| 摘要 |
PROBLEM TO BE SOLVED: To provide a powdery coating composition which is excellent in impact strength, weatherability, and appearance and is favorable, in particular, for coating a vehicle. SOLUTION: This thermosetting powdery coating composition contains a resin composition (A) having a sea-island micro phase separation structure comprising a continuous phase (sea phase) containing an acrylic copolymer and a dispersed phase (island phase) containing a thermoplastic elastomer(a-2) and a curing agent (B). The thermoplastic elastomer(a-2) is a grafted thermoplastic elastomer (a-2-2a) whose main chain is a styrene thermoplastic elastomer (a-2-1a), which is a hydrogenated S-B-S ternary block copolymer comprising a hard segment S obtained by polymerizing an aromatic vinyl hydrocarbon and a soft segment B obtained by polymerizing a conjugated diene. The content of the thermoplastic elastomer(a-2) is 0.5-20 pts.wt. against 100 pts.wt. of the resin composition (A). COPYRIGHT: (C)2007,JPO&INPIT
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