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Preparation of .alpha.,.beta.-unsaturated carboxylic acids and esters

United States Patent

5,808,148
September 15, 1998
View the Complete Patent at the US Patent & Trademark Office
Disclosed is a process for the preparation of .alpha.,.beta.-unsaturated carboxylic acids and esters thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic acid, ester or anhydride in the presence of a catalyst comprising an oxide of niobium.
Gogate; Makarand Ratnakar (Durham, NC), Spivey; James Jerry (Cary, NC), Zoeller; Joseph Robert (Kingsport, TN)
Eastman Chemical Company (Kingsport, TN)
08/ 775,935
January 3, 1997
This invention was made with Government Support under DOE Contract No. DE-AC22-94PC94065 awarded by the Department of Energy. The Government has certain rights in this invention.