DE102016217291A1 - Acceleration of laundry drying - Google Patents

Abstract

The drying time of launded and optionally spun textiles should be shortened. This was achieved essentially by the use of copolymers obtainable from at least one cationic ethylenically unsaturated monomer and at least one nonionic ethylenically unsaturated monomer in washing processes using an aqueous liquor, wherein the copolymer contained in the aqueous liquor.

Description

The present invention relates to the use of certain polymers to reduce the drying time of laundered fabrics.

For washed textiles, after washing, the water used for them must be removed. Part of the adhering water can be removed by the action of mechanical forces, the so-called spin. However, it is not all textiles that can be thrown, and also thrown items of laundry are usually not so dry that they can be easily stored or re-worn. For further drying, the wet, optionally spun textiles are usually hung on a clothesline or treated in a tumble dryer. In the second variant, it is readily apparent that the length of time required for a desired drying result is directly related to energy consumption. But even when drying on a leash, it is desirable to keep the necessary time as short as possible.

It has been proposed on various occasions to provide an accelerated drying of the laundry by ingredients of a laundry aftertreatment agent to be applied after the washing process. However, not all consumers use laundry after-treatment. Although it is possible in individual cases to achieve the textile softness desired by the use of a softening wash-off agent and the fragrance impression of the laundry resulting from the fabric softener, at least partially by specifically adapting the ingredients of a detergent and dispensing with the fabric softener, the further reduction of the drying time is even without the use of laundry aftertreatment, a goal.

From the international patent application WO 2013/033508 A1 A method for reducing the drying time of the textile by applying linear N (CH ₂ CH (OH) CH ₂ Cl) ₂ -type linear polyethers to fabrics during washing is known.

Surprisingly, it has now been found that substances which are very different from such polyethers, lead to drying time reductions when used in manually or mechanically executed textile washing step and / or post-treatment step.

The invention relates to the use of copolymers which are obtainable from at least one cationic ethylenically unsaturated monomer and at least one nonionic ethylenically unsaturated monomer, in particular mechanical washing processes using an aqueous liquor, in particular detergent-containing, to shorten the drying time of the textiles which have subsequently been washed.

The invention further provides a process for shortening the drying time, in particular mechanically laundered textiles, comprising washing soiled textiles in an aqueous wash liquor containing laundry detergent, single or multiple rinsing of the textiles with water and / or an aqueous aftertreatment liquor containing laundry aftertreatment agents for the removal of the laundry-containing liquor from the textile, wherein a copolymer obtainable from at least one cationic ethylenically unsaturated monomer and at least one nonionic ethylenically unsaturated monomer is a constituent of the wash liquor and / or aftertreatment liquor, spinning the laundry and then drying it.

The above-mentioned copolymers are used particularly effectively in mechanical processes and / or in the wash liquor; the effect caused by these copolymers is greater when the fabrics are spun after being contacted with the copolymer. In preferred embodiments of the invention, therefore, the abovementioned copolymer is used in an aqueous wash-containing wash liquor; It can be dispensed with the addition of such copolymer in the aftertreatment liquor, especially if no aftertreatment agent such as a fabric softener is used.

Preferred textiles to which the use according to the invention refers or which are used in the process according to the invention are those of cellulose-containing material. Cellulosic materials from which preferred textiles to be treated are made include cotton, regenerated cellulosic fibers such as modal or lyocel, and blended fabrics of cotton or regenerated cellulose with other apparel-grade materials such as polyester and polyamide.

The copolymers used according to the invention can be prepared in a simple way by free-radical polymerization of the ethylenically unsaturated monomers, which can be conducted as a block, graft or random copolymerization; preferred are copolymers obtainable by random copolymerization. They have except for the two monomer types mentioned units on no other units, which may be due to the preparation of the polymer ends from the radical starter units present.

In the copolymer essential to the invention, the cationic monomers and nonionic monomers are preferably present in molar ratios in the range from 80: 1 to 1:80, in particular from 10: 1 to 1:10 and particularly preferably from 50:50. The copolymeric active ingredient preferably has an average molecular weight (here and below in the case of average molecular weight data: number average) in the range from 1 × 10 ⁴ g / mol to 1 × 10 ⁹ g / mol, in particular from 1 × 10 ⁵ g / mol to 1 × 10 ⁷ g / mol on.

The monomers used to prepare the copolymer essential to the invention may be monounsaturated or polyethylenically unsaturated.

The nonionic monomers are preferably selected from the acrylic acid and methacrylic acid esters and amides and mixtures of at least two such monomers. Examples of these are methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl and iso-propyl acrylate and methacrylate, methyl and ethyl oligooxyethyl acrylates and methacrylates, in which the degree of oligomerization of the oxyethyl groups is 1 to 5, acrylamide, methacrylamide, N- Monoalkylacrylamides and -methacrylamides such as N-methylacrylamide, N-methylmethacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, N-hydroxyethylacrylamide, N-hydroxyethylmethacrylamide, N-hydroxypropylacrylamide, N-hydroxypropylmethacrylamide and dialkylacrylamides and -methacrylamides such as N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N, N-diethylacrylamide, N, N-diethylmethacrylamide, and mixtures thereof.

The cationic monomers are preferably selected from those bearing at least one acrylic, vinyl, allyl and / or maleyl group and at least one quaternary ammonium group, and mixtures of at least two such monomers. Examples of these are trimethylammoniumethylacrylate, trimethylammoniumethylmethacrylate, trimethylammoniumpropylacrylate, trimethylammoniumpropylmethacrylate, trimethylammoniumethylacrylamide, trimethylammoniumethylmethacrylamide trimethylammoniumpropylacrylamide, trimethylammoniumpropylmethacrylamide, which are present with customary counteranions such as chloride, dimethyldiallylammonium chloride, and mixtures thereof.

Particularly preferred are copolymers of acrylamide and diallyldimethylammonium chloride. Such copolymers are available for example under the names Noverite ^® 302 and Noverite ^® 304 commercially.

The use of the invention achieves a reduced residual moisture content of the laundry after the washing process, in particular after a spin-drying operation following the washing, and thus an overall faster drying of the laundry. When using a tumble dryer with detection of the residual moisture of the laundry results in a lower energy consumption due to the reduced humidity of the introduced into the dryer laundry. The use of the invention thus has financial as well as time advantages.

