| 发明名称 |
Ultrafiltration polyimide membrane and its use for recovery of dewaxing aid |
| 摘要 |
Polyimide ultrafiltration membranes made using a single solvent and containing a pore forming agent have been produced and have been found to be useful for recovering dewaxing aid used in dewaxing process.
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| 申请公布号 |
US4963303(A) |
申请公布日期 |
1990.10.16 |
| 申请号 |
US19890458880 |
申请日期 |
1989.12.29 |
| 申请人 |
EXXON RESEARCH & ENGINEERING COMPANY |
发明人 |
ANDERSON, BRYCE P. |
| 分类号 |
B01D61/14;B01D71/64;C10G73/04 |
主分类号 |
B01D61/14 |
| 代理机构 |
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代理人 |
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| 地址 |
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