| 摘要 |
<p>Provided are: an aqueous polyurethane resin dispersion that exhibits good storage stability, and after being cured by actinic radiation (such as UV radiation) and formed into a coating, adheres well to various plastics (ABS resins, acrylic resins, polycarbonate resins); and an aqueous polyurethane resin dispersion that yields a high-hardness coating. The present invention pertains to an aqueous polyurethane resin dispersion that comprises at least the following dispersed in an aqueous medium: a polyurethane resin (A) that has polymerizable unsaturated bonds; and a compound (B) that has polymerizable unsaturated bonds. Said polyurethane resin (A) that has polymerizable unsaturated bonds comprises: a polycarbonate diol (a) that has an alicyclic structure in the main chain thereof; an acid-group-containing polyol (b); a polyisocyanate (d); and a compound (e), each molecule of which has at least one group that can react with an isocyanate group and at least one polymerizable unsaturated bond. The present invention also pertains to a paint composition and coating composition that contain the abovementioned aqueous polyurethane resin dispersion and a manufacturing method therefor.</p> |
