Process for the preparation of carboxylic anhydrides from olefinic hydrocarbons
The present invention relates to an improved process for the preparation of organic carboxylic acid anhydrides, specifically by the reaction of ethylenically unsaturated compounds having 2 to 30 carbon atoms with carbon monoxide and carboxylic acids or substances which yield carboxylic acids under r...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention relates to an improved process for the preparation of organic carboxylic acid anhydrides, specifically by the reaction of ethylenically unsaturated compounds having 2 to 30 carbon atoms with carbon monoxide and carboxylic acids or substances which yield carboxylic acids under reaction conditions at a temperature of 50 DEG C to 300 DEG C and a partial pressure of carbon monoxide of from 1 to 200 atm. in the presence of a catalyst composition essentially comprised of 1. A COBALT OR NICKEL COMPOUND, AND 2. AN IODIDE COMPONENT SUBJECT TO THE CONDITIONS THAT THE ATOMIC RATIO OF IODIDE TO COBALT OR NICKEL IS FROM 1:1 TO 300: |
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