Aqueous dispersions of cross-linkable copolymers based on (meth)acrylates, their preparation and use as stoving enamels

US4336172A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Klaus Marquardt · Burghausen, DE
• Herbert Eck · Burghausen, DE
• Werner Bathelt · Burghausen, DE

Key dates

• Filing date: Jun 11, 1980
• Grant date: Jun 22, 1982
• Expiry date: Jun 11, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F246/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous dispersions containing from 30% to 70% by weight of cross-linkable copolymers based on esters of (meth)acrylic acid comprising esters of (meth)acrylic acid and/or styrene, and other ethylenically-unsaturated compounds copolymerizable therewith and from 1% to 15% by weight based on the total weight of the copolymer, of allyl esters of .alpha.-hydroxycarboxylic acids. These dispersions can be used as a base of stoving enamels, which can be hardened to obtain coats of great surface hardness and great flexibility on metals.