Patent ID: 6372876
Filing Date: 2002-04-16
Classification: A61K,A61Q,C08G,C09J,Y10S

Abstract:
A method for treating hair, comprising applying to hair a polyurethane which is soluble or dispersible in water and is composed ofa) at least one compound which contains two or more active hydrogens per molecule, b) at least one diol containing acid groups or salt groups and c) at least one diisocyanate with a glass transition temperature of at least 150Â° C. and acid numbers of from 12 to 150 or the salts of these polyurethanes, wherein at least 20 mol % of poly(&agr;-hyroxy carboxylic acid diols) of the formula I whereR1 and R2 are each H, C1-C5-alkyl or aryl R is a radical derived from a diol (alkylene radical) with 2-8 carbons, n and m are each 1-30, are used as compounds in group (a).