EP0068232A2 - Liquid detergent containing dye transfer inhibition additives - Google Patents

Abstract

The detergent based on nonionic or zwitterionic surfactants contains synthetically prepared water-soluble amines and/or polymers having amino groups, from the class of polyethyleneimines, polyamines, polyaminoamides and polyacrylamides. A preferred composition contains a) 5 to 18 (7.5 to 12.5) per cent by weight of a certain fatty alcohol polyglycol ether having an ethylene oxide content of 55 to 65%, b) 5 to 18 (7.5 to 12.5) per cent by weight of a fatty alcohol polyglycol ether or oxo alcohol polyglycol ether having an ethylene oxide content of 60 to 70% in a relative ratio of a) to b) of 2 : 1 to 1 : 2, c) 0.2 to 2 per cent by weight of water-soluble polymers from the group comprising polyethyleneimines and polyamines, d) 2.5 to 4.0 per cent by weight of other water-soluble polymers. The remainder is made up of conventional additives for liquid detergents. The detergents are free of textile-softening quaternary ammonium compounds and substantially phosphate-free. Detergents of such a composition counteract staining of white or pale-coloured textiles by coloured textiles during joint washing.

Description

The present invention relates to a liquid detergent based on nonionic surfactants, which additionally contains certain water-soluble, synthetically produced, ionic polymeric compounds which counteract dye transfer from colored textiles to white or light-colored textiles during washing together.

Dye transfer when washing colored and white or light-colored textiles together has been a problem that has been known for a long time, for which there have already been some proposed solutions, but which are not entirely satisfactory because they are only marginal compared to a number of colors or textiles Have effect. For example, from DE-AS 22 32 353 an agent is known whose discoloration-inhibiting additive is polyvinylpyrrolidone. DE-OS 24 20 561 describes a detergent with a combination of alkali metal percarbonate and polyethylene glycol of a certain molecular weight and / or Pclyvinylpyrrolidor ,. DE-OS 23 09 099 relates to an agent with proportions of two different organic compounds that contain basic nitrogen atoms in the molecule. In US Pat. Nos. 4,005,029 and 4,006,092 agents are described which contain per compounds which have an anti-discoloring effect.

In German patent application P 30 26 090.3 it was proposed to add cationic starch ethers to prevent liquid transfer to liquid detergents based on certain nonionic surfactants and quaternary ammonium textile softening agents. DE-OS 28 28 619 describes a discoloration-inhibiting detergent composed of three different types of surfactants, namely 1. nonionic surfactants, 2. zwitterionic or semipolar and 3. cationic surfactants, which must be present in certain proportions.

It has now been found that a liquid detergent containing nonionic or zwitterionic surfactants in combination with synthetic, water-soluble, amino and / or amido group-containing polymers from the group of polyethyleneimines, polyamines, polyaminamides and polyacrylamides, the detergent containing no quaternary ammonium compounds which soften the textile and is essentially phosphate-free, has an improved discoloration-inhibiting effect not only on textiles made of cotton but also of synthetic fibers and mixtures of synthetic and natural fibers.

Such polymers, which can be used individually or optionally in combination with other water-soluble polymeric compounds in the detergents according to the invention, are known, synthetically produced compounds which are used, for example, in the paper industry as retention agents for better separation of the paper fiber raw materials and fillers. According to their structural structure, these polymers can be divided into four groups: polyethyleneimines, polyamines, polyaminamides and polyacrylamides.

Suitable polyethyleneimines are obtained by acid-catalyzed polymerization of ethyleneimine and can be modified by urea and epichlorohydrin or dichloroethane. Polyethyleneimines can contain primary, secondary and tertiary amino groups as well as quaternary ammonium groups. Aqueous solutions of polyethyleneimines react basicly. The molecular weight can be up to 100,000.

Polyamines are addition or condensation products from polyvalent aliphatic amines and substances with several reactive groups, e.g. Epichlorohydrin or alkylene dihalides. They therefore always contain several secondary, tertiary or quaternary nitrogen atoms, and possibly also hydroxyl groups in the molecule. Accordingly, they are hydrophilic, polar compounds that behave like polyelectrolytes and are water-soluble; unless they contain large hydrophobic groups in the molecule. The polyamines react basicly in aqueous solution. Suitable compounds are described, for example, in US Pat. No. 2,969,302.