The process according to the invention is carried out by bringing textiles, in particular cellulose-containing material, into contact with an aqueous preparation which contains the copolymer essential to the invention. This can be done in the context of an otherwise usual washing process, which is carried out with the aid of a household washing machine. In this case, the copolymer can be used in an aqueous liquor in the rinsing step, that is to say after the actual washing step; however, it is preferably used in the washing step. The copolymer may be part of washing detergents and / or laundry aftertreatment agents, such as softeners, which are commonly used in machine wash processes. The concentration of the copolymer in the aqueous liquor of the wash cycle and / or the final rinse cycle is preferably 0.1 g / l to 5 g / l, in particular 0.25 g / l to 2.5 g / l. When the copolymer is used in the wash cycle, the fabric preferably remains in contact with the copolymer-containing liquor during the wash cycle, preferably for a period of 10 minutes to 180 minutes, in particular 20 minutes to 90 minutes. When the copolymer is used in the rinse cycle, the textile remains during the rinse cycle preferably over a period of 1 minute to 30 minutes, in particular 5 minutes to 20 minutes in contact with the copolymer-containing liquor. Preferably, the textile is spun after the rinse cycle, wherein the total centrifugal time when subjected to a centrifugal force in the range of 4 kN / kg · m to 6 kN / kg · m is preferably 1 minute to 20 minutes, especially 8 minutes to 12 minutes

All percentages given in connection with the compositions described herein, unless explicitly stated otherwise, relate to% by weight, in each case based on the composition in question.

In preferred embodiments of the invention, the copolymer essential to the invention is used as constituent of a washing agent which contains from 2% by weight to 60% by weight, in particular from 6% by weight to 30% by weight, of the copolymer, or as constituent of a laundry aftertreatment agent, which contains from 3% by weight to 100% by weight, in particular from 8% by weight to 85% by weight, of the copolymer. Laundry or laundry aftertreatment agents, which also include laundry care products containing the active ingredient used according to the invention or used together or used in the process according to the invention, are solid or preferably liquid and can, for example, as a single dose (for example, packed in bags of water-soluble or water-dispersible Material) are present. Examples of specific agents in which the copolymers essential to the invention can be used are liquid detergents and fabric softeners.

Detergents, laundry aftertreatment or laundry care products may contain customary other constituents of such agents which do not interact in an undesired manner with the copolymer essential to the invention

A detergent preferably contains synthetic anionic surfactants of the sulfate or sulfonate type, in amounts of preferably not more than 20 wt .-%, in particular from 0.1 wt .-% to 18 wt .-%, each based on the total agent. Suitable synthetic anionic surfactants which are particularly suitable for use in such compositions are the alkyl and / or alkenyl sulfates having 8 to 22 C atoms which carry an alkali, ammonium or alkyl or hydroxyalkyl-substituted ammonium ion as counter cation. Preference is given to the derivatives of the fatty alcohols having in particular 12 to 18 carbon atoms and their branched-chain analogs, the so-called oxo alcohols. The alkyl and alkenyl sulfates can be prepared in a known manner by reaction of the corresponding alcohol component with a conventional sulfating reagent, in particular sulfur trioxide or chlorosulfonic acid, and subsequent neutralization with alkali metal, ammonium or alkyl or hydroxyalkyl-substituted ammonium bases. The sulfate-type surfactants which can be used with particular preference include the abovementioned sulfated alkoxylation products of the alcohols mentioned, so-called ether sulfates. Such ether sulfates preferably contain from 2 to 30, in particular from 4 to 10, ethylene glycol groups per molecule. Suitable anionic surfactants of the sulfonate type include the α-sulfoesters obtainable by reaction of fatty acid esters with sulfur trioxide and subsequent neutralization, in particular those of fatty acids having 8 to 22 C atoms, preferably 12 to 18 C atoms, and linear alcohols having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, derivative sulfonation, as well as the formal saponification resulting from these sulfo fatty acids. The anionic surfactants which can be used also include the salts of sulfosuccinic acid esters, which are also referred to as alkylsulfosuccinates or dialkylsulfosuccinates, and which are monoesters or diesters of sulfosuccinic acid with alcohols, preferably fatty alcohols and in particular ethoxylated fatty alcohols. Preferred sulfosuccinates contain C ₈ to C ₁₈ fatty alcohol residues or mixtures of these. Particularly preferred sulfosuccinates contain an ethoxylated fatty alcohol radical, which in itself is a nonionic surfactant. Sulfosuccinates, whose fatty alcohol residues are derived from ethoxylated fatty alcohols with a narrow homolog distribution, are again particularly preferred. Another synthetic anionic surfactant is alkylbenzenesulfonate in question.

Another embodiment of the compositions comprises the presence of nonionic surfactant selected from fatty alkyl polyglycosides, fatty alkyl polyalkoxylates, in particular ethoxylates and / or propoxylates, fatty acid polyhydroxyamides and / or ethoxylation and / or propoxylation products of fatty alkylamines, vicinal diols, fatty acid alkyl esters and / or fatty acid amides and the like Mixtures, in particular in an amount in the range of 2% by weight to 25% by weight.

Suitable nonionic surfactants include the alkoxylates, in particular the ethoxylates and / or propoxylates of saturated or mono- to polyunsaturated linear or branched-chain alcohols having 10 to 22 C atoms, preferably 12 to 18 C atoms. The degree of alkoxylation of the alcohols is generally between 1 and 20, preferably between 3 and 10. They can be prepared in a known manner by reacting the corresponding alcohols with the corresponding alkylene oxides. Particularly suitable are the derivatives of fatty alcohols, although their branched-chain Isomers, especially so-called oxo alcohols, can be used to prepare useful alkoxylates. Useful are accordingly the alkoxylates, in particular the ethoxylates, primary alcohols with linear, in particular dodecyl, tetradecyl, hexadecyl or octadecyl radicals and mixtures thereof. In addition, suitable alkoxylation products of alkylamines, vicinal diols and carboxamides, which correspond to the said alcohols with respect to the alkyl part, usable. In addition, the ethylene oxide and / or propylene oxide insertion products of fatty acid alkyl esters and Fettsäurepolyhydroxyamide into consideration. So-called alkylpolyglycosides which are suitable for incorporation in the compositions according to the invention are compounds of the general formula (G) _n -OR ¹² , in which R ^{12 is} an alkyl or alkenyl radical having 8 to 22 C atoms, G is a glycose unit and n is a number between 1 and 10 mean. The glycoside component (G) _n are oligomers or polymers of naturally occurring aldose or ketose monomers, in particular glucose, mannose, fructose, galactose, talose, gulose, altrose, allose, idose, ribose, arabinose, Include xylose and lyxose. The oligomers consisting of such glycosidically linked monomers are characterized not only by the nature of the sugars contained in them by their number, the so-called Oligomerisierungsgrad. The degree of oligomerization n assumes as the value to be determined analytically generally broken numerical values; it is between 1 and 10, with the glycosides preferably used below a value of 1.5, in particular between 1.2 and 1.4. Preferred monomer building block is glucose because of its good availability. The alkyl or alkenyl moiety R ^{12 of} the glycosides preferably also originates from readily available derivatives of renewable raw materials, in particular from fatty alcohols, although their branched-chain isomers, in particular so-called oxoalcohols, can also be used for the preparation of useful glycosides. Accordingly, the primary alcohols having linear octyl, decyl, dodecyl, tetradecyl, hexadecyl or octadecyl radicals and mixtures thereof are particularly suitable. Particularly preferred alkyl glycosides contain a Kokosfettalkylrest, that is, mixtures having substantially R ¹² = dodecyl and R ¹² = tetradecyl.

