WO2021115741A1

WO2021115741A1 - Improved detergent power of color detergents on bleachable stains, preserving color

Info

Publication number: WO2021115741A1
Application number: PCT/EP2020/082464
Authority: WO
Inventors: Mareile Job; Ulrich Pegelow; Christian Kropf; Frank Meier; Simone BERGMANN-DALKILIC
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2019-12-11
Filing date: 2020-11-18
Publication date: 2021-06-17
Also published as: DE102019219295A1

Abstract

Detergent which contains, relative to its total weight, a) 0.01 to 10 wt.% of at least one catechol compound of the formula (I), wherein R¹ and R² independently of each other represent a hydrocarbon group with 1 to 20 carbon atoms, optionally substituted by at least one group selected from hydroxy, (C₁-C₄) alkoxy, (C₁-C₄)alkoxy(CH₂CH₂O)n-, -NR'R'' or -N⁺R'R''R''' X^-, wherein n = 1 to 10, R', R'' and R''' independently of each other represent H or a linear or branched aliphatic hydrocarbon group with 1 to 3, preferably 1 to 2 carbon atoms and X^- is an anion, preferably in an amount of 0.1 to 10 wt.%; b) 0.01 to 5 wt.% of at least one dye transfer inhibitor; c) 5 to 70 wt.% of at least one surfactant; and d) optionally other active substances.

Description

"Improved washing performance of color detergents on bleachable stains without color damage"

The present invention relates to a detergent which comprises at least one catechol compound, at least one color transfer inhibitor and at least one surfactant. The present invention also relates to the use of the detergent for removing bleachable soiling and to a method for washing textiles using the detergent.

In addition to removing odors and, if necessary, scenting the textiles, machine laundry is usually primarily used to remove soiling of the most varied of nature. This cleaning effect of machine laundry is supported by the use of bleaches, surfactants and builders for the washing liquor, with the bleaching agent playing a major role in the removal of colored soiling in particular.

The use of these bleaching agents in the washing process can, in addition to the desired cleaning, also cause an undesirable color reduction (“fading”) of the textiles. A solution to this technical problem is offered by the bleach-free color detergents, which, because they do not use bleach, are gentle on the dyes in the textile, but at the same time are characterized by a reduced cleaning effect. In a further development of this approach, German patent application DE 10201422833 A1 describes the use of dihydroxyterephthalic acid and / or dihydroxyterephthalic acid esters and / or dihydroxyterephthalic acid amides in bleach-free laundry detergents to improve the removal of bleachable soiling.

As a further undesirable side effect of machine washing of textiles, discoloration of the washed textiles can occur. One of the causes of such a discoloration is the deposition of dyes, which were previously removed from textiles of different colors, on a textile surface. In order to avoid these undesirable side effects, detergents, especially if they are intended as so-called color or colored detergents for washing colored textiles, contain dye transfer-inhibiting agents that prevent the detachment of dyes from the textile or at least the deposition of detached dyes in the washing liquor Should avoid textiles. However, many of the polymers commonly used have such a high affinity for dyes that they increasingly pull them off the dyed fibers, so that color losses occur when they are used.

From US Pat. No. 5,534,182 A, dye transfer-inhibiting detergent compositions are known which, in addition to further constituents, contain specific polyethoxylated urethane or acrylamide polymers. The German patent application DE 10 2013 021 276 A1 describes detergent compositions which contain certain sulfonated aldehyde condensates as color transfer-inhibiting active ingredients.

The application was based on the object of providing a textile detergent which, compared with textile detergents of comparable composition, is distinguished by an improved cleaning effect while at the same time being gentle on the color of the textiles.

A first object of the present invention is therefore a detergent containing, based on its total weight a) 0.01 to 10 wt .-% of at least one catechol compound of the formula (I)

in which

R ¹ and R ² independently represent a hydrocarbon radical with 1 to 20 carbon atoms, which is optionally substituted by at least one radical selected from hydroxy, (Ci-C4) -alkoxy, (Ci-C4) -alkoxy (CH2CH20) _n - , -NR ^' R ^" or -N ⁺ R ^' R ^" R ^" X-, where n = 1 to 10, R ^' , R ^" and R ^" independently of one another for H or a linear or branched aliphatic hydrocarbon radical with 1 to 3, preferably 1 to 2 carbon atoms and X- represent an anion, preferably in an amount of 0.1 to 10% by weight; b) 0.01 to 5% by weight of at least one color transfer inhibitor; c) 5 to 70% by weight of at least one surfactant; d) optionally other active ingredients.

