| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous liquid dispersion constructing a water-based undercoating agent showing excellence in adhesion between a base material and a coated film and blocking resistance. <P>SOLUTION: The aqueous liquid dispersion of a polyurethane-vinyl polymer composite resin is made by dispersing polyurethane (A) and a vinyl polymer (B) in an aqueous medium wherein a diol component of the component (A) has a predetermined structural formula and contains a polycarbonate diol having a number average molecular weight of 500 to 5,000, the content of the polycarbonate diol having a hexamethylene unit as a connection group R being not less than 40 mol% of the whole diol components; and the component (B) has a glass transition temperature (Tg) of not lower than 20°C to not higher than 80°C, and the content of the component (B) is not less than 20 pts.wt. to not more than 400 pts.wt. based on 100 pts.wt. of the component (A). <P>COPYRIGHT: (C)2010,JPO&INPIT |