Nonionic surfactant is preferably included in the compositions in amounts of from 1% to 30% by weight, especially from 1% to 25% by weight, with amounts in the upper part of this range being more likely to be found in liquid agents and particulate agents preferably contain lower amounts of up to 5% by weight.

Other optional surface-active ingredients are soaps, suitable being saturated fatty acid soaps, such as the salts of lauric acid, myristic acid, palmitic acid or stearic acid, and soaps derived from natural fatty acid mixtures, for example coconut, palm kernel or tallow fatty acids. In particular, those soap mixtures are preferred which are composed of 50% to 100% by weight of saturated C ₁₂ -C ₁₈ fatty acid soaps and up to 50% by weight of oleic acid soap. Preferably, soap is included in amounts of from 0.1% to 5% by weight. In particular, in liquid agents containing an active ingredient according to the invention, however, higher amounts of soap can be contained, usually up to 20 wt .-%.

If desired, the compositions may also contain betaines and / or cationic surfactants, which, if present, are preferably used in amounts of from 0.5% by weight to 7% by weight. Among these, esterquats are particularly preferred.

If desired, the compositions may contain peroxygen bleaching agents, in particular in amounts ranging from 5% to 70% by weight, and optionally bleach activators, especially in amounts ranging from 2% to 10% by weight. The bleaches in question are preferably the peroxygen compounds generally used in detergents, such as percarboxylic acids, for example dodecanedioic acid or phthaloylaminoperoxicaproic acid, hydrogen peroxide, alkali metal perborate, which may be present as tetra- or monohydrate, percarbonate, perpyrophosphate and persilicate, which are generally used as alkali metal salts, in particular as sodium salts. Such bleaching agents are in detergents which contain a copolymer used according to the invention, preferably in amounts of up to 25 wt .-%, in particular up to 15 wt .-% and particularly preferably from 5 wt .-% to 15 wt .-%, each based on total agent, present, in particular percarbonate is used. The optionally present component of the bleach activators comprises the commonly used N- or O-acyl compounds, for example polyacylated alkylenediamines, in particular tetraacetylethylenediamine, acylated glycolurils, in particular tetraacetylglycoluril, N-acylated hydantoins, hydrazides, triazoles, urazoles, diketopiperazines, sulphurylamides and cyanurates, and also carboxylic anhydrides , in particular phthalic anhydride, carboxylic acid esters, in particular sodium isononanoylphenolsulfonat, and acylated sugar derivatives, in particular pentaacetylglucose, as well as cationic nitrile derivatives such as trimethylammoniumacetonitrile salts. The bleach activators may have been coated and / or granulated in a known manner with coating substances to avoid interaction with the peroxygen compounds during storage, with the aid of carboxymethylcellulose granulated tetraacetylethylenediamine having mean particle sizes of from 0.01 mm to 0.8 mm, granulated 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine, and / or trialkylammonium acetonitrile formulated in particulate form is particularly preferred. In detergents derar term bleach activators are preferably in amounts of up to 8 wt .-%, in particular from 2 wt .-% to 6 wt .-%, each based on the total agent included.

In a further embodiment, the composition contains water-soluble and / or water-insoluble builder, in particular selected from alkali metal aluminosilicate, crystalline alkali metal silicate with modulus above 1, monomeric polycarboxylate, polymeric polycarboxylate and mixtures thereof, in particular in amounts ranging from 2.5 wt .-% to 60 wt .-%.

The water-soluble organic builder substances include, in particular, those from the class of polycarboxylic acids, in particular citric acid and sugar acids, as well as the polymeric (poly) carboxylic acids, in particular the polycarboxylates obtainable by oxidation of polysaccharides, polymeric acrylic acids, methacrylic acids, maleic acids and mixed polymers thereof, which also small amounts of polymerizable substances without carboxylic acid functionality may contain polymerized. The relative molecular mass of the homopolymers of unsaturated carboxylic acids is generally between 5000 g / mol and 200,000 g / mol, that of the copolymers between 2000 g / mol and 200,000 g / mol, preferably 50,000 g / mol to 120,000 g / mol, based on the free acid , A particularly preferred acrylic acid-maleic acid copolymer has a molecular weight of 50,000 g / mol to 100,000 g / mol. Suitable, although less preferred, compounds of this class are copolymers of acrylic or methacrylic acid with vinyl ethers, such as vinylmethyl ethers, vinyl esters, ethylene, propylene and styrene, in which the acid content is at least 50% by weight. Terpolymers which contain two carboxylic acids and / or salts thereof as monomers and also vinyl alcohol and / or a vinyl alcohol derivative or a carbohydrate as the third monomer may also be used as water-soluble organic builder substances. The first acidic monomer or its salt is derived from a monoethylenically unsaturated C ₃ -C ₈ -carboxylic acid and preferably from a C ₃ -C ₄ -monocarboxylic acid, in particular from (meth) acrylic acid. The second acidic monomer or its salt may be a derivative of a C ₄ -C ₈ dicarboxylic acid, with maleic acid being particularly preferred. The third monomeric unit is formed in this case of vinyl alcohol and / or preferably an esterified vinyl alcohol. In particular, preferred are vinyl alcohol derivatives which are an ester of short-chain carboxylic acids, for example C ₁ -C ₄ carboxylic acids, with vinyl alcohol. Preferred terpolymers contain from 60% by weight to 95% by weight, in particular from 70% by weight to 90% by weight, of (meth) acrylic acid and / or (meth) acrylate, particularly preferably acrylic acid and / or acrylate, and maleic acid and / or maleate and 5 wt .-% to 40 wt .-%, preferably 10 wt .-% to 30 wt .-% of vinyl alcohol and / or vinyl acetate. Very particular preference is given to terpolymers in which the weight ratio of (meth) acrylic acid and / or (meth) acrylate to maleic acid and / or maleate is between 1: 1 and 4: 1, preferably between 2: 1 and 3: 1 and in particular 2: 1 and 2.5: 1. Both the amounts and the weight ratios are based on the acids. The second acidic monomer or its salt may also be a derivative of an allylsulfonic acid which is in the 2-position with an alkyl radical, preferably with a C ₁ -C ₄ -alkyl radical, or an aromatic radical which is preferably derived from benzene or benzene derivatives , is substituted. Preferred terpolymers contain from 40% by weight to 60% by weight, in particular from 45 to 55% by weight, of (meth) acrylic acid and / or (meth) acrylate, particularly preferably acrylic acid and / or acrylate, 10% by weight to 30 wt .-%, preferably 15 wt .-% to 25 wt .-% methallylsulfonic acid and / or Methallylsulfonat and as the third monomer 15 wt .-% to 40 wt .-%, preferably 20 wt .-% to 40 wt. % of a carbohydrate. This carbohydrate may be, for example, a mono-, di-, oligo- or polysaccharide, mono-, di- or oligosaccharides being preferred, sucrose being particularly preferred. The use of the third monomer presumably incorporates predetermined breaking points in the polymer which are responsible for the good biodegradability of the polymer. These terpolymers generally have a molecular weight between 1000 g / mol and 200000 g / mol, preferably between 2000 g / mol and 50,000 g / mol and in particular between 3000 g / mol and 10,000 g / mol. They can be used, in particular for the preparation of liquid agents, in the form of aqueous solutions, preferably in the form of 30 to 50 percent by weight aqueous solutions. All the polycarboxylic acids mentioned are generally used in the form of their water-soluble salts, in particular their alkali metal salts.

