Synthetic resin powder and coating agents containing the same

US4268549A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Herbert Fink · Emmelshausen, DE
• Norbert Suetterlin
• Horst Dinklage · Weiterstadt, DE
• Willi Tilch · Reinheim, DE

Key dates

• Filing date: Jul 11, 1979
• Grant date: May 19, 1981
• Expiry date: Jul 11, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31928
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

What is disclosed is a synthetic resin powder of latex particles having an average particle size between 1 micron and 5 microns, which particles can be partially or completely loosely aggregated to form larger particles, said synthetic resin being a cross-linked copolymer of 75 to 99.5 percent by weight of a monomer mixture of methyl methacrylate and isobutyl methacrylate in a weight ratio of 1:3 to 3:1, 0.5 to 10 percent by weight of a cross-linking comonomer having at least two polymerizable double bonds, and 0 to 24.5 percent by weight of a further different ethylenically-unsaturated comonomer copolymerizable therewith, a coating agent containing a binder dissolved or dispersed therein together with such a resin powder, and a method of coating using such a coating agent to give coatings wherein the presence of the resin powder prevents blocking of the coatings without undue loss of luster therein.