Polyaminamides contain amino and amide at the same time. groups in the molecule. They are produced, for example, by condensation of polybasic acids, for example dibasic, saturated, aliphatic C ₃ - to C ₈ acids, and polyamines, and also with substances which contain several reactive groups, such as epichlorohydrin. These compounds also react basicly in aqueous solution. Suitable polyaminamides are described, for example, in US Pat. No. 2,926,154.

Suitable polyacrylamides are high molecular weight polymers with molecular weights of several million. By installation of carboxyl groups, which are formed, for example, by partial hydrolysis, in addition to amide groups, anionic polyacrylamides are obtained, while polyacrylamides containing amino groups react in a basic manner in aqueous solution. Amino groups can be introduced, for example, by reaction with alkali and hypobromite or hypochlorite.

All of the polymers mentioned have in common that they are water-soluble. Such polymers are commercially available products. Particularly suitable as an additive to the detergents according to the invention are the polyethyleneimines and polyamines which react strongly in water. Examples of commercially available particularly suitable polyethyleneimines are "Retaminol E" and for polyamines, e.g. "Retaminol K", from Bayer AG, Leverkusen, Federal Republic of Germany. These polymers can be added to the detergents according to the invention either alone or in combination with other water-soluble polymers. These are, for example, water-soluble resins made from melamine or urea and formaldehyde, e.g. the commercial products "Pressal R 50" or "Melan 125" from Henkel, Düsseldorf, Federal Republic of Germany. Further polymers which can be used as retention aids in papermaking and are suitable for the detergents according to the invention are described, for example, in "Encyclopedia of Polymer Science and Technology", Vol 9, p. 762, John Wiley & Sons, Inc., New York, 1968. The addition of these polymers to the detergents according to the invention, in combination with the abovementioned polymers containing amino and / or amido groups, enhances the discoloration-inhibiting effect.

The concentration of the polymers mentioned in a detergent according to the invention based on nonioni African, zwitterionic or amphoteric surfactants are in the range from about 1 to 1.5% by weight, preferably 5 to 5% by weight, based on the amount of surfactant in the detergent. The application concentration of the detergent is. in the range from 1 to 10 g / 1 wash liquor, preferably in the range from 3 to 6 g / l.

The detergents according to the invention are preferably phosphate-free; however, they can also contain small amounts of phosphate, which corresponds to about 3% by weight of phosphorus.

Addition products of 2-40, preferably 2-20, moles of ethylene oxide with 1 mole of fatty alcohol or oxo alcohol, alkylphenol, fatty acid, fatty amine, fatty acid amide or alkanesulfonamide can be used as nonionic surfactants. The addition products of 5-16 mol of ethylene oxide with coconut oil or tallow fatty alcohols, with oleyl alcohol or with secondary alcohols with 8-18, preferably 12-18, carbon atoms, and with mono- or dialkylphenols with 6-14 carbon atoms in, are particularly important the alkyl residues. In addition to these water-soluble nonionics, non-fully or not fully water-soluble polyglycol ethers with 1-4 ethylene glycol ether residues in the molecule are also of interest, in particular if they are used together with water-soluble nonionic or anionic surfactants.

Other suitable nonionic surfactants are the water-soluble, 20 to 250 ethylene glycol ether groups and 10 to 100 propylene glycol ether groups containing adducts of ethylene oxide with polypropylene glycol (= Pluro- nics ^(R)), alkylenediamine polypropylene glycol (= Tetronics ^(R)) and _A lkylpolypropylenglykole with 1 - 10 Carbon atoms useful in the alkyl chain in which the polypropylene glycol chain acts as a hydrophobic residue.

Also non-ionic. Amine oxide or sulfoxide type surfactants can be used.

