C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/482.7, 260/5
C07C 57/04 (2006.01) C07C 51/353 (2006.01) C07C 69/54 (2006.01)
Patent
CA 1193613
PREPARATION OF UNSATURATED ACIDS AND ESTERS BY OXIDATIVE CONDENSATION ABSTRACT This invention relates to a novel vapor phase process for the production of unsaturated acids and esters, such as acrylic acid and methyl acrylate, by reacting a primary alcohol with a saturated monocarboxylic acid, ester, or anhydride in the presence of oxygen over a solid catalyst. BACKGROUND OF THE INVENTION Preparation of unsaturated acid derivitives from corresponding saturated compounds by condensation with formaldehyde is known. For example, U.S. Patent No. 3,701,798 disclosed the production of unsaturated acid derivatives through condensation with formaldehyde over catalysts containing rare earth oxides. U.S. Patent No. 3,014,958 discloses an improvement for making unsaturated esters from formaldehyde and other esters wherein the feed contains more than 7% of the desired unsaturated ester. Catalysts used in this reference are phosphates and mixed oxides. U.S. Patent No. 3,933,888, U.S. 3,578,702 and U.S. 4,165,438 all disclose reactions using formaldehyde over various oxide catalysts such as vanadium-phosphorus, metals of the lanthanide series, or metals found in Groups IIA and Group IIIA of the Periodic Table. 1.
417257
Grasselli Robert K.
Guttmann Andrew T.
Gowling Lafleur Henderson Llp
The Standard Oil Company
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