WO2025131511A1 - Liquid laundry detergent contaning stabilizing ingredients - Google Patents

Abstract

The application relates to a liquid textile laundry detergent having a pH in a range of 7.0 to 9.5 at 20°C and containing 0.01 to 10 wt.% monoethanolamine; 0.001 to 0.5 wt.% sodium disulfite and 10 to 35 wt.% of at least one surfactant. The invention also relates to a method for cleaning and/or caring for textiles, comprising the method steps of: a) providing a wash solution which comprises a textile laundry detergent of this type, and b) contacting a textile with the wash solution according to a).

Description

liquid detergents with stabilizing ingredients

The application relates to a liquid textile detergent having a pH in the range of 7.0 to 9.5 at 20°C, containing 0.01 to 10% by weight of monoethanolamine; 0.001 to 0.5% by weight of sodium disulfite and 10 to 35% by weight of at least one surfactant, as well as a method for cleaning and/or caring for textiles using this agent.

Liquid detergents are widely used and recognized by consumers for their convenient dosing and handling. The sensitive skin segment in Europe is constantly growing, as consumers increasingly feel they have sensitive skin. They have a heightened awareness of the ingredients used in detergents. Consumers with sensitive skin or those with allergies, in particular, are focusing on products with hypoallergenic formulas or formulas with low or no sensitizing potential. Common sensitizing ingredients fall into the categories of perfumes and preservatives. But also other ingredients, for example, those considered CMR substances in the new regulations and regulated via maximum concentrations, or those that raise socioeconomic concerns, especially among sensitive consumers, despite having no negative impact on the toxicological profile of the final product. One of these substances is boric acid. There is a high demand for the removal of boric acid from formulations.

Due to its buffering capacity, boric acid stabilizes enzyme compositions in liquid detergents, among other things, and also has a preservative effect. At the same time, it is comparatively inexpensive in relation to the overall cost of a liquid detergent formulation.

For the consumer to accept a composition, it is also crucial that the product has an appealing appearance and is free of visual defects.

The object of the present invention was therefore to provide a liquid textile detergent that does not require boric acid to stabilize the composition, particularly with regard to pH and preservation, and that simultaneously meets aesthetic requirements. Furthermore, the detergent should exhibit high washing power while avoiding sensitizing ingredients, while simultaneously maintaining the physicochemical and microbiological stability of the liquid detergent.

Surprisingly, it was found that the combination of monoethanolamine and sodium disulfite can stabilize a liquid textile detergent in terms of buffer capacity and color, thus eliminating the need for boric acid in the composition. The present object was therefore achieved by a liquid textile detergent with a pH value in a range of 7.0 to 9.5 at 20 °C containing

0.01 to 10 wt% monoethanolamine;

0.001 to 0.5 wt% sodium disulfite;

10 to 35 wt.% of at least one surfactant.

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.

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.

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 is understood that all ranges resulting from the combination of the different endpoints will also be included.

"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 rather 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.

The composition according to the invention has a pH of 7.0 to 9.5 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 7.2 to 9.2, particularly preferably 7.8 to 8.8.

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, may be added.

The composition according to the invention comprises monoethanolamine (also 2-aminoethanol or MEA for short) in an amount of 0.01 to 10 wt.%. The use of monoethanolamine in the agent according to the invention surprisingly leads to a stabilization of the composition even without the use of boric acid. According to the invention, monoethanolamine is preferably present in the liquid textile detergent in an amount of 0.05 to 5 wt.%, particularly preferably 0.1 to 3 wt.%, and especially preferably 0.5 to 2.5 wt.%.

The composition according to the invention comprises sodium disulfite (N32S2O5) in an amount of 0.001 to 0.5 wt.%. The use of sodium disulfite in the composition according to the invention surprisingly leads to increased stability, in particular color stability, of the composition. According to the invention, sodium disulfite is preferably present in the liquid textile detergent in an amount of 0.01 to 0.09 wt.%, particularly preferably 0.04 to 0.1 wt.%, and especially preferably 0.06 to 0.08 wt.%.