Such organic builder substances are preferably present in amounts of up to 40% by weight, in particular up to 25% by weight and particularly preferably from 1% by weight to 5% by weight. Quantities close to the stated upper limit are preferably used in pasty or liquid, in particular hydrous, agents.

Crystalline or amorphous alkali metal aluminosilicates, in amounts of up to 50% by weight, preferably not more than 40% by weight, and in liquid agents, in particular from 1% by weight to 5% by weight, are particularly suitable as water-insoluble, water-dispersible inorganic builder materials. used. Among these are the detergent-quality crystalline aluminosilicates, in particular zeolite NaA and optionally NaX. Amounts near the above upper limit are preferably used in solid, particulate agents. In particular, suitable aluminosilicates have no particles with a particle size greater than 30 .mu.m and preferably consist of at least 80% by weight of particles having a size of less than 10 .mu.m. Their calcium binding capacity, according to the information of the German Patent DE 24 12 837 can be determined ranges from 100 to 200 mg CaO per gram. Suitable substitutes or partial substitutes for the said aluminosilicate are crystalline alkali metal silicates which may be present alone or in a mixture with amorphous silicates. The alkali metal silicates useful as builders in the compositions preferably have a molar ratio of alkali metal oxide to SiO ₂ below 0.95, in particular from 1: 1.1 to 1:12, and may be present in amorphous or crystalline form. Preferred alkali metal silicates are the sodium silicates, in particular the amorphous sodium silicates, with a molar ratio of Na ₂ O: SiO ₂ of 1: 2 to 1: 2.8. Amorphous alkali metal silicates are available, for example under the name Portil ^® commercially. Sol che with a molar ratio Na ₂ O: SiO ₂ of 1: 1.9 to 1: 2.8 are preferably added as a solid and not in the form of a solution in the production. The crystalline silicates which may be present alone or in admixture with amorphous silicates, are crystalline layer silicates with the general formula Na ₂ Si _x O _{2x + 1} · are used yH ₂ O, in which x, the so-called module, a number from 1.9 to 4 and y is a number from 0 to 20 and preferred values for x are 2, 3 or 4. Preferred crystalline phyllosilicates are those in which x in the abovementioned general formula assumes the values 2 or 3. In particular, both β- and δ-sodium disilicates (Na ₂ Si ₂ O ₅ .yH ₂ O) are preferred. Also prepared from amorphous alkali silicates, practically anhydrous crystalline alkali metal silicates of the above general formula in which x is an integer from 1.9 to 2.1, can be used in the compositions described herein. In a further preferred embodiment of the composition according to the invention, a crystalline sodium layer silicate with a modulus of 2 to 3 is used, as can be prepared from sand and soda. Crystalline sodium silicates with a modulus in the range 1.9 to 3.5 are used in a further preferred embodiment of detergents. Their content of alkali metal silicates is preferably 1 wt .-% to 50 wt .-% and in particular 5 wt .-% to 35 wt .-%, based on anhydrous active substance. If alkali metal aluminosilicate, in particular zeolite, is present as an additional builder substance, the content of alkali silicate is preferably 1% by weight to 15% by weight and in particular 2% by weight to 8% by weight, based on anhydrous active substance. The weight ratio of aluminosilicate to silicate, in each case based on anhydrous active substances, is then preferably 4: 1 to 10: 1. In agents containing both amorphous and crystalline alkali metal silicates, the weight ratio of amorphous alkali metal silicate to crystalline alkali metal silicate is preferably 1: 2 to 2: 1 and especially 1: 1 to 2: 1.

In addition to the said inorganic builder, other water-soluble or water-insoluble inorganic substances may be contained in the compositions together with it or used in the process according to the invention. Suitable in this context are the alkali metal carbonates, alkali metal bicarbonates and alkali metal sulfates and mixtures thereof. Such additional inorganic material may be present in amounts up to 70% by weight.

In addition, the agents may contain other ingredients commonly used in laundry, laundry aftertreatment, laundry care or cleaning products. These optional ingredients include in particular enzymes, enzyme stabilizers, complexing agents for heavy metals, builders, bleaches, builders, electrolytes, non-aqueous solvents, pH adjusters, odor absorbers, deodorizing substances, perfume, perfume carriers, fluorescers, dyes, hydrotropes, foam inhibitors, silicone oils, antiredeposition agents, Graying inhibitors, anti-shrinkage agents, anti-wrinkling agents, color transfer inhibitors, antimicrobial agents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing auxiliaries, repellents and impregnating agents, swelling and anti-slip agents, plasticizing components and UV absorbers.

Solvents that can be used in particular for liquid agents are, in addition to water, preferably those nonaqueous solvents which are water-miscible. These include the lower alcohols, for example, ethanol, propanol, isopropanol, and the isomeric butanols, glycerol, lower glycols, such as ethylene and propylene glycol, and the derivable from said classes of compounds ether.

