C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/04 (2006.01) C08F 8/08 (2006.01) C09D 5/03 (2006.01) C09D 133/06 (2006.01)
Patent
CA 2179766
The invention relates to a thermosetting powder coating material on the basis of acrylate copolymers containing epoxide groups. The materials contain the following components: (A) an epoxy groups-containing acrylate copolymer, (B) an aliphatic and/or cycloliphatic polybasic acid and/or its anhydride and/or a polyol-modified anhydride of a polybasic acid and/or amorphous or a semi-crystalline carboxyl-functional copolyester resins, (C) if required, additionally pigments and/or fillers and/or additives relating to use or processing, wherein the epoxy groups-containing acrylate copolymer has a molecular weight (Mw) of 1,000 to 30,000, a glass transition temperature of 20 to 120° and can be obtained by a method wherein in a first step a copolymer (D) containing carboxyl groups is produced, which subsequently is transformed in further steps by the conversion with epihaloalkanes into the epoxyde groups contains acrylate copolymer (A). The above-mentioned material can be further processed into powder coatings.
Gisler Rene
Kaplan Andreas
Reich Albert
Ems-Inventa Ag
Ems-Patent Ag
Robic
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