发明名称 |
Polyurethanes prepared with tetrahydrofuran-alkylene oxide polymerizates having low oligomeric cyclic ether content, processes for preparing the same, and articles and fibers of the polyurethanes. |
摘要 |
<p>The resistance to degradation on exposure to high temperatures, water and organic liquids of a polyurethane prepared by reacting a tetrahydrofuran/alkylene oxide polymerizate, an organic polyisocyanate and a chain extender is significantly improved by using a tetrahydrofuran/alkylene oxide polymerizate which contains no more than about 3% by weight, of oligomeric cyclic ethers.</p> |
申请公布号 |
EP0004356(A1) |
申请公布日期 |
1979.10.03 |
申请号 |
EP19790100809 |
申请日期 |
1979.03.16 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
PRUCKMAYR, GERFRIED;ROBINSON, IVAN MAXWELL;PECHHOLD, ENGELBERT |
分类号 |
C08G18/48;C08G65/20;C08G65/30;(IPC1-7):08G18/48;08G65/30 |
主分类号 |
C08G18/48 |
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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