Preparation of carboxylates of hydroxyl-containing polymers

US4778847A · kind A · utility

Assignee

• BASF SE

Inventors

• Gunnar Schornick · Neuleiningen, DE
• Gunther Schulz · Bad Dürkheim, DE
• Walter Mann · Bischofswerda, DE

Key dates

• Filing date: Sep 24, 1986
• Grant date: Oct 18, 1988
• Expiry date: Sep 24, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Carboxylates of hydroxyl-containing polymers are prepared by reacting a finely dispersed hydroxyl-containing polymer with a carboxylic anhydride in the heterogeneous phase in the presence of a tertiary amine as a catalyst by a method in which an N-alkylimidazole, where alkyl is of 1 to 10 carbon atoms, is used as the catalyst.