Purification process
US5500127A · kind A · utility
30Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Mar 14, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J39/07
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the purification of an organic solution containing an acid labile material. The process comprises contact of the organic solution with a combination of a cation exchange resin and an anion exchange resin. The cation exchange resin has weak acidic groups to reduce attack on the acid labile material within the organic solution. The anion exchange resin preferably has hydroxide exchange groups. The combination of exchange resins yields counter-ions that form water in the solution treated upon contact with the solution with the exchange resin mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.