Preparation of carboxylic acid anhydrides
US4483803A · kind A · utility
22Cited by
1References
4Claims
0Family size
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Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/66
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A carboxylic acid anhydride, such as propionic anhydride, is prepared from an olefin and a carboxylic acid in carbonylation processes comprising the use of a halide, carbon monoxide and a molybdenum-nickel-alkali metal, a tungsten-nickel-alkali metal or a chromium-nickel-alkali metal component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.