Use of copolymers of monoethylenically unsaturated carboxylic acids as solubilizers

US6331294A · kind A · utility

Assignee

• BASF SE

Inventors

• Helmut Meffert · Mannheim, DE
• Axel Sanner · Bischofswerda, DE
• Gunther Berndl · Herxheim, DE
• Folker Ruchatz · Neustadt, DE
• Karl Kolter · Ludwigshafen am Rhein, DE
• Kurt Bauer

Key dates

• Filing date: Mar 17, 1999
• Grant date: Dec 18, 2001
• Expiry date: Mar 17, 2019

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K9/4866
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to the use of copolymers comprising PA1 a) 82 to 99.9 mol % of at least one monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acid; PA1 b) 0.1 to 18 mol % of at least one monomer selected from the group PA2 b.sub.1) N--C.sub.8 -C.sub.30 -alkyl-substituted amides of monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acids, PA2 b.sub.2) N,N--C.sub.8 -C.sub.30 -dialkyl-substituted amides of monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acids, PA2 b.sub.3) C.sub.8 -C.sub.30 -alkyl esters of monoethylenically unsaturated C.sub.3 -C.sub.8 -carboxylic acids; PA1 c) 0 to 17.9 mol % of at least one monomer selected from the group of PA2 c.sub.1) vinyl esters of aliphatic C.sub.8 -C.sub.30 -carboxylic acids, PA2 c.sub.2) C.sub.8 -C.sub.30 -alkylvinyl ethers, mol % data for the individual components adding up to 100%, as solubilizer.