| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the performances of a polyurethane resin coating agent without using any special polyurethane resin so as to sufficiently improve adhesion to the surface of a silicone rubber molding such as the keypad of e.g., a portable phone and so as to balancedly improve softness to touch with fingers, abrasion resistance, weathering resistance, toughness, etc. <P>SOLUTION: The polyurethane resin coating agent comprises (A) a polymer polyol containing the following components (A1) and (A2), (B) an organic diisocyanate, and optionally (C) a chain extender, wherein the component (A1) is a polycarbonate polyol having a number-average molecular weight of 500 to 5,000, and the component (B) is an acrylic polyol having a number-average molecular weight of 5,000 to 30,000 and having 1 or 2 hydroxy groups in the molecule. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
