EP3450532B1 - Use of an amodimethicone/organosilicon-containing copolymer, detergent, use of the detergent and washing method - Google Patents

Description

The present invention relates to the use of an amodimethicone/organosilicon copolymer to improve various properties of a textile. The invention also relates to a detergent for textiles which improves the softness, drapability and/or tear strength of textiles treated with this detergent and/or avoids or removes pills and/or graying of these textiles while at the same time providing excellent cleaning performance. In addition, the present invention also relates to a washing method for obtaining the above effects.

Washing textiles with detergent and then drying them can harden the fibers and the textiles lose their soft feel. Likewise, the drapability of the textiles often decreases after washing, and it can also be observed that textiles tear more easily at existing cuts such as pocket corners, slits or buttonholes after frequent washing. Furthermore, repeated washing processes can lead to graying of the textiles and, over time, more and more pills appear on their surface.

From the pamphlet DE 10 044 472 A1 detergents are known which contain amodimethicone. The amodimethicone ensures a particularly soft feel.

The pamphlet U.S. 6,815,412 B1 discloses a method of using a softener composition for textile fiber materials. The compositions comprise a plasticizer, a material selected from the group consisting of polyethylene, a fatty acid alkanolamide, a polysilicic acid, and a polyurethane, and a polyorganosiloxane.

the DE 10 2015 225 975 A1 discloses a combination product for conditioning textile fabrics, the combination product comprising at least two flowable compositions A and B that are spatially separate from one another and can be dosed separately, where (i) composition A is a flowable fabric softener formulation which, based on the total weight of the fabric softener formulation, contains ≥ 4.0 wt % of at least one esterquat and a fragrance, (ii) composition B is a free-flowing fragrance formulation which, based on the total weight of the fragrance formulation, contains ≥ 1.0% by weight of at least one fragrance and 0.0 to 0.4% by weight -% contains at least one esterquat.

the DE10 2014 206828 A1 discloses the use of amino-containing polymers with certain oxidizing agents to minimize wrinkling and to facilitate ironing of fabrics made of cellulosic material.

the WO 99/41346 A1 relates to antifouling detergent compositions, in particular for laundry, based on at least one anionic antifouling copolyester and at least one aminosilicone.

the DE 10 213 226005 A1 discloses the use of certain soil-removing polymeric active ingredients to enhance the cleaning performance of detergents when washing textiles, detergents which contain such soil-releasing active ingredients, and the use of such soil-releasing active ingredients to form a protective layer on textile fabrics.

the U.S. 2004/092425 A1 discloses a method of treating fabrics in fabric treatment applications, including home laundering, to thereby provide improved cleaning and fabric care. The invention further relates to methods of making such liquid detergent compositions

The pamphlet WO 2015/091108 A1 describes the use of from 0.01 to 10% by weight of alkyl carboxylic acid esters in order to increase the softness of washed textiles and reduce their graying.

The use of 0.001 to 30% by weight of isoparaffins in detergents to reduce the tendency to crease is described in the publication WO 2017/063960 A1 described. The presence of the isoparaffins in the detergent also results in increased softness of fabrics washed with the detergent.

Proceeding from this prior art, it is an object of the present invention to specify uses of an amodimethicone/organosilicon copolymer and to provide a detergent which, with very good cleaning performance, is characterized by high softness, good drapability and/or high tear strength of the treated textiles, or enables the avoidance of pills and/or improves the removal of pills and at the same time reduces or even prevents graying of the treated textiles, ie is also distinguished by graying inhibition and/or gray removal of the treated textiles. In addition, it is an object of the present invention to provide a washing method by which the above-described effects can be obtained.

It has surprisingly been found that this object is achieved by using an amodimethicone/organosilicon copolymer.

In the context of the present invention, an amodimethicone/organosilicon copolymer is a copolymer of amodimethicone and an organic silicon compound. Organic silicon compounds, or in other words organosilicon compounds, are compounds with one or more Si—C and/or Si—O compounds. Among the particularly suitable according to the invention organic silicon compounds is to count silsesquioxane. Further organic silicon compounds which are very suitable according to the invention are, in particular, linear and/or cyclic silicones, ie preferably linear or cyclic polydimethylsiloxanes.

Amodimethicone is an amino-functional silicone, i.e. a siloxane polymer functionalized with amine groups. Amodimethicone is the INCI (International Nomenclature of Cosmetic Ingredients) of this compound. Siloxane polymers, ie polysiloxanes for short, are polymers with a main chain consisting of alternating silicon atoms and oxygen atoms and having organic substituents on the silicon atoms. If the polysiloxanes contain amine groups, the term aminosiloxanes is used, with amodimethicone also having methyl groups on the silicon atoms in addition to one or more amine groups. The amine groups can either be terminal on the main chain of the polysiloxane or they can be part of the organic side chain. Particularly preferred amodimethicones are polydimethylsiloxanes having an aminoethylaminopropyl side chain.

