Process for the purification of carboxylic acids and/or...

Details Process for the purification of carboxylic acids and/or... Process for the purification of carboxylic acids and/or...

C - Chemistry, Metallurgy

07

C

C07C 53/12 (2006.01) C07C 51/12 (2006.01) C07C 51/42 (2006.01) C07C 51/44 (2006.01) C07C 51/54 (2006.01) C07C 51/573 (2006.01) C07C 53/08 (2006.01)

Patent

CA 2078850

7718(2) ABSTRACT OF THE DISCLOSURE PROCESS FOR THE PURIFICATION OF CARBOXYLIC ACIDS AND/OR THEIR ANHYDRIDES A process for purifying an iodide-contaminated carboxylic acid and/or anhydride fraction obtained by liquid phase carbonylation using a carbonylation catalyst, an iodine-containing promoter and optional iodine-containing copromoter comprises vapourising the fraction after it has been freed of catalyst, feedstock and promoter components to produce a vapour acid and/or anhydride fraction having reduced iodide contamination.

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