Selective extraction of triphenylphosphine oxide from...

Details Selective extraction of triphenylphosphine oxide from... Selective extraction of triphenylphosphine oxide from...

C - Chemistry, Metallurgy

07

F

260/613.5

C07F 9/53 (2006.01) B01J 31/40 (2006.01) C07C 45/50 (2006.01) C07F 9/02 (2006.01) C07F 15/00 (2006.01)

Patent

CA 1057310

ABSTRACT OF THE DISCLOSURE: A process for the selective extraction of triphenyl- phosphine oxide from the distillation tails of an oxo-process, carried out with rhodium carbonyl complexes and triphenylphosphine as a catalyst. The process of the invention is characterized in that a portion of the tails is treated with a solvent mixture composed of water and polar organic compounds selected from the group consisting of alcohols and ketones, at a temperature at least higher than the melting point of the tails, whereby a polar phase containing a substantial portion of triphenylphosphine oxide and another phase rich in triphenylphosphine and containing the rhodium complexes are formed.

228921

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