Coating compositions in powder form

Details Coating compositions in powder form Coating compositions in powder form

C - Chemistry, Metallurgy

09

D

C09D 5/03 (2006.01) B05D 7/00 (2006.01) C08G 59/42 (2006.01) C09D 133/06 (2006.01) C09D 163/10 (2006.01) C09D 167/00 (2006.01)

Patent

CA 2064290

HOECHST AKTIENGESELLSCHAFT - Werk KALLE-ALBERT 91/F 113 16 April 1991 WL-Dr.Ot.-ui ABSTRACT Coating compositions in powder form A coating composition in powder form which is composed of (A) a copolymer containing glycidyl groups, (B) an aliphatic or cycloaliphatic dibasic acid, its anhydride or a polyol-modified anhydride of a dibasic acid, (C) optionally, pigments and other additives. The copolymer (A) has a molecular weight (Mn) of 1,000-10,000 and a glass transition temperature of 30-90°C and is a mixed polymer composed of a) at least 10% by weight of glycidyl acrylate or glycidyl methacrylate, b) 5-50% by weight of tert.-butyl acrylate or tert.- butyl methacrylate, c) 20-60% by weight of one or more alkyl esters of aliphatic unsaturated monocarboxylic or dicarboxylic acids and d) 0-50% by weight of one or more other olefinically unsaturated monomers.

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