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

Patent ·
OSTI ID:871334
 [1];  [2];  [3];  [3]
  1. Cary, NC
  2. Durham, NC
  3. Kingsport, TN
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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.

Research Organization:
RTI International, Research Triangle Park, NC (United States)
DOE Contract Number:
AC22-94PC94065
Assignee:
Eastman Chemical Company (Kingsport, TN)
Patent Number(s):
US 5710328
OSTI ID:
871334
Country of Publication:
United States
Language:
English

References (7)

Reaction of Methyl Propionate with Methylal over V–Si–P Ternary Oxide Catalysts journal December 1990
Reaction of propionic acid with methylal over vanadium-silicon-phosphorus oxide journal January 1990
The production of methacrylic acid by the vapor-phase aldol condensation of propionic acid with formaldehyde journal July 1990
The Production of Methacrylic Acid by the Vapor-Phase Aldol Condensation over V–Si–P Ternary Oxide Catalyst journal April 1990
Editorial journal January 1987
Preparation of high-surface-area titanium-vanadium binary pyrophosphate catalysts journal March 1989
Vapor-Phase Aldol Condensation of Formaldehyde with Propionic Acid on Vanadium Pentoxide—Phosphorus Pentoxide journal January 1988

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Related Subjects

preparation
alpha
beta
-unsaturated
carboxylic
acids
anhydrides
disclosed
process
comprises
contacting
formaldehyde
source
anhydride
presence
catalyst
comprising
mixed
oxides
vanadium
phosphorus
optionally
third
component
selected
titanium
aluminum
preferably
silicon
mixed oxide
-unsaturated carboxylic
comprises contacting
carboxylic acids
catalyst comprising
carboxylic acid
mixed oxides
component selected
contacting formaldehyde
/999/