| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating composition which enables formation of a coating film excellent in heat resistance, weather resistance, smoothness and sharpness.SOLUTION: A coating composition contains a polyisocyanate composition obtained from (a) a polyol composition which contains an acryl polyol or a polyester polyol and has a hydroxyl value of 50-250 mgKOH/g, a glass transition point (Tg) of 0-80°C and a number average molecular weight of 500-10,000 and (b) at least 1,6-diisocyanatohexane and has a mol ratio of iminooxadiazine dione structure/isocyanurate structure of 6.0/100 to 20/100, a mol ratio of uretdione structure/isocyanurate structure of 0.1/100 to 5.0/100, measured byC-NMR, and a mol ratio (NCO/OH) of isocyanate groups in (b) to hydroxyl groups in (a) of 0.6-1.5. |
