Iodide removal process
US5561168A · kind A · utility
2Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1993 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Jan 14, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/47
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the use of ion exchange resins having metal-exchanged thiol functional groups in removing iodide impurities from carboxylic acids and/or carboxylic acid anhydrides. More particularly, this invention provides a process for removing iodide impurities from liquid carboxylic acids and/or carboxylic acid anhydrides using ion exchange resins in which thiol functional groups have been exchanged with silver, palladium or mercury.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.