Acrylate copolymer and process for the production thereof

US5483004A · kind A · utility

Assignee

• Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

• Peter Hoffmann · Senden, DE
• Michael Brunnemann · Munster, DE

Key dates

• Filing date: Mar 30, 1994
• Grant date: Jan 9, 1996
• Expiry date: Mar 30, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/46
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to an acrylate copolymer containing amino groups, carboxyl groups and, if appropriate, hydroxyl groups which is characterized in that it has been produced by preparing an acrylate copolymer containing amino groups and, if appropriate, carboxyl groups, by means of PA1 A) free-radical solution polymerization, using azo initiators at temperatures from 80.degree. to 150.degree. C., of PA2 a.sub.1) 1 to 20% by weight of vinylimidazole and/or dimethylaminopropylmethacrylamide, PA2 a.sub.2) 0 to 50% by weight of one or more monomers containing hydroxyl groups, PA2 a.sub.3) 0 to 50% by weight of one or more monomers containing carboxyl groups, and PA2 a.sub.4) 30 to 85% by weight of at least one further ethylenically unsaturated copolymerizable monomer, PA1 the total of the proportions by weight of the components a.sub.1 to a.sub.4 always being 100% by weight, and the proportions by weight of the components a.sub.2 and a.sub.3 not both simultaneously being zero, and PA1 B) if appropriate, reacting the acrylate copolymer obtained in stage (A) with carboxylic acid anhydrides, the quantity of carboxylic acid anhydrides employed having been selected such that the …