The amodimethicone/organosilicon copolymer used according to the invention combines the properties of both copolymer partners. It was found here that the amodimethicone is absorbed very well by textiles and forms cross-links to the textile surface, so that the amodimethicone/organosilicon copolymer adheres very well to textiles. The organic silicon compound supports this property by spreading like a film on the textile surface and thus promoting homogeneous anchoring of the amodimethicone over the textile. There are therefore no local accumulations of amodimethicone in or on the textile. This improves the properties of amodimethicone that have a positive effect on the textile.

This describes the use of the amodimethicone/organosilicon copolymer to improve the after-wash softness of fabrics.

The softness of a piece of textile can be determined using the so-called "extraction method", also known as the "fabric pull-through method". With this method, all relevant information on textile products in relation to their grip (including tensile, shear, bending and frictional forces) is recorded. In the extraction method, which is carried out using a ^{PhabrOmeter®} (Nu Cybertek, Inc., CA, USA), a fabric sample is pulled through a precisely defined nozzle and the resistance of the fabric when pulled through is recorded in a force-displacement curve. The softer the fabric, the easier it is to pull through, and the effort (energy) required is therefore lower. To determine the softness, the area under the force-displacement curve obtained is calculated. The lower this value, the greater the softness of the textile.

Furthermore, according to the present invention, the use of the amodimethicone/organosilicon copolymer to improve the drapability of textiles after washing is described.

The drapability of a textile describes its ability to adapt to spatial structures. Drapability can also be determined using the fabric pull-through method performed using the ^{PhabrOmeter®} described above. This process simulates the formability (drapability) of a textile surface under the influence of its own weight and gravity. The parameter is determined from the data of the force-displacement curve. The lower this value, the more drapeable or softer and more flowing the drape of the respective textile.

Also according to the present invention, the use of the amodimethicone/organosilicon copolymer to improve the tear resistance of textiles after washing is described.

The tear strength of textiles is determined by determining the tear propagation force. The tear resistance of textiles is determined using the ballistic pendulum (Elmendorf) in accordance with DIN EN ISO 13937-1:2000 and is used to evaluate the tear resistance of textiles. The test simulates the practical case in which the textile fabric is subjected to a sudden load and - starting from an existing interface (e.g. pocket corners of trousers or a skirt, a slit, a buttonhole) - tears further. With the ballistic pendulum, the tearing work is measured directly and is generally preferably given as the tearing force. The higher the determined value, the higher the tear resistance of the textiles.

Also disclosed is the use of an amodimethicone/organosilicon copolymer to prevent and/or remove pills.

When using textiles, but also during washing processes and dry cleaning, the fabrics can become fluffy. This is a roughening of the surface fibers and/or a working out of the fibers from the textile fabric, which leads to a visible change in the surface. The pills that form are more or less spherical structures that are connected to the fabric by anchor fibers and whose density is such that no light penetrates and a shadow is cast. Parallel to the formation of the pills, further surface fibers can develop, but the pills can also be rubbed off. The number of pills in a textile fabric can be visually determined using the evaluation method described in DIN EN ISO 12945-2:2000.

According to the present invention, the use of an amodimethicone/organosilicon copolymer to reduce the graying of textiles is also described. The effect achieved is also described as a "rewhite boost" effect or "whitening boost" effect. The textiles appear whiter through the use of the amodimethicone/organosilicon copolymer. The brightness of the textiles after treatment can be assessed spectrometrically. For this purpose, the Y-values of the various textiles were determined eight times using a Data Color Spektrafflash 600.

An amodimethicone/organosilicon copolymer particularly preferably used according to the present invention is hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)siloxane, in other words according to INCI an amodimethicone/morpholinomethyl silsesquioxane copolymer. This is a siloxane polymer obtained by reacting an amodimethicone with either morpholinomethyltriethoxysilane or morpholinomethyltrimethoxysilane in an aqueous environment. The hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)siloxane attaches particularly well to textiles, especially cellulose-based textiles, and forms particularly uniform crosslinks with the textile. The crosslinks formed are also characterized by high stability, so that the effects according to the invention, such as the softness of textiles after washing, the drapability, the tear strength, the avoidance and/or removal of pills and/or the reduction in graying, are achieved permanently .

Furthermore, according to the invention, a detergent for textiles is also disclosed which contains at least one amodimethicone/organosilicon copolymer and cellulase. wherein the mass ratio of amodimethicone/organosilicon copolymer to cellulase is 5:1 to 1:1.