A first essential component of the detergents according to the invention is a catechol compound of the formula (I). Catechol compounds have proven to be particularly effective in which in formula (I) the radicals R ¹ and R ² independently of one another represent an alkyl group, an alkoxyalkyl group, a hydroxyalkyl group, a hydroxyalkyloxyalkyl group, (N-hydroxyethyl) aminoethyl, (N- Methoxyethyl) aminoethyl or (N-ethoxyethyl) aminoethyl, or an aromatic group. Further preferred selected compounds from the group of catechols is at least one compound of the general formula (Ia),

in which m and n independently represent 0 to 5 and A and B independently represent a hydrogen atom, —NR ¹ R ² , —N ⁺ R ¹ R ² R ³ X ^_ , and R ¹ , R ² and R ³ independently each other for H or a straight-chain or branched-chain aliphatic hydrocarbon radical having 1 to 3, preferably 1 to 2 carbon atoms and X- are an anion.

Because of their action and availability, among the compounds of the general formula (I-a), preference is given to those in which the radicals R ¹ and R ² in formula (I) are identical.

X- is preferably selected from the group comprising lactate, citrate, tartrate, succinate, perchlorate, tetrafluoroborate, hexafluorophosphate, alkyl sulfonate, alkyl sulfate, hydrogen sulfate, sulfate, dihydrogen phosphate, hydrogen phosphate, phosphate, isocyanate, rhodanide, hydrogen carbonate, fluoride., Carbonate and mixtures of at least two of these selected, the charge balance in the presence of polyvalent anions being ensured by the presence of several cationic backbones of the general formula (I) or optionally by the presence of additional cations such as sodium or ammonium ions.

It is preferred according to the invention if, according to formula (I-a), A and B represent a hydrogen atom.

Highly preferred catechol compounds of the formula (I) are the compounds of the formulas (lb)

An optimal cleaning effect while at the same time being gentle on the color is achieved with detergents which, based on their total weight, contain at least one catechol compound of the formula (I) in Contain quantities from 0.02 to 8% by weight, preferably from 0.05 to 6% by weight and in particular from 0.1 to 5% by weight.

The agents according to the invention contain a color transfer inhibitor as a second essential component. Detergents which, based on their total weight, contain the at least one dye transfer inhibitor in an amount of from 0.02 to 3% by weight, in particular from 0.05 to 1% by weight, are preferred because they are gentle on colors and have good cleaning properties at the same time.

It is preferred to use a polymer or copolymer of cyclic amines, for example a polymer or copolymer of vinylpyrrolidone and / or vinylimidazole, as the color transfer inhibitor. Polymers suitable as color transfer inhibitors are preferably selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI), polyvinylpyridine-N-oxide, poly-N-carboxymethyl-4-vinylpyridium chloride, modified polyethylene glycol Copolymers of vinyl pyrrolidone and vinyl imidazole and mixtures thereof.

Polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI) or copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI) are used with particular preference as color transfer inhibitors.

The polyvinylpyrrolidones (PVP) used preferably have an average molecular weight of 2,500 to 400,000 and are commercially available, for example, from ISP Chemicals as PVP K 15, PVP K 30, PVP K 60 or PVP K 90 or from BASF as Sokalan® HP 50 or Sokalan® HP 53 available. The copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI) used preferably have a molecular weight in the range from 5,000 to 100,000. A PVP / PVI copolymer is commercially available, for example from BASF under the name Sokalan® HP 56. Another group of extremely preferred color transfer inhibitors are polyethylene glycol-modified copolymers of vinylpyrrolidone and vinylimidazole, which, for example, come under the name Sokalan® HP 66 from BASF are available.

The third essential component of detergents according to the invention comes from the group of surfactants. The proportion by weight of the surfactant in the total weight of the detergent is preferably 7 to 65% by weight, in particular 10 to 60% by weight. These proportions by weight have proven to be particularly advantageous in terms of optimizing the cleaning effect and preserving the color.

