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

United States Patent

*** EXPIRED ***
January 20, 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 anhydrides thereof which comprises contacting formaldehyde or a source of formaldehyde with a carboxylic anhydride in the presence of a catalyst comprising mixed oxides of vanadium, phosphorus and, optionally, a third component selected from titanium, aluminum or, preferably silicon.
Spivey; James Jerry (Cary, NC), Gogate; Makarand Ratnakav (Durham, NC), Zoeller; Joseph Robert (Kingsport, TN), Tustin; Gerald Charles (Kingsport, TN)
Eastman Chemical Company (Kingsport, TN)
08/ 562,860
November 27, 1995
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.