In other words, the detergent according to the invention contains a Active ingredient combination of at least one amodimethicone/organosilicon copolymer and cellulase in a mass ratio of copolymer to cellulase of 5:1 to 1:1.

In the context of the present invention, “detergent” is understood to mean any washing, cleaning and care product that is used to clean and care for textiles, such as home and clothing textiles, which in particular have a cotton content or consist of cotton. These include in particular heavy-duty detergents, special detergents such as mild detergents, wool detergents and the like, washing aids, laundry care products, laundry pre-treatment and laundry after-treatment agents.

To avoid redundancy, reference is made to the above explanations with regard to the definition of the amodimethicone/organosilicon copolymer. However, it is stated that the detergent according to the invention contains at least one amodimethicone/organosilicon copolymer. The detergent can therefore also contain combinations of amodimethicone/organosilicon copolymers.

The cellulase used according to the present invention is an enzyme capable of degrading cellulose. In this way, textiles based in particular on cellulose, such as cotton textiles or textiles containing cotton, can be smoothed, since the cellulase removes cellulose fibers protruding from woven textile material in particular by enzymatic degradation. However, bringing a cellulose-based textile into contact with cellulase over a longer period of time, for example during a washing process, can lead to the textile being damaged, since the cellulase is also capable of attacking existing cellulose fabric.

Surprisingly, however, it has been found that cellulase, which is used in combination with at least one amodimethicone/organosilicon copolymer, smoothes cellulose-based textiles in particular - as desired, and thereby gives the textile a soft feel and a smooth appearance, which means that colored textiles in particular appear with a higher color brilliance, but the textile fibers are not permanently damaged, but rather strengthened and stabilized. Without being bound to theory, it is assumed that the amodimethicone/organosilicon copolymer used according to the invention is absorbed by the textile and causes the fibers or the fabric to be strengthened by the formation of cross-links.

Using the detergent according to the invention therefore not only ensures that the textile treated with the detergent becomes clean and fresh, but also that the textile retains its original shape, i.e. the textile retains its inherent elasticity, is stable and tear-resistant and yet has a high degree of softness. In addition, the detergent according to the invention can prevent graying and increase the white appearance, so that white textiles in particular appear lighter or whiter and the color of colored textiles is brilliant. The formation of pills is also reliably suppressed or existing pills are removed.

In addition, the combination of active substances according to the invention of at least one amodimethicone/organosilicon copolymer and cellulase has no negative effect whatsoever on the washing behavior or the textiles. In particular, the water absorbency of the textiles is not reduced, so that a very good washing result is achieved.

For the above reason of improving the uniform and permanently stable formation of crosslinks on or in the textile, the amodimethicone/organosilicon copolymer is preferably a hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl) siloxane.

An advantageous development of the detergent according to the invention is characterized in that a mass fraction of amodimethicone/organosilicon copolymer, based on the total mass of the detergent, is 0.001% to 5% and in particular 0.01% to 1%. If several amodimethicone/organosilicon copolymers are used in combination, the mass fraction relates to the total mass of all amodimethicone/organosilicon copolymers contained in the detergent. Even a small proportion by mass of 0.001% and in particular 0.01% stabilizes the textile fibers while compensating for the more fibre-degrading effect of the cellulase. The textile fibers are repaired, so to speak, by the formation of cross-links with the amodimethicone/organosilicon copolymer. The lower the mass fraction of amodimethicone/organosilicon copolymer, the more cost-effectively the detergent can be produced. Below 0.001 parts by mass of amodimethicone/organosilicon copolymer, however, no significant effect can be observed in terms of stabilizing the textiles. High mass fractions of more than 1% or in particular more than 5%, on the other hand, are difficult to incorporate into the detergent, particularly when it comes to liquid detergents or detergents in gel form. With regard to a balanced spectrum of activity, a mass fraction of amodimethicone/organosilicon copolymer is preferably in a range from 0.01% to 1%.

A further advantageous mass fraction of cellulase, based on the total mass of the detergent, is 0.001% to 1% and in particular 0.005% to 0.3%. Even with a low mass fraction of cellulase of 0.001% and in particular of 0.005%, a smoothing effect on a textile washed with the detergent according to the invention is noticeable, which is greater the higher the mass fraction of cellulase in the detergent. However, very high mass fractions of more than 0.3% and in particular of more than 1% can lead to damage to the textiles which are washed with the detergent, so that a preferred mass fraction of cellulase is 0.005% to 0.3%.