Optionally present enzymes are preferably selected from the group comprising protease, amylase, lipase, cellulase, hemicellulase, oxidase, peroxidase, pectinase and mixtures thereof. First and foremost, proteases derived from microorganisms, such as bacteria or fungi, come into question. It can be obtained in a known manner by fermentation processes from suitable microorganisms. Proteases are commercially available, for example, under the names BLAP ^®, Savinase ^®, Esperase ^®, Maxatase ^®, Optimase.RTM ^®, Alcalase ^{®, ®} or Durazym Maxapem ^®. The usable lipase can For example, be obtained from Humicola lanuginosa, from Bacillus species, from Pseudomonas species, from Fusarium species, from Rhizopus species or from Aspergillus species. Suitable lipases are for example available under the names Lipolase ^®, Lipozym ^®, Lipomax® ^®, Lipex ^{®, ®} Amano lipase, Toyo Jozo ^® lipase, Meito ^® lipase and Diosynth lipase ^® commercially. Suitable amylases are commercially available for example under the name Maxamyl ^®, Termamyl ^®, Duramyl ^® and Purafect ^® OxAm. The usable cellulase may be a recoverable from bacteria or fungi enzyme, which has a pH optimum, preferably in the weakly acidic to slightly alkaline range of 6 to 9.5. Such cellulases are commercially available under the name Celluzyme ^{®, ®} and Carezyme Ecostone® ^®. Suitable pectinases for example, under the name Gamanase ^®, Pektinex AR ^®, X-Pect ^® or Pectaway ^® from Novozymes, UF under the name Rohapect ^®, Rohapect TPL ^®, Rohapect PTE100 ^®, Rohapect MPE ^®, Rohapect MA plus HC, Rohapect DA12L ^®, Rohapect 10L ^®, Rohapect B1L ^® AB Enzymes and under the name Pyrolase® ^® from Diversa Corp., San Diego, CA, USA.

To the optionally present in particular liquid agents usual enzyme stabilizers include amino alcohols, for example mono-, di-, triethanol- and -propanolamine and mixtures thereof, lower carboxylic acids, boric acid, alkali metal borates, boric acid-carboxylic acid combinations, boric acid esters, boronic acid derivatives, calcium salts, for example Ca-formic acid combination, magnesium salts, and / or sulfur-containing reducing agents.

Suitable foam inhibitors include long-chain soaps, especially behenic soap, fatty acid amides, paraffins, waxes, microcrystalline waxes, organopolysiloxanes and mixtures thereof, which moreover can contain microfine, optionally silanated or otherwise hydrophobicized silica. For use in particulate agents, such foam inhibitors are preferably bound to granular, water-soluble carrier substances.

The known polyester-active soil release polymers include copolyesters of dicarboxylic acids, for example adipic acid, phthalic acid or terephthalic acid, diols, for example ethylene glycol or propylene glycol, and polydiols, for example polyethylene glycol or polypropylene glycol. Preferred soil release polymers include those compounds which are formally accessible by esterification of two monomeric moieties, wherein the first monomer is a dicarboxylic acid HOOC-Ph-COOH and the second monomer is a diol HO- (CHR ¹¹ -) _a OH, also known as polymeric Diol H- (O- (CHR ¹¹ -) _a ) _b OH may be present. Therein, Ph is an o-, m- or p-phenylene radical which can carry 1 to 4 substituents selected from alkyl radicals having 1 to 22 C atoms, sulfonic acid groups, carboxyl groups and mixtures thereof, R ¹¹ denotes hydrogen, an alkyl radical having 1 to 22 C atoms and mixtures thereof, a is a number from 2 to 6 and b is a number from 1 to 300. Preferably, in the polyesters obtainable from these, both monomer diol units -O- (CHR ¹¹ -) _a O- and also polymeric diol units - ( O- (CHR ¹¹ -) _a ) _b O-. The molar ratio of monomer diol units to polymer diol units is preferably 100: 1 to 1: 100, in particular 10: 1 to 1:10. In the polymer diol units, the degree of polymerization b is preferably in the range of 4 to 200, particularly 12 to 140. The molecular weight or the average molecular weight or the maximum of the molecular weight distribution of preferred soil release polyester is in the range of 250 g / mol to 100,000 g / mol, in particular from 500 g / mol to 50,000 g / mol. The acid underlying the radical Ph is preferably selected from terephthalic acid, isophthalic acid, phthalic acid, trimellitic acid, mellitic acid, the isomers of sulfophthalic acid, sulfoisophthalic acid and sulfoterephthalic acid and mixtures thereof. If their acid groups are not part of the ester bonds in the polymer, they are preferably in salt form, in particular as alkali or ammonium salt. Among these, the sodium and potassium salts are particularly preferable. If desired, in place of the monomer HOOC-Ph-COOH small proportions, in particular not more than 10 mol% based on the proportion of Ph having the meaning given above, of other acids having at least two carboxyl groups may be included in the soil release-capable polyester. These include, for example, alkylene and alkenylene dicarboxylic acids such as malonic acid, succinic acid, fumaric acid, maleic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid and sebacic acid. The preferred diols HO- (CHR ¹¹ -) _a OH include those in which R ^{11 is} hydrogen and a is a number from 2 to 6, and those in which a is 2 and R ¹¹ is hydrogen and the alkyl radicals 1 to 10, in particular 1 to 3 C-atoms is selected. Among the latter diols, those of the formula HO-CH ₂ -CHR ¹¹ -OH in which R ^{11 has} the abovementioned meaning are particularly preferred. Examples of diol components are ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 1,2-decanediol, 1, 2-dodecanediol and neopentyl glycol. Particularly preferred among the polymeric diols is polyethylene glycol having an average molecular weight in the range from 1000 g / mol to 6000 g / mol. If desired, the polyesters may also be end-capped, alkyl groups having from 1 to 22 carbon atoms and esters of monocarboxylic acids being suitable as end groups. The ester groups bonded via end groups can be based on alkyl, alkenyl and aryl monocarboxylic acids having 5 to 32 carbon atoms, in particular 5 to 18 carbon atoms. To this include valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, undecenoic acid, lauric acid, lauroleic acid, tridecanoic acid, myristic acid, myristoleic acid, pentadecanoic acid, palmitic acid, stearic acid, petroselinic acid, petroselaidic acid, oleic acid, linoleic acid, linolaidic acid, linolenic acid, elaeostearic acid, arachic acid, gadoleic acid , Arachidonic acid, behenic acid, erucic acid, brassidic acid, clupanodonic acid, lignoceric acid, cerotic acid, melissic acid, benzoic acid, which can carry 1 to 5 substituents with a total of up to 25 carbon atoms, in particular 1 to 12 carbon atoms, for example tert-butylbenzoic acid. The end groups may also be based on hydroxymonocarboxylic acids having from 5 to 22 carbon atoms, including, for example, hydroxyvaleric acid, hydroxycaproic acid, ricinoleic acid, the hydrogenation product of which include hydroxystearic acid and also o-, m- and p-hydroxybenzoic acid. The hydroxymonocarboxylic acids may in turn be linked to one another via their hydroxyl group and their carboxyl group and thus be present several times in an end group. Preferably, the number of hydroxymonocarboxylic acid units per end group, that is to say their degree of oligomerization, is in the range from 1 to 50, in particular from 1 to 10. In a preferred embodiment of the invention, polymers of ethylene terephthalate and polyethylene oxide terephthalate in which the polyethylene glycol units have molar weights of 750 g / mol to 5000 g / mol and the molar ratio of ethylene terephthalate to polyethylene oxide terephthalate is 50:50 to 90:10, used in combination with an essential ingredient of the invention. The soil release polymers are preferably water-soluble, the term "water-soluble" being understood to mean a solubility of at least 0.01 g, preferably at least 0.1 g, of the polymer per liter of water at room temperature and pH 8. However, preferred polymers have a solubility of at least 1 g per liter, in particular at least 10 g per liter, under these conditions.

