Abstract: A powder coating composition comprising:(i) 65% to 95% by weight of a polyester resin comprising terephthalic acid as a main acid component and having a hydroxyl number of 20 to 100 and an acid value of 1 to 20;(ii) 4% to 30% by weight of a block isocyanate; and(ii) 0.2% to 30% by weight of an acrylic resin having a hydroxyl group and/or a glycidyl group. This powder coating composition has an improved stain and solvent resistance.

Abstract: A resinous composition for a top coat comprising a polyester resin modified with a lactone, said polyester resin being characterized in that 10 to 80 mole % of acid component is an alicyclic polycarboxylic acid or anhydride thereof, and 10 to 100 mole % of the carboxyl groups capable of developing a resinous acid value is derived from a polycarboxylic acid which will show a potentiometric midpoint potential in a non-aqueous potentiometric titration, in the state being incorporated into the resin, of -350 mV or more.The coating composition based on said resinous composition is specifically useful as a top coat for automobile bodies in two-tone-color coating.