The zwitterionic or amphoteric surfactants contain both acidic groups, such as the carboxyl, sulfo, sulfuric acid half-ester, phosphono or phosphoric acid partial ester groups, as well as basic groups, such as amino, imino or ammonium groups, in the molecule. Zwitterionic compounds with a tetrasubstituted, ie quaternary ammonium group are called betaines if they also have a covalently bound acid group in the molecule and the positive and negative charge is balanced intramolecularly. In a broader sense, the betaines also include the correspondingly substituted quaternary phosphonium and tertiary sulfonium compounds. On the nitrogen, the surface-active betaines generally have a higher molecular weight aliphatic hydrocarbon radical with a hydrophobic character and two lower alkyl radicals with 1-3 carbon atoms, which can be substituted by one or two hydroxyl groups or linked directly or via a hetero atom. The water-solubilizing carboxylate, sulfonate or sulfate group is linked to the ammonium nitrogen via the fourth substituent, which usually consists of a short-chain aliphatic radical which may have a double bond or a hydroxyl group. Also suitable as surfactants are sulfonate betaines in which the anionic, water-solubilizing group is bonded directly to the long-chain, hydrophobic hydrocarbon residue responsible for capillary activity. Such sulfobetaines can be obtained, for example, from the sultones which can be prepared from C ₈ -C ₂₀ -α-olefins with S0 ₃ and a tertiary amine with three chain aliphatic radicals obtained. Typical representatives of such surface-active betaines are, for example, the compounds 3- (N-hexadecyl-N, N-dimethylammonio) propane sulfonate; 3- (N-tallow alkyl-N, N-dimethylanmonio) -2-hydroxypropanesulfonate; 3- (N-hexadecyl-N, N-bis (2-hydroxyethyl) ammonio) -2-hydroxypropyl sulfate; 3- (N-cocoalkyl-N, N-bis (2,3-dihydroxypropyl) ammonium) propane sulfonate; N-tetradecyl-N, N-dimethylammonioacetate; N-hexadecyl-N, N-bis (2,3-dihydroxypropyl) ammonioacetate.

• a) 5 - 18 Gew.-% eines Alkylpolyglykolethers der Formel
  
  in der R¹ eine geradkettige Alkylgruppe und R² zu 20 bis 75 Gew.-% - bezogen auf den den Alkylpolyglykolether zugrunde liegenden Alkohol - eine C₁ - C₄ - Alkylgruppe und in übrigen Wasserstoff bedeuten, wobei die Gesamtzahl der Kohlenstoffatome in R¹ und R² 11 bis 15 beträgt, und n einen Wert von 5 bis 9 bedeutet, und wobei n so ausgewählt ist, daß der Ethylenoxidanteil des Alkylpolyglykolethers etwa 50 bis 65 Gew.-% beträgt,
• b) 5 - 18 Gew.-% eines Alkylpolyglykolethers der Formel I, in der R¹ eine geradkettige Alkylgruppe und R² entweder Wasserstoff, oder zu 20 bis 75 Gew.-% - bezogen auf den dem Alkylpolyglykol - ether zugrunde liegenden Alkohol - eine C₁-C₄ Alkylgruppe und im übrigen Wasserstoff bedeuten, wobei die Gesamtzahl der Kohlenstoffatome in R¹ und R² 6 bis 10 beträgt und n einen Wert von 3 bis 8 bedeutet, und wobei n so ausgewählt ist, daß der Ethylenoxidanteil des Alkylpolyglykolethers etwa 55 bis 70 Gew.-% beträgt.

In particular, the surfactant component of the detergent according to the invention consists of a combination of two different nonionic surfactants, as described in DE-OS 28 17 834. This particularly preferred detergent according to the invention contains, as a nonionic surfactant, a mixture of:

• a) 5 - 18 wt .-% of an alkyl polyglycol ether of the formula
  
  in which R ^{1 is} a straight - chain alkyl group and R ² is 20 to 75% by weight, based on the alcohol on which the alkyl polyglycol ether is based, a C ₁ - C ₄ alkyl group and in the rest hydrogen, the total number of carbon atoms in R ¹ and R ^{2 is} 11 to 15, and n is a value of 5 to 9, and where n is selected so that the ethylene oxide content of the alkyl polyglycol ether is about 50 to 65% by weight,
• b) 5-18% by weight of an alkyl polyglycol ether of the formula I in which R ^{1 is} a straight-chain alkyl group and R ^{2 is} either hydrogen or 20 to 75% by weight, based on that of the alkyl polyglycol alcohol on which ether is based - is a C ₁ -C ₄ alkyl group and hydrogen in the rest, where the total number of carbon atoms in R ¹ and R ^{2 is} 6 to 10 and n is a value from 3 to 8, and where n is selected that the ethylene oxide content of the alkyl polyglycol ether is about 55 to 70% by weight.

The quantitative ratio of a): b) is preferably 2: 1 to 1: 2.

