| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polyurethane elastomer having solvent resistance and water resistance in the polyester-based polyurethane elastomer. <P>SOLUTION: In the polyester polyol obtained by using succinic acid and/or adipic acid as a carboxylic acid component and mono- or poly-oxyalkylene glycol having number-average molecular weight of ≤400 as an alcohol component and dehydrating and condensing them with castor oil, one containing 10-60 wt.% castor oil per the resultant polyester polyol is used as the polyol component of the polyurethane elastomer. <P>COPYRIGHT: (C)2010,JPO&INPIT |