The group of surfactants includes the nonionic, anionic, cationic and amphoteric surfactants. The detergents according to the invention can be one or more of the include surfactants mentioned. Preferred detergents contain at least one anionic surfactant and / or at least one nonionic surfactant as surfactant. The combination of anionic and nonionic surfactants is very particularly preferred.

The detergents preferably comprise at least one or more anionic surfactants, which are preferably contained in a total amount of 10 to 40% by weight, in particular 12 to 30% by weight, each based on the weight of the liquid composition.

The at least one anionic surfactant is preferably selected from the group comprising Cg-Ci3-alkylbenzenesulfonates, olefin sulfonates, Ci2-Ci8-alkanesulfonates, ester sulfonates, alk (en) yl sulfates, fatty alcohol ether sulfates and mixtures thereof. Detergents which comprise Cg-Ci3-alkylbenzenesulfonates and fatty alcohol ether sulfates as the anionic surfactant have particularly good dispersing properties. Surfactants of the sulfonate type are preferably Cg-Ci3-alkylbenzenesulfonates, olefin sulfonates, that is, mixtures of alkene and hydroxyalkane sulfonates and disulfonates, such as those obtained, for example, from Ci2-Ci8 monoolefins with terminal or internal double bonds by sulfonating with gaseous sulfur trioxide and subsequent alkaline or acidic hydrolysis of the sulfonation products is possible. Ci2-Ci8 alkanesulfonates and the esters of α-sulfo fatty acids (ester sulfonates), for example the α-sulfonated methyl esters of hydrogenated coconut, palm kernel or tallow fatty acids, are also suitable.

The alk (en) yl sulfates are the alkali and especially the sodium salts of the sulfuric acid half-esters of the Ci2-Ci8-fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the Cio-C2o-oxo alcohols and those semi-esters secondary Alcohols of these chain lengths are preferred. For reasons of washing technology, the Ci2-Ci6-alkyl sulfates and Ci2-Cis-alkyl sulfates as well as Cn-Cis-alkyl sulfates are preferred. 2,3-Alkyl sulfates are also suitable anionic surfactants.

The preferred alk (en) yl sulfates are the salts of the sulfuric acid monoesters of fatty alcohols with 12 to 18 carbon atoms, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the oxo alcohols with 10 to 20 carbon atoms and those half esters of secondary alcohols of these chain lengths are preferred. From the point of view of washing technology, the alkyl sulfates with 12 to 16 carbon atoms and alkyl sulfates with 12 to 15 carbon atoms and alkyl sulfates with 14 and 15 carbon atoms are preferred. 2,3-Alkyl sulfates are also suitable anionic surfactants.

Also fatty alcohol ether sulfates, such as the sulfuric acid monoesters of straight-chain or branched C7-C _2i alcohols ethoxylated with 1 to 6 moles of ethylene oxide, such as 2-methyl-branched C9-11 alcohols with an average of 3.5 moles of ethylene oxide (EO) or C12-18 -Fatty alcohols with 1 to 4 EO are suitable. Alkyl ether sulfates with the formula (A-1) are preferred R ¹ -0- (A0) _n -S0 ₃ X ⁺ (A-1)

In this formula (A-1), R ¹ stands for a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, particularly preferably a fatty alcohol radical. Preferred radicals R ^{1 of} the formula (A-1) are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl radicals and mixtures thereof, the Representatives with an even number of carbon atoms are preferred. Particularly preferred radicals R ^{1 of} the formula (A-1) are derived from fatty alcohols with 12 to 18 carbon atoms, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or from oxo alcohols with 10 to 20 carbon atoms .

AO in formula (A-1) represents an ethylene oxide (EO) or propylene oxide (PO) grouping, preferably an ethylene oxide group. The index n of the formula (A-1) is an integer from 1 to 50, preferably from 1 to 20 and in particular from 2 to 10. n is very particularly preferably 2, 3, 4, 5, 6, 7 or 8. X is a monovalent cation or the nth part of an n-valent cation, preferred are the alkali metal ions, including Na ⁺ or K ⁺ , Na ^{+ being} extremely preferred. Other cations X + may be selected from NH ₄ ^+, 1 Zn ^2+, Mg ²⁺ ^1, Ca ²⁺ ¹ ^1/2 Mn ^2+, and mixtures thereof.

