FI57611B - TVAETTPULVER ELLER VETSKA - Google Patents

Description

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Patent- oeh registerttyrelsan 'AnaSkan uthgd och utUkrtftM pubUcarad 30.0 5.80 (32) (33) (31) Pyy »* · * / etuelkeu * —toflrd prlorltat 12.07.72

England-England (GB) 32651/72 Proven-Styrkt (71) Unilever N.V., Burgemeester s'Jacobplein 1, Rotterdam, Netherlands-Holland (NL) (72) Geoffrey Bevan, Wirral, Cheshire, Peter Carter, Wirral, Cheshire,

The present invention relates to a washing powder or liquid which removes stains from polyamide fibers and which contains 0.1 to 5 parts by weight of a condensation product, the components of which are a) an aliphatic dicarboxylic acid, or an ester or amide-forming derivative thereof, b) a hydroxy-polyoxyalkylene compound containing at least one polyoxyalkylene chain having several interconnected oxyalkylene groups, or an ester- or amide-forming derivative thereof, and c) a derivative thereof, which is i) an aliphatic or cycloaliphatic amino acid or lactam ii) an aliphatic or cycloaliphatic diamine or a salt thereof with an aliphatic dicarboxylic acid, iii) a mixture of an amino acid or lactam and a diamine compound or a salt thereof, or iv) in i), ii) or iii) an ester or amide-forming derivative of said compounds.

It is known that the removal of oil stains from their surface is a particular problem in products or fabrics made from synthetic materials. Polyamide materials, such as those sold under the trade name nylon, have this problem, the solution to which is hereinafter referred to as stain removal.

Condensation products of dicarboxylic acids, polyoxyethylene glycols and cycloaliphatic lactam or sub-2,57611 phosphatic diaraine or their salts and certain condensation products of dicarboxylic acid are described in British Patent Specification 1.12 ^. 271 », which is incorporated herein by reference and is incorporated herein by reference. Salts of hexamethenediaraine and adipic acid in a molar ratio of 1: 1 (hereinafter referred to as the "nylon salt") are exemplified as salts that can be used in these condensation products. The inventors have found that these polymers can be used in conjunction with certain cleaning agents to provide very good stain removal properties to polyamide products. These condensation products are obtained by reacting together a) an aliphatic dicarboxylic acid, b) a hydroxypolyoxyalkylene compound containing at least one polyoxyalkylene chain comprising a plurality of oxyalkylene groups directly linked to each other, and c) a compound selected from aliphatic or cycloaliphatic or cycloaliphatic or cycloaliphatic diamines or their salts with dicarboxylic acid a) and mixtures of said amino acids or lactams and said diamines or their salts or by reacting together esters or amide-forming derivatives of the reactants a), b) and c).

When polyamide-containing fabrics or preparations are washed with solutions containing the compositions of the invention, the fabrics are modified so that the oil-stained stains formed thereon can be more easily removed in the wash. According to the invention, there are provided washing powders and liquids which are used to form a washing solution as well as a washing solution prepared in situ by separately adding two necessary ingredients together.

The washing powder or liquid of the invention is characterized in that the mixture contains 0.5 to 20% by weight of a detergent active substance which is a) ethoxylated alkylphenol, the total alkyl groups of which contain 6 to 12 carbon atoms and in which the molar ratios of ethylene oxide to alkylphenol are 6: 1 25: 1, or b) ethylene oxide and i) a straight or branched aliphatic unsaturated C 1-4 alcohol, or ii) a straight or branched aliphatic, saturated or unsaturated alcohol containing from 10 to 16 carbon atoms, or iii) a branched, aliphatic, unsaturated Alcohol condensation products in which the molar ratio of ethylene oxide to alcohol is 5 '1 to 30: 1.

The product of the invention can also be used in laundry processes using mixtures of polymer and a particular active detergent.

