Patent ID: 8552109
Filing Date: 2013-10-08
Classification: C08G,C09D

Abstract:
1. An aqueous polyurethane resin dispersion which comprises a polyurethane resin which is obtained by reacting (A) a polyurethane prepolymer obtained by reacting (a) a polycarbonate polyol having an alicyclic structure in the main chain, (b) an acidic group-containing polyol compound and (d) a polyisocyanate, and (B) a chain-elongating agent, being dispersed in an aqueous medium, a carboxylic acid group content of (A) the polyurethane prepolymer based on a solid component of (A) the polyurethane prepolymer is 2.0 to 13.0% by weight, and the number of the hydroxyl equivalent of the mixture of (a) the polycarbonate polyol having an alicyclic structure in the main chain and (b) the acidic group-containing polyol compound is 70 to 270.