m is 3, 4, 5, 6, 7, or 8.

[0027] Preferred R' radicals are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl radicals, and mixtures thereof, with preference given to those with an even number of carbon atoms. Particularly preferred R' radicals are derived from fatty alcohols having 12 to 19 carbon atoms, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl, or stearyl alcohol, or from oxo alcohols having 10 to 19 carbon atoms.

[0028] Mixtures of fatty alcohol ethoxylates with different alkyl chain lengths and degrees of ethoxylation can also be used. Particularly preferred examples are fatty alcohols with 10 to 18 carbon atoms and 7 EO. Such fatty alcohol ethoxylates are available under the trade names Dehydol® LT7 (BASF), Lutensol® AO7 (BASF), Lutensol® M7 (BASF), and Neodol® 45-7 (Shell Chemicals). Also particularly preferred are fatty alcohols with 12 to 18 carbon atoms and 7 EO.

[0029] Agents according to the invention that contain a fatty alcohol ethoxylate as at least one nonionic surfactant are preferred according to the invention. These are particularly preferably fatty alcohols with 12 to 18 carbon atoms and 7 EO.

[0030] Furthermore, the liquid textile detergent may contain amine oxide as a non-ionic surfactant. Amine oxides are, in principle, all amine oxides established in the prior art for these purposes, i.e., compounds having the formula R 1 R 2 R 3 NO, wherein each R 1 , R 2 and R 3 independently of the others, is an optionally substituted hydrocarbon chain having 1 to 30 carbon atoms. Particularly preferred amine oxides are those in which R 1 Alkyl with 12 to 18 carbon atoms and R 2 and R 3 are each independently alkyl having 1 to 4 carbon atoms, in particular alkyldimethylamine oxides having 12 to 18 carbon atoms. Examples of suitable amine oxides are N-cocoalkyl-N,N-dimethylamine oxide, N-tallowalkyl-N,N-dihydroxyethylamine oxide, myristyl-Z-cetyldimethylamine oxide, or lauryldimethylamine oxide.

[0031] Other suitable nonionic surfactants include, for example, alkyl glycosides of the general formula RO(G)x, in which R corresponds to a primary straight-chain or methyl-branched, in particular 2-methyl-branched, aliphatic radical having 8 to 22, preferably 12 to 18, carbon atoms, and G is the symbol representing a glycose unit having 5 or 6 carbon atoms, preferably glucose. The degree of oligomerization x, which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; preferably, x is between 1.2 and 1.4.

[0032] Other suitable nonionic surfactants are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated fatty acid alkyl esters, preferably with 1 to 4 carbon atoms in the alkyl chain. Polyhydroxy fatty acid amides, polyol fatty acid esters, alkoxylated triglycerides, hydroxy mixed ethers, sorbitan fatty acid esters, and addition products of ethylene oxide with sorbitan fatty acid esters such as polysorbates, sugar fatty acid esters and addition products of ethylene oxide with sugar fatty acid esters, addition products of ethylene oxide with fatty acid alkanolamides and fatty amines, fatty acid N-alkylglucamides, and biosurfactants such as sophorolipids or mannosyl erythritol lipids (MEL) can also be used as nonionic surfactants.

[0033] Preferred agents are those containing nonionic surfactants in a total amount of 3.0 to 10.0 wt.%, preferably 4.0 to 8.0 wt.%. Particularly preferred are agents containing fatty alcohols having 12 to 18 carbon atoms and 7 EO in an amount of 1.0 to 15 wt.%, more preferably 3.0 to 10.0 wt.%, particularly preferably 4.0 to 8.0 wt.%.

[0034] The agent according to the invention contains a) linear alkylbenzenesulfonates, b) lauryl ether sulfate, and c) nonionic surfactant in a weight ratio of a) to b) to c) of 2.5 to 4.0 to 0.3 to 1.0 to 1.5 to 2.5. This ratio, together with the amount of the respective surfactants, enables improved removal of greasy or oily soils. The weight ratio of a) to b) to c) is preferably 2.8 to 3.5 to 0.5 to 0.8 to 1.8 to 2.3.

[0035] A preferred subject matter of the present application is therefore a liquid textile washing detergent comprising a) 5.0 to 15% by weight, preferably from 8.0 to 11.0% by weight, of at least one linear alkylbenzenesulfonate, b) 8.0 to 20% by weight, preferably from 10.0 to 14.0% by weight, of at least one lauryl ether sulfate, c) 3.0 to 10.0% by weight, preferably from 4.0 to 8.0% by weight, of at least one non-ionic surfactant, in each case based on the total amount of the detergent, and wherein the detergent has a pH of 8.0 to 8.6 at 20 °C, wherein the weight ratio of a) to b) to c) is 2.8 to 3.5 to 0.5 to 0.8 to 1.8 to 2.3.

