Patent ID: 6713182
Filing Date: 2004-03-30
Classification: C08K,C08L,C09D,Y10S,Y10T

Abstract:
A curable powder coating composition a solid particulate film-forming mixture of the following components:(A) a polymer containing reactive functional groups, said polymer having a glass transition temperature of at least 30Â° C.; and (B) a crosslinking agent having functional groups reactive with the functional groups of component (A), said crosslinking agent comprising the ungelled reaction product of the following reactants: (1) a polyester polyol comprising the reaction product of the following components: (a) a cycloaliphatic polyol; and (b) a cyclic polycarboxylic acid or anhydride; and (2) an aminotriazine compound having less than one non-alkylated NH bond per triazine ring, wherein (2) is present in a weight ratio excess; and wherein said crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10Â° C.