It is particularly preferred here if the mass ratio of amodimethicone/organosilicon copolymer to cellulase is 2:1. The proportion of amodimethicone/organosilicon copolymer in % by mass is thus always at least as great as the proportion of cellulase in the detergent according to the invention, so that an effect of the degradation of cellulose fibers that is potentially associated with cellulase is always canceled out by the tissue-stabilizing effect of the amodimethicone/organosilicon copolymer or superimposed. Very good tissue stabilization of the textile is thereby obtained, as a result of which the drapability and stability of the textile are improved while at the same time being very soft. The specified mass ratio also improves the rewhite effect or "whitening boost" effect of the textile, which thus appears lighter or whiter, and the formation of pills is minimized or completely prevented.

To improve the detergency, the detergent according to the invention advantageously contains at least one surfactant. A surfactant in the context of the present invention is a surface-active substance which, by forming micelles, is able to remove dirt particles from the textile or textiles during a washing process with the detergent. Suitable surfactants include cationic, anionic, nonionic and amphoteric surfactants. Any mixtures of two or more surfactants can also be used, depending on the desired washing performance.

Suitable anionic surfactants include, but are not limited to, alkyl benzene sulfonates, olefin sulfonates, alkane sulfonates, fatty alcohol sulfates, fatty alcohol ether sulfates, or a mixture of two or more of these anionic surfactants. Of these anionic surfactants, alkyl benzene sulfonates, fatty alcohol ether sulfates, and mixtures thereof are particularly preferred.

Surfactants of the sulfonate type are preferably alkylbenzene sulfonates, olefin sulfonates, ie mixtures of alkene and hydroxyalkane sulfonates and disulfonates, such as those obtained, for example, from C _12-18 monoolefins with a terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acidic Hydrolysis of the sulfonation products is considered. Also suitable are C _12-18 alkanesulfonates and the esters of α-sulfofatty acids (ester sulfonates), for example the α-sulfonated methyl esters of hydrogenated coconut, palm kernel or tallow fatty acids.

Alkyl benzene sulfonates are preferably selected from linear or branched mono- and di-alkyl benzene sulfonates. The alkyl radicals, individually or together, can contain 9 to 19, preferably 9 to 15, and in particular 9 to 13 carbon atoms. A very particularly preferred representative is sodium dodecyl benzyl sulfonate.

Alk(en)yl sulfates are the salts of sulfuric acid monoesters of C12-C18 fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, _lauryl , _mirystyl , _cetyl or _stearyl alcohol or C10-C20 oxo alcohols and those monoesters secondary alcohols of these chain lengths are preferred. C ₁₂ -C ₁₆ -alkyl sulfates and C ₁₂ -C ₁₅ -alkyl sulfates and also C ₁₄ -C ₁₅ -alkyl sulfates are preferred for reasons of washing technology. 2,3-Alkyl sulfates are also suitable anionic surfactants.

Also alkyl ether sulfates having the formula

R ¹ -O-(AO) _n -SO ₃ ^- X ⁺

are suitable. In this formula, R ¹ is 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 are selected from decyl, undecyl, dodecyl, tridecyl, Tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl radicals and mixtures thereof, representatives with an even number of carbon atoms being preferred. Particularly preferred radicals R ¹ are derived from C ₁₂ -C ₁₈ fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, mirystyl, cetyl or stearyl alcohol or from C ₁₀ -C ₂₀ oxo alcohols.

AO stands for an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably for an ethylene oxide moiety. The index n is an integer from 1 to 50, preferably from 1 to 20, and in particular from 2 to 10. n is very particularly preferably the numbers 2, 3, 4, 5, 6, 7 or 8. X is for a monovalent cation or the nth part of an n-valent cation, preference being given to the alkali metal ions and including Na ⁺ or K ⁺ , with Na ⁺ being extremely preferred. Further cations X ⁺ can be selected from NH ₄ ⁺ , ½ Zn ²⁺ , ½ Mg ²⁺ , ½ Ca ²⁺ , ½ Mn ²⁺ and mixtures thereof.

The anionic surfactants can be in the form of their sodium, potassium or magnesium or ammonium salts. The anionic surfactants are preferably in the form of their sodium salts and/or ammonium salts. Amines that can be used for neutralization are preferably choline, triethylamine, monoethanolamine, diethanolamine, triethanolamine, methylethylamine or a mixture thereof, monoethanolamine being preferred.

Suitable nonionic surfactants include alkoxylated fatty alcohols, alkoxylated oxo-alcohols, alkoxylated fatty acid alkyl esters, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ethers, amine oxides, alkyl (poly)glucosides, and mixtures thereof.

R2

für einen linearen oder verzweigten, substituierten oder unsubstituierten Alkylrest,

AO

für eine Ethylenoxid-(EO) oder Propylenoxid-(PO)-Gruppierung,

m

für ganze Zahlen von 1 bis 50 stehen.

