Process for the removal of corrosion metal contaminants from liquid compositions
US5466876A · kind A · utility
15Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1994 |
| Grant date | Nov 14, 1995 |
| Priority date | — |
| Expiry date | Mar 4, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/573
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Corrosion metal contaminants are removed from a liquid composition comprising a carboxylic acid and/or an anhydride thereof, a rhodium carbonylation catalyst, and a carbonylation catalyst co-promoter by using a chelating resin selective for the removal of corrosion metals rather than carbonylation catalyst and co-promoter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.