EP0705328A1

EP0705328A1 - Washing agents with decolorization-inhibiting properties

Info

Publication number: EP0705328A1
Application number: EP94919631A
Authority: EP
Inventors: Eduard Smulders; Günther VOGT; Gertrud Nienhaus
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 1993-06-23
Filing date: 1994-06-15
Publication date: 1996-04-10
Also published as: DE4320851A1; WO1995000627A1

Abstract

Described are washing agents which possess decolorization-inhibiting properties without the need for the addition of one of the usual colour-transfer inhibitors such as PVP. These properties are due to the fact that the agents contain 10 to 30 % by wt. of non-ionic surfactants, 0 to 10 % by wt. of anionic surfactants, 1 to 6 % by wt. of fatty-acid soaps and 20 to 60 % by wt. of builders selected from the group comprising zeolites (anhydrous active substances) and phyllosilicates.

Description

"Detergent with discolouration-inhibiting properties"

The invention relates to a solid, preferably granular detergent, which prevents the transfer of detached dyes during washing to other washed textiles without the addition of discoloration inhibitors such as polyvinylpyrrolidone.

When washing colored textiles or textile sections with undyed or light-colored textiles or textile parts at the same time, it is frequently observed that dye is transferred from the more colored textiles or textile parts to the undyed or light-colored textiles or textile parts and the original color tone is thereby changed. In the same way, this also applies to the transmission of optical brighteners with which textiles are often equipped by the manufacturer or by washing with detergents containing brighteners. Preventing or reducing this undesired transfer of dyes or optical brighteners is the subject of numerous patent applications. A means which is well suited for the desired prevention of discoloration is polyvinyl pyrrolidone (PVP). An example of patent applications in which PVP is described alone or in combination with other active ingredients in detergents is the German patent application DE-A-2232353. It is essential that the detergent with the addition of PVP is essentially free of anionic surfactants. According to the disclosure of German patent application DE-A-35 19 012, the presence of strong electrolytes also reduces the effect of PVP. On the other hand, the PVP-containing agents in European patent application EP-A-0262897 have both relatively small amounts of anionic surfactants and electrolytes. It is essential that the nonionic surfactants used or their mixture have an HLB value of at most 10.5. The international patent application WO 92/18597 describes agents containing anionic surfactants and electrolytes which contain PVP with a low relative molecular weight between 5000 and 22000, while in the international application WO 92/18598 cellulase is additionally used to support the discoloration-inhibiting action of the PVP . In the more recent registrations, Weight ratios of anionic surfactants to PVP used, which are usually at least 3: 1, for example in the range from 4: 1 to 16: 1 or well above. According to the older publication mentioned, however, the relatively high amounts of anionic surfactants accept a reduced effect of the PVP.

European patent application EP-A-0451 894 describes granular detergents with bulk densities of at least 600 g / l and improved washing-in behavior, which contain 5 to 45% by weight of a ternary surfactant system composed of anionic surfactants, nonionic surfactants and soap. wherein the weight ratio of anionic surfactants to nonionic surfactants is less than 5: 1 and the proportion of soap in the surfactant system is 10 to 90% by weight.

Since it was known from the prior art that the effect of PVP as a color transfer inhibitor depends to a large extent on the formulation, the object of the invention was to design a detergent which has discoloration-inhibiting properties without the usual color transmission inhibitor such as PVP is used.

The invention accordingly relates to a solid, preferably granular detergent with discoloration-inhibiting properties, which comprises 10 to 30% by weight of nonionic surfactants, 0 to 5% by weight of anionic surfactants, 1 to 6% by weight of fatty acid soaps, 20 to 60% % By weight of builder substances from the group of zeolites (anhydrous active substance) and layered silicates, but is free of polyvinylpyrrolidone.

The detergents according to the invention preferably have a weight ratio of nonionic surfactants to anionic surfactants of more than 2: 1 and in particular more than 2.5: 1, for example 3: 1 and above.

The nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary alcohols having preferably 8 to 18 carbon atoms and an average of 1 to 30 moles of ethylene oxide (E0) per mole of alcohol in which the alcohol radical has a methyl or linear branching in the 2-position may be, or may contain linear and methyl-branched residues in the mixture, as is usually the case in oxo alcohol most available. However, alcohol ethoxylates with linear residues of alcohols of native origin with 12 to 18 carbon atoms, for example from coconut, palm, tallow or oleyl alcohol, and an average of 2 to 20 E0 per mole of alcohol are particularly preferred. The preferred ethoxylated alcohols include, for example, Cχ2-Ci4 alcohols with 3 E0 or 4 E0, Cg-Cn alcohol with 7 E0, Ci3-Ci5 alcohols with 3 E0, 5 E0, 7 E0 or 8 E0, Ci2-Ci8- Alcohols with 3 E0, 5 E0 or 7 E0 and mixtures of these, such as mixtures of Ci2-Ci4-alcohol with 3 E0 and C] .2-Ci8-alcohol with 5 E0, and alcohols of this type with 11, 14 or 16 E0. The degrees of ethoxylation given represent statistical averages, which can be an integer or a fraction for a specific product. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). The compositions preferably contain 12 to 25% by weight of alkoxylated C 3 -C 10 alcohols and in particular 13 to 20% by weight of ethoxylated fatty alcohols.

Another class of preferably used nonionic surfactants, which are used either as the sole nonionic surfactant or in combination with other nonionic surfactants, in particular together with alkoxylated fatty alcohols, are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated, fatty acid alkyl esters, preferably with 1 to 4 carbon atoms in the alkyl chain, in particular fatty acid methyl esters, as described, for example, in Japanese Patent Application JP-A-58/217598 or preferably according to the process described in international patent application WO-A-90/13533 ¬ be put. The agents contain alkoxylated fatty acid alkyl esters preferably in amounts of 2 to 25% by weight, in particular in amounts of 5 to 20% by weight. Mixtures of ethoxylated fatty alcohols and alkoxylated fatty acid alkyl esters in a weight ratio of 3: 1 to 1: 3 are particularly preferred.

In addition, alkyl glycosides of the general formula R0 (G) _x can also be used as further nonionic surfactants, in which R is a primary straight-chain or methyl-branched aliphatic radical with 8 to 22, preferably 12 to 18, C. -Atoms means and G is the symbol which stands for a glycose unit with 5 or 6 carbon atoms, preferably for glucose. The degree of oligomerization x, indicating the distribution of monoglycosides and oligoglycosides is any number between 1 and 10; x is preferably 1.2 to 1.4. The content of alkylglycosides in the compositions is generally about 0 to 15% by weight and preferably 2 to 10% by weight.

Nonionic surfactants of the amine oxide type, for example N-coconut alkyl-N, N-dimethylamine oxide and N-tallow alkyl-N, N-dihydroxyethylamine oxide, and the fatty acid alkanolamides can also be suitable. The amount of these nonionic surfactants is preferably not more than that of the ethoxylated fatty alcohols and the alkoxylated fatty acid alkyl esters, in particular not more than half of them.

Other suitable surfactants are polyhydroxy fatty acid amides of the formula (I),

R3

I.

R ² -C0-N- [Z] (I)

in the R ^ CO for an aliphatic acyl radical with 6 to 22 carbon atoms, R ^ for hydrogen, an alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms and [Z] for a linear or branched polyhydroxyalkyl radical with 3 to 10 carbon atoms and 3 to 10 hydroxyl groups. The polyhydroxy fatty acid amides are known substances which can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride.

In addition to the nonionic surfactants, the agents can contain anionic surfactants in amounts of preferably 0.5 to 8% by weight and in particular up to 5% by weight, preference being given, for example, to those of the sulfonate and / or sulfate type.