[0036] The agent according to the invention may contain one or more additional surfactants from the group of anionic and nonionic surfactants. Furthermore, the agent may also contain surfactants from the group of amphoteric or zwitterionic surfactants and cationic surfactants.

[0037] Other anionic surfactants or anionic surfactants that can be used within the meaning of this application include, for example, branched alkylbenzenesulfonates, fatty alcohol sulfates, other alkyl ether sulfates, ether carboxylates, secondary alkanesulfonates, sulfosuccinates, taurides, isethionates, rhamnolipids or soaps.

[0038] Sulfonate-type surfactants are particularly preferred as anionic surfactants. Preferred surfactants are C 6 -n-alkylbenzenesulfonates, olefinsulfonates, i.e., mixtures of alkene and hydroxyalkanesulfonates, and disulfonates, such as those obtained, for example, from C 12-18 monoolefins with a terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acidic hydrolysis of the sulfonation products. Also suitable are C 12-18 alkanesulfonates and the esters of α-sulfofatty acids (estersulfonates), for example, the α-sulfonated methyl esters of hydrogenated coconut, palm kernel, or tallow fatty acids.

[0039] Other preferred anionic surfactants include fatty alcohol sulfates (also known as alk(en)yl sulfates). Preferred anionic surfactants are the alkali metal salts, and especially the sodium salts, of the sulfuric acid half-esters of C12-C18 fatty alcohols, for example, coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl, or stearyl alcohol, or of C10-C20 oxo alcohols, and those half-esters of secondary alcohols with these chain lengths. For washing purposes, C12-C16 alkyl sulfates, C12-C15 alkyl sulfates, and C14-C15 alkyl sulfates are preferred. 2,3-Alkyl sulfates are also suitable anionic surfactants.

[0040] Suitable anionic surfactants also include alkyl ether sulfates of the formula R 1 -O-(AO) n -SO3- X +

[0041] In this formula, R 1 represents a linear or branched, substituted or unsubstituted alkyl radical, preferably a fatty alcohol radical. Preferred radicals R1 selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl radicals and mixtures thereof, with the representatives having an even number of carbon atoms being preferred. Particularly preferred radicals R 1 are derived from Cs-Cs fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, myristyl, cetyl or stearyl alcohol, particularly preferred are Cs2-Cs4 fatty alcohols. AO stands for an ethylene oxide (EO) or propylene oxide (PO) group, preferably an ethylene oxide group. The index n stands for an integer from 1 to 50, preferably from 1 to 20 and in particular from 2 to 10. Most preferably, n stands for the numbers 2, 3, 4, 5, 6, 7 or 8. X stands for a monovalent cation or the nth part of an n-valent cation, preferred are the alkali metal ions, and among these, Na + or K + , where Na +is highly preferred. Particular preference is given to using a Ci2-14 alkyl ether sulfate with 2 EO.

[0042] Other suitable anionic surfactants are soaps, i.e., salts of linear or branched, saturated, or mono- or polyunsaturated Cs-22 carboxylic acids. In a preferred embodiment, this is a linear, saturated, or mono- or polyunsaturated Cs-22 carboxylic acid, particularly preferably a linear, saturated, or mono- or polyunsaturated Cs-11 carboxylic acid, in particular a linear, saturated, or mono- or polyunsaturated Cs-12-18 carboxylic acid. Examples of suitable saturated and unsaturated fatty acid soaps are the salts of lauric acid, myristic acid, palmitic acid, stearic acid, (hydrogenated) erucic acid, and behenic acid, as well as, in particular, soap mixtures derived from natural fatty acids, for example, coconut, palm kernel, olive oil, or tallow fatty acids.

[0043] The anionic surfactants can be in the form of their sodium, potassium, magnesium, or ammonium salts. The profaned forms of choline, triethylamine, monoethanolamine, or methylethylamine are also suitable as counterions for the anionic surfactants.

[0044] Zwitterionic or amphoteric surfactants can also be used, for example betaines, sulfobetaines or amphoacetates.

[0045] Cationic surfactants can also be used, such as quaternary ammonium compounds, especially esterquats. However, in a preferred embodiment, the liquid textile detergent is free of cationic surfactants.

