Patent ID: 6239215
Filing Date: 2001-05-29
Classification: C09D

Abstract:
A thermosetting powder coating composition, comprising:a plurality of multilayer polymer particles, in which at least one inner-layer of said particles is a polymer layer having a glass transition temperature (Tg) of not over 20.degree. C. and in which the outermost layer of said particles is a polymer layer having a Tg of not less than 60.degree. C., wherein said at least one inner layer is formed from monomer components having at least one unsaturated double bond in the molecules, said monomer components including a crosslinking monomer and a grafting monomer used in an amount of 0.3 to 5 weight % and of 1 to 10 weight %, respectively,a base resin, anda curing agent,wherein said composition contains 1 to 30 parts by weight of said multilayer polymer particles per 100 parts by weight of the total components of said composition other than the multilayer polymer particles and is in the form of dry powder.