| 摘要 |
<p>This invention provides a composition for making thermoplastic polyurethanes, comprising as initial components: (a) from 1 to 80 % by weight of a polydiene diol having from 1.6 to 2 terminal hydroxyl groups per molecule and a number average molecular weight in the range from 500 to 20,000; (b) from 20 to 99 % by weight of a hard segment providing combination comprising an isocyanate having two isocyanate groups per molecule and, as a chain extender, a dimer diol; a process for preparing a thermoplastic polyurethane composition and thermoplastic polyurethane composition resulting therefrom.</p> |