Preferred surfactants of the sulfonate type are the known C9-C13-alkylbenzenesulfonates, olefin sulfonates and alkanesulfonates. Also suitable are esters of α-sulfo fatty acids or the disalts of the α-sulfo fatty acids. Other suitable anionic surfactants are sulfonated fatty acid glycerol esters, which are mono-, di- and triesters and their mixtures, such as those produced by esterification by a monoglycerol with 1 to 3 mol of fatty acid or in the transesterification of triglycerides with 0.3 to 2 Moles of glycerol can be obtained.

Suitable sulfate-type surfactants are the sulfuric acid monoesters from primary alcohols of natural and synthetic origin. The alk (en) yl sulfates are the sulfuric acid half-esters of the Ci2-Ci8 fatty alcohols, for example from coconut oil alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol, or the Cιo-C2θ-O ^χo alcohols, and those secondary alcohols this chain length preferred. Also preferred are alk (en) yl sulfates of the chain length mentioned which contain a synthetic, straight-chain alkyl radical prepared on a petrochemical basis and which have a degradation behavior analogous to that of the adequate compounds based on oleochemical raw materials. Ci6-Ci8-alk (en) yl sulfates are particularly preferred from the point of view of washing technology. It can also be particularly advantageous, and particularly advantageous for machine washing agents, to use Ci6-Ci8-alk (en) yl sulfates in combination with lower melting anionic surfactants and in particular with those anionic surfactants which have a lower Krafft point and with relatively low detergents temperatures of, for example, room temperature to 40 ° C. show a low tendency to crystallize. In a preferred embodiment of the invention, the compositions therefore contain mixtures of short-chain and long-chain fatty alkyl sulfates, preferably mixtures of C12-C14-fatty alkyl sulfates or Ci2-Ci8-fatty alkyl sulfates with cis-Ciβ-fatty alkyl sulfates and in particular Ci2-Ci6-fatty alkyl sulfates with Ci6 -Cj8 fatty alkyl sulfates. In a further preferred embodiment of the invention, however, not only saturated alkyl sulfates but also unsaturated alkenyl sulfates with an alkenyl chain length of preferably C15 to C22 are used. Mixtures of saturated sulfated fatty alcohols consisting predominantly of Ciö and unsaturated sulfated fatty alcohols consisting predominantly of cis are particularly preferred, for example those which are derived from solid or liquid fatty alcohol mixtures of the HD-Ocenol ( ^R ) type (commercial product) of the applicant). Are there Weight ratios of alkyl sulfates to alkenyl sulfates from 10: 1 to 1: 2 and in particular from about 5: 1 to 1: 1 are preferred.

The sulfuric acid monoesters of the straight-chain or branched C7-C2i-alcohols ethoxylated with 1 to 6 mol of ethylene oxide, such as 2-methyl-branched Cg-Cn-alcohols with an average of 3.5 mol of ethylene oxide (E0) or Ci2-Ci8 -Fatty alcohols with 2 to 4 E0 are suitable. Because of their high foaming behavior, they are only used in relatively small amounts in detergents.

The content of the agents in anionic surfactants and in particular in saturated and / or unsaturated fatty alk (en) yl sulfates, which are optionally ethoxylated, is preferably 0.5 to 8% by weight and in particular up to 5% by weight.

Suitable anionic surfactants are also the salts of alkylsulfosuccinic acid, which are also referred to as sulfosuccinates or as sulfosuccinic acid esters and which are monoesters and / or diesters of sulfosuccinic acid with alcohols, preferably fatty alcohols and in particular ethoxylated fatty alcohols. It is also possible to use alk (en) ylsuccinic acid with preferably 8 to 18 carbon atoms in the alk (en) yl chain or salts thereof.

Other components of the agents according to the invention are soaps, preferably in amounts of 2 to 5% by weight. Saturated fatty acid soaps are suitable, such as the salts of lauric acid, myristic acid, palmitic acid or stearic acid, and in particular from natural fatty acids, e.g. Coconut, palm kernel or tallow fatty acids, derived soap mixtures. In particular, those soap mixtures are preferred which are composed of 50 to 100% by weight of saturated Ci2-C24 fatty acid soaps and 0 to 50% by weight of oleic acid soap.