Preferred detergents contain at least one fatty alcohol alkoxylate of the formula

R ² -O-(AO) _m -H

in the

R2

for a linear or branched, substituted or unsubstituted alkyl radical,

oh

for an ethylene oxide (EO) or propylene oxide (PO) group,

m

are integers from 1 to 50.

In the above formula, R ² is a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, particularly preferably a fatty alcohol radical. Preferred radicals R ² are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl radicals and mixtures thereof, the representatives with an even number of C atoms are preferred. Particularly preferred radicals R ² are derived from C ₁₂ -C ₁₈ fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, mirystyl, cetyl or stearyl alcohol or from C ₁₀ -C ₂₀ oxo alcohols.

AO represents an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably an ethylene oxide moiety. The index m is an integer from 1 to 50, preferably from 1 to 20, and in particular from 2 to 10. m is very particularly preferably the numbers 2, 3, 4, 5, 6, 7 or 8.

According to a further advantageous development, in order to obtain a particularly good washing performance with high dirt dissolving power, it is provided that a mass fraction of surfactant, based on the total mass of the detergent, is 1% to 50% and in particular 3% to 20%. When using a combination of two or more surfactants, the mass fraction relates to the total mass of the surfactants used.

More preferably, the detergent is in powder, liquid, gel form, in the form of tabs or capsules.

The detergent can contain other customary ingredients. Unless otherwise stated, all quantitative data given in connection with the ingredients of the detergent described herein relate to mass fractions in %, based in each case on the total mass of the detergent.

Furthermore, quantities of this type, which relate to at least one ingredient, always relate to the total quantity of this type of ingredient contained in the detergent, unless explicitly stated otherwise. This means that such amounts, for example in connection with "at least one surface-active substance", relate to the total amount of surface-active substances contained in the detergent.

"At least one" as used herein refers to 1 or more, for example 1, 2, 3, 4, 5, 6, 7, 8, 9 or more. In connection with ingredients of the detergent described herein, this information does not refer to the absolute amount of molecules, but to the type of ingredient. "At least one enzyme" or "at least one surfactant" thus means, for example, one or more different enzymes or surfactants, i.e. one or more different types of enzymes or surfactants. Together with quantities, the quantities refer to the total quantity of the corresponding type of ingredient as already defined above.

In addition, the detergent according to the invention can also contain other ingredients that further improve the performance and/or aesthetic properties of the detergent. In the context of the present invention, the detergent preferably additionally contains one or more substances from the group of Bleaching agents, complexing agents, builders, electrolytes, non-aqueous solvents, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotropes, foam inhibitors, silicone oils, antiredeposition agents, graying inhibitors, shrinkage inhibitors, anti-crease agents, color transfer inhibitors, antimicrobial agents, germicides, fungicides, antioxidants, Preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, swelling and non-slip agents, softening components and UV absorbers.

Any substance that destroys or absorbs dyes through oxidation, reduction or adsorption and thereby decolorizes materials can be used as a bleaching agent. These include bleaches containing hypohalite, hydrogen peroxide, perborate, percarbonate, peroxoacetic acid, diperoxoazelaic acid, diperoxododecanedioic acid and oxidative enzyme systems.

In particular, silicates, aluminum silicates (particularly zeolites), carbonates, salts of organic di- and polycarboxylic acids and mixtures of these substances should be mentioned as builders which can be present in the detergent.

Organic builders which can be present in the detergent are, for example, the polycarboxylic acids which can be used in the form of their sodium salts, polycarboxylic acids being understood as meaning those carboxylic acids which carry more than one acid function. For example, these are citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, saccharic acids, aminocarboxylic acids and mixtures of these. Preferred salts are the salts of polycarboxylic acid, citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids and mixtures of these.

Polymeric polycarboxylates are also suitable as builders. These are, for example, the alkali metal salts of polyacrylic acid or polymethacrylic acid, e.g. those with a relative molecular mass of 600 to 750,000 g/mol.

Suitable polymers are, in particular, polyacrylates, which preferably have a molecular weight of 1000 to 15,000 g/mol. Due to their superior solubility, the short-chain polyacrylates which have molar masses from 1000 to 10,000 g/mol and particularly preferably from 1000 to 5000 g/mol can in turn be preferred from this group.

Also suitable are copolymeric polycarboxylates, in particular those of acrylic acid with methacrylic acid and acrylic acid or methacrylic acid with maleic acid. To improve water solubility, the polymers can also contain allyl sulfonic acids, such as allyloxybenzene sulfonic acid and methallyl sulfonic acid, as a monomer.

Soluble builders, for example citric acid, or acrylic polymers with a molar mass of 1000 to 5000 g/mol are preferably used in liquid detergents.

