Patent GB-450467-A (GB)
Title: The manufacture of condensation products of totally hydrolised protein material
Filed: 1935-01-17
Abstract: Condensation products for the treatment of textiles, leather &c. are prepared from mixtures of simple aminocarboxylic acids, aminodicarboxylic acids, basic aminocarboxylic acids and their substitution products, such as are obtained in the total hydrolysis of protein materials, by causing such mixtures to react with a derivative of a carboxylic acid, an organic sulphonic acid, a carbonic acid ester or a substituted carbamic acid.  The mixtures constituting the starting materials may be obtained by heating with water or aqueous acids or alkalies, animal or vegetable materials such as albumin, glutin, yeast, soya bean flour, wastes from tanneries and slaughterhouses, waste leather, horn, hair and wool. Suitable derivatives of acids are the chlorides of propionic, valeric, saturated or unsaturated or chlorinated higher fatty acids, naphthenic acids, resin acids, cyclohexane or carboxylic acid and its homologues &c., dichlorbenzoic acid, naphthoic acid, tetrahydronaphthalene carboxylic acid, butyl sulphonic acid, aliphatic sulphonic acid, dichlorbenzyl sulphonic acid, di-isobutyl-naphthalene sulphonic acid and xylene sulphonic acids; in the case of halogen substitution products it is preferred to conduct the condensation in the presence of acid-binding agents such as pyridine or aqueous p  alkali.  Suitable carbonic acid esters are the chlorocarbonic acid esters of butyl-ethyl and high molecular aliphatic and cyclic alcohols.  Suitable carbamic acid derivatives are aliphatic and aromatic isocyanates, and the urea chlorides of dibutylamine, dicyclohexylamine and methyl heptadecylamine.  In examples, chrome leather waste is decomposed by heating under pressure with milk of lime and the mixture of calcium salts of the resulting aminocarboxylic acid mixture decomposed with sodium carbonate, after filtration oleic chloride or the chlorides of bean oil or coconut fatty acids together with sodium hydroxide solution are added slowly to the filtrate to give on heating a product forming strongly foaming clear solutions having good wetting, washing, dispersing and equalizing power; stearic chloride may be similarly employed, to give a product suitable as a softener for cellulose or regenerated cellulose; waste sheet glue is decomposed by heating under pressure with sodium hydroxide solution, and to the separated solution there is added naphthenic chloride and such a quantity of sodium hydroxide necessary to keep the mixture weakly alkaline, to give on heating a product forming strongly forming solutions; chlorocarbonic acid esters of a mixture of alcohols obtained in the catalytic reduction of coconut oil are added slowly and with vigorous stirring to the leather decomposition mixture described in the first example, the mixture being maintained alkaline by sodium hydroxide solution, to give on heating a product having good wetting, washing, dispersing and equalizing power, a product of similar properties is obtained by using the urea chloride obtained from dodecylmethylamine and phosgene in place of the chlorocarbonic acid esters.  The condensation products are generally suitable as substitutes for or admixture with soaps, and for washing, bucking, bleaching, &c., for dyeing with vat, sulphur and azo dyestuffs, for after-treating and stuffing dyed materials, for the preparation of emulsions of fats, oils, fatty acids, waxes and paraffin, for sizing, softening and finishing processes, and for pasting or dissolving dyes or dye intermediates.  Examples illustrate the dyeing of cotton yarn in a vat of Indanthrene blue green FFB, and the washing of cotton warps in a bath of sodium carbonate and soap.  Specifications 360,982, 388,877 and 390,166 are referred to.ALSO:As agents for use in the emulsification of fats, oils, fatty acids, waxes and paraffin, there are used the condensation products obtained by reacting a derivative of a carboxylic acid, an organic sulphonic acid, a carbonic acid ester or a substituted carbamic acid with mixtures of simple aminocarboxylic acids, aminodicarboxylic acids, basic aminocarboxylic acids and their substitution products, such as are obtained in the total hydrolysis of protein materials.