The alkyl polyglycol ethers of the formula I which are suitable as component a) are derived from alcohols which are prepared by reacting linear olefins with carbon monoxide and hydrogen by the known oxo process by hydroformylation and subsequent hydrogenation. Commercially available oxo alcohol mixtures which are suitable for the preparation of the surfactant component a) are, for example, the oxo alcohols available from Deutsche under the trade name "Dobanol". Shell Chemie Gesellschaft, which have about 25 wt .-% of 2-alkyl branches, other suitable oxo-alcohols are among the. Name "Synprol" of Inperial Chemical Industries Ltd. available alcohol mixtures with about 50 to 70 wt .-% 2-alkyl branching. Other suitable products based on oxo alcohols are e.g. Various "Lutensol" types from BASF with approx. 30 to 35% by weight of branched alcohols and some "Lial" types from Liquichimica S.p.A. with about 60 wt .-% branched alcohols.

As component a), particular preference is given to alkyl polyglycol ethers which represent ethylene oxide condensates of the aforementioned oxo alcohols with 13 to 15 carbon atoms and an average ethylene oxide content of approximately 55 to 65% by weight. Typical preferred products are, for example, "Dobanol 45-7", which consists of at least 95% C ₁₄ / C ₁₅ oxo alcohol with an average of 7 moles of ethylene oxide, and "Lutensol AO-8", which is a C ₁₃ / C ₁₅ oxo Alcohol represents ethoxylate with an average of 8 moles of ethylene oxide.

As component b), preference is given to alkyl polyglycol ethers whose alcohol base is natural or synthetic primary fatty alcohols or oxo alcohols which contain 9 to 12 carbon atoms and have an ethylene oxide content of approximately 60 to 70% by weight. Typical preferred products are, for example, the commercial product "Marlipal KF" (Chemische Werke Huls), which is a C ₁₀ / C ₁₂ fatty alcohol ethoxylate with an average of 6 moles of ethylene oxide, and the "Lutensol ON-70", which is a C ₉ / C ₁₁ -Oxo alcohol ethoxylate with an average of 7 moles of ethylene oxide. Suitable fatty alcohols as the basis for preferred alkyl polyglycol ethers are also the commercial products "Lorol C-8 to 12" (Henkel).

The ratio of the amount of component a) used to the amount of component b) essentially determines the parameters of washing power, foaming behavior and softening effect. Optimal results are obtained when the ratio of a): b) is between about 2: 1 and 1: 2.

In general, amounts of component a) and component b) of 10 to 30% by weight, based on the total weight of the detergent, are used, an amount of 15 to 30% by weight being preferred.

Pasty and in particular liquid detergents containing the discoloration-inhibiting polymers described are particularly preferred. Water is preferably used as the solvent for the preferred liquid detergents. However, organic solvents can also be used in amounts of up to 20, preferably up to 16% by weight of the total liquid detergent. Such additional solvents are either lower alkanols or lower diols or polyols such as ethanol, isopropyl alcohol, ethylene glycol, propylene glycol or glycerin. Optionally, polyols with ether linkages such as methyl, ethyl, butyl or diethylene glycol or their acetates (for example products of the "Cellosolve" type from Union Carbide Corp.) can also be used.

To improve the solubility of the surfactants, it is often expedient to use solubilizers, so-called hydrotropes, in addition to or instead of the organic solvents mentioned above. The preferred hydrotropes are non-surfactant organic sulfonates, such as C ₆ -C ₁₂ alkanesulfonates, and the salts of toluene, xylene and cumene sulfonic acid, preferably their alkanolamine and alkali salts, especially their potassium salts. Urea is also suitable as a hydrotrope. Hydrotropes are added in amounts of 2 to 12, preferably 3 to 9% by weight, based on the total liquid detergent.

To improve certain properties, further auxiliaries, which are likewise usually effective in small amounts, can be added to the detergents according to the invention; These are, for example, opacifiers and viscosity regulators, which are usually contained in the detergent at about 0.05 to 2% by weight. These are, for example, esters of alkanols or partial esters of polyols with longer-chain fatty acids, such as palmitic or stearic acid. A typical product is ethylene glycol stearate.

Formalin is usually used as a preservative in an amount of 0.05 to 1% by weight.

In order to avoid discoloration of the detergents during prolonged storage, which can be caused by contamination with heavy metal ions during manufacture, for example, complexing agents for heavy metal ions are added. Common complexing agents are the sodium, potassium or triethanolamine salts of aminopolycarboxylic acids, such as, for example, ethylenediaminetetraacetic acid or nitrilostriacetic acid. They are used in amounts of 0.1 to 1% by weight.

