Epoxy resin and hybrid powder coating compositions

Details Epoxy resin and hybrid powder coating compositions Epoxy resin and hybrid powder coating compositions

C - Chemistry, Metallurgy

09

D

C09D 163/00 (2006.01) B05D 3/02 (2006.01) B05D 7/24 (2006.01) C08G 59/50 (2006.01) C08G 59/58 (2006.01) C09D 5/03 (2006.01) C09D 167/00 (2006.01)

Patent

CA 2261485

Disclosed is an epoxy resin or hybrid resin-based powder coating composition, which comprises, as a hardener, a mixture of (a) a salt of a polycarboxylic acid (other than isophthalic acid, terephthalic acid and phthalic acid) and an amine or guanidine, such as the salt between pyromellitic acid and 2-phenylimidazoline, and (b) a polycarboxylic acid, preferably selected from the group consisting of cyanuric acid, ethylenediaminetetraacetic acid, isophthalic acid, terephthalic acid, 1,2,3,4-butanetetracarboxylic acid, trimellitic acid and trimesic acid. The coating composition is useful for producing a semi-gloss to matt coating layer.

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