Particularly preferred detergents contain an alkyl ether sulfate selected from fatty alcohol ether sulfates of the formula A-2

+

N / A

(A-2) with k = 11 to 19, n = 2, 3, 4, 5, 6, 7 or 8. Very particularly preferred representatives are Na fatty alcohol ether sulfates with 12 to 18 carbon atoms and 2 EO (k = 11 to 13, n = 2 in formula A-1). The stated degree of ethoxylation represents a statistical mean value, which for a specific product can be an integer or a fraction. The stated degrees of alkoxylation represent statistical mean values which, for a specific product, can be an integer or a fraction. Preferred alkoxylates / ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).

In a particularly preferred embodiment, the detergent contains C9-13 alkylbenzenesulfonates and, if appropriate, additionally fatty alcohol ether sulfates as anionic surfactants. It is very particularly preferred if the detergent contains at least one anionic surfactant of the formula (A-3),

(A-3), in the

R ^' and R ^"are independently H or alkyl and together contain 9 to 19, preferably 9 to 15 and in particular 9 to 13 carbon atoms, and Y ^{+ is} a monovalent cation or the nth part of an n-valent cation (in particular Na ⁺ ) mean.

In addition to the anionic surfactant, the detergent can also contain soaps. Saturated and unsaturated fatty acid soaps, such as the salts of lauric acid, myristic acid, palmitic acid, stearic acid, (hydrogenated) erucic acid and behenic acid and, in particular, soap mixtures derived from natural fatty acids, for example coconut, palm kernel, olive oil or tallow fatty acids, are suitable.

The anionic surfactants and the soaps can be in the form of their sodium, potassium or magnesium or ammonium salts. The anionic surfactants are preferably in the form of their ammonium salts, said ammonium ion being derived from at least one said (C2-C6) -alkanolamine. Further preferred counterions for the anionic surfactants are also the protonated forms of choline, triethylamine, monoethanolamine, triethanolamine or methylethylamine.

In summary, those detergents are preferred which contain at least one anionic surfactant, preferably at least one anionic surfactant from the group consisting of C8-18-alkylbenzenesulfonates, Cs-is-olefin sulfonates, Ci2-i8-alkanesulfonates, Cs-ie-ester sulfonates, C8- 18-alkyl sulfates, Cs-ie-alkenyl sulfates, fatty alcohol ether sulfates, in particular at least one anionic surfactant from the group of Cs-is-alkylbenzenesulfonates.

The detergent can (preferably together with at least one anionic surfactant) also have at least one nonionic surfactant. The nonionic surfactant includes alkoxylated fatty alcohols, alkoxylated fatty acid alkyl esters, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ethers, amine oxides, alkyl polyglucosides and mixtures thereof. Again, it is particularly preferred if, based on the weight of the detergent according to the invention, nonionic surfactant is contained in a total amount of 1 to 25% by weight, in particular 2 to 15% by weight. The nonionic surfactant used is preferably alkoxylated, advantageously ethoxylated, especially primary alcohols with preferably 8 to 18 carbon atoms and an average of 4 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 may contain linear and methyl-branched radicals in the mixture, as they are usually present in oxo alcohol radicals. In particular, however, alcohol ethoxylates with linear radicals of alcohols of native origin with 12 to 18 carbon atoms, for example from coconut, palm, tallow or oleyl alcohol, and on average 5 to 8 EO per mole of alcohol are preferred. The preferred ethoxylated alcohols include, for example, C12-14 alcohols with 4 EO or 7 EO, C9-11 alcohol with 7 EO, C13-15 alcohols with 5 EO, 7 EO or 8 EO, Ci2-Ci8 alcohols with 5 EO or 7 EO and mixtures of these. The stated degrees of ethoxylation represent statistical mean values which, for a specific product, can be an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples are tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO. Nonionic surfactants which contain EO and PO (propylene oxide) groups together in the molecule can also be used according to the invention. Also suitable are a mixture of a (more) branched ethoxylated fatty alcohol and an unbranched ethoxylated fatty alcohol, such as, for example, a mixture of a Ci6-Ci8 fatty alcohol with 7 EO and 2-propylheptanol with 7 EO. The washing, cleaning, aftertreatment or washing aid particularly preferably contains a Ci2-Cis fatty alcohol with 7 EO or a Ci3-Cis oxo alcohol with 7 EO as a nonionic surfactant.

