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Carboxylic acid accelerated formation of diesters

United States Patent

April 28, 1998
View the Complete Patent at the US Patent & Trademark Office
This invention pertains to accelerating the rate of formation of 1,1-dicarboxylic esters from the reaction of an aldehyde with a carboxylic acid anhydride or a ketene in the presence of a non-iodide containing a strong Bronsted acid catalyst by the addition of a carboxylic acid at about one bar pressure and between about and C. in the substantial absence of a hydrogenation or carbonylation catalyst.
Tustin; Gerald Charles (Kingsport, TN), Dickson; Todd Jay (Kingsport, TN)
Eastman Chemical Company (Kingsport, TN)
08/ 766,247
December 13, 1996
The Government of the United States of America has rights in this invention pursuant to Cooperative Agreement No. DE-FC22-95PC93052 awarded by the U.S. Department of Energy.