1,3,5-tris-(2-carboxyethyl) isocyanurate crosslinking agent...

Details 1,3,5-tris-(2-carboxyethyl) isocyanurate crosslinking agent... 1,3,5-tris-(2-carboxyethyl) isocyanurate crosslinking agent...

C - Chemistry, Metallurgy

08

G

C08G 59/42 (2006.01) C08G 59/32 (2006.01) C09D 133/06 (2006.01) C09D 163/06 (2006.01)

Patent

CA 2154684

Novel curable compositions based on carboxy/epoxy chemistry and cured coatings produced thereby are provided. The curable compositions employ 1,3,5-tris-(2-carboxyethyl)isocyanurate as the polybasic carboxylic acid crosslinker. The crosslinker is combined with a polyepoxide such as those obtained by copolymerizing glycidyl methacrylate with one or more epoxy-free olefinically-unsaturated monomers. The polyepoxide typically has a molecular weight of 1,000 to 30,000, an epoxy equivalent weight of 50 to 5,000, and a glass transition temperature of 10 °C to 120 °C. A cure catalyst such as triphenyl phosphine may also be used. Heat curing the compositions of the invention produces hard films useful as chip-, scratch- and mar-resistant coatings for automotive applications and as general use coatings for industrial applications.

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