Method of cosmetic water-dispersible polyurethanes or water-soluble and can be used as auxiliaries for formulation of the drug, and the polyurethane containing in copolymerized polylactic acid polyols

摘要

The use of water-soluble or water-dispersible polyurethanes of a) at least one compound containing two or more active hydrogen atoms per molecule, b) at least one diol containing acid or salt groups, and c) at least one diisocyanate, with a glass transition temperature of at least 15 °C and acid numbers from 12 to 150, or the salts of these polyurethanes as auxiliary agents in cosmetic and pharmaceutical preparations and water-soluble or water-dispersible polyurethanes which (a) contain at least 5 mol% of a polycondensate of lactic acid and a polyol of general formula (IV) in which Y is a radical of a di to quadrivalent alcohol, n is 1-50 and m is 1-4.