发明名称 |
PERFLUOROPOLYETHER EXTRACTION PROCESSES |
摘要 |
This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener, an extraction aid material, and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener. |
申请公布号 |
EP3092045(A1) |
申请公布日期 |
2016.11.16 |
申请号 |
EP20140830458 |
申请日期 |
2014.12.23 |
申请人 |
THE CHEMOURS COMPANY FC, LLC |
发明人 |
HUTCHENSON, KEITH, W.;LIBERT, SHARON ANN;HOWELL, JON LEE;LIANG, XIAN |
分类号 |
B01D11/04;C10M107/38;C10M175/00 |
主分类号 |
B01D11/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|