Hereinafter, ethylene oxide has also been abbreviated as EO. Suitable non-ionic active ingredients are: nonylphenol condensed with 3,576,11-12 units of ethylene oxide, secondary alcohols condensed with 3-12 units of ethylene oxide, secondary alcohols condensed with 5-15 units of ethylene oxide and primary alcohols, condensed with 8-15 ethylene-di-units.

The detergents according to the invention may contain other active substances than previously defined. The inventors have found that relatively small amounts of anionic active ingredients, other than certain soaps, can reduce the stain removal performance provided by the agent of this invention. For example, the inventors have found that the addition of dodecylbenzenesulfonate up to 80%, preferably less than 40% (by weight of nonionic active substance) can be used and still useful technical efficiency is achieved. The addition of higher amounts of non-ionic active substances than specified cannot be tolerated. Other types of active nonionic agents, for example nonionic amphoteric agents or amphoteric ionic agents, may be present in relatively large amounts without any serious deterioration in stain removal properties. Thus, the use of a mixture of non-ionic active substances containing active substances within and outside the scope of the above-mentioned definition provides the stain removal properties according to the invention.

The detergent compositions of the invention contain other necessary optional ingredients such as soap ingredients, for example, sodium tripolyphosphate, sodium orthophosphate, sodium carbonate, salts and esters of sulfonated fatty acids, phosphorus ethanone ethanate acid salts, nitrilotriacetic acid salts, ethylenediaminetetraacetates polycarboxylates. Other cleaning agents can also be used, for example silicates, which can be soap ingredients * re-precipitation inhibitors, such as sodium carboxymethylcellulose and polyvinylpyrrolidone, fluorinating agents, antimicrobials, enzymes and bleaching agents. The solid form of the composition is not limited, and any solid forms known in the art are available, for example, pills, powders, flakes, and lozenges. The invention is also applicable to liquid compositions.

5761 1 u

In a suitable solid composition, the copolymer is blended to form organic, extrudable granules. The method used is disclosed in British Patent Publication 1,204,123.

The following are examples of the compositions of the invention. The following test method was used to determine stain removal efficiency.

test method

Approximately 8 g of fluffy polyamide fabric or light woven shirt fabric was treated by washing once in 1 liter of a washing solution containing 0.05% detergent within certain limits of surface activity and 0.10% sodium polyphosphate. Washing was performed on a Terg-O-Tometer (United States Testing Co. Ltd. of Hoboken NJ) in the absence of polymer and 0.0015% polymer for 30 minutes at 0 ° C, water hardness 24 ° H, followed by rinsing and drying .

Specimens of the treated fabric, weighing about 1 g, were stained in the usual manner with about 0.035 g of dirty tank oil. After about 15 minutes, the two stained pieces were washed together once in a Terg-O-Tometer in 1 liter of the same surfactant system as in the pretreatment for 10 minutes at 50 ° C with a water hardness of 24 ° H. This was followed by rinsing and drying. The reflection ratio of the stains was measured using an Elrepho Reflectometer.

Example 1 A tank oil stain removal test was performed on a fluffy polyamide fabric using the above procedure and a polymer prepared from 2 moles of adipic acid, 1 mole of polyoxyethylene glycol (molar weight © 2000J) and caprolactam present as 35.4% by weight of the final polymer. nonylphenol-8-E0 and 0.0015% polymer were used in the solution, and the reflectance of the specimen washed in the presence of the polymeric additive was 77%, proving excellent stain removal efficiency, while it was 23.5% in the absence of the additive.

5

Example 2 5761 1

Example 1 was repeated using a polymer containing 2 moles of adipic acid, 1 mole of polyoxyethylene glycol (mole weight 1540) "nylon salt" 10% by weight of the total reactants and caprolactar 42% by weight of the final polymer, with a reflection ratio of 78%, indicating excellent stain removal.

Example 3

Example 1 was repeated using nonylphenol-12-E0 as a detergent. The reflection ratio was 78%, while the weft ratio of the fabric washed without polymeric active substance was 36%.

