Use of selectively hydrogenated styrene/butadiene copolymers in cosmetic and pharmaceutical compositions

US5152991A · kind A · utility

Assignee

• BASF SE

Inventors

• Friedrich Vogel · Monsheim, DE
• Franz Frosch · Bad Dürkheim, DE
• Horst Westenfelder · Neustadt, DE

Key dates

• Filing date: Jun 13, 1991
• Grant date: Oct 6, 1992
• Expiry date: Jun 13, 2011

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q17/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Copolymers selectively hydrogenated on the olefinic double bond and composed of PA1 A) 50 to 65% by weight styrene, PA1 B) 35 to 50% by weight butadiene and PA1 C) 0 to 5% by weight other copolymerizable monomers are used in cosmetic and pharmaceutical compositions.