The anionic surfactants and the soaps can be present in the form of their alkali metal salts, such as the sodium, potassium or ammonium salts, and as soluble salts of organic bases, such as mono-, di- or triethanolamine. Preferred the anionic surfactants and soaps are present in the form of their sodium or potassium salts, in particular in the form of the sodium salts, I

In addition, the agents can contain so-called detergency boosters, which are known as such from the prior art. Preferred detergent boosters are quaternary ammonium salts such as tri-alkyl-methylammonium halide, ethoxylated alkylamines such as cocoalkylamine with 2 EO and 1,2-alkanediols with 10 to 18 carbon atoms and 0 to 4 EO such as 1,2-dodecanediol or 1,2- Tetradecanediol.

Another essential feature is the content of builder substances, which are inorganic in nature. Here, builder substances such as zeolites and layered silicates come into consideration. In a preferred embodiment of the invention, in addition to these inorganic, organic builder substances are also present in the compositions.

The fine crystalline, synthetic and bound water-containing zeolite used is preferably zeolite NaA in detergent quality. However, zeolite X or zeolite P and mixtures of NaA and NaX are also suitable. The zeolite can be used as a spray-dried powder or as an undried stabilized suspension which is still moist from its production. In the event that the zeolite is used as a suspension, it may contain minor additions of nonionic surfactants as stabilizers, for example 1 to 3% by weight, based on zeolite, of ethoxylated C 12 -C 8 -fatty alcohols with 2 to 5 ethylene oxide groups or ethoxylated isotridecanols. Suitable zeolites have an average particle size of less than 10 μm (volume distribution; measurement method: Coulter Counter) and preferably contain 18 to 22, in particular 20 to 22% by weight of bound water.

Suitable substitutes or partial substitutes for the zeolite are layer silicates of natural and synthetic origin. Layered silicates of this type are known, for example, from patent applications DE-B-23 34 899, EP-A-0 026 529 and DE-A-35 26 405. Their usability is not limited to a special composition or structural formula. However, smectites, in particular bentonites, are preferred here. Other suitable substitutes or partial substitutes for the zeolite are crystalline, layered sodium silicates of the general type. Formula NaMSi _x θ2χ + yH2θ, where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20 and are preferred values for x 2, 3 or 4. Such crystalline layered silicates are described, for example, in European patent application EP-A-0 164 514. Preferred crystalline sheet silicates of the formula given are those in which M represents sodium and x assumes the values 2 or 3. In particular, both β- and δ'-sodium diSilicates Na2Si2θ5'yH2θ are preferred, β-sodium disilicate being able to be obtained, for example, by the process described in international patent application WO-A-91/08171.

The zeolite content of the agents (based on anhydrous active substance) and / or optionally crystalline layered sodium silicates is preferably 25 to 55% by weight and in particular 30 to 45% by weight, the use of zeolite or of zeolite and crystalline layered sodium silicates in a weight ratio of 4: 1 to 1: 2, advantageously from 3: 1 to 1: 1, particularly preferred.

Usable organic builders are, for example, the polycarboxylic acids preferably used in the form of their salts, such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), provided that such use is not objectionable for ecological reasons. and mixtures of these. Preferred salts are the sodium salts of polycarboxylic acids such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids and mixtures of these. Their content in the compositions is preferably 2 to 20% by weight. In addition to zeolite-containing agents, zeolite-free agents are preferred which contain crystalline layered silicates and polycarboxylates, in particular citrate, and optionally alkali metal carbonates as builders.

