Use of N-vinyllactam-or-N-vinylamine-containing copolymers as matrix for producing solid pharmaceutical and cosmetic presentations

US6436440B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Helmut Meffert · Mannheim, DE
• Folker Ruchatz · Neustadt, DE

Key dates

• Filing date: Apr 1, 1999
• Grant date: Aug 20, 2002
• Expiry date: Apr 1, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F226/06
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The use of copolymers comprisinga) 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcaprolactam, N-vinylimidazole and methylated N-vinylimidazole or N-vinylformamide andb) 1 to 50% by weight of at least one monomer selected from the group ofb1) C14-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids;b2) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids;b3) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids;b4) vinyl esters of aliphatic C8-C30-carboxylic acids;b5) C8-C30-alkyl vinyl ethersas matrix for producing solid pharmaceutical and cosmetic presentations.