发明公开
EP0004536A1 Method for reducing the oligomeric cyclic ether content of a polymerizate
失效
一种用于降低在聚合混合物的低聚环状醚的含量的方法。
- 专利标题: Method for reducing the oligomeric cyclic ether content of a polymerizate
- 专利标题(中): 一种用于降低在聚合混合物的低聚环状醚的含量的方法。
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申请号: EP79100234.8申请日: 1979-01-29
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公开(公告)号: EP0004536A1公开(公告)日: 1979-10-17
- 发明人: Pruckmayr, Gerfried , Robinson, Ivan Maxwell
- 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; US962311 19781127
- 主分类号: C08G65/30
- IPC分类号: C08G65/30
摘要:
The oligomeric cyclic ether content of a tetrahydrofuran/ alkylene oxide polymerizate is significantly reduced by bringing the polymerizate into contact at elevated temperatures with an ion exchange resin bearing -S0 3 H groups.
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