Method of purifying ionic liquids
US8333809B2 · kind B2 · utility
1Cited by
0References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2007 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | May 22, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D9/005
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for the purification of an ionic liquid by means of fractional crystallization in which a part of the ionic liquid is crystallized and the crystallizate formed is separated from the liquid remainder. In this respect the ionic liquid is charged with a certain amount of at least one entrainer substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.