发明名称 |
Polyimide membranes for hyperfiltration recovery of aromatic solvents |
摘要 |
Improved asymmetric hyperfiltration membranes and their method of preparation and use are disclosed. The membranes are fashioned from polyimides and conditioned with a lubricating oil. Permselective separation of aromatic hydrocarbons from non-aromatic hydrocarbons in a feed stream may be accomplished using the membranes under hyperfiltration conditions.
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申请公布号 |
US6180008(B1) |
申请公布日期 |
2001.01.30 |
申请号 |
US19980126261 |
申请日期 |
1998.07.30 |
申请人 |
W. R. GRACE & CO.-CONN. |
发明人 |
WHITE LLOYD STEVEN |
分类号 |
B01D61/02;B01D67/00;B01D71/64;C08J7/00;C10G31/11;(IPC1-7):B01D29/00 |
主分类号 |
B01D61/02 |
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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