Patent ID: 6376607
Filing Date: 2002-04-23
Classification: C08G,C08L,C09D,Y10S

Abstract:
In a powder coating composition comprising a solid particulate film-forming mixture of a polymer containing reactive functional groups and a curing agent having functional groups reactive with the functional groups of the polymer wherein the improvement comprises an organic polysiloxane having reactive functional groups, said polysiloxane having the following general formula: where m is at least 1; mâ€² is 0 to 50; n is 0 to 50; the R groups are monovalent hydrocarbon groups connected to the silicon atoms; Ra has the following structure:R1â€”Oâ€”X wherein R1 is alkylene, oxyalkylene or alkylene aryl; and X is a moiety containing at least one reactive functional group selected from the group consisting of OH, NCO, carboxylate, primary amine, secondary amine, amide, carbamate, thiol and epoxy functional groups.