| 摘要 |
PROBLEM TO BE SOLVED: To provide an active energy ray-curing type water-based resin composition having little environmental pollution, excellent in preservation stability, highly sensitive to energy rays and giving practical coating film strength in a short time. SOLUTION: The active energy ray-curing type water-based resin composition contains a water-dispersive polyurethane inner salt prepared by dispersing, in water, a reaction product obtained by reacting (a) a polyhydroxy compound having at least one optically reactive onium group bonded to a chromophore through a bonding group and≥2 hydroxy groups with (b) a polyhydroxy compound having at least one sulfonate group and≥2 hydroxy groups as essential ingredients. The active energy ray-curing type water-based resin composition also contains a water-dispersive polyurethane prepared by dispersing, in water, a reaction product obtained by reacting the compound (a), the compound (b) and a compound (c) having at least one unsaturated double bond and at least one hydroxy group as essential ingredients, and a photoinitiator. COPYRIGHT: (C)2006,JPO&NCIPI
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