| 发明名称 |
GAS SEPARATING ASYMMETRIC MEMBRANE |
| 摘要 |
A gas separating asymmetric membrane such as a gas separating asymmetric hollow fiber comprises an aromatic polyimide of which recurring unit is expressed by the formula (I): (see Formula I) wherein A1 is a tetravalent unit at least 40 molar % of which has a diphenylhexafluoropropane structure, and A2 is a divalent unit at least 35 molar % of which is a divalent unit derived from a diaminobenzothiophene or a diaminodi- phenylenesulfone.
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| 申请公布号 |
CA2038381(A1) |
申请公布日期 |
1991.09.16 |
| 申请号 |
CA19912038381 |
申请日期 |
1991.03.15 |
| 申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
KUSUKI, YOSHIHIRO;YOSHINAGA, TOSHIMUNE;HOSHINO, HARUTOSHI;ASANUMA, SHINJI |
| 分类号 |
B01D69/08;B01D71/64;B01D71/66;B01D71/68;C08G73/10;C08G75/00;D01D5/24;D01F6/00;D01F6/76;(IPC1-7):C08J9/28;B01D53/22;D01D5/06 |
主分类号 |
B01D69/08 |
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