The detergent particularly preferably contains at least one nonionic surfactant according to formula (N-1) R ³ -0- (A0) _m -H is contained in the

R ^{3 stands} for a linear or branched Cs-Cis-alkyl radical, an aryl radical or alkylaryl radical,

AO independently of one another represent an ethylene oxide (EO) or propylene oxide (PO) grouping, m represent integers from 1 to 50.

In the above formula (N-1), R ¹ stands for a linear or branched, substituted or unsubstituted alkyl radical. In a preferred embodiment of the present invention, R ^{1 is} a linear or branched alkyl radical with 5 to 30 carbon atoms, preferably with 7 to 25 carbon atoms and in particular with 10 to 19 carbon atoms. Preferred radicals R ¹ are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl radicals and mixtures thereof, the representatives with an even number of carbon atoms being preferred . Particularly preferred radicals R ¹ are derived from fatty alcohols with 12 to 19 carbon atoms, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or from oxo alcohols with 10 to 19 carbon atoms. AO of the formula (N-1) is an ethylene oxide (EO) or propylene oxide (PO) grouping, preferably an ethylene oxide grouping. The index m of the formula (N-1) is an integer from 1 to 50, preferably 2 to 20 and preferably 2 to 10. In particular, m is 3, 4, 5, 6 or 7. The agent according to the invention can be mixtures of nonionic surfactants contain, which have different degrees of ethoxylation. Surfactants with degrees of alkoxylation / ethoxylation of at least 5 are preferred.

Particularly preferred fatty alcohol alkoxylates are those of the formula

(N-2) with k = 9 to 17, m = 3, 4, 5, 6 or 7. Very particularly preferred representatives are fatty alcohols with 10 to 18 carbon atoms and with 7 EO (k = 11-17, m = 7 in Formula N-2).

Corresponding fatty alcohol or oxo alcohol ethoxylates are available under the trade names Dehydol LT7 ^® (BASF) Lutensol ^® A07 (BASF) Lutensol ^® M7 (BASF), and Neodol ^® 45-7 (Shell Chemicals).

In summary, those detergents are preferred which contain at least one nonionic surfactant from the group of ethoxylated primary Cs-is alcohols, preferably the Ci ₂ -i ₄ alcohols with 4 EO or 7 EO, the Cg alcohols with 7 EO, the Ci3-i5-alcohols containing 5 EO, 7 EO or 8 EO, the Ci3- ₁₅ oxo alcohols with 7 EO, of Ci2-is-alcohols having 5 EO or 7 EO, in particular Ci2-i8 fatty alcohols with 7 EO, or the Ci3- contain ₁₅ oxo alcohols containing 7 EO.

The builders form a further group of optional components. Preferred detergents also contain, based on their total weight, 10 to 45% by weight, preferably 20 to 42% by weight and in particular 30 to 40% by weight of builder.

Builders that may be contained in the detergent according to the invention include, in particular, silicates, aluminum silicates (especially zeolites), carbonates, salts of organic di- and polycarboxylic acids and mixtures of these substances. Organic builders are particularly suitable as additional builders, for example the polycarboxylic acids which can be used in the form of their sodium salts or also as acids, polycarboxylic acids being understood as meaning those carboxylic acids which carry more than one acid function. For example, these are adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, in particular glutamic acid-N, N-diacetic acid (GLDA) and methylglycine-N, N-diacetic acid (MGDA), as well as mixtures of these. Polymeric polycarboxylates are also suitable as builders. These are, for example Alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those with a relative molecular weight of 600 to 750,000 g / mol. Suitable polymers are in particular polyacrylates, which preferably have a molecular weight of 1,000 to 15,000 g / mol. Because of their superior solubility, the short-chain polyacrylates from this group, which have molar masses from 1,000 to 10,000 g / mol, and particularly preferably from 1,000 to 5,000 g / mol, may in turn be preferred. Copolymers of polycarboxylates, in particular those of acrylic acid with methacrylic acid and acrylic acid or methacrylic acid with maleic acid, are also suitable. To improve the water solubility, the polymers can also contain allylsulfonic acids, such as allyloxybenzenesulfonic acid and methallylsulfonic acid, as monomers. In liquid detergents, preference is given to using soluble builders, such as acrylic polymers with a molar mass of 1,000 to 5,000 g / mol.