Examples of suitable fragrances are substances with a floral / fresh or fruity fragrance or those designated as cosmetic or creamy.

• a) 7,5 - 12,5 Gew.-% eines Alkylpolyglykolethers der Formel I, in der R¹ und R² zusammen 11 bis 13 Kohlenstoffatome aufweisen und wobei der durchschnittliche Ethylenoxidgehalt des Alkylpolyglykolethers 55 bis 65 Gew.-% beträgt;
• b) 7,5 - 12,5 Gew.-% eines Alkylpolyglykolethers der Formel I, in der R¹ 7 bis 10 Kohlenstoffatome aufweist, R² = H ist und wobei der durchschnittliche Ethylenoxidgehalt des Alkylpolyglykolethers 60 bis 70 Gew.-% beträgt;
• c) 0,2 - 2,0 Gew.-% wasserlösliche synthetische Polymere aus der Gruppe Polyethyleninine und Polyamine
• d) 2,5 - 4,0 Gew.-% sonstige wasserlösliche Polymere
  • Rest Wasser und organische Lösungsmittel sowie gegebenenfalls weitere übliche, in geringen Mengen anwesende Zusätze, wie zum Beispiel Farb- und Duftstoffe, hydrotrope Mittel, Komplexierungsmittel für Schwermetallspuren sowie Konservierungsmittel, Trübungs- und Viskositätsstellmittel

An agent which is particularly preferred with regard to balanced product properties has the following composition:

• a) 7.5 to 12.5% by weight of an alkylpolyglycol ether of the formula I in which R ¹ and R ² together have 11 to 13 carbon atoms and the average ethylene oxide content of the alkylpolyglycol ether is 55 to 65% by weight;
• b) 7.5-12.5% by weight of an alkylpolyglycol ether of the formula I in which R ^{1 has} 7 to 10 carbon atoms, R ² = H and the average ethylene oxide content of the alkylpolyglycol ether is 60 to 70% by weight;
• c) 0.2-2.0% by weight of water-soluble synthetic polymers from the group of polyethyleneinins and polyamines
• d) 2.5-4.0% by weight of other water-soluble polymers
  • Remainder water and organic solvents as well as, where appropriate, other customary additives present in small amounts, such as, for example, colorants and fragrances, hydrotropic agents, complexing agents for traces of heavy metals, and preservatives, opacifiers and viscosity regulators

Examples Examples 1 to 6

• 11,0 Gew.-% C₁₄/C₁₅-0xo-Alkohol-Ethoxylat mit durchschnittlich 58 Gew.-% Ethylenoxid ("Dobanol 45-7", Shell);
• 11,0 Gew.-% C₁₀/C₁₂-Fettalkohol-Ethoxylat mit durchschnittlich 60 Gew.-% Ethylenoxid ("Marlipal KF", Chemische Werke Hüls):
• 7,0 Gew.-% Ethanol/1,2-Propylenglykol;

wasserlösliche, synthetische amino- und/oder amidogruppenhaltige Polymere aus der Gruppe Polyethylenimine, Polyamine, Polyaminamide, Polyacrylamide;
gegebenenfalls sonstige wasserlösliche Polymere;A liquid detergent of the following composition was used for the following examples of the invention:

• 11.0% by weight of C ₁₄ / C ₁₅ -oxy alcohol ethoxylate with an average of 58% by weight of ethylene oxide ("Dobanol 45-7", Shell);
• 11.0% by weight of C ₁₀ / C ₁₂ fatty alcohol ethoxylate with an average of 60% by weight of ethylene oxide ("Marlipal KF", Chemische Werke Hüls):
• 7.0% by weight ethanol / 1,2-propylene glycol;

water-soluble, synthetic amino and / or amido group-containing polymers from the group polyethyleneimines, polyamines, polyaminamides, polyacrylamides;
optionally other water-soluble polymers;

Balance water, small amounts of preservative, dye, fragrance.

