Process for modifying keratinous materials

Abstract

A process for modifying keratinous material is provided, which comprises treating said material with organic solutions or aqueous emulsions which contain 1. polythiols with at least two thiol groups in the molecule and having a molecular weight of 400 to 20,000 and obtained from A. polyalcohols B. alkylene oxides and/or dicarboxylic acids and C.sub.1. carboxylic acids containing thio groups, or from C.sub.2. epihalohydrins and alkali hydrogen sulphides, the polythiols containing ether and/or ester bonds, or from A.sub.1. polycarboxylic acids B.sub.1. alkylene oxides or dialcohols and C.sub.1. carboxylic acids containing thio groups, 2. nitrogen-containing condensation products of epoxides, fatty amines, dicarboxylic acids, the equivalent ratios of epoxide groups to hydrogen bound to amino nitrogen to carboxylic acid groups being 1:(0.1-1):(1-0.55), and, optionally, of aliphatic diols and/or aminoplast precondensates which contain alkyl ether groups and/or of epihalohydrins and, optionally, 3. stabilizers against the harmful action of light, and subsequently drying the treated material. The stabilizers are preferably monomeric phenols with at least one sterically hindered hydroxyl group. The finished goods withstand washing in machines showing good shrink-resist effects and retain their original dimension and shape.

Dependencies are inferred from the claim text.