发明名称 |
Asymmetric gas separation membrane and process for gas separation |
摘要 |
There is disclosed an asymmetric gas separation membrane exhibiting both improved gas separation performance and improved mechanical properties, which is made of a soluble aromatic polyimide comprised of a repeating unit represented by general formula (1): wherein B in general formula (1) B comprises 10 to 70 mol % of tetravalent unit B1 represented by general formula (B1) and 90 to 30 mol % of tetravalent unit B2 represented by general formula (B2), and A in general formula (1) comprises 10 to 50 mol % of bivalent unit A1 represented by general formula (A1a) or the like and 90 to 30 mol % of bivalent unit A2 represented by general formula (A2a) or the like.
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申请公布号 |
US8409325(B2) |
申请公布日期 |
2013.04.02 |
申请号 |
US200913121840 |
申请日期 |
2009.09.30 |
申请人 |
YOSHINAGA TOSHIMUNE;NAKAMURA MAKOTO;KANOUGI TOMONORI;KASE YOJI;FUKUNAGA KENJI;UBE INDUSTRIES, LTD. |
发明人 |
YOSHINAGA TOSHIMUNE;NAKAMURA MAKOTO;KANOUGI TOMONORI;KASE YOJI;FUKUNAGA KENJI |
分类号 |
B01D53/22 |
主分类号 |
B01D53/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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