Suitable polymeric polycarboxylates are, for example, the sodium salts of polyacrylic acid or polymethacrylic acid, for example those with a relative molecular weight of 800 to 150,000 (based on acid). - Suitable copolymeric polycarboxylates are, in particular, those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid. Copolymers of acrylic acid with maleic acid which contain 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable. Their relative molecular weight, based on free acids, is generally 5,000 to 200,000, preferably 10,000 to 120,000 and in particular 50,000 to 100,000. In particular, polymeric polycarboxylates which are biodegradable are preferred. These include, for example, terpolymers which contain salts of acrylic acid and maleic acid as well as vinyl alcohol or vinyl alcohol derivatives as monomers or which contain salts of acrylic acid and 2-alkylallylsulfonic acid and sugar derivatives as monomer and which are described in the earlier German patent applications P 4221 381.9 and P 4300722.4. The content of the polymeric polycarboxylates and in particular of the biodegradable terpolymers is preferably 2 to 7% by weight.

Other suitable builder substances are polyacetals, which can be obtained by reacting dialdehydes with polyolcarboxylic acids which have 5 to 7 carbon atoms and at least 3 hydroxyl groups, for example as described in European patent application EP-A-0 280 223. Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde and their mixtures and from polyol carboxylic acids such as gluconic acid and / or glucoheptonic acid.

Other suitable ingredients of the agents are water-soluble inorganic salts such as bicarbonates, carbonates, amorphous silicates or mixtures of these; in particular, alkali carbonate and amorphous alkali silicate, especially sodium silicate with a molar ratio Nβ2θ: Siθ2 of 1: 1 to 1: 4.5, preferably from 1: 2 to 1: 3.5, are used. The content of sodium carbonate in the agent is preferably up to 15% by weight, advantageously between 2 and 10% by weight. The amorphous sodium silicate content of the agents is generally up to 10% by weight and preferably between 2 and 8% by weight.

In addition to the ingredients mentioned, the agents can include known additives, for example graying agents, commonly used in detergents. ungsinhibitoren, foam inhibitors, salts of polyphosphonic acids, enzymes, enzyme stabilizers, small amounts of neutral filler salts as well as colors and fragrances and possibly also optical brighteners. The agents may also optionally contain bleaches. It was found that compositions, in particular with bleach contents of up to, for example, about 10% by weight, have advantages in terms of primary washing power without the performance of the ink transfer inhibition of the composition being adversely affected. In particular, the use of peroxy bleaching agents such as perborate tetrahydrate, perborate monohydrate and percarbonate, if appropriate in combination with conventional bleach activators such as N, N, N ', N'-tetraacetylethylene diamine, is preferred.

When used in machine washing processes, it can be advantageous to add conventional foam inhibitors to the agents. Suitable foam inhibitors are, for example, soaps of natural or synthetic origin that have a high proportion of C 1 -C 24 fatty acids. The proportions of these soaps in the compositions are included in the amounts of soap specified above. Suitable non-surfactant-like foam inhibitors are, for example, organopolysiloxanes and their mixtures with microfine, optionally silanized silica, and paraffins, waxes, microcrystalline waxes and their mixtures with silanized silica or bistearylethylenediamide. Mixtures of various foam inhibitors are also used with advantages, e.g. those made of silicone, paraffins or waxes. The foam inhibitors, in particular silicone or paraffin-containing foam inhibitors, are preferably bound to a granular, water-soluble or dispersible carrier substance. Mixtures of paraffins and bistearylethylenediamides are particularly preferred.

In addition, the agents can also contain components which have a positive effect on the ability to wash off fat and fat from textiles. This effect is particularly evident when a textile is contaminated which has already been washed several times beforehand with a detergent according to the invention which contains these oil- and fat-dissolving components. The preferred oil- and fat-dissolving components include, for example, nonionic cellulose ethers such as methyl hydroxypropyl cellulose with a proportion of methoxyl groups from 15 to 30% by weight and of hydroxypropoxyl groups from 1 to 15% by weight, in each case based on the nonionic cellulose ether and the polymers of phthalic acid and / or terephthalic acid or their derivatives known from the prior art, in particular polymers of ethylene terephthalates and / or polyethylene glycol terephthalates.

