Quaternary hydroxy-propyl-substituted chitosan derivatives, cosmetic compositions based thereon and processes for the production thereof

US4772689A · kind A · utility

Assignee

• Wella GmbH · DE

Inventors

• Gunther Lang · Reinheim, DE
• Harald Wendel · Ober-Ramstadt, DE
• Eugen Konrad · Darmstadt, DE

Key dates

• Filing date: Jan 14, 1986
• Grant date: Sep 20, 1988
• Expiry date: Jan 14, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S424/02
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Cosmetic compositions are disclosed for the treatment of hair or skin, characterized by a content of new quaternary chitosan derivatives of the formula EQU HO[C.sub.6 H.sub.11-m NO.sub.4 (R.sup.1).sub.m (R.sub.2).sub.n (R.sup.3).sub.q ].sub.p H (1) EQU (m=0-0.5; n=0.01-6; q=0.005-3; p=10-50,000 ##STR1## Also disclosed are the new quaternary chitosan derivatives per se as well as processes for their preparation. The chitosan derivatives have a good substantivity, particularly to hair keratin, and prove to have hair strengthening and hair conditioning characteristics.