| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve physical properties of a polyurethane resin using a low-cost propylene oxide addition polymer or propylene oxide/ethylene oxide addition copolymer, while retaining the low viscosity and low crystallinity of the addition polymer. <P>SOLUTION: A polyether polyol (P) for non-foamed urethane resin production is used, wherein the polyether polyol is a propylene oxide addition polymer or propylene oxide/ethylene oxide addition copolymer and has a ratio between a weight-average molecular weight (Mw) and a number-average molecular weight (Mn), that is, a molecular weight distribution (Mw/Mn) of 1.2-3.0 as measured by gel permeation chromatography. <P>COPYRIGHT: (C)2010,JPO&INPIT |
