Thermosetting coating composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 135/00 (2006.01) C09D 133/06 (2006.01) C09D 133/14 (2006.01) C08L 33/06 (2006.01)

Patent

CA 2228628

A thermosetting coating composition comprising an acrylic copolymer (A) containing vinyl monomer units each having an .alpha.,.beta.-dicarboxylic acid anhydride group and vinyl monomer units each having an .alpha.,.beta.-dicarboxylic monoester group in a total amount of 5-40 wt% and containing the vinyl monomer units with .alpha.,.beta.-dicarboxylic acid anhydride groups at 0.3-5 wt%, and an acrylic copolymer (B) with epoxy groups.

Cette invention concerne une composition de revêtement durcissable à chaud, laquelle comprend un copolymère acrylique (A) contenant des unités de monomère de vinyle ayant chacune un groupe anhydride d'acide alpha , beta -dicarboxylique, ainsi que des unités de monomère de vinyle ayant chacune un groupe monoester dicarboxylique, le contenu total des deux unités monomères variant de 5 à 40 % en poids, tandis que le contenu des anciennes unités monomères varie de 0,3 à 5 % en poids. Cette composition comprend également un copolymère acrylique époxydé (B).

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