A preferred article is therefore a liquid textile detergent with a pH in a range of 7.8 to 8.8 at 20 °C containing

0.05 to 5% by weight, particularly preferably from 0.1 to 3% by weight, especially preferably from 0.5 to 2.5% by weight of monoethanolamine;

0.01 to 0.09 wt.%, particularly preferably 0.04 to 0.1 wt.%, especially preferably 0.06 to 0.08 wt.% sodium disulfite;

10 to 35 wt.% of at least one surfactant.

The composition according to the invention comprises at least one surfactant in an amount of 10 to 35 wt.%. One or more surfactants are used. The surfactants are preferably selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric or zwitterionic surfactants, and mixtures thereof.

Examples of anionic surfactants that can be used within the meaning of this application are linear or branched alkylbenzenesulfonates, fatty alcohol sulfates, alkyl ether sulfates, ether carboxylates, secondary alkanesulfonates, sulfosuccinates, taurides, isethionates, rhamnolipids or soaps.

Sulfonate-type surfactants are particularly preferred as anionic surfactants. These include preferably Cg-n-alkylbenzenesulfonates, olefinsulfonates, ie mixtures of alkene and hydroxyalkanesulfonates, and disulfonates, such as those obtained, for example, from Cs-monoolefins with terminal or internal double bonds by sulfonation with gaseous sulfur trioxide. and subsequent alkaline or acidic hydrolysis of the sulfonation products. Also suitable are C s-alkanesulfonates and the esters of α-sulfofatty acids (ester sulfonates), for example, the α-sulfonated methyl esters of hydrogenated coconut, palm kernel, or tallow fatty acids.

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 semiesters 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 semiesters 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.

Suitable anionic surfactants also include alkyl ether sulfates of the formula R ¹ -O-(AO) _n -SO ₃ - X ⁺

In this formula, R ¹ represents a linear or branched, substituted or unsubstituted alkyl radical, preferably a fatty alcohol radical. Preferred R ¹ radicals are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl radicals, and mixtures thereof, with preference being given to those with an even number of carbon atoms. Particularly preferred R ¹ radicals are derived from C 5 -C 18 fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl, or stearyl alcohol; particular preference is given to C 12 -C 14 fatty alcohols. AO represents an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably an ethylene oxide moiety. The index n represents an integer from 1 to 50, preferably from 1 to 20, and in particular 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, preferred being alkali metal ions, including Na ⁺ or K ⁺ , with Na ⁺ being extremely preferred. Particular preference is given to using a C12-C14 alkyl ether sulfate with 2 EO.

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-18 carboxylic acid, in particular a linear, saturated or mono- or polyunsaturated Cs-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. The anionic surfactants can be present 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.

The liquid textile detergent preferably contains anionic surfactants in an amount of 1 to 20 wt.%, preferably 3 to 15 wt.%, in particular 5 to 10 wt.%.

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.

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-C14 alcohols with 3 EO or 4 EO, C12-C14 alcohols with 7 EO, C13-C15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C12-C18 alcohols with 3 EO, 5 EO or 7 EO and mixtures thereof, such as mixtures of C12-C14 alcohol with 3 EO and C15-C18 alcohol with 5 EO.

The fatty alcohol alkoxylates preferably conform to the following formula: R'-O-(EO) _m -H, where R' represents a linear or branched, substituted or unsubstituted Cs-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.

Preferred R' radicals are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, and 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.

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

The liquid textile detergent can also contain amine oxide as a non-ionic surfactant. In principle, all amine oxides established in the prior art for these purposes, i.e. compounds which have the formula R ¹ R ² R ³ NO, in which each R ¹ , R ² and R ³ , independently of the others, is an optionally substituted hydrocarbon chain having 1 to 30 carbon atoms, can be used as the amine oxide. Particularly preferably used amine oxides are those in which R ^{1 is} alkyl having 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-Zcetyldimethylamine oxide or lauryldimethylamine oxide.