Graying inhibitors have the task of keeping the dirt detached from the fiber suspended in the liquor and thus preventing graying. Water-soluble colloids of mostly organic nature are suitable for this, for example the water-soluble salts of polymeric carboxylic acids, glue, gelatin, salts of ether carboxylic acids or ether sulfonic acids of starch or cellulose or salts of acidic sulfuric acid esters of cellulose or starch. Water-soluble polyamides containing acidic groups are also suitable for this purpose. Soluble starch preparations and starch products other than those mentioned above can also be used, e.g. degraded starch, aldehyde starches, etc. However, preference is given to using cellulose ethers, such as carboxymethyl cellulose, methyl cellulose, hydroxyalkyl cellulose, and mixed ethers, such as methyl hydroxyethyl cellulose, methyl hydroxypropyl cellulose, methyl carboxymethyl cellulose and mixtures thereof.

Suitable enzymes are those from the class of proteases, lipases, amylases, cellulases or mixtures thereof. Enzymatic active ingredients obtained from bacterial strains or fungi such as Bacillus subtilis, Bacillus licheniformis and Streptomyces griseus are particularly suitable. Proteases of the subtilisin type and in particular proteases which are obtained from Bacillus lentus are preferably used. Enzyme mixtures, for example of protease and amylase or protease and lipase or protease and cellulase or of cellulase and lipase or of protease, amylase and lipase or protease, lipase and cellulase, in particular mixtures containing cellulase, are of particular interest. (Per) oxidases have also proven to be suitable in some cases. The enzymes can be adsorbed on carriers and / or embedded in Hü11 substances to protect them against premature decomposition. The proportion of the enzymes, enzyme mixtures or enzyme granules can be, for example, about 0.1 to 5% by weight, preferably up to about 2% by weight. The salts of polyphosphonic acids, in particular l-hydroxyethane-l, l-diphosphonic acid (HEDP), are suitable as stabilizers. It is also possible to use proteases, which are stabilized with soluble calcium salts and a calcium content of preferably about 1.2% by weight, based on the enzyme. However, the use of boron compounds, for example boric acid, boron oxide, borax and other alkali metal borates such as the salts of orthoboric acid (H3BO3), metaboric acid (HBO2) and pyroboric acid (tetraboric acid H2B4O7), is particularly advantageous.

The bulk density of the preferred granular agents is generally 300 to 1100 g / 1, in particular 500 to 1000 g / 1. They can be prepared by any of the known processes, such as mixing, spray drying, granulation and extrusion, although spray drying processes are less preferred owing to the known pluming behavior of the nonionic ethoxylated alcohols. Processes in which several partial components, for example spray-dried components and granulated and / or extruded components, are mixed with one another are also particularly suitable. It is also possible for spray-dried or granulated components to be subsequently treated in the preparation, for example with nonionic surfactants, in particular ethoxylated fatty alcohols, by the customary processes. In granulation and extrusion processes in particular, it is preferred to add the anionic surfactants that may be present in the form of a spray-dried, granulated or extruded compound either as an admixture component in the process, in extrusion in particular for producing a solid premix intended for extrusion, or as an additive use other granules. It is also possible and, depending on the recipe, to be advantageous if further individual constituents of the composition, for example carbonates, citrate or citric acid or other polycarboxylates or polycarboxylic acids, polymeric polycarboxylates, zeolite and / or layered silicates, which, if appropriate can be crystalline, subsequently mixed to spray-dried, granulated and / or extruded components, which are optionally treated with nonionic surfactants and / or other liquid to waxy ingredients at the processing temperature. A method is preferred in which the surface of partial components of the agent or of the entire agent is subsequently treated to reduce the stickiness of the granules rich in nonionic surfactants and / or to improve their solubility. delt is. Suitable surface modifiers are known from the prior art. In addition to other suitable, finely divided zeolites, silicas, amorphous silicates, fatty acids or fatty acid salts, for example calcium stearate, are particularly preferred, but mixtures of zeolite and silicas or zeolite and calcium stearate are particularly preferred.

