Cosmetic compositions based on N-hydroxyethylchitosans, N-hydroxyethylchitosans and a process for their preparation

Abstract

Abstract The invention relates to cosmetic compositions for treating the skin or the hair which are characterised by containing N-hydroxyethylchitosan derivatives consisting of a) 4 to 40 mol per cent of monomer units of the formula (I) <IMAGE> and b) 60 to 96 mol per cent of monomer units of the formula (II) <IMAGE> in which R<1> and R<2> are identical or different and are hydrogen or the group <IMAGE> with n equal to an integer from 1 to 5, with the condition that R<1> and R<2> are not both hydrogen in at least 50 per cent of the units of (II), or the salts thereof. It also relates to N-hydroxyethylchitosan derivatives and their salts and a process for preparing these compounds from ethylene oxide and chitosan.

Inventors

• 👤 Guenther Dr Lang
• 👤 Gerhard Maresch
• 👤 Harald Wendel
• 👤 Hans-Rudi Lenz
• 👤 Eugen Konrad

Bibliographic Details