发明名称 |
Fabrication of microporous PBI membranes with narrow pore size distribution |
摘要 |
A microporous polybenzimidazole membrane having a uniform pore structure and a narrow pore size distribution, and a process for making the membrane. The process requires coating a polybenzimidazole powder with a high temperature stable polymer and compression molding the coated particles at a temperature in the approximate range of 435 DEG -450 DEG C. to form a sheet or membrane. The polymer is then extracted from the sheet, leaving a fine, uniform, polybenzimidazole microporous structure.
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申请公布号 |
US5091087(A) |
申请公布日期 |
1992.02.25 |
申请号 |
US19900543920 |
申请日期 |
1990.06.25 |
申请人 |
HOECHST CELANESE CORP. |
发明人 |
CALUNDANN, GORDON W.;CHUNG, TAI-SHUNG |
分类号 |
B01D67/00;B01D71/62;C08J9/26;H01M2/16 |
主分类号 |
B01D67/00 |
代理机构 |
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代理人 |
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地址 |
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