Use of copolymers of monoethylenically unsaturated carboxylic acids as solubilizers

US6497867B2 · kind B2 · 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: Sep 18, 2001
• Grant date: Dec 24, 2002
• Expiry date: Sep 18, 2021

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 comprisinga) 82 to 99.9 mol % of at least one monoethylenically unsaturated C3-C8-carboxylic acid;b) 0.1 to 18 mol % of at least one monomer selected from the groupb1) N—C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids,b2) N,N—C8-C30-dialkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids,b3) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids;c) 0 to 17.9 mol % of at least one monomer selected from the group ofc1) vinyl esters of aliphatic C8-C30-carboxylic acids,c2) C8-C30-alkylvinyl ethers,the mol % data for the individual components adding up to 100%, as solubilizer.