| 发明名称 |
REMOVAL OF IMPURITIES FROM N-METHYL-PYRROLIDONE USED FOR LUBRICATING OIL EXTRACTION USING ACTIVATED ALUMINA |
| 摘要 |
N-methyl pyrrolidone solvent (hereinafter NMP) used to extract aromatic components from lubricating oil distillates is purified by contacting the solvent with activated alumina. |
| 申请公布号 |
CA1300163(C) |
申请公布日期 |
1992.05.05 |
| 申请号 |
CA19870538469 |
申请日期 |
1987.06.01 |
| 申请人 |
IMPERIAL OIL LIMITED |
发明人 |
KRUPAY, BORDAN W.;REID, LLOYD E. |
| 分类号 |
B01D15/00;C07D207/267;C10G21/28;C10M177/00 |
主分类号 |
B01D15/00 |
| 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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