Example 4

Example 2 was repeated using nonylphenol-12-E0 as a detergent. The reflection ratio was 79%,

Other examples are shown in Table I.

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Example 13 7 57611

Example 1 was repeated using sodium oleate as a detergent. The fabric was washed in the presence of a polymeric additive. The reflection ratio was 69%. When the fabric was washed without additive, the reflection ratio was 33%.

Other examples are shown in Table II.

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Example 19 9 5761 1

The contrast oil stain removal test was performed on a light woven polyamide shirt fabric using the above method and a polymer prepared by reacting 2 moles of adipic acid, 1 mole of polyoxyethylene glycol (mole weight 1000) and caprolactam present in 40% of the final polymer. Clg secondary alcohol-9-E0 was used as the detergent and the polymer was 0.003% in solution. The reflectance ratio of the fabric washed in the presence of the polymeric additive was 65.5%, indicating good stain removal performance. The reflectance of the fabric washed without additive was 42.5%.

Example 20

Example 19 was repeated using a polymer prepared by reacting 2 moles of adipic acid, 1 mole of polyoxyethylene glycol (mole weight 1540), a "nylon salt" 10% of the total weight of the reactants and caprolactam 42% of the weight of the final polymer.

The reflection ratio was found to be 80%, which proves an excellent stain removal performance compared to a reflection ratio of 42.5% of a fabric washed without a polymeric additive.

Other examples are shown in Table III.

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The following non-ionic active substances do not fall into the defined category

Reflection ratio%

With polymer Without polymer Cured tallow fatty acid-5-E0 32 26.5

Hardened tallow fatty acid-20-E0 33 30.5

Hardened tallow alcohol-10-E0 34 26

Cured tallow alcohol-18-E0 35 26 C ^ g primary alcohol-5-E0 32 26.5 C ^ g primary alcohol-18-E0 35 28.5

Claims (3)

12 5761 1 A washing powder or liquid which removes stains from polyamide fibers and contains 0.1 to 5% by weight of a condensation product having as components a) an aliphatic dicarboxylic acid or an ester or amide-forming derivative thereof, b) a hydroxy-polyoxyalkylene compound containing at least a polyoxyalkylene chain having a plurality of interconnected oxyalkylene groups, or an ester or amide-forming derivative thereof, and c) a compound which is i) an aliphatic or cycloaliphatic amino acid or a lactam ii) an aliphatic or cycloaliphatic diamine or a salt thereof with a carboxylate iii) a mixture of an amino acid or lactam and a diamine compound or a salt thereof, or iv) an ester or amide-forming derivative of the compounds mentioned in i), ii) or iii), characterized in that the mixture contains 0.5 to 20% by weight of detergent which is (a) ethoxylated alkylphenol having total alkyl groups of 6 to 12 carbon atoms and in which ethylene oxide or molar ratios of alkylphenol are 6: 1 to 25: 1, or b) ethylene oxide and i) a straight or branched aliphatic unsaturated alcohol, or ii) a straight or branched aliphatic, saturated or unsaturated alcohol containing 10 to 16 carbon atoms, or iii) condensation products of a branched aliphatic unsaturated alcohol having a molar ratio of ethylene oxide to alcohol of 5: 1 ~ 30: 1. Mixture according to Claim 1, characterized in that the condensation products of ethylene oxide and alcohol contain 5 to 20 moles of ethylene oxide per mole of alcohol. Mixture according to Claim 1, characterized in that the alcohol defined in group b) ii) contains 12 to 15 carbon atoms. Mixture according to Claim 1, characterized in that the detergent is a nonylphenol which is condensed with 3 to 12 ethylene oxide units, a C 1 -C 2 secondary alcohol condensed with 3 to 12 ethylene oxide units, a C 1 -C 12 secondary alcohol which is condensed 5 ~ 15 ethylene oxide units, or C12 ~ Cllt primary alcohol condensed with 8-15 ethylene oxide units.