| abstract |
A thermosetting powder coating composition comprising: n (A) a graft copolymer of n A. 10 to 40 percent of a linear polyester having a number average molecular weight of 600 to 3,000 and containing one ethylenically unsaturated double bond only at one end of the molecule, n B. 5 to 30 percent of at least one of glycidyl esters having the formula ##STR1## wherein R 1 is hydrogen or methyl, and C. 10 TO 85 PERCENT OF AT LEAST ONE OF ACRYLIC COMPOUNDS HAVING THE FORMULA OF CH 2 ═C(R 2 )COOR 3 , wherein R 2 is hydrogen or methyl and R 3 is alkyl having 1 to 14 carbon atoms, cyclohexyl or hydroxyalkyl represented by ##STR2## wherein R 4 is hydrogen, methyl or ethyl, said graft copolymer having a softening point of 70° to 110° C and a number average molecular weight of 2,000 to 30,000; and n (B) at least one of polycarboxylic acids and anhydrides thereof in an amount of 0.6 to 1.2 moles in terms of carboxyl group per mole of the glycidyl group contained in the graft copolymer. |