Patent ID: 7955655

Claim:
A thermosetting and photocurable coating composition for automobile bodies comprising: (A) at least one compound selected from the group consisting of urethane resins containing radical-polymerizable unsaturated groups, and acrylic resins containing radical-polymerizable unsaturated groups and hydroxyl groups; (B) a hydroxyl-containing polyester resin produced by esterifying a polybasic acid (a) with a polyhydric alcohol (b), wherein an alicyclic polybasic acid (a1) and an alicyclic polyhydric alcohol (b1) are included in a total ratio of 50% to 100% based on the total weight of polybasic acid (a) and polyhydric alcohol (b), the polyhydric alcohol (b) includes 50% or more of the alicyclic polyhydric alcohol (b1) based on the weight of the polyhydric alcohol (b) the alicyclic polybasic acid (a1) is at least one compound selected from the group consisting of cyclohexane-1,3-dicarboxylic acid, cyclohexane-1,4-dicarboxylic acid, hexahydrophthalic acid, hexahydrotrimellitic acid, tetrahydrophthalic acid, methyl hexahydrophthalic acid; and anhydrides of these acids; and the alicyclic polyhydric alcohol (b1) is at least one compound selected from the group consisting of cyclohexane-1,4-dimethylol, hydrogenated bisphenol-A, spiroglycol, and dihydroxymethyltricyclodecane; (C) a crosslinking agent; and (D) a photopolymerization initiator.