[0046] Among other things, to stabilize the enzymes, the detergents according to the invention may contain stabilizers such as boric acid and / or boric acid derivatives. Preferred detergents are those containing boric acid and / or its derivatives in a total amount of 0.1 to 3.0 wt.%, particularly preferably 1.0 to 1.5 wt.%.

[0047] In addition, agents according to the invention are preferred which contain citric acid in an amount of 0.1 to 3.5% by weight, particularly preferably 0.5 to 1.5% by weight. A preferred subject of the present application is therefore a liquid textile detergent containing a) 5.0 to 15% by weight, preferably 8.0 to 11.0% by weight, of at least one linear alkylbenzenesulfonate, b) 8.0 to 20% by weight, preferably 10.0 to 14.0% by weight, of at least one lauryl ether sulfate, c) 3.0 to 10.0% by weight, preferably 4.0 to 8.0% by weight, of at least one nonionic surfactant,

[0048] Boric acid, preferably in an amount of 0.1 to 3.5 wt.%, and / or citric acid, preferably in an amount of 0.1 to 3.5 wt.%, each based on the total amount of the agent, and wherein the agent has a pH of 8.0 to 8.6 at 20°C, wherein the weight ratio of a) to b) to c) is 2.5 to 4.0 to 0.3 to 1.0 to 1.5 to 2.5.

[0049] The liquid textile detergent may further contain one or more enzymes. In principle, all enzymes established in the prior art for this purpose can be used. Preferably, these are one or more enzymes that can exhibit catalytic activity in a detergent, in particular a protease, amylase, lipase, cellulase, hemicellulase, mannanase, pectin-cleaving enzyme, tannase, xylanase, xanthanase, β-glucosidase, carrageenase, perhydrolase, oxidase, oxidoreductase, hexosaminidase, and mixtures thereof. Preferred hydrolytic enzymes include, in particular, proteases, amylases, in particular α-amylases, cellulases, lipases, hemicellulases, in particular pectinases, mannanases, β-glucanases, and mixtures thereof. Particularly preferred enzymes are those selected from the group comprising amylases, proteases, cellulases, mannanases and lipases and mixtures thereof.These enzymes are essentially of natural origin; improved versions of the natural molecules are available for use in detergents and are therefore preferred. The enzymes can be adsorbed onto carriers and / or embedded in coating substances to protect them against premature inactivation. The enzymes can also be formulated with accompanying substances, such as those from fermentation, or with stabilizers.

[0050] It is preferred according to the invention that the liquid textile detergent comprises at least one enzyme, particularly preferably one or more enzymes preferably selected from the group comprising amylases, proteases, cellulases, mannanases, lipases and mixtures thereof.

[0051] A preferred subject matter is accordingly a liquid textile detergent as described in this application, which contains one or more enzymes, preferably selected from the group comprising amylases, proteases, cellulases, mannanases, lipases and mixtures thereof.It is also preferred according to the invention that the liquid textile detergent contains at least one further active ingredient, preferably selected from the group comprising builders, bleaching agents, bleach activators, electrolytes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, anti-redeposition agents, graying inhibitors, shrinkage inhibitors, preservatives, antimicrobial agents, crease inhibitors, color transfer inhibitors, solvents, antioxidants, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, skin-care active ingredients, swelling and slip-resistant agents, softening components and UV absorbers.

[0052] It is also preferred according to the invention that the liquid textile detergent contains at least one further active ingredient, preferably selected from the group comprising builders, bleaching agents, bleach activators, electrolytes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, anti-redeposition agents, graying inhibitors, shrinkage inhibitors, crease inhibitors, color transfer inhibitors, solvents, antioxidants, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, skin-care active ingredients, swelling and slip-resistant agents, softening components and UV absorbers.

