| abstract |
PROBLEM TO BE SOLVED: To provide a thermosetting powder coating composition having a good appearance of a coating film and capable of improving a crosslinking density. (A) Number average molecular weight of 1,000 to 500 0, a main resin composed of an acrylic resin having an epoxy group and having a glass transition temperature (Tg) of 20 to 100 ° C; (B) a solid curing agent, and (C) a side chain containing an alkyl group and / or an alkylene unit having 4 to 20 carbon atoms, two or more carboxyl groups in one molecule, and a number average molecular weight of 1,000 to 10,000. Wherein the additive resin (C) is contained at 0.3 to 20% by weight in the solid content of the paint. |