| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin composition for powder coating use, free from environmental problem, producible at a low cost, having excellent weather resistance, acid resistance and appearance and useful for automobile parts, or the like by using a specific vinyl copolymer, a curing catalyst and a silane coupling agent as essential components at specific ratios. SOLUTION: The objective composition contains (A) 100 pts.wt. of a vinyl copolymer containing a silyl group of the formula (R1 is a 1-10C alkyl, a 6-10C aryl or the like; X is H, a halogen, hydroxy, an alkoxy or the like; (a) is 0-2) as a main crosslinking group and having a glass transition temperature of 40-100 deg.C and a number-average molecular weight of 2,-000-20,000, (B) 0.001-10 pts.wt. of a curing catalyst such as monobutyltin oxide and (C) 0.1-10 pts.wt. of a silane coupling agent such as 3-glycidoxypropyl trimethoxysilane as essential components. The component A can be produced by the copolymerization of a mixture of 3-(meth) acryloxypropyl trimethoxysilane, or the like. |
