| 摘要 |
An aqueous resin composition is provided which is characterized by containing a urethane resin, an aqueous resin, and an aqueous medium, the urethane resin having a polymerizable unsaturated group obtained by reacting polyisocyanate with polyols that contain an alkylenediol having two or more polymerizable unsaturated groups represented by general formula (1) or an oxyalkylenediol having two or more polymerizable unsaturated groups represented by general formula (2). The aqueous resin composition can form a coating film which has weatherability in addition to elongation, flexibility and hardness. (R1 in general formula (1) represents a structure having two or more atomic groups containing a polymerizable unsaturated group in the side chain of a straight chain alkylene group of 1-9 carbon atoms.) (R1 and R3 in general formula (2) represent a structure having an atomic group containing a polymerizable unsaturated group in the side chain of an ethylene group. R2 represents an alkylene group having 1 to 5 carbon atoms.) |