In one embodiment of the invention, in particular the laundry care products used as aftertreatment agents may contain additional plasticizer components, preferably cationic surfactants. Examples of fabric softening components are quaternary ammonium compounds, cationic polymers and emulsifiers, such as those used in hair care products and also in textile saliva.

wobei in (II) R und R¹ für einen acyclischen Alkylrest mit 12 bis 24 Kohlenstoffatomen, R² für einen gesättigten C₁-C₄ Alkyl- oder Hydroxyalkylrest steht, R³ entweder gleich R, R¹ oder R² ist oder für einen aromatischen Rest steht. X^– steht entweder für ein Halogenid-, Methosulfat-, Methophosphat- oder Phosphation sowie Mischungen aus diesen. Beispiele für kationische Verbindungen der Formel (II) sind Didecyldimethylammoniumchlorid, Ditalgdimethylammoniumchlorid oder Dihexadecylammoniumchlorid. Suitable examples are quaternary ammonium compounds of the formulas (II) and (III),

wherein in (II) R and R ^{1 is} an acyclic alkyl radical having 12 to 24 carbon atoms, R ^{2 is} a saturated C ₁ -C ₄ alkyl or hydroxyalkyl radical, R ^{3 is} either R, R ¹ or R ² or is a aromatic residue stands. X ^- is either a halide, methosulfate, methophosphate or phosphate ion and mixtures thereof. Examples of cationic compounds of the formula (II) are didecyldimethylammonium chloride, ditallowdimethylammonium chloride or dihexadecylammonium chloride.

Compounds of formula (III) are so-called ester quats. Esterquats are characterized by their good biodegradability and are preferred in the context of the present invention. Here, R ^{4 is} an aliphatic alkyl radical having 12 to 22 carbon atoms with 0, 1, 2 or 3 double bonds; R ⁵ is H, OH or O (CO) R ⁷ , R ⁶ is independently of R ^{5 is} H, OH or O (CO) R ⁸ , wherein R ⁷ and R ⁸ are each independently an aliphatic alkyl radical having 12 to 22 carbon atoms with 0, 1, 2 or 3 double bonds. m, n and p can each independently be 1, 2 or 3. X ^- may be either a halide, methosulfate, methophosphate or phosphate ion, as well as mixtures of these. Preference is given to compounds which contain the group O (CO) R ⁷ for R ⁵ and to alkyl radicals having 16 to 18 carbon atoms for R ⁴ and R ⁷ . Particularly preferred are compounds in which R ^{6 is} also OH. Examples of compounds of the formula (III) are methyl N- (2-hydroxyethyl) -N, N-di (tallow acyloxyethyl) ammonium methosulfate, bis (palmitoyl) ethyl hydroxyethyl, methyl ammonium methosulfate or methyl N , N-bis (acyloxyethyl) -N- (2-hydroxyethyl) ammonium methosulfate.

In a preferred embodiment, the agents contain the additional plasticizer components in amounts of up to 35% by weight, preferably from 0.1 to 25% by weight, more preferably from 0.5 to 15% by weight and especially from 1 to 10 Wt .-%, each based on the total agent.

In addition to the aforementioned components, the agents may contain pearlescing agents. Pearlescing agents give the textiles an extra shine and are therefore preferably used in mild detergents used. Examples of suitable pearlescing agents are: alkylene glycol esters; fatty acid; partial glycerides; Esters of polybasic, optionally hydroxy-substituted carboxylic acids with fatty alcohols having 6 to 22 carbon atoms; Fatty substances, such as, for example, fatty alcohols, fatty ketones, fatty aldehydes, fatty ethers and fatty carbonates, which in total have at least 24 carbon atoms; Ring opening products of Olefinepoxiden having 12 to 22 Koh lenstoffatomen with fatty alcohols having 12 to 22 carbon atoms, fatty acids and / or polyols having 2 to 15 carbon atoms and 2 to 10 hydroxyl groups and mixtures thereof.

Furthermore, liquid agents may additionally contain thickeners. To increase consumer acceptance, the use of thickening agents has proven particularly useful in gel-type liquid detergents. Naturally derived polymers that can be used as thickening agents are, for example, agar-agar, carrageenan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour, locust bean gum, starch, dextrins, gelatin and casein, cellulose derivatives such as carboxymethyl cellulose hydroxyethyl and -propylcellulose, and polymeric polysaccharide thickeners such as xanthan gum; In addition, fully synthetic polymers such as polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, polyamides and polyurethanes come into question. In a preferred embodiment, the textile care agents according to the invention comprise thickeners, preferably in amounts of up to 10% by weight, more preferably up to 5% by weight, in particular from 0.1 to 1% by weight, in each case based on the total composition ,