The detergents contained the following substances in the stated amounts as water-soluble polymers:

example 1

4.4% by weight of an approx. 25% aqueous solution of a polyethyleneimine which reacts strongly to moderately basic in water ("Retaminol E", BAYER AG, Leverkusen, Federal Republic of Germany)

Example 2

1.8% by weight of an approx. 25% aqueous solution of a polyethyleneimine which reacts strongly to moderately basic in water ("Retaminol E", BAYER AG, Leverkusen, Federal Republic of Germany)

0.9% by weight of a low molecular weight water-soluble melamine / formaldehyde condensation product (molar ratio 1: 3), "Melan 125", HENKEL, Düsseldorf, Federal Republic of Germany.

0.9% by weight of a water-soluble condensation product from melamine / urea / formaldehyde, "Pressal R50", HENKEL, Düsseldorf, Federal Republic of Germany.

Example 3

2.5% by weight of an approximately 25% aqueous solution of a strongly to moderately basic-reacting polyethyleneimine ("Retaminol E", BAYER AG, Leverkusen, Federal Republic of Germany).

1.3% by weight of a low molecular weight water-soluble melamine / formaldehyde condensation product (molar ratio 1: 3), "Melan 125", HENKEL, Düsseldorf, Federal Republic of Germany.

1.3% by weight of a water-soluble condensation product made from melamine / formaldehyde, "Pressal R 50" HENKEL, Düsseldorf, Federal Republic of Germany.

Example 4

1.8% by weight of an approximately 25% strength aqueous solution of a strongly basic polyamine ("Retaminol K", Bayer AG, Leverkusen, Federal Republic of Germany).

0.9% by weight of a low molecular weight water-soluble melamine / formaldehyde / condensation product (molar ratio 1: 3), "Melan 125", HENKEL, Düsseldorf, Federal Republic of Germany

0.9% by weight of a water-soluble condensation product of melamine / urea / formaldehyde, "Pressal R50", HENKEL, Düsseldorf, Federal Republic of Germany.

Example 5

2.5% by weight of an approximately 25% aqueous solution of a strongly basic polyamine ("Retaminol K", BAYER AG, Leverkusen, Federal Republic of Germany)

1.3% by weight of a low molecular weight water-soluble melamine / formaldehyde condensation product (molar ratio 1: 3), "Melan 125", HENKEL Düsseldorf, Federal Republic of Germany

1.3% by weight of a water-soluble condensation product from melamine / urea / formaldehyde, "Pressal R50", HENKEL Düsseldorf, Federal Republic of Germany.

Example 6

4.4% by weight of an approximately 25% aqueous solution of a strongly basic polyamine ("Retamiol K", BAYER AG, Leverkusen, Federal Republic of Germany).

Example 7

• 11,0 Gew.-% C₁₄/C₁₅-Oxo-Ethoxylat mit durchschnittlich 58 Gew.-% Ethylenoxid ("Dobanol 45-7", Shell);
• 11,0 Gew.-% C₁₀/C₁₂-Fettalkohol-Ethoxylat mit durchschnittlich 60 Gew.-% Ethylenoxid ("Marlipal KF", Chemische Werke, Hüls)
• 3,0 Gew.-% Dimethylditalgalkylammoniumchlorid (100 %ig), eingesetzt als 75 %ige Paste, Rest Isopropylalkohol und Wasser, (Prägagen WK", HOECHST, Frankfurt, Bundesrepublik Deutschland
• 1,2 Gew.-% Kationische Kartoffelstärkeether ("Empresol N" , Emsland Stärke GmbH, Emlichheim, Bundesrepublik Deutschland)
• 7,0 Gew.-% Ethanol/Propylenglykol-1,2

The detergent from Example 1 of patent application P 30 26.090.3 with the following composition was used as an example of a less universally applicable discoloration-inhibiting colored detergent:

• 11.0% by weight of C ₁₄ / C ₁₅ oxo-ethoxylate with an average of 58% by weight of ethylene oxide ("Dobanol 45-7", Shell);
• 11.0% by weight of C ₁₀ / C ₁₂ fatty alcohol ethoxylate with an average of 60% by weight of ethylene oxide ("Marlipal KF", Chemische Werke, Hüls)
• 3.0% by weight of dimethylditalgalkylammonium chloride (100%), used as a 75% paste, the remainder isopropyl alcohol and water, (Prägagen WK ", HOECHST, Frankfurt, Federal Republic of Germany
• 1.2% by weight of cationic potato starch ether ("Empresol N", Emsland Starch GmbH, Emlichheim, Federal Republic of Germany)
• 7.0 wt% ethanol / 1,2-propylene glycol

