High solid epoxy, melamine and isocyanate compositions

Details High solid epoxy, melamine and isocyanate compositions High solid epoxy, melamine and isocyanate compositions

C - Chemistry, Metallurgy

08

G

C08G 18/44 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08G 18/58 (2006.01) C08G 18/62 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C09D 163/00 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2361302

A low VOC clear coat composition which comprises an epoxy compound, a melamine component and an aliphatic polyisocyanate having an average of 2 to 6 isocyanate functionalities, and optionally contains a catalyst (e.g., organotin catalysts, acid catalysts and combinations); a polyhydroxyl functional compound (e.g., polycarbonate polyol); or other additives (e.g., light absorbers and light stabilizers). Also disclosed is an article coated with the clear coat composition, a process of making the composition, and a process of applying the composition to, for example, an automobile body.

L'invention concerne une composition de revêtement incolore à faible teneur en composants organiques volatiles (VOC), comprenant un composant d'époxy, un composant de mélamine, et un polyisocyanate aliphatique possédant en moyenne 2 à 6 fonctionnalités isocyanate, et contenant éventuellement un catalyseur (par exemple, des catalyseurs d'organotine, des catalyseurs acides et des combinaisons); un composé fonctionnel pollyhydroxyle (par exemple, un polycarbonate polyol); ou d'autres additifs (par exemple des absorbants de lumière et des stabilisateurs de lumière). L'invention concerne également un article recouvert dudit revêtement incolore, un procédé de préparation de ladite composition, et un procédé d'application de cette composition, par exemple, sur un corps d'automobile.

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