| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a thermoplastic polyurethane having a high impact resilience coefficient and a characteristic that a decrease in the impact resilience coefficient at a lower temperature range is small, namely, a change in the impact resilience coefficient induced by outer temperature fluctuation is little. <P>SOLUTION: The thermoplastic polyurethane is formed by linear combination of a segment A comprising a high molecular weight diol, a segment B comprising at least one sort of a low molecular weight diol selected from 1,4-bis(hydroxyethoxy)benzene and 1,3-propanediol and a segment C comprising a polyisocyanate, and is characterized by containing 1-30 mass% segment B in the thermoplastic polyurethane. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