Balance water, small amounts of preservative, fragrance, dye

With the detergents of Examples 1 to 7, washing tests were carried out in a commercial drum washing machine at 60 ° C. White test textiles made of cotton bleaching nettle (BL), polyester / cotton 63/35 (PES / BW), a knitted cotton fabric (BW), polyurethane-elastomeric multi-knitted fabric (PU) were used at a liquor ratio of 1:20, without contamination in In the presence of a section of fabric which was colored with 3.5% of the heavily bleeding-out dye Sirius light red F 4 BL, 154%. 84 g of the detergents from Examples 1 to 7 were placed on a drum filling and after washing the reflectance values were measured using a Zeiss Elrepho RFC3-18 type filter R 460.

The result is shown in Table I.

Diesen Versuchsergebnissen kann entnommen werden, daß der stark ausblutende Farbstoff auf die Prüftextilien in deutlich geringerem Ausmaß übertragen wird als bei Verwendung eines vergleichbaren Waschmittels mit einem anderen verfärbungsinhibierenden Wirkstoff.

It can be seen from these test results that the heavily bleeding-out dye is transferred to the test textiles to a significantly lesser extent than when using a comparable detergent with another discoloration-inhibiting active ingredient.

Claims (7)

1. Discoloration-inhibiting, liquid detergent, containing nonionic or zwitterionic surfactants, characterized in that it contains the surfactants mentioned in combination with synthetic, water-soluble, amino and / or amido group-containing polymers from the group of polyethyleneimines, polyamines, polyaminamides and polyacrylamides that it contains is free of textile-softening quaternary ammonium compounds and is essentially phosphate-free. 2. Composition according to claim 1, characterized by a content of polymers from the group of polyethyleneimines and polyamines. 3. Composition according to claims 1 and 2, characterized in that the polymer content is 1 to 15 wt .-%, preferably _{5 to} 15 wt .-% based on the amount of surfactant of the agent. 4. Composition according to claims 1 to 3, characterized in that it contains additional other water-soluble polymers. 5. Composition according to claims 1 to 4, containing a) 5-18% by weight of an alkyl polyglycol ether of the formula I.

in which R ^{1 is} a straight-chain alkyl group and R ² is 20 to 75% by weight, based on the alcohol on which the alkyl polyglycol ether is based, a C ₁ -C ₄ -alkyl group and, moreover, hydrogen, the total number of carbon atoms in R ¹ and R ^{2 is} 11 to 15, and n is a value of 5 to 9, and where n is selected so that the ethylene oxide content of the alkyl polyglycol ether is about 50 to 65% by weight. b) 5-18% by weight of an alkyl polyglycol ether of the formula I in which R ^{1 is} a straight-chain alkyl group and R ^{2 is} either hydrogen or 20 to 75% by weight, based on the alcohol on which the alkyl polyglycol ether is based, a C. ₁ -C ₄ alkyl group and hydrogen mean, where the total number of carbon atoms in R ¹ and R ^{2 is} 6 to 10 and n is a value from 3 to 8, and wherein n is selected so that the ethylene oxide portion of the alkyl polyglycol ether about 55 to 70 wt .-% is
as nonionic surfactants in a quantitative ratio a): b) preferably from 2: 1 to 1: 2. 6. Liquid composition according to claims 1 to 5 containing 10 to 30 wt .-% preferably 15 to 30 wt .-% alkyl polyglycol ether of the formula I. 7. Liquid agent according to claims 1 to 6, characterized by a) 7.5 to 12.5% by weight of an alkylpolyglycol ether of the formula I in which _R ¹ and R ² together have 11 to 13 carbon atoms and the average ethylene oxide content of the alkylpolyglycol ether is 55 to 65% by weight; b) 7.5 to 12.5% by weight of an alkylpolyglycol ether of the formula I in which R ^{1 has} 7 to ₁₀ carbon atoms, R ² = H and the average ethylene oxide content of the alkylpolyglycol ether is 60 to 70% by weight ; c) 0.2-2.0% by weight of water-soluble, synthetic polymers from the group of polyethyleneimines and polyamines d) 2.5-4.0% by weight of other water-soluble polymers Remainder water and organic solvents as well as any other usual additives present in small amounts, such as colorants and fragrances, Hydrotropic agents, complexing agents for traces of heavy metals as well as preservatives, opacifiers and viscosity agents.