| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyurethane foam which is excellent in cushioning characteristics and non-yellowing characteristics, and is also low in hue change even when the foam is subject to heat and ultraviolet rays and has excellent impact resilience retention, and to provide a polyisocyanate for polyurethane foam used for the manufacture of the polyurethane foam. SOLUTION: The polyurethane foam is manufactured from a raw material comprising a polyisocyanate including bis(isocyanatomethyl)cyclohexane which contains hydrolysable chlorine by 700 ppm or less; a polyol; a foaming agent; and a catalyst. COPYRIGHT: (C)2009,JPO&INPIT |