Other suitable non-ionic surfactants are, 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 1.2 to 1.4.

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.

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

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. According to the invention, it is preferred that the at least one surfactant, preferably a mixture of two or more surfactants, is present in the liquid textile detergent in an amount of 15 to 30 wt.%. A mixture of anionic and nonionic surfactants is preferably used, particularly preferably in a total amount of 15 to 30 wt.%.

A preferred article is therefore a liquid textile detergent with a pH in a range of 7.8 to 8.8 at 20 °C containing

0.05 to 5% by weight, particularly preferably from 0.1 to 3% by weight, especially preferably from 0.5 to 2.5% by weight of monoethanolamine;

0.01 to 0.09 wt.%, particularly preferably 0.04 to 0.1 wt.%, especially preferably 0.06 to 0.08 wt.% sodium disulfite;

15 to 30 wt.% of one or more surfactants from the group of anionic surfactants, non-ionic surfactants, amphoteric or zwitterionic surfactants and mixtures thereof.

According to the invention, it is preferred that the liquid textile detergent contains boric acid only in a limited amount. It is preferred that the detergent according to the invention contains less than 0.5% by weight, particularly preferably less than 0.1% by weight, of boric acid. It is particularly preferred that the liquid textile detergent contains no boric acid or is free of boric acid. In the context of this invention, this means that boric acid is neither added as a separate ingredient nor introduced into the claimed detergent via preparations of other ingredients, for example in amounts of up to 0.01 or up to 0.001% by weight, based on the total mass of the detergent.

A preferred subject matter is accordingly a liquid textile detergent as described in this application, which contains less than 0.5% by weight, particularly preferably less than 0.1% by weight, of boric acid, even more preferably which is in particular free of boric acid.

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, as well as mixtures thereof. These enzymes are essentially of natural origin; based on the natural molecules, improved variants are available for use in detergents. Available, which are used preferentially. The enzymes can be adsorbed on carriers and/or embedded in coating substances to protect them against premature inactivation. The enzymes to be used can also be formulated together with accompanying substances, such as those from fermentation, or with stabilizers.

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.

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. A particularly preferred subject matter is accordingly a liquid textile detergent as described in this application, which has less than 0.5% by weight, particularly preferably less than 0.1% by weight, of boric acid, even more preferably which is in particular free of boric acid, and which contains one or more enzymes, preferably selected from the group comprising amylases, proteases, cellulases, mannanases, lipases, and mixtures thereof.

In addition to the active ingredient monoethanolamine to be used according to the invention, the liquid textile detergent can also contain other ingredients that act as preservatives. For example, these can be antimicrobial 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 thereof. However, it is preferred according to the invention that the liquid textile detergent contains other ingredients that act as preservatives only in a limited amount. It is preferred that the agent according to the invention contains less than 0.5% by weight, particularly preferably less than 0.1% by weight, of other ingredients that act as preservatives. It is particularly preferred that the liquid textile detergent contains no other ingredients that act as preservatives or is free from other ingredients that act as preservatives. In the context of this invention, this means that other ingredients effective as preservatives are neither added as a separate ingredient nor are they introduced into the claimed agent via preparations of other ingredients, for example in amounts of up to 0.01 or up to 0.001 wt.% based on the total mass of the agent.

A preferred subject matter is therefore a liquid textile detergent as described in this application, which does not contain an antimicrobial active ingredient from the group of antimicrobial peptides, benzyl alcohol, formaldehyde-containing preservatives, isothiazoles and their derivatives, phthalimides, benzalkonium chloride, benzoic acid, phenoxyethanol or 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, 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.

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 mass 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 mass of 50,000 to 100,000. Suitable, although 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 containing two unsaturated acids and/or their salts as monomers and vinyl alcohol and/or a vinyl alcohol derivative or a carbohydrate as the third monomer can also be used as water-soluble organic builder substances.

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.

Crystalline or amorphous, water-dispersible alkali aluminosilicates are particularly used as water-insoluble inorganic builder materials. Among these, the crystalline Sodium aluminosilicates of detergent quality, in particular zeolite A, zeolite P, zeolite MAP and optionally zeolite X, are preferred.

