| 摘要 |
Disclosed is a novel polyurethane elastomer obtained by reacting at the least a di, tri or polyisocyanate, a polycarbonate diol of a 2-alkyl-l,3-propanediol, a 2,2-dialkyl-l,3--propanediol, an alkoxylated 2-alkyl-l,3-propanediol and/or an alkoxylated 2,2-dialkyl--1,3-propanediol and/or at least one polycarbonate diol comprising units from two or more said 1,3-propanediols, and a di, tri or polyalcohol.
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