Patent ID: 9296916
Filing Date: 2016-03-29
CPC Classification: C08G,C08L,C09D

Claim Text:
1. A powder coating composition comprising: 20 to 60 parts by weight per 100 parts by weight resin of a solid composition comprising an aromatic epoxy resin, and a poly(phenylene ether) having a number average molecular weight of 600 to 2000 atomic mass units and an average of 1.5 to 3 hydroxyl groups per molecule; 40 to 80 parts by weight per 100 parts by weight resin of a thermoset resin comprising an aliphatic epoxy resin, a cycloaliphatic epoxy resin, a second aromatic epoxy resin, a cyanate ester resin, a carboxylated polyester resin, or a combination thereof, provided that the second aromatic epoxy resin is different from the aromatic epoxy resin of the solid composition; and a curing agent in an amount effective to cure the powder coating composition; wherein the solid composition comprises the aromatic epoxy resin and the poly(phenylene ether) in amounts effective to produce a single glass transition temperature in the range 40 to 92 ° C.; and wherein the solid composition exhibits no other glass transition temperature in the range -20 to 200° C.