发明申请
- 专利标题： METHOD TO IMPROVE THE SELECTIVITY OF POLYBENZOXAZOLE MEMBRANES
- 专利标题（中）： 提高聚苯并噻唑薄膜选择性的方法
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申请号： US12566834申请日： 2009-09-25
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公开(公告)号： US20100133190A1公开(公告)日： 2010-06-03
- 发明人: Chunqing Liu , Raisa Minkov , Man-Wing Tang , Lubo Zhou , Jeffery C. Bricker
- 申请人： Chunqing Liu , Raisa Minkov , Man-Wing Tang , Lubo Zhou , Jeffery C. Bricker
- 申请人地址： US NJ Morristown
- 专利权人： UOP LLC
- 当前专利权人： UOP LLC
- 当前专利权人地址： US NJ Morristown
- 主分类号： B01D71/76
- IPC分类号： B01D71/76 ; B01D67/00 ; B01D71/06 ; B01D71/64 ; C08J5/22
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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