Patent ID: 6046276
Filing Date: 2000-04-04
Classification: C08G,C08L,C09D,Y10S

Abstract:
In a powder coating composition comprising a sold particulate film-forming mixture of an acrylic polymer containing reactive COOH 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: ##STR4## where m is at least 1; m' is 0 to 50; n is 0 to 50; the R groups are monovalent hydrocarbon groups connected to the silicon atoms; R.sup.a has the following structure:R.sub.1 --O--Xwhere R.sub.1 is alkylene, oxyalkylene or alkylene aryl; and X is a moiety containing a at least one reactive COOH functional group, wherein at least a portion of X contains two or more COOH functional groups.