| 发明名称 |
Method for purification of aromatic polyethers |
| 摘要 |
Aromatic polyethers are prepared by displacement polymerization reaction in the presence of a water-immiscible solvent with density ratio to water in a range of between about 0.9:1 and about 1.1:1 measured at a temperature in a range of between about 20° C. and about 25° C. The polyethers are purified by processes comprising aqueous extraction, or filtration, or a combination thereof.
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| 申请公布号 |
US6630568(B1) |
申请公布日期 |
2003.10.07 |
| 申请号 |
US20010815583 |
申请日期 |
2001.03.23 |
| 申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
JOHNSON NORMAN ENOCH;AYALA RAUL EDUARDO;FYVE THOMAS JOSEPH;FRESHOUR AMY RENE;WOODRUFF DAVID WINFIELD;PHELPS PETER DAVID;KAILASAM GANESH |
| 分类号 |
C08G65/48;C08G73/10;C08G73/12;C08G75/23;(IPC1-7):G08F6/16 |
主分类号 |
C08G65/48 |
| 代理机构 |
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