| 发明名称 |
PROCESS FOR IMPROVING THE PURITY OF QUATERNARY AMMONIUM HYDROXIDES BY ELECTROLYSIS |
| 摘要 |
A process for improving the purity of a composition comprising a quaternary ammonium hydroxide by electrolysis using cation selective membranes. The process is particularly suitable for improving the purity of an aqueous solution comprising tetramethylammonium hydroxide which has been used in the production of 4-aminodiphenylamine for a number of reaction cycles. |
| 申请公布号 |
CA2426734(C) |
申请公布日期 |
2009.04.07 |
| 申请号 |
CA20012426734 |
申请日期 |
2001.10.22 |
| 申请人 |
FLEXSYS B.V. |
发明人 |
KORPEL, FRED;BOERMAN, GERRIT JAN;RAINS, ROGER KERANAN;GIATTI, ANNA |
| 分类号 |
B01D61/44;B01D61/46;B01D71/32;C01B13/16;C01D1/40;C02F1/469;C07C209/84;C07C211/63;C25B3/00 |
主分类号 |
B01D61/44 |
| 代理机构 |
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