Furthermore, the agents may additionally contain odor absorbers and / or color transfer inhibitors. In a preferred embodiment, the agents optionally contain from 0.1% to 2%, preferably from 0.2% to 1%, by weight of color transfer inhibitor which in a preferred embodiment of the invention comprises a vinylpyrrolidone polymer, Vinylimidazole, vinylpyridine N-oxide or a copolymer of these. Useful are, for example, polyvinylpyrrolidones having molecular weights of from 15,000 to 50,000 and also polyvinylpyrrolidones having molecular weights of more than 1,000,000, in particular from 1,500,000 to 4,000,000, N-vinylimidazole / N-vinylpyrrolidone copolymers, polyvinyl oxazolidones, copolymers based on vinyl monomers and carboxylic acid amides, polyesters containing polyesters containing pyrrolidone groups, grafted polyamidoamines, polyamine N-oxide polymers, polyvinyl alcohols and copolymers based on acrylamidoalkenylsulfonic acids. However, it is also possible to use enzymatic systems comprising a peroxidase and hydrogen peroxide or a substance which produces hydrogen peroxide in water. The addition of a mediator compound for the peroxidase, for example an acetosyringone, a phenol derivative or a phenotiazine or phenoxazine, is preferred in this case, wherein also above-mentioned polymeric Farbübertragungsinhibitorwirkstoffe can be used. For use in agents according to the invention, polyvinylpyrrolidone preferably has an average molecular weight in the range from 10,000 to 60,000, in particular in the range from 25,000 to 50,000. Among the copolymers, preference is given to those of vinylpyrrolidone and vinylimidazole in a molar ratio of 5: 1 to 1: 1 with an average molecular weight in the range from 5000 to 50,000, in particular 10,000 to 20,000.

Preferred deodorizing substances are metal salts of an unbranched or branched, unsaturated or saturated, mono- or polyhydroxylated fatty acid having at least 16 carbon atoms and / or a rosin acid with the exception of the alkali metal salts and any desired mixtures thereof. A particularly preferred unbranched or branched, unsaturated or saturated, mono- or polyhydroxylated fatty acid having at least 16 carbon atoms is ricinoleic acid. A particularly preferred rosin acid is abietic acid. Preferred metals are the transition metals and the lanthanides, in particular the transition metals of Groups VIII-a, Ib and IIb of the Periodic Table and lanthanum, cerium and neodymium, more preferably cobalt, nickel, copper and zinc, most preferably zinc. The cobalt, nickel and copper salts and the zinc salts are similarly effective, but for toxicological reasons, the zinc salts are to be preferred. It is advantageous and therefore particularly preferred to use as deodorizing substances one or more metal salts of ricinoleic acid and / or abietic acid, preferably zinc ricinoleate and / or zinc abietate, in particular zinc ricinoleate. Cyclodextrins, as well as mixtures of the abovementioned metal salts with cyclodextrin, preferably in a weight ratio of from 1:10 to 10: 1, particularly preferably from 1: 5 to 5: 1 and in particular from 1, also turn out to be further suitable deodorizing substances within the meaning of the invention. 3 to 3: 1. The term "cyclodextrin" includes all known cyclodextrins, i. both unsubstituted cyclodextrins with 6 to 12 glucose units, in particular alpha-, beta- and gamma-cyclodextrins and also their mixtures and / or their derivatives and / or mixtures thereof.

Liquid or pasty compositions in the form of common solvents, in particular water, containing solutions are usually prepared by simply mixing the ingredients, which can be added in bulk or as a solution in an automatic mixer.

In a particularly preferred embodiment, the agents are present, preferably in liquid form, as a portion in a completely or partially water-soluble coating. Portioning makes it easier for the consumer to dose.

The funds can be packed, for example, in foil bags. Pouches made of water-soluble film make it unnecessary for the consumer to tear open the packaging. In this way, a convenient dosing of a single, sized for a wash portion by inserting the bag directly into the washing machine or by throwing the bag into a certain amount of water, for example in a bucket, a bowl or hand basin, possible. The film bag surrounding the washing portion dissolves without residue when it reaches a certain temperature.

There are numerous processes in the prior art for producing water-soluble detergent portions, which are basically also useful in the context of the present invention. The best known methods are the tubular film processes with horizontal and vertical sealing seams. Also suitable for the production of film bags or dimensionally stable detergent portions is the thermoforming process (thermoforming process). However, the water-soluble envelopes do not necessarily consist of a film material, but can also represent dimensionally stable containers that can be obtained for example by means of an injection molding process.

Furthermore, methods for producing water-soluble capsules of polyvinyl alcohol or gelatin are known, which in principle offer the possibility to provide capsules with a high degree of filling. The methods are based on introducing the water-soluble polymer into a shaping cavity. The filling and sealing of the capsules takes place either synchronously or in successive steps, in which case the filling of the capsules takes place through a small opening in the latter case. The filling of the capsules is carried out, for example, by a Befüllkeil, which is above two rotating against each other drums, which have spherical half shells on its surface. The drums carry polymer bands that cover the ball half-shell cavities. At the positions where the polymer band of one drum coincides with the polymer tape of the opposite drum, a seal takes place. In parallel, the filling material is injected into the forming capsule, wherein the injection pressure of the filling liquid presses the polymer bands in the Kugelhalbschalenkavitäten. A process for the preparation of water-soluble capsules, in which initially the filling and then the sealing takes place, is based on the so-called Bottle-Pack ^® method. In this case, a tubular preform is guided into a two-part cavity. The cavity is closed, the lower tube portion is sealed, then the tube is inflated to form the capsule shape in the cavity, filled and finally sealed.

The shell material used for the preparation of the water-soluble portion is preferably a water-soluble polymeric thermoplastic, more preferably selected from the group (optionally partially acetalized) polyvinyl alcohol, polyvinyl alcohol copolymers, polyvinylpyrrolidone, polyethylene oxide, gelatin, cellulose and derivatives thereof, starch and derivatives thereof, blends and composites, inorganic salts and mixtures of said materials, preferably hydroxypropylmethylcellulose and / or polyvinyl alcohol blends. Polyvinyl alcohols are commercially available, for example under the trade name Mowiol ^® (Clariant). In the present invention, particularly suitable polyvinyl alcohols are, for example, Mowiol ^® 3-83, Mowiol ^® 4-88, Mowiol ^® 5-88, Mowiol ^® 8-88 and Clariant L648. The water-soluble thermoplastic used to prepare the portion may additionally optionally comprise polymers selected from the group comprising acrylic acid-containing polymers, polyacrylamides, oxazoline polymers, polystyrene sulfonates, polyurethanes, polyesters, polyethers and / or mixtures of the above polymers. It is preferred if the water-soluble thermoplastic used comprises a polyvinyl alcohol whose degree of hydrolysis makes up 70 to 100 mol%, preferably 80 to 90 mol%, particularly preferably 81 to 89 mol% and in particular 82 to 88 mol%. It is further preferred that the water-soluble thermoplastic used comprises a polyvinyl alcohol whose molecular weight is in the range from 10,000 to 100,000 gmol ^-1 , preferably from 11,000 to 90,000 gmol ^-1 , more preferably from 12,000 to 80,000 gmol ^-1 and especially from 13,000 to 70,000 gmol ^-1 lies. It is further preferred if the thermoplastics are used in amounts of at least 50% by weight, preferably of at least 70% by weight, more preferably of at least 80% by weight and in particular of at least 90% by weight, based in each case on the weight the water-soluble polymeric thermoplastic.

