Powder coating compositions and their use for the production...

Details Powder coating compositions and their use for the production... Powder coating compositions and their use for the production...

C - Chemistry, Metallurgy

09

D

C09D 173/02 (2006.01) C08G 59/42 (2006.01) C09D 5/03 (2006.01) C09D 125/14 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2154330

Powder coating compositions based on A) copolymers prepared from olefinically unsaturated monomers, containing epoxide and anhydride groups and having a glass transition temperature Tg of 30 to 80°C, an average molecular weight Mn of 1,000 to 6,000 and a molecular weight distribution Mw/Mn of 2.5 to 10.0, B) a hardener component selected from (i) (cyclo)aliphatic dicarboxylic acids, (ii) anhydrides of such dicarboxylic acids, (iii) polyol-modified polymeric anhydrides of such dicarboxylic acids and (iv) aliphatic hydroxycarboxylic acids and optionally C) additional crosslinking agents in the form of polyaddition products having uretidione groups, and the use of these compositions for coating heat- resistant substrates.

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