发明公开
EP2480320A2 METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES
审中-公开
法增POLYBENZOXAZOLMEMBRANEN的选择性
- 专利标题： METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES
- 专利标题（中）： 法增POLYBENZOXAZOLMEMBRANEN的选择性
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申请号： EP10819206.3申请日： 2010-08-19
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公开(公告)号： EP2480320A2公开(公告)日： 2012-08-01
- 发明人: LIU, Chunqing , MINKOV, Raisa , TANG, Man-Wing , ZHOU, Lubo , BRICKER, Jeffery C.
- 申请人： UOP LLC
- 申请人地址： 25 East Algonquin Road P.O. Box 5017 Des Plaines, Illinois 60017-5017 US
- 专利权人： UOP LLC
- 当前专利权人： UOP LLC
- 当前专利权人地址： 25 East Algonquin Road P.O. Box 5017 Des Plaines, Illinois 60017-5017 US
- 代理机构： Hayes, Adrian Chetwynd
- 优先权： US566834 20090925
- 国际公布： WO2011037706 20110331
- 主分类号： B01D71/06
- IPC分类号： B01D71/06 ; B01D67/00 ; B01D71/64 ; C08G73/22
摘要：
The present invention discloses a novel method to improve the selectivities of polybenzoxazole (PBO) membranes prepared from aromatic polyimide membranes for gas, vapor, and liquid separations. The PBO membranes that were prepared by thermal treating aromatic polyimide membranes containing between 0.05 and 20 wt-% of a poly(styrene sulfonic acid) polymer. These polymers showed up to 95% improvement in selectivity for CO2/CH4 and H2/CH4 separations compared to PBO membranes prepared from corresponding aromatic polyimide membranes without a poly(styrene sulfonic acid) polymer.
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