发明授权
- 专利标题: Method for reducing oligomeric cyclic ether content of a polymerizate
- 专利标题(中): 降低聚合物的低聚环醚含量的方法
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申请号: US970733申请日: 1978-12-21
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公开(公告)号: US4192943A公开(公告)日: 1980-03-11
- 发明人: Ivan M. Robinson
- 申请人: Ivan M. Robinson
- 申请人地址: DE Wilmington
- 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: DE Wilmington
- 主分类号: C08G65/20
- IPC分类号: C08G65/20 ; C08G65/30
摘要:
The oligomeric cyclic ether content of a tetrahydrofuran/alkylene oxide polymerizate is significantly reduced by bringing the polymerizate into contact with an acid-activated sodium or calcium montmorillonite clay.
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