发明名称 |
PREPARATION OF POLY(ETHER-URETHANES) FROM CYCLIC ETHERS AND ORGANIC ISOCYANATES |
摘要 |
Poly(ether-urethanes) can be made from cyclic ethers and organic isocyanates by using selected metal compounds as catalysts. Polymers useful as thermoplastic elastomers, spandex fibers or urethane rubbers can be made by reacting diisocyanates containing functinal groups with a tetrahydrofuran, especially tetrahydrofuran itself. The invention also discloses an improved process for the cationic polymerization of a cyclic ether by using an organic isocyanate.
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申请公布号 |
WO9522572(A1) |
申请公布日期 |
1995.08.24 |
申请号 |
WO1995US01957 |
申请日期 |
1995.02.15 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DRYSDALE, NEVILLE, EVERTON |
分类号 |
C08G65/12;C08G18/00;C08G18/22;C08G18/48;C08G18/70;C08G18/71;C08G65/18;C08G65/20;C08G65/26;(IPC1-7):C08G65/10 |
主分类号 |
C08G65/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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