[0053] A textile detergent according to the invention preferably contains at least one water-soluble and / or water-insoluble, organic and / or inorganic builder. The water-soluble organic builder substances include polycarboxylic acids, in particular citric acid and sugar acids, monomeric and polymeric aminopolycarboxylic acids and their salts, in particular glutamic acid-N,N-diacetic acid (GLDA), methylglycinediacetic acid (MGDA), nitrilotriacetic acid (NTA), iminodisuccinates such as ethylenediamineN,N'-disuccinic acid (EDDS) and hydroxyiminodisuccinates (HIDS), ethylenediaminetetraacetic acid (EDTA) and polyaspartic acid, polyphosphonic acids, in particular aminotris(methylenephosphonic acid), ethylenediaminetetrakis(methylenephosphonic acid), lysinetetra(methylenephosphonic acid) and 1-hydroxyethane1,1-diphosphonic acid, polymeric hydroxy compounds such as dextrin and polymeric (poly)carboxylic acids, in particular polycarboxylates accessible by oxidation of polysaccharides, polymeric acrylic acids,Methacrylic acids, maleic acids, and copolymers thereof, which may also contain small proportions of polymerizable substances without carboxylic acid functionality. The relative average molecular weight of the homopolymers of unsaturated carboxylic acids is generally between 5,000 g / mol and 200,000 g / mol, and that of the copolymers between 2,000 g / mol and 200,000 g / mol, preferably 50,000 g / mol to 120,000 g / mol, in each case based on the free acid. A particularly preferred acrylic acid-maleic acid copolymer has a relative average molecular weight of 50,000 to 100,000. Suitable, albeit less preferred, compounds of this class are copolymers of acrylic acid or methacrylic acid with vinyl ethers, such as vinyl methyl ethers, vinyl esters, ethylene, propylene, and styrene, in which the proportion of acid is at least 50% by weight. Terpolymers can also be used as water-soluble organic builder substances,which contain as monomers two unsaturated acids and / or their salts and as a third monomer vinyl alcohol and / or a vinyl alcohol derivative or a carbohydrate.

[0054] Suitable water-soluble inorganic builder materials include polyphosphates, preferably sodium triphosphate, as well as water-soluble crystalline and / or amorphous alkali silicate builders. However, in a preferred embodiment, the textile detergents according to the invention are phosphate-free.

[0055] Crystalline or amorphous, water-dispersible alkali aluminosilicates are particularly used as water-insoluble inorganic builder materials. Among these, crystalline sodium aluminosilicates of detergent quality, especially zeolite A, zeolite P, zeolite MAP, and optionally zeolite X, are preferred.

[0056] Any substance that destroys or absorbs dyes through oxidation, reduction, or adsorption, thereby decolorizing materials, can serve as bleaching agents. These include, among others, hypohalite-containing bleaching agents, hydrogen peroxide, perborate, percarbonate, peroxoacetic acid, diperoxoazelaic acid, diperoxododecanedioic acid, and oxidative enzyme systems.

[0057] Graying inhibitors are designed to keep soil detached from textile fibers suspended in the liquor. Suitable for this purpose are water-soluble colloids, usually of an organic nature, such as starch, glue, gelatin, salts of ether carboxylic acids or ether sulfonic acids of starch or cellulose, or salts of acidic sulfuric acid esters of cellulose or starch. Water-soluble polyamides containing acidic groups are also suitable for this purpose. Starch derivatives other than those mentioned above can also be used, for example, aldehyde starches. Cellulose ethers, such as carboxymethylcellulose (sodium salt), methylcellulose, hydroxyalkylcellulose, and mixed ethers, such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylcarboxymethylcellulose, and mixtures thereof, are preferred.

[0058] The preservatives or antimicrobial agents may be active ingredients from the group of antimicrobial peptides, benzyl alcohol, formaldehyde-containing preservatives, isothiazoles and their derivatives, phthalimides, benzalkonium chloride, benzoic acid, phenoxyethanol or mixtures of these.

[0059] Furthermore, soil release polymers, or soil release polymers (SRPs), can be included. Particularly suitable SRPs are oligoesters, preferably obtained from terephthalic acid, isophthalic acid, sulfoisophthalic acid, and / or their methyl esters; aliphatic dicarboxylic acids (saturated and / or unsaturated), for example adipic acid, and / or their anhydrides; aliphatic substituted dicarboxylic acids, for example nonylsuccinic acid; alkylene glycols (ethylene, 1,2-propylene, 1,2-butylene glycol); polyethylene glycols, alkylpolyethylene glycols, polyethylene glycol benzoic acid esters, polyethylene glycol sulfobenzoic acid esters, and optionally alkanolamines. Terephthalate-PEG-based polymers, such as those commercially available under the trade name Texcare®, are preferred. Alternatively, (co)polymers based on polyethyleneimine, polyvinyl acetate and polyethylene glycol can also be used.

[0060] Suitable soil-removing polymers are generally already known to a sufficient extent from the prior art. Therefore, all polymers known in the prior art for this purpose can be used.

