| abstract |
PROCESS FOR THE CATALYTIC PREPARATION OF AN ACID, ANHYDRIDE OR CARBOXYLIC ACID ESTER BY CARBONYLATION OF AN OLEFIN. AN ACID, ANHYDRIDE OR ESTER OF CARBOXYLIC ACID, SUCH AS PROPIONIC ACID, PROPIONIC ANHYDRIDE OR METHYL PROPIONATE, IS PREPARED BY CARBONYLATION OF AN OLEFINE, SUCH AS ETHYLENE, IN THE PRESENCE OF WATER, OF A CARBOXYLIC ACID AND OR OF AN ALCOHOL AND IN THE PRESENCE OF A SYSTEM WITH A CATALYTIC EFFECT INCLUDING A HALOGENIDE AND, AS CO-CATALYST, MOLYBDENE-NICKEL-METAL ALKALINE, TUNGSTENE-NICKEL-METAL ALKALINE OR CHROME ALCICKEL-METAL . THE PROCESS CAN BE CARRIED OUT UNDER MODERATE PRESSURE AND GIVES, IN PARTICULAR, SOLVENTS OR SYNTHESIS INTERMEDIARIES. |