Preferred detergents contain one or more enzyme preparation (s) as a further optional component. The proportion by weight of the enzyme preparation in the total weight of the detergent is preferably 0.1 to 10% by weight, more preferably 0.2 to 8% by weight and in particular 0.4 to 6% by weight.

The enzyme of the enzyme preparation is preferably selected from protease, amylase, lipase, mannanase, cellulase, pectate lyase or mixtures thereof.

The enzymes contained in the detergents according to the invention can be adsorbed on carrier substances and / or embedded in coating substances in order to protect them against premature inactivation.

In addition to the aforementioned active ingredients, the detergent according to the invention preferably contains further active ingredients, in particular active ingredients selected from the group of electrolytes, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, silicone oils, antiredeposition agents, graying inhibitors, antifreeze agents, anti-crease agents, antimicrobial agents, dye transfer inhibitors , Fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bitter agents, ironing aids, phobic and impregnating agents, swelling and anti-slip agents, plasticizing components and UV absorbers.

To improve the color protection effect, the detergents contain, based on their total weight, preferably less than 5% by weight, preferably less than 2% by weight and in particular no bleaching agent, in particular oxygen bleaching agent.

Detergent according to one of the preceding points, wherein the detergent, based on its total weight, is less than 15% by weight, preferably less than 8% by weight and in particular contains less than 3% by weight organic solvent. The group of these organic solvents includes, in particular, 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 methyl ether, ethylene glycol propyl ether, ethylene glycol 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, methoxy triglycol, ethoxy triglycol, butoxy triglycol, 1-butoxyethoxy-2-propanol, 1-butoxyethoxy-2-propanol, n-butoxyethoxy-2-propanol, 3-methoxybutyl ether, propanol-n-butoxy-2-butanol, propanol-n-butoxy-2-propanol, t-butoxyethoxy-2-propanol, n-butoxy-3-propanol, propylene-butoxy-2-propanol, n-butoxy-3-propanol, propylene-methoxy-3-butoxy-2-propanol, n-butoxy-3-propanol, dipropylene glycol monomethyl ether, dipropylene glycol mono as well as their mixtures.

The detergents preferably have a pH (1% solution in H2O, 20 ° C.) of 3 to 11.5, preferably 5 to 9.

The composition of some preferred detergents can be found in the following tables (data in% by weight based on the total weight of the agent, unless otherwise stated). These detergents are preferably solid and contain 10 to 45% by weight of builder.

* from the group polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI) or copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI)

The detergents according to the invention can be solid or liquid detergents. However, detergents in solid form are preferred, preferably in the form of powders or granules or tablets.

The detergents according to the invention can be packaged as independent detergents or combined with other solid or liquid detergents to form a multi-component detergent. Multi-component detergents, comprising a detergent according to the invention and at least one further component separate and different from this detergent, are preferred because of the greater degrees of freedom in their formulation and their striking appearance. In an exemplary multi-component detergent, the further component is in the form of a liquid, powder or granulate.

It is particularly preferred if the components of the multi-component detergent are present separately from one another in a multi-chamber pouch, preferably in a water-soluble multi-chamber pouch based on polyvinyl alcohol.

The multi-chamber pouch comprises at least two spatially separated chambers, for example 2, 3, 4, 5, 6 or 7 chambers. These chambers are separated from one another in such a way that the compositions contained do not come into contact with one another. This separation can be done, for example, by a wall made of the same material as the container itself.

Preferred water-soluble materials preferably comprise at least partially at least one substance from the group consisting of (acetalized) polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, gelatin, sulphate, carbonate and / or citrate-substituted polyvinyl alcohols, polyalkylene oxides, acrylamides, cellulose esters, cellulose ethers, cellulose amides, cellulose, polyvinyl acetates , Polycarboxylic acids and their salts, polyamino acids or peptides, polyamides, polyacrylamides, copolymers of maleic acid and acrylic acid, copolymers of acrylamides and (meth) acrylic acid, polysaccharides such as starch or guar derivatives, gelatine and, under the INCI names Polyquaternium 2, Polyquaternium 17 , Polyquaternium 18 and Polyquaternium 27. A polyvinyl alcohol is particularly preferred as the water-soluble material.