[0061] In order to effectively suppress dye detachment and / or dye transfer to other textiles during washing and / or cleaning of dyed textiles, the composition according to the invention can contain a dye transfer inhibitor (DTI). It is preferred that the dye transfer inhibitor is a polymer or copolymer of cyclic amines such as vinylpyrrolidone and / or vinylimidazole. Suitable polymers include polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI), polyvinylpyridine N-oxide, poly-N-carboxymethyl-4-vinylpyridium chloride, and mixtures thereof. Particular preference is given to using polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), or copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI) as dye transfer inhibitors.

[0062] Polycarboxylates are particularly suitable as anti-redeposition agents. Suitable materials can be prepared by polymerizing or copolymerizing unsaturated carboxylic acid monomers, such as acrylic acid, maleic acid (or anhydride), fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid, and methylmalonic acid. Acrylate polymers and acrylic / maleic acid copolymers are particularly preferred.

[0063] As optical brighteners, textile detergents can contain, for example, derivatives of diaminostilbenedisulfonic acid or its alkali metal salts. However, color detergents are preferably free of optical brighteners. Suitable examples include salts of 4,4'-bis(2-anilino-4-morpholino-1,3,5-triazinyl-6-amino)stilbene-2,2'-disulfonic acid or similarly structured compounds that carry a diethanolamino group, a methylamino group, an anilino group, or a 2-methoxyethylamino group instead of the morpholino group. Furthermore, brighteners of the substituted diphenylstyryl type may be present, for example, the alkali metal salts of 4,4'-bis(2-sulfostyryl)diphenyl, 4,4'-bis(4-chloro-3-sulfostyryl)diphenyl, or 4-(4-chlorostyryl)-4'-(2-sulfostyryl)diphenyl. Mixtures of the aforementioned optical brighteners can also be used.Particularly when used in machine processes, it can be advantageous to add conventional foam inhibitors to textile detergents. Suitable foam inhibitors include, for example, soaps of natural or synthetic origin that contain a high proportion of C1a-C24 fatty acids. Suitable non-surfactant foam inhibitors include, for example, organopolysiloxanes and their mixtures with microfine, optionally enhanced silica, as well as paraffins, waxes, microcrystalline waxes and their mixtures with enhanced silica, or bisfatty acid alkylenediamides. Mixtures of different foam inhibitors, for example, those made from silicones, paraffins, or waxes, are also advantageously used. The foam inhibitors, in particular silicone- and / or paraffin-containing foam inhibitors, are preferably bound to a granular, water-soluble or water-dispersible carrier substance.In particular, mixtures of paraffins and bistearylethylenediamide are preferred.

[0064] To further improve the stability of the agents, hydrotropes can be used in addition to the surfactant systems described herein. The term "hydrotrope," as used in connection with the present invention, refers to additives or solvents that increase the water solubility of sparingly soluble (hydrophobic) organic compounds. A second component (i.e., the hydrotrope), which is not itself a solvent, is added to the sparingly soluble substance. Such hydrotropes have hydrophilic and hydrophobic structural units (like surfactants) but without the tendency to form aggregates in water (unlike surfactants). In various embodiments, these hydrotropes have no micelle-forming activity, or the critical micelle concentration (CMC) is greater than 10 -4mol / L, preferably greater than 10 -3 mol / L and more preferably 10 -2mol / L. The "critical micelle concentration," in accordance with the general understanding in the prior art, is the concentration of the substance in question above which it begins to form micelles, and each additional molecule added to the system transforms into micelles. The hydrotropes used typically have a molecular weight of <10,000 g / mol, preferably <2,500 g / mol, more preferably <1,000 g / mol, and most preferably <500 g / mol. They can be selected, for example, from short-chain mono-, di-, tri-, tetra- or penta-alkylbenzenesulfonates, in particular C1-6 alkylbenzenesulfonates, where the alkyl groups can be linear or branched, including but not limited to cumenesulfonate, toluenesulfonate and / or xylenesulfonate as well as butylglycol, propylene glycol, 3-methoxy-3-methyl-1-butanol, 2,2-dimethyl-4-hydroxymethyl-1,2-dioxolane, propylene carbonate, butyl lactate, 2-isobutyl-2-methyl-1,3-dioxolane-4-methanol or mixtures thereof.The hydrotropic compounds are preferably used in a range of 0.1 to 5 wt.%, more preferably 1 to 2 wt.%, based on the total weight of the detergents.