Examples

Cotton textile samples (Equest Jersey, turquoise, 20 cm × 20 cm) were incubated for 30 min at 30 ° C. with an aqueous wash liquor containing 4.11 g / l of a detergent free of inventive copolymer Washed V1, or containing the same amount of the same detergent and (0.25 g / l or 2.5 g / l, based on active substance content) Noverite ^® 302 or Noverite ^® 304, then rinsed 4 times for 30 seconds each with water , in a sling (internal diameter 24 cm) at 1400 rpm for 1 minute or 10 minutes and spun in a convection oven at 100 ° C to constant weight (usually for about one hour). The weight of the textile samples was determined before washing, after spinning and after drying. The difference between the textile weights after spinning and after drying corresponds to the weight of the amount of water that still adhered to the textile after spinning. In order not to falsify the result by the weight loss by, for example, abrasion during washing, the weight of the dry textile after the washing process, not the textile weight before the washing process, was used to calculate the remaining moisture remaining before drying. Table 1 below shows the differences between the residual moisture of the textile treated in the presence of the paraffin and the residual moisture of the textile treated only with the detergent as averages of triplicate determinations. Table 1: Residual moisture differences [wt .-%] fleet composition spin duration difference V1 + 0.25 g / l Noverite ^® 302 1 minute -1.64 V1 + 0.25 g / l Noverite ^® 304 1 minute -1.46 V1 + 2.5 g / l Noverite ^® 302 1 minute -1.61 V1 + 0.25 g / l Noverite ^® 302 10 mins -2.23 V1 + 0.25 g / l Noverite ^® 304 10 mins -2.21 V1 + 2.5 g / l Noverite ^® 304 10 mins -1.15

It can be seen that the use of copolymer essential to the invention in the main wash cycle leads to lower moisture contents of washed and thrown laundry.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2013/033508 A1 [0004]
• DE 2412837 [0031]

Claims (10)

 Use of copolymers which are obtainable from at least one cationic ethylenically unsaturated monomer and at least one nonionic ethylenically unsaturated monomer, in particular by mechanical washing processes using an aqueous wash-containing liquor to shorten the drying time of textiles washed and in particular subsequently thrown. Use according to Claim 1, characterized in that the copolymer is used in the main wash cycle of the automatic washing process as a constituent of the aqueous detergent-containing liquor. Use according to Claim 2, characterized in that the copolymer is used as constituent of a washing agent which contains 2% by weight to 60% by weight, in particular 6% by weight to 30% by weight, of the copolymer.  A process for shortening the drying time, in particular mechanically laundered textiles, comprising washing soiled textiles in an aqueous wash liquor containing laundry detergent, single or multiple rinsing of the textiles with water and / or an aqueous aftertreatment liquor containing laundry aftertreatment agent to remove the detergent liquor from Textile, wherein a copolymer which is obtainable from at least one cationic ethylenically unsaturated monomer and at least one nonionic ethylenically unsaturated monomer is part of the wash liquor and / or the aftertreatment liquor, optionally spin-drying the laundry and then drying it. A method according to claim 4, characterized in that the total centrifugation time under the action of a centrifugal force in the range of 4 kN / kg · m to 6 kN / kg · m 1 minute to 20 minutes, in particular 8 minutes to 12 minutes. Use according to one of claims 1 to 4 or method according to one of claims 4 or 5, characterized in that the concentration of the copolymer in the aqueous liquor 0.1 g / l to 5 g / l, in particular 0.25 g / l to 2.5 g / l. Use or method according to one of the preceding claims, characterized in that the textile during the wash cycle over a period of 10 minutes to 180 minutes, in particular 20 minutes to 90 minutes, and / or during the After rinsing over a period of 1 minute to 30 Minutes, in particular 5 minutes to 20 minutes with the copolymer-containing liquor remains in contact. Use or process according to one of the preceding claims, characterized in that in the copolymer, the cationic monomers and nonionic monomers in molar ratios in the range from 80: 1 to 1:80, in particular from 10: 1 to 1:10 and particularly preferably from 50:50 and / or that the copolymer has an average molecular weight in the range from 1 × 10 ⁴ g / mol to 1 × 10 ⁹ g / mol, in particular from 1 × 10 ⁵ g / mol to 1 × 10 ⁷ g / mol. Use or method according to one of the preceding claims, characterized in that in the copolymer, the nonionic monomers from the acrylic acid and methacrylic acid esters and amides and mixtures of at least two such monomers, in particular from methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl and iso-propyl acrylate and methacrylate, methyl and ethyl oligooxyethyl acrylates and methacrylates in which the degree of oligomerization of the oxyethyl groups is 1 to 5, acrylamide, methacrylamide, N-monoalkylacrylamides and methacrylamides such as N-methylacrylamide, N-methylmethacrylamide, N Methylolacrylamide, N-methylolmethacrylamide, N-hydroxyethylacrylamide, N-hydroxyethylmethacrylamide, N-hydroxypropylacrylamide, N-hydroxypropylmethacrylamide and dialkylacrylamides and -methacrylamides such as N, N-dimethylacrylamide, N, N-dimethylmethacrylamide, N, N-diethylacrylamide, N, N- Diethylmethacrylamid, and mixtures thereof are selected. Use or process according to any one of the preceding claims, characterized in that in the copolymer, the cationic monomers of those carrying at least one acrylic, vinyl, allyl and / or maleyl group and at least one quaternary ammonium group, and mixtures of at least two such monomers, in particular of trimethylammoniumethylacrylate, trimethylammoniumethylmethacrylate, trimethylammoniumpropylacrylate, trimethylammoniumpropylmethacrylate, trimethylammoniumethylacrylamide, trimethylammoniumethylmethacrylamide, trimethylammoniumpropylacrylamide, Trimethylammoniumpropylmethacrylamid, which are present with conventional counter anions such as chloride, dimethyldiallylammonium chloride, and mixtures thereof, are selected.