发明授权
US5670052A Separating aromatics from non-aromatics by polyimide-polyester membrane
失效
通过聚酰亚胺 - 聚酯膜将芳族化合物与非芳族化合物分离
- 专利标题： Separating aromatics from non-aromatics by polyimide-polyester membrane
- 专利标题（中）： 通过聚酰亚胺 - 聚酯膜将芳族化合物与非芳族化合物分离
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申请号： US688321申请日： 1996-07-30
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公开(公告)号： US5670052A公开(公告)日： 1997-09-23
- 发明人: Win-Sow Winston Ho , Guido Sartori , Warren A. Thaler , David C. Dalrymple
- 申请人： Win-Sow Winston Ho , Guido Sartori , Warren A. Thaler , David C. Dalrymple
- 申请人地址： NJ Florham Park
- 专利权人： Exxon Research & Engineering Company
- 当前专利权人： Exxon Research & Engineering Company
- 当前专利权人地址： NJ Florham Park
- 主分类号： B01D61/36
- IPC分类号： B01D61/36 ; B01D71/64 ; B01D71/80 ; C08G73/16 ; C08L63/00 ; C08L79/08 ; C10G31/11 ; C08G59/22 ; C08G73/10
摘要：
A copolymer composition comprising the hard segment of a polyimide, the soft segment of an oligomeric aliphatic polyester, and a diepoxide for crosslinking and esterification. The diepoxide polyimide copolymer membranes have exhibited high selectivity and flux for separation of an aromatic/saturate mixture. These membranes have shown much better stability in soaking with an aromatic/saturate feed than the copolymer membranes without a diepoxide.
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