This application also relates to a method for machine textile cleaning, in the course of which one of the detergents or multi-component detergents described above is introduced into the aqueous washing liquor of a textile washing machine. The preferred embodiments of the detergents or multi-component detergents used in this process correspond to the embodiments described above. To avoid repetition, reference is made at this point to the descriptions there.

A final subject of this application is the use of one of the detergents or multi-component detergents described above to improve the color retention in machine textile cleaning. The preferred embodiments of the detergents or multicomponent detergents used in this sense correspond to the embodiments described above. To avoid repetition, reference is made at this point to the descriptions there.

This registration provides the following items, among others: Detergent containing, based on its total weight a) 0.01 to 10% by weight of at least one catechol compound of the formula (I)

in which

R ¹ and R ² independently represent a hydrocarbon radical with 1 to 20 carbon atoms, which is optionally substituted by at least one radical selected from hydroxy, (Ci-C4) -alkoxy, (Ci-C4) -alkoxy (CH2CH20) _n - , -NR ^' R ^" or -N ⁺ R ^' R ^" R ^" X-, where n = 1 to 10, R ^' , R ^" and R ^" independently of one another for H or a linear or branched aliphatic hydrocarbon radical with 1 to 3, preferably 1 to 2 carbon atoms and X- represent an anion, preferably in an amount of 0.1 to 10% by weight; b) 0.01 to 5% by weight of at least one color transfer inhibitor; c) 5 to 70% by weight of at least one surfactant; d) optionally other active ingredients. Detergent according to item 1, where in formula (I) the radicals R ¹ and R ² independently represent an alkyl group, an alkoxyalkyl group, a hydroxyalkyl group, a hydroxyalkyloxyalkyl group, (N-hydroxyethyl) aminoethyl, (N-methoxyethyl) aminoethyl or (N-ethoxyethyl) aminoethyl, or an aromatic group. Detergent according to one of the preceding points, where in formula (I) the radicals R ¹ and R ^{2 are the} same. Detergent according to one of the preceding points, wherein the detergent, based on its total weight, contains the at least one catechol compound of the formula (I) in amounts from 0.02 to 8% by weight, preferably from 0.05 to 6% by weight and in particular contains from 0.1 to 5% by weight. Detergent according to one of the preceding points, wherein the detergent, based on its total weight, contains the at least one color transfer inhibitor in an amount of 0.02 to 3% by weight, in particular 0.05 to 1% by weight. Detergent according to one of the preceding points, the color transfer inhibitor being selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI), polyvinylpyridine-N-oxide, poly-N-carboxymethyl-4- vinyl pyridium chloride, polyethylene glycol-modified copolymers of vinyl pyrrolidone and vinyl imidazole, and mixtures thereof. Detergent according to one of the preceding points, wherein the color transfer inhibitor is selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI) or the copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI). Detergent according to one of the preceding points, wherein the detergent, based on its total weight, contains the at least one surfactant in an amount of 7 to 65% by weight, in particular 10 to 60% by weight. Detergent according to one of the preceding points, wherein at least one anionic surfactant and / or at least one nonionic surfactant is contained as the surfactant. Detergent according to one of the preceding points, wherein the surfactant is at least one anionic surfactant, preferably at least one anionic surfactant from the group consisting of Ce-ie-alkylbenzene sulfonates, Cs-is-olefin sulfonates, Ci2-i8-alkanesulfonates, Cs-ie-ester sulfonates, C8 -18-alkyl sulfates, Cs-ie-alkenyl sulfates, fatty alcohol ether sulfates, in particular at least one anionic surfactant from the group of the Cs-is-alkylbenzenesulfonates. Detergent according to one of the preceding points, wherein the surfactant is at least one nonionic surfactant from the group of ethoxylated primary Cs-is alcohols, preferably the Ci ₂ -i ₄ alcohols with 4 EO or 7 EO, the Cg-n alcohols with 7 EO, the Ci3-i5-alcohols containing 5 EO, 7 EO or 8 EO, the Ci3- ₁₅ oxo alcohols with 7 EO, the Ci2-i8-alcohols having 5 EO or 7 EO, in particular Ci2-i8 fatty alcohols with 7 EO or Ci3- ₁₅ oxo alcohols is included with 7 EO. Detergent according to one of the preceding points, wherein the detergent, based on its total weight, furthermore contains 10 to 45% by weight, preferably 20 to 42% by weight and in particular 30 to 40% by weight of builder. Detergent according to one of the preceding points, wherein the detergent, based on its total weight, furthermore contains 0.1 to 10% by weight, preferably 0.2 to 8% by weight and in particular 0.4 to 6% by weight of the enzyme preparation . Detergent according to one of the preceding points, wherein the detergent, based on its total weight, contains less than 5% by weight, preferably less than 2% by weight and in particular no oxygen bleaching agent. Detergent according to one of the preceding points, wherein the detergent is in solid form, preferably as a powder or granules. Detergent according to one of the preceding points, the detergent containing, based on its total weight, less than 15% by weight, preferably less than 8% by weight and in particular less than 3% by weight of organic solvent. Detergent according to one of the preceding points, the detergent having a pH (1% solution in H2O, 20 ° C.) of 3 to 11.5, preferably 5 to 9. Multi-component detergent, comprising a detergent according to one of the preceding points and at least one further component which is separate and different from this detergent. Multi-component detergent according to item 18, wherein the further component as

