Method and solvent composition for regenerating an ion exchange resin
US6407143B1 · kind B1 · utility
10Cited by
6References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/57
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and composition for removing perchlorate from a highly selective ion exchange resin is disclosed. The disclosed approach comprises treating the resin in a solution of super critical or liquid carbon dioxide and one or more quaternary ammonium chloride surfactant compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.