Method of purifying neutral organophosphorus extractants
US4741857A · kind A · utility
5Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Oct 6, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/025
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for removing acidic contaminants from neutral mono and bifunctional organophosphorous extractants by contacting the extractant with a macroporous cation exchange resin in the H.sup.+ state followed by contact with a macroporous anion exchange resin in the OH.sup.- state, whereupon the resins take up the acidic contaminants from the extractant, purifying the extractant and improving its extraction capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.