Liquid, powder or granules are present. Multi-component detergent according to one of items 18 or 19, the components of the multi-component detergent being present separately from one another in a multi-chamber pouch, preferably in a water-soluble multi-chamber pouch based on polyvinyl alcohol. Process for machine textile cleaning, in the course of which a detergent or a

Multi-component detergent according to one of the previous points in the aqueous

Washing liquor is introduced into a textile washing machine. Use of a detergent or a multi-component detergent according to any one of items 1 to 20 to improve the color retention in machine textile cleaning.

Claims

Patent claims:

1. Detergent containing, based on its total weight a) 0.01 to 10 wt .-% of at least one catechol compound of the formula (I)

in which

2. Detergent according to claim 1, wherein in formula (I) the radicals R ¹ and R ² independently of one another for an alkyl group, an alkoxyalkyl group, a hydroxyalkyl group, a hydroxyalkyloxyalkyl group, (N-hydroxyethyl) aminoethyl, (N-methoxyethyl) -aminoethyl or (N-ethoxyethyl) -aminoethyl, or an aromatic group.

3. Detergent according to one of the preceding claims, wherein in formula (I) the radicals R ¹ and R ^{2 are the} same.

4. Detergent according to one of the preceding claims, wherein the detergent, based on its total weight, contains the at least one catechol compound of the formula (I) in amounts from 0.02 to 8% by weight, preferably from 0.05 to 6% by weight and in particular from 0.1 to 5% by weight.

5. Detergent according to one of the preceding claims, wherein the detergent, based on its total weight, contains the at least one color transfer inhibitor in an amount of 0.02 to 3% by weight, in particular 0.05 to 1% by weight.

6. Detergent according to one of the preceding claims, wherein the color transfer inhibitor is selected from the group polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI), copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI), polyvinylpyridine-N-oxide, poly-N-carboxymethyl 4-vinylpyridium chloride, polyethylene glycol-modified copolymers of vinylpyrrolidone and vinylimidazole, and mixtures thereof.

7. Detergent according to one of the preceding claims, wherein the color transfer inhibitor is selected from the group consisting of polyvinylpyrrolidone (PVP), polyvinylimidazole (PVI) or the copolymers of vinylpyrrolidone and vinylimidazole (PVP / PVI).

8. Detergent according to one of the preceding claims, wherein the detergent, based on its total weight, contains the at least one surfactant in an amount of 7 to 65% by weight, in particular 10 to 60% by weight.

9. A method for automatic textile cleaning, in the course of which a detergent or a multi-component detergent according to one of the preceding claims is introduced into the aqueous washing liquor of a textile washing machine.

10. Use of a detergent or a multicomponent detergent according to any one of claims 1 to 8 to improve the color retention in machine textile cleaning.