Liquid detergents also preferably contain water as the main solvent. It is preferred that the detergent contains more than 5%, preferably more than 15% and particularly preferably more than 25% by weight of water, based in each case on the total weight of detergent. Particularly preferred liquid detergents contain proportions by mass of 5 to 90%, preferably 10 to 85%, particularly preferably 25 to 75% and particularly preferably 35 to 65% water. Alternatively, the detergent according to the invention can be a low-water to water-free detergent, with the mass fraction of water being less than 10% or more in a preferred embodiment preferably less than 8%, based in each case on the total mass of the detergent.

In addition, non-aqueous solvents can be added to the detergent. Suitable non-aqueous solvents include monohydric or polyhydric alcohols, alkanolamines or glycol ethers, provided they are miscible with water in the specified concentration range. The solvents are preferably selected from ethanol, n-propanol, i-propanol, butanols, glycol, propanediol, butanediol, methylpropanediol, glycerol, diglycol, propyldiglycol, butyldiglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, Diethylene glycol ethyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, methoxytriglycol, ethoxytriglycol, butoxytriglycol, 1-butoxyethoxy-2-propanol, 3-methyl-3-methoxybutanol, propylene glycol t-butyl ether, di-n-octyl ether and mixtures of these Solvent. However, it is preferred that the detergent contains an alcohol, in particular ethanol and/or glycerol, in proportions by mass of between 0.5 and 5%, based on the total mass of the detergent.

The customary enzyme stabilizers that may be present, especially in liquid detergents, include amino alcohols, for example mono-, di-, triethanolamine and propanolamine and mixtures thereof, lower carboxylic acids, boric acid, alkali metal borates, boric acid-carboxylic acid combinations, boric acid esters, boric acid derivatives, calcium salts, for example Ca-formic acid combination, magnesium salts, and/or sulphur-containing reducing agents.

Other suitable surface-active ingredients are soaps, preference being given to soaps containing C ₁₂ -C ₁₈ fatty acids. They can also be in the form of their sodium, potassium, magnesium or ammonium salts.

In addition to cellulase, the detergent according to the invention can also contain one or more enzymes.

In principle, all enzymes established in the prior art for these purposes can be used in this regard. It is preferably one or more enzymes which can develop a catalytic activity in a detergent, in particular a protease, amilase, lipase, mannanase, pectin-splitting enzyme, tannase, xylanase, xanthanase, β -glucosidase, carrageenase, perhydrolase, oxidase , oxidoreductase and mixtures thereof. Preferred hydrolytic enzymes include in particular proteases, amylases, in particular α -amylases, lipases, in particular pectinase, mannanase, β -glucanases, and mixtures thereof. These enzymes are in principle of natural origin. Based on the natural molecules, improved derivatives are available for use in detergents, which are used with preference accordingly.

1. a) Bereitstellen eines wie vorstehend definierten Waschmittels und
2. b) In-Kontakt-Bringen eines Textils mit dem Waschmittel.

Furthermore, according to the invention, a washing process is also described which comprises the following process steps:

1. a) providing a detergent as defined above and
2. b) contacting a textile with the detergent.

For this purpose, the detergent can be prepared in the form of a solution in order to facilitate contact with the textile. The softness, the drapability and/or the tear resistance of the textile can be improved by using or carrying out the method according to the invention. Alternatively or additionally, pills can be avoided or removed and graying can be prevented or graying can be removed, as a result of which the treated textiles appear lighter or whiter.

According to a further aspect of the present invention, the use of a detergent as disclosed above to improve softness, drapability and/or tear strength, to remove or avoid pills and to improve the rewhite effect, i.e. to reduce the graying of textiles, is also described . These effects are achieved by the active substance combination of at least one amodimethicone/organosilicon copolymer and cellulase present in the detergent according to the invention.

