Preparation of organic acids

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 51/235 (2006.01) B01J 10/00 (2006.01) B01J 19/00 (2006.01) B01J 19/18 (2006.01) B01J 19/20 (2006.01) C07C 51/265 (2006.01) C07C 53/02 (2006.01) C07C 53/08 (2006.01) C07C 53/122 (2006.01) C07C 53/124 (2006.01) C07C 53/126 (2006.01) C07C 55/14 (2006.01) C07C 57/30 (2006.01) C07C 57/32 (2006.01) C07C 59/64 (2006.01) C07C 63/06 (2006.01) C07C 63/16 (2006.01) C07C 63/24 (2006.01) C07C 63/26 (2006.01)

Patent

CA 2329309

This invention relates to a process for producing one or more org anic 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 ~3 ~C of a target temperature. The organic acids described herein are useful in a variety of applications, such as intermediates in the manufacture of chemical compounds, pharmaceutical manufacture and the like.

Cette invention concerne un procédé de production d'un ou de plusieurs acides organiques, très purs, ce procédé comprenant les étapes consistant (i) à oxyder dans un réacteur d'oxydation liquide un ou plusieurs liquides organiques à l'aide d'oxygène généralement pur ou d'air enrichi d'oxygène et contenant au moins 50 % d'oxygène, à une température suffisamment stable pour empêcher des changements extrêmes et périodiques dans la vitesse de réaction, afin d'obtenir un fluide de réaction brut, et (ii) à raffiner ce fluide pour obtenir un ou plusieurs acides organiques très purs. La température d'oxydation est, de préférence, régulée pour se situer à environ ±3 ·C d'une température cible. Les acides organiques décrits sont utiles dans plusieurs applications, notamment en tant qu'intermédiaires dans la fabrication de composés chimiques, pharmaceutiques et analogue.

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