[0065] The liquid agent preferably contains solvents. In a preferred embodiment, the main solvent is water. Non-aqueous solvents can also be added to the agent. Suitable non-aqueous solvents include mono- or polyhydric alcohols, alkanolamines, or glycol ethers, provided they are miscible with water within the specified concentration range.The solvents are preferably selected from ethanol, n-propanol, i-propanol, butanols, glycol, propanediol, butanediol, methylpropanediol, glycerin, diglycol, propyl diglycol, butyl diglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, methoxytriglycol, ethoxytriglycol, butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, di-n-octyl ether and mixtures of these solvents. Particular preference is given to using an alcohol, in particular ethanol and / or glycerin.

[0066] Yet another subject matter of the invention is a method for cleaning and caring for textiles, comprising the method steps: d) providing a washing solution comprising a textile washing agent according to the invention, e) bringing a textile into contact with the washing solution according to d).

[0067] Here, a particularly good cleaning of the textiles is achieved, as can be seen in the examples.

[0068] Preferred processes are those in which the washing solution according to d) has a temperature of 15 to 60 °C, preferably 20 to 40 °C, particularly preferably 20 to 30 °C. This allows for gentle cleaning of textiles, as high temperatures are not required. At the same time, energy is saved, as the washing solution does not need to be heated to higher temperatures.

[0069] Yet another subject of the invention is the use of an agent according to the invention and / or a method according to the invention for cleaning textiles, preferably for removing greasy and / or oily soils. Examples of embodiments:

[0070] The following compositions were tested for their cleaning performance:

[0071] Table 1 :

[0072] Products V1, E1, and E2 were tested on various types of soiling on cotton and polyester fabrics. The laundry was washed in a standard washing machine (Whirlpool (WFW 88 HEAW 2), front-loader) using the dosages specified in Table 1 for the respective detergents (programs: Normal Hot, Extra Fast, Heavy; water volume: 17L).

[0073] Water hardness 6.72°; 1 ppm chlorine).

[0074] There was no deterioration compared to the reference composition V1, see Table 2. Table 2:

[0075] The results for the type of contamination with improved performance compared to V1 can be seen in Table 3.

[0076] Table 3:

[0077] Significant performance improvements were observed for both E1 and E2 on greasy and oily soils, both on cotton and polyester, compared to the reference composition V1, with a reduction in the amount of total composition and surfactant used.

Claims

Patent claims:

1. Liquid textile detergent containing a) 1.0 to 25.0 wt.% of at least one linear alkylbenzenesulfonate, b) 1.0 to 35.0 wt.% of at least one lauryl ether sulfate, c) 1.0 to 15 wt.% of at least one non-ionic surfactant, in each case based on the total amount of the detergent, and wherein the detergent has a pH of 7.8 to 9.0 at 20 °C and wherein the weight ratio of a) to b) to c) is 2.5 to 4.0 to 0.3 to 1.0 to 1.5 to 2.

5.

2. Agent according to claim 1, wherein linear alkylbenzenesulfonate is contained in a total amount of 5.0 to 15% by weight, preferably 8.0 to 11.0% by weight.

3. Agent according to one of the preceding claims, wherein lauryl ether sulfate is contained in a total amount of 8.0 to 20% by weight, preferably 10.0 to 14.0% by weight.

4. Agent according to one of the preceding claims, wherein nonionic surfactant is present in a total amount of 3.0 to 10.0 wt.%, preferably 4.0 to 8.0 wt.%.

5. Agent according to one of the preceding claims, wherein it comprises 0.1 to 3.0 wt.% boric acid, preferably 1.0 to 1.5 wt.% boric acid, and / or 0.1 to 3.5 wt.% citric acid, preferably 0.5 to 1.5 wt.% citric acid.

6. Agent according to one of the preceding claims, wherein the agent contains one or more enzymes, preferably selected from the group comprising amylases, proteases, cellulases, mannanases, lipases and mixtures thereof.

7. A composition according to any one of the preceding claims, wherein the composition has a pH of 8.0 to 8.6 at 20°C.

8. A method for cleaning and caring for textiles, comprising the method steps: d) providing a washing solution comprising a textile detergent according to one of claims 1 to 7, e) bringing a textile into contact with the washing solution according to d).

9. The process according to claim 8, wherein in the process the washing solution according to d) has a temperature of 15 to 60 °C, preferably of 20 to 40 °C, particularly preferably of 20 to 30 °C.

10. Use of an agent according to one of claims 1 to 7 and / or a method according to one of claims 8 and 9 for cleaning textiles, preferably for removing greasy and / or oily soiling.

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