Examples

Agents Ml to M7 according to the invention were produced by extrusion, the enzymes being subsequently added. The anionic surfactant was premixed and extruded together with the other constituents as a granulated compound, prepared according to the teaching of application DE-A-4127323.

Table 1: Compositions of agents Ml to M7 and VI to V2 in% by weight

Continuation of table 1:

r Ml M2 M3 M4 M5 M6 M7 VI V2

BASF, Federal Republic of Germany

Sokalan DCS ( ^R ) 2 2 2 3 3 3 (dicarboxylic acid salts, hand-made product from BASF)

Sodium silicate, 4 4 3 2 3 7 6 1.5 1.5 amorphous a2θ: Siθ21: 2.0

Perborate monohy- - - - 8 5 - - - - third

Protease 0.2 0.5 0.2 0.3 0.1 0.2 0.2 0.4 0.4 Lipase 0.2 0.2 0.1 0.3 0.2 0.2 Cellulase 0, 2 0.2 0.3 0.1 0.2 1.0 0.2 0.2 Amylase 0.1 0.1 0.1 0.2

Polyvinyl 1 pyrrolidone

Sodium sulfate 1 2 6 - 2 8 4 6 5

Water and salt residue from solutions

To determine the color transfer inhibition, white test strips made from cotton, polyester, cotton and viscose and from viscose with colored fabrics containing blue, red, brown, black and green dyes in a launderometer (60 ° C, 16 ° d, detergent dosage: 5 , 0 g / 1) with Ml and M3 and the comparative VI and V2. The white value of the test strips was then determined. The anionic surfactant-containing Ml had significantly better white values than VI and, on average, about the same good white values as V2. With blue and red dyes, the anionic surfactant-free M3 had significantly better whiteness values than Ml and VI, but was overall somewhat worse than Ml and V2.

Claims

claims

1. Solid, preferably granular detergent with discoloration-inhibiting properties, characterized in that it contains 10 to 30% by weight nonionic surfactants, 0 to 10% by weight anionic surfactants, 1 to 6% by weight fatty acid soap, 20 to 60% by weight .-% contains builders from the group of zeolites (anhydrous active substance) and layered silicates, but is free of polyvinylpyrrolidone.

2. Composition according to claim 1, characterized in that it contains 0.5 to 8% by weight and in particular up to 5% by weight of anionic surfactants.

3. Composition according to claim 1 or 2, characterized in that it has a weight ratio of nonionic surfactants to anionic surfactants of above 2: 1, preferably of more than 2.5: 1, in particular of 3: 1 and above.

4. Composition according to one of claims 1 to 3, characterized in that there are 12 to 25 wt .-% alkoxylated Cs-Ciβ alcohols and in particular 13 to 20 wt .-% ethoxylated fatty alcohols, 2 to 5 wt .-% alkali salts of Fatty acid soaps and 25 to 55% by weight, preferably 30 to 45% by weight, of 3 builders from the group of the zeolites (anhydrous active substance) and layered silicates, in particular zeolite NaA, bentonite and crystalline layered sodium silicates.

5. Composition according to one of claims 1 to 4, characterized in that it contains alk (en) yl sulfates, in particular saturated and / or unsaturated fatty alcohol sulfates, which are optionally ethoxylated, as anionic surfactants.

6. Composition according to one of claims 1 to 5, characterized in that it contains 2 to 20 wt .-% salts of polycarboxylic acids, in particular salts of citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, of sugar acids and mixtures of these.

7. Composition according to one of claims 1 to 6, characterized in that it contains 0.1 to 5 wt .-% cellulase or an enzyme mixture of cellulase and one or more enzymes from the group of proteases, lipases, amylases and (per) Contains oxidases.

8. Agent according to one of claims 1 to 7, characterized in that it contains up to 10 wt .-% peroxy bleach, preferably perborate or percarbonate.