Copolymers, process for preparing the same and cosmetic compositions containing the same

US4324780A · kind A · utility

Assignee

• L'Oreal · FR

Inventors

• Bernard Jacquet · Antony, FR
• Claude Mahieu · Paris, FR
• Christos Papantoniou · Montmorency, FR

Key dates

• Filing date: Jun 25, 1980
• Grant date: Apr 13, 1982
• Expiry date: Jun 25, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/923
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A cosmetic composition comprises a cosmetic vehicle and from 0.5-10 percent by weight of at least one copolymer having the formula ##STR1## wherein B represents Na, K, NH.sub.4, ##STR2## or 2-amino-2-methyl propanol-1; R.sub.1 and R.sub.2 each independently represent hydrogen or --(X)--OH; X represents alkylene having 1-3 carbon atoms or alkylene substituted by at least one hydroxymethyl; M represents at least one unsaturated monomer selected from acrylamides or methacrylamides substituted on the nitrogen by alkyl, the acrylates or methacrylates of monoalkyl ether of ethylene glycol or of polyethylene glycol, and N-vinylpyrrolidone; x is 22-64 mole percent, y is 13-71 mole percent, z is 6-23 mole percent, v is 0-22 mole percent, and x+y+z+v is equal to 100 mole percent.