Patent GB-655541-A (GB)
Title: Improvements in or relating to softening of textiles
IPC: D06M13/432
Filed: 1946-05-02
Abstract: A softening composition for textiles comprises the condensation product of mixed aliphatic amine and aliphatic-substituted guanidine salts of N-aliphatic carbamic acids in which the aliphatic radicals contain 12-18 carbon atoms with 2-10 mols. of an alkylene oxide of 2-4 carbon atoms, in admixture with a smaller quantity of an anionic surface-active agent containing a single long aliphatic radical of at least twelve carbon atoms. The condensation product is made according to Specification 654,163.  The composition softens cotton wool, rayon, nylon, vinyl chloride-vinyl acetate copolymer, and other fibres or fabrics. The mixtures may also contain 0.1-4 per cent of a polyvalent metal salt, such as aluminium sulphate, zinc sulphate, or zirconium acetate, which is preferably used together with a water-soluble amide such as urea or thiourea.  The compositions may be applied together with starch or resin finishes, e.g. methylol melamines having 3-6 methylol groups, dimethylol urea, alkylated methylolmelamines such as tri-tetra-, penta-, or hexa-methylated methylol melamines, or dimethylated dimethylol urea, from an aqueous bath containing an acidic or acid-releasing curing agent such as diammonium hydrogen phosphate, phthalic acid, or oxalic acid.  The amines employed may be unsaturated. Alkylene oxides specified are ethylene, propylene, or butylene. Anionic surface-active agents specified are dodecyl, hexadecyl, and octadecyl sulphates, keryl benzene sulphonate, and the monoesters or mono-amides of aliphatic sulphocarboxylic acids, e.g. the monolauryl, monocetyl, monostearyl, and mono-oleyl esters of sulphosuccinic acid, used as the disodium salts, and the corresponding sulphosuccinamate disodium or diammonium salts. The impregnated cloth is heated to 200-400 DEG  F.  In an example, octadecylamine, or a mixture of hexadecylamine, octadecylamine, and unsaturated primary amines of 18 carbon atoms is dissolved in isopropyl alcohol, and reacted with carbon dioxide in presence of water, and then with cyanamide solution followed by reaction with ethylene oxide.  Various examples are given of compositions comprising the product of this example mixed with octadecyl disodium sulphosuccinamate and varying quantities of hydrochloric acid, acetic acid, alcohol, water, aluminium sulphate and urea.  Lauryl, tetradecyl and octadecyl disodium sulphosuccinamates are made from the corresponding amines and maleic anhydride, followed by neutralization with caustic soda and reaction with sodium bisulphite.  Specification 608,375, [Group IV (c)], is referred to.ALSO:A softening composition for textiles comprises the condensation product of mixed aliphatic amine and aliphatic-substituted guanidine salts of N-aliphatic carbamic acids in which the aliphatic radicals contain 12-18 carbon atoms with 2-10 mols. of an alkylene oxide of 2-4 carbon atoms, in admixture with a smaller quantity of an anionic surface-active agent containing a single long aliphatic radical of at least twelve carbon atoms. The condensation product is made according to Specification 654,163, [Group IV (b)].  The compositions soften cotton, wool, rayon, nylon, vinyl chloridevinyl acetate copolymer, and other fibres or fabrics. The mixtures may also contain 0.1 to 4 per cent of a polyvalent metal salt, such as aluminium sulphate, zinc sulphate, or zirconium acetate, which is preferably used together with a water-soluble amide such as urea or thiourea.  The compositions may be applied together with starch or resin finishes, e.g. methylol melamines having 3-6 methylol groups, dimethylol urea, alkylated methylol-melamines such as tri-, tetra-, penta-, or hexamethylated methylol melamines, or dimethylated dimethylol urea, from an aqueous bath containing an acidic or acid-releasing curing agent such as diammonium hydrogen phosphate, phthalic acid, or oxalic acid.  The amines employed may be unsaturated.  Alkylene oxides specified are ethylene, propylene, or butylene.  Anionic surface-active agents specified are dodecyl, hexadecyl, and octadecyl sulphates, keryl benzene sulphonate, and the monoesters or monoamides of aliphatic sulphocarboxylic acids, e.g. the monolauryl, monocetyl, monostearyl, and mono-oleyl esters of sulphosuccinic acid, used as p  the disodium salts, and the corresponding sulphosuccinamate disodium or diammonium salts.  The impregnated cloth is heated to 200-400 DEG  F.  In an example, octadecylamine, or a mixture of hexadecylamine, octadecylamine, and unsaturated primary amines of 18 carbon atoms is dissolved in isopropyl alcohol, and reacted with carbon dioxide in presence of water, and then with cyanamide solution followed by reaction with ethylene oxide.  Various examples are given of compositions comprising the product of this example mixed with octadecyl disodium sulphosuccinamate and varying quantities of hydrochloric acid, acetic acid, alcohol, water, aluminium sulphate, and urea.  Lauryl, tetradecyl and octadecyl disodium sulphosuccinamates are made from the corresponding amines and maleic anhydride, followed by neutralisation with caustic soda and reaction with sodium bisulphite. Specification 608,375 is referred to.