JP2012162588A5 - - Google Patents

Claims (12)

Aliphatics obtained by reacting a polyol (A) containing an aliphatic cyclic structure-containing polyol (a1) and a hydrophilic group-containing polyol (a2), a polyisocyanate (B), and a hydroxyl group-containing vinyl monomer (C). The urethane resin (D) with respect to the total mass of the urethane resin (D), which contains a urethane resin (D) having a cyclic structure, a hydrophilic group, and a polymerizable unsaturated double bond, and an aqueous medium (E). The ratio of the aliphatic cyclic structure contained in the range of 2000 mmol / kg-5500 mmol / kg, The water-based urethane resin composition characterized by the above-mentioned. The urethane resin (D) has an aliphatic cyclic structure derived from the aliphatic cyclic structure-containing polyol (a1) from 300 mmol / kg to 2000 mmol / kg with respect to the total mass of the urethane resin (D). The aqueous urethane resin composition according to claim 1. The aqueous urethane resin composition according to claim 1, wherein the aliphatic cyclic structure-containing polyol (a1) comprises an aliphatic cyclic structure-containing polycarbonate polyol or an aliphatic cyclic structure-containing polyester polyol. The polyol (A) contains an aliphatic cyclic structure-containing polyol (a1), a hydrophilic group-containing polyol (a2), and another polyol (a3), and the other polyol (a3) is a polycarbonate. The aqueous urethane resin composition according to claim 1, which is a polyol or a polyester polyol. The water-based urethane resin composition of Claim 1 whose said urethane resin ( D ) has a weight average molecular weight of the range of 30000-200000. The aqueous urethane resin composition according to claim 1, wherein the urethane resin ( D ) has a polymerizable unsaturated double bond at a molecular end or a molecular side chain. The urethane resin ( D ) includes an aliphatic cyclic structure-containing polyol (a1) and a polyol (A) containing a hydrophilic group-containing polyol (a2), a polyisocyanate (B), a hydroxyl group-containing vinyl monomer (C), , it is obtained by reacting optionally chain extender, the aqueous urethane resin composition according to claim 1. Furthermore, the aqueous urethane resin composition of any one of Claims 1-7 containing a polymerization initiator. The coating agent containing the water-based urethane resin composition of any one of Claims 1-8. The steel plate surface treating agent containing the water-based urethane resin composition of any one of Claims 1-8. A cured product obtained by curing the aqueous urethane resin composition according to claim 8. The laminated body which the film | membrane formed using the steel plate surface treating agent of Claim 10 on the surface of the metal base material laminated | stacked.