Use of copolymers of N-vinylprrolidone in preparations of water-insoluble substances

US6075107A · kind A · utility

Assignee

• BASF SE

Inventors

• Stephan Kothrade · Schifferstadt, DE
• Helmut Meffert · Mannheim, DE
• Gunther Berndl · Herxheim, DE
• Axel Sanner · Bischofswerda, DE
• Stefan Stein · Saulheim, DE
• Volker Schehlmann · Schifferstadt, DE
• Folker Ruchatz · Neustadt, DE

Key dates

• Filing date: May 7, 1998
• Grant date: Jun 13, 2000
• Expiry date: May 7, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/911
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The use of copolymers of PA0 A) 60-99 mol % of N-vinylpyrrolidone, and PA0 B) 1-40 mol % of a monomer selected from the group of PA1 b1) C.sub.8 -C.sub.30 -alkyl esters of monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acids, PA1 b2) N-alkyl- or N,N-dialkyl-substituted amides of acrylic acid or of methacrylic acid with C.sub.8 -C.sub.18 -alkyl radicals, or PA1 b3) vinyl esters of aliphatic C.sub.8 -C.sub.30 -carboxylic acids, or mixtures of these monomers, as surface-active substances in preparations of water-insoluble substances.