examples Example 1: Detergent

The following detergents were made by mixing. Detergents B and C are embodiments of the invention, while detergents A, D and and E were used as a reference and did not contain a combination of at least one amodimethicone/organosilicon copolymer and cellulase. or were outside the range of the invention (Example E). Table 1: Composition of liquid detergents A (reference) mass fraction [%] B (according to the invention) mass fractions [%] C (according to the invention) mass fraction [%] boric acid 0.50 0.50 0.50 citric acid 0.23 0.23 0.23 glycerin 0.50 0.50 0.50 anionic surfactants 5.5 5.5 5.5 nonionic surfactants 3.1 3.1 3.1 NaOH 0.70 0.70 0.70 soap 0.50 0.50 0.50 preservatives 0.050 0.050 0.050 phosphonate DTPMP 0.20 0.20 0.20 brightener 0.1 0.1 0.1 cellulase 0.01 0.01 0.01 Enzyme mix (without cellulase) 0.99 0.99 0.99 Perfume 0.5 0.5 0.5 dye 0.003 0.003 0.003 Amodimethicone/Organosilicon Copolymer ^∗ 0 0.05 0.1 water to 100 to 100 to 100 ^∗ Hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)siloxane (Belsil ^® ADM 8301 E, Wacker) was used as the amodimethicone/organosilicon copolymer. D (reference) mass fractions [%] E (reference) mass fraction [%] C _12-18 fatty alcohol with 7 EO 2 2 C _12-18 fatty alcohol sulfate with 7 EO, sodium salt 1.5 1.5 Linear alkyl benzene sulfonate, sodium salt 10 10 sodium 20 20 sodium bicarbonate 6.5 6.5 sodium disilicate 4 4 Sodium percarbonate 17 17 TAED 4 4 polyacrylate, sodium salt 3 3 carboxymethyl cellulose 1 1 sodium phosphonate 1 1 sodium sulfate 29 28.9 cellulase 0.01 0.01 Enzyme mix (without cellulase) 0.99 0.99 Amodimethicone/organosilicon copolymer 0 0.1 ^∗ Hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)siloxane (Belsil ^® ADM 8301 E, Wacker) was used as the amodimethicone/organosilicon copolymer.

Example 2: Improvement in softness

Knitted fabrics made from 100% viscose were tested for softness after washing with Detergents A, B and C of Example 1. The textiles tested were washed ten times in a Miele Novotronic W1514 in the easy-care+ program at 40° C. at 16° DH, 800 rpm with a dosage of 60 ml each of detergents A, B and C from Example 1 and a load of 2.5 kg washed in the presence of an SBL 2004 cloth and then line dried.

The measurements were carried out using a PhabrOmeter (from Nu Cybertek) using the “extraction method”.

With this method, all relevant information on textile products in relation to their grip (including tensile, shear, bending and frictional forces) is recorded. In the extraction method, which is carried out using a ^{PhabrOmeter®} (Nu Cybertek, Inc., CA, USA), a fabric sample is pulled through a precisely defined nozzle and the resistance of the fabric when pulled through is recorded in a force-displacement curve. The passage is all the easier, and with it the effort (Energy expenditure) lower, the softer the fabric is. To determine the softness, the area under the force-displacement curve obtained is calculated. The lower this value, the greater the softness of the textile. Table 3: Softness measurement results laundry detergent readings Composition A 11.69 Composition B 10:42 Composition C 10.44

It turns out that the use of an active ingredient combination of cellulase and amodimethicone/organosilicon copolymer resulted in lower measured values. A lower measured energy means that less force is required to pull the textile through and thus a greater softness of the fabric. The test results obtained prove that the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer improves the softness of the textile after washing.

Example 3: Improvement in drapability

The textiles washed in Example 2 were also tested for their drapability after the wash cycles. The values for this were also determined from the measured force-displacement curve. Table 4: Drapability results laundry detergent readings Composition A 11:37 Composition B 9.98 Composition C 9.99

The lower the determined value, the better textiles can be draped. The experiment showed that the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer improves the drapability.

Example 4: Improvement in tear strength

To determine the tear propagation resistance of textiles after repeated washing cycles, the tested textiles were pre-damaged five times in a Miele Novotronic W1514 with a powder formulation and then in the easy-care+ program at 40 °C, 16 °DH, 800 rpm with a dosage of 60 ml of detergent A, B and C from Example 1 and a 2.5 kg load were washed ten times in the presence of an SBL 2004 cloth and line dried each time. The textiles tested are standard WFK fabrics (10A 100% cotton, 20A 50% polyester/50% cotton, 30A 100% polyester) and commercial textiles (100% cotton, 50% cotton/50% polyester, 100% polyester ).

The tear propagation strength of the textiles washed with and without the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer was determined using the Elmendorf method (DIN EN ISO 13937-1:2000) with the ballistic pendulum (Textest FX 3750 Elmendorf tester, Textest AG, Schwerzenbach, Switzerland). For this purpose, a measurement sample was placed in clamps and cut 20 mm (± 0.5 mm) deep, leaving a tear propagation path of 43 mm (± 0.5 mm). The pendulum was then released and stopped after a full swing of the pendulum. The tear propagation force in Newtons was displayed on a digital display of the measuring device and evaluated statistically. From this, the arithmetic mean of the tear strength was calculated.

