Union Carbide Chemicals & Plastics Technology Corporation

John Braithwaite

David Robert Bryant

David James Miller

Manuk Colakyan

John E Logsdon

This invention relates to a process for producing one or more organic acids in high purity which process comprises (i) oxidizing in a liquid oxidation reactor one or more organic liquids with essentially pure oxygen or oxygen-enriched air containing at least about 50% oxygen, at a temperature sufficiently stable to prevent cycling of reaction rate, to produce a crude reaction product fluid, and (ii) refining said crude reaction product fluid to give said one or more organic acids in high purity. The oxidation temperature is preferably controlled to within about &plusmn;3&deg; C. of a target temperature. The organic acids described herein is useful in a variety of applications, such as intermediates in the manufacture of chemical compounds, pharmaceutical manufacture and the like.

Preparation of organic acids

This invention relates to the selective preparation of isophorone via aldol condensation of acetone using a calcined magnesium/aluminum mixed oxide catalyst derived from water-insoluble aluminum hydroxide carbonate hydrate and a water-insoluble magnesium carbonate compound.

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Seabrook, TX, United States of America

John Braithwaite