| 发明名称 |
RECOVERY OF PERFLUORINATED POLYETHER OILS FROM GREASE MATRICES INCORPORATING EXTRACTION AIDS BY CARBON DIOXIDE EXTRACTION |
| 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 |
US2016319216(A1) |
申请公布日期 |
2016.11.03 |
| 申请号 |
US201415109216 |
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;KRUKONIS VAL;SCHONEMANN HANS |
| 分类号 |
C10M175/00;B01D15/12;B01D11/04 |
主分类号 |
C10M175/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process for extracting a perfluoropolyether, comprising:
(a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener, 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. |
| 地址 |
Wilmington DE US |
