发明公开
- 专利标题： 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
- 专利标题（中）： 由此用四氢呋喃 - 环氧烷烃聚合物制备的聚氨酯，它们的制备方法和以制品和纤维。
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申请号： EP79100809.7申请日： 1979-03-16
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公开(公告)号： EP0004356A1公开(公告)日： 1979-10-03
- 发明人: Pruckmayr, Gerfried , Robinson, Ivan Maxwell , Pechhold, Engelbert
- 申请人： E.I. DU PONT DE NEMOURS AND COMPANY
- 申请人地址： 1007 Market Street Wilmington Delaware 19898 US
- 专利权人： E.I. DU PONT DE NEMOURS AND COMPANY
- 当前专利权人： E.I. DU PONT DE NEMOURS AND COMPANY
- 当前专利权人地址： 1007 Market Street Wilmington Delaware 19898 US
- 代理机构： Abitz, Walter, Dr.-Ing.
- 优先权： US887332 19780316; US887333 19780316; US915190 19780613; US915191 19780613; US962311 19781127; US966602 19781211; US967082 19781212; US970733 19781221
- 主分类号： C08G18/48
- IPC分类号： C08G18/48 ; C08G65/30 ; D01F6/70
摘要：
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.
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