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.

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, such as aldehyde starches. Cellulose ethers such as carboxymethylcellulose (sodium salt), methylcellulose, hydroxyalkylcellulose, and mixed ethers such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylcarboxymethylcellulose, and mixtures thereof are preferred.

Furthermore, soil release polymers or soil release polymers, so-called 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. Polymers based on terephthalate-PEG, 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.

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.

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 may 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. Polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), or copolymers of vinylpyrrolidone and vinylimidazole (PVP/PVI) are particularly preferred as dye transfer inhibitors.

Polycarboxylates are particularly suitable as anti-redeposition agents. Suitable materials can be prepared by the polymerization or copolymerization of 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.

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 mechanical 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 have a high proportion of C1a-C24 fatty acids. Suitable non-surfactant foam inhibitors include, for example, organopolysiloxanes and mixtures thereof with microfine, optionally silanized silica, as well as paraffins, waxes, microcrystalline waxes and mixtures thereof with silanized silica or bisfatty acid alkylenediamides. Mixtures of different foam inhibitors, for example those made of 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. Mixtures of paraffins and bistearylethylenediamide are particularly preferred.

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 the context of the present invention, refers to additives or solvents that increase the water solubility of sparingly soluble (hydrophobic) organic compounds. In this case, 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 ^-4 mol/L, preferably greater than 10 ^-3 mol/L and more preferably 10 ^-2 mol/L. The "critical micelle concentration", in accordance with the general understanding in the prior art, is the concentration of the corresponding substance above which it begins to form micelles and each further molecule added to the system is converted into micelles. The hydrotropes used typically have a molecular weight of < 10,000 g/mol, preferably < 2500 g/mol, more preferably < 1000 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 C-1-e 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.

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, glycerol, 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. An alcohol, in particular ethanol and/or glycerin, is particularly preferably used.

Yet another subject of the invention is a method for cleaning and/or caring for textiles comprising the method steps: a) providing a washing solution comprising a textile detergent according to the invention, b) Bringing a textile into contact with the washing solution according to a).

Examples of implementation:

The following composition according to the invention (E1) and comparative composition (V1) were provided.

Table 1

The comparative composition V1 was transparent and exhibited a distinct yellow color. The inventive composition E1 was transparent and exhibited only a slight yellow color (Figure 1).

Claims

Patent claims: 1 . Liquid textile detergent with a pH value in the range of 7.0 to 9.5 at 20 °C containing 0.01 to 10 wt% monoethanolamine; 0.001 to 0.5 wt% sodium disulfite; 10 to 35 wt.% of at least one surfactant. 2. The agent according to claim 1, wherein the agent contains less than 0.5% by weight boric acid, preferably less than 0.1% by weight boric acid, more preferably no boric acid. 3. A composition according to any one of the preceding claims, wherein the composition comprises monoethanolamine in an amount of 0.1 to 3% by weight. 4. A composition according to any one of the preceding claims, wherein the composition comprises sodium disulfite in an amount of 0.04 to 0.1% by weight. 5. A composition according to any one of the preceding claims, wherein the composition comprises surfactant in a total amount of 15 to 30% by weight. 6. Agent according to one of the preceding claims, wherein the surfactant is one or more from the group of anionic surfactants, non-ionic surfactants, amphoteric or zwitterionic surfactants and mixtures thereof. 7. A composition according to any one of the preceding claims, wherein the composition has a pH of 7.8 to 8.8 at 20°C. 8. 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. 9. Agent according to one of the preceding claims, wherein the agent 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, antimicrobial agents, solvents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, phobic and impregnating agents, skin-care active ingredients, swelling and slip-resistant agents, softening components and UV absorbers. 10. A method for cleaning and/or caring for textiles, comprising the process steps: a) providing a washing solution comprising a textile detergent according to one of claims 1 to 9, b) bringing a textile into contact with the washing solution according to a).