| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyurethane, wherein yellowing resistance, transparency, heat resistance and weatherability are improved. <P>SOLUTION: A polyurethane composition comprises a polyol composition (1) and an isocyanate group-containing compound (2). The polyol composition (1) comprises a hydroxyl group-containing conjugated diene polymer hydride (1-i), an antioxidant (1-ii), a photostabilizer (1-iii), an ultraviolet absorber (1-iv) and a curing catalyst (1-v). <P>COPYRIGHT: (C)2012,JPO&INPIT |