The results for the warp tear propagation test are shown in Table 5. Table 5: Tear propagation test results WFK10A [cN] WFK20A [cN] WFK30A [cN] Fabric 100% Co [cN] Fabric 100% PES [cN] Unwashed 1662 2216 6800 1216 1114 Previously damaged 1400 1962 4054 884 1084 Composition A 1154 1866 4016 860 1188 Composition B 1150 2096 4136 865 1160 Composition C 1228 2014 4052 872 1192

It is shown that the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer results in higher measurement values than for textiles washed with the reference detergent without the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer. These higher readings reflect improved tear resistance of the fabrics after washes with a detergent containing a combination of cellulase and an amodimethicone/organosilicon copolymer.

Example 5: Anti-Pilling Boosting

To assess anti-pilling performance, EMPA 253 fabric was used in the wash cycle. The textiles tested were 20- times washed in the presence of an SBL 2004 cloth and then line dried. The EMPA 253 fabrics were evaluated visually on a scale of 1 to 5 after ten, 15 and 20 wash cycles in accordance with DIN EN ISO 12945-2:2000. Results were converted to % Pills Removal. Table 6: Pill removal results % removal Pills after Composition A Composition B Composition C 10 washing cycles 27.8 33.3 33.3 15 washing cycles 63.9 66.7 69.4 20 wash cycles 72.2 75.0 75.0

It was found that the addition of a combination of cellulase and an amodimethicone/organosilicon copolymer increased pill removal.

Example 6: Reduction of graying (rewhite effect - whitening boost effect)

The reduction in graying and thus a lightening of the textiles was tested on cotton, polyester, polyacrylic and polyamide textiles. The textiles tested were washed in a Miele Novotronic W1514 in the easy-care program (at 40 °C at 16 °DH, 800 rpm with a dosage of 40 ml of the detergent to be used afterwards (detergent A in row A, detergent B in row B, etc .) washed twice in the presence of a Greying Swatch with a load of 2.5 kg and then line dried.

The textiles were then washed five more times in the easy-care+ program at 40° C., 16° DH, 800 rpm with a dosage of 60 ml of detergents A and B from Example 1 and a load of 2.5 kg and line-dried in between .

The brightness was evaluated spectrometrically. For this purpose, the Y-values of the various textiles were determined eight times using a Data Color Spektrafflash 600. The performance was due to the Differences in brightness determined before and at the end of the five wash cycles (Y). Table 7: Results of the brightness measurement initial value Composition A Composition B WFK 12A Terry towel 100% CO 75 83.5 84.4 EMPA 221 100% CO 75 81.2 81.3 100% PA 80 83.3 83.4 WFK 30A 100% PES 76 83.4 83.6 Polyacrylate 100% PAN 86 87.1 87.3

As can be seen, the values are higher when using a detergent with a combination of cellulase and an amodimethicone/organosilicon copolymer, indicating that the laundry has become lighter.

Claims (13)

1. Use of an amodimethicone/organosilicon copolymer for improving the drapeability of textiles after washing.
2. Use of an amodimethicone/organosilicon copolymer for improving the tear resistance of textiles after washing.
3. Use of an amodimethicone/organosilicon copolymer for reducing the graying of textiles.
4. Use according to any one of the preceding claims, wherein the amodimethicone/organosilicon copolymer is hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)-siloxane.
5. Washing agent for textiles containing at least one amodimethicone/organosilicon copolymer and cellulase, wherein the mass ratio of amodimethicone/oranosilicon copolymer to cellulase is 5:1 to 1:1.
6. Washing agent according to claim 5, wherein the amodimethicone/organosilicon copolymer is hydroxy-terminated poly[3-((2-aminoethyl)amino)propyl]methyl(dimethyl)siloxane.
7. Washing agent according to claim 5 or 6, wherein a mass fraction of
   amodimethicone/organosilicon copolymer, based on the total mass of the washing agent, is 0.001% to 5%, in particular 0.01% to 1%.
8. Washing agent according to any one of claims 5 to 7, wherein a mass fraction of cellulase, based on the total mass of the washing agent, is 0.001% to 1%, in particular 0.005% to 0.3%.
9. Washing agent according to any one of claims 5 to 8, wherein the washing agent further comprises at least one surfactant, wherein a mass fraction of surfactant, based on the total mass of the washing agent, is in particular 1% to 50%.
10. Washing process comprising the process steps:

    a) providing a washing agent according to any one of claims 5 to 9; and

    b) bringing a textile into contact with the washing agent.
11. Use of a washing agent according to any one of claims 5 to 9 for improving the softness of textiles after washing, and/or for improving the drapeability of textiles after washing, and/or for improving the tear resistance of textiles after washing.
12. Use of a washing agent according to any one of claims 5 to 9 for preventing and/or removing pills.
13. Use of a washing agent according to any one of claims 5 to 9 for reducing the graying of textiles.