Patent ID: 6348520
Filing Date: 2002-02-19
Classification: C09D,Y10S

Abstract:
A method for color matching of a thermosetting powder coating composition, the method comprising the steps of: (1) dryblending two or more kinds of starting colored thermosetting powder coating compositions of different colors having an average particle size of 20 &mgr;m or less to achieve color matching, and (2) granulating the dryblend to a particle size in the range suitable for powder coating, by (i) adding a solid binder having an average particle size of 20 &mgr;m or less and a lower melting point than the starting powder coating compositions and (ii) heating the resulting mixture to a temperature at which the binder melts but the starting powder coating compositions do not melt, the solid binder being at least one member selected from the group consisting of higher alcohols and monobasic acids.