Ampholytic anionic copolymers

US7829070B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Son Nguyen-Kim · Hemsbach, DE
• Klemens Mathauer · Ludwigshafen, DE
• Claudia Wood · Weinheim, DE
• Gerd Schuh · Schwegenheim, DE
• Darshan Patwardhan · Schifferstadt, DE

Key dates

• Filing date: Dec 8, 2004
• Grant date: Nov 9, 2010
• Expiry date: Jan 9, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/1802
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Ampholytic copolymers which contain a molar excess of anionogenic and/or anionic groups, polyelectrolyte complexes which contain such an ampholytic copolymer, cosmetic and pharmaceutical compositions which contain at least one such copolymer or polyelectrolyte complex and the use of these copolymers and polyelectrolyte complexes are described.