Process for recovery of phosphine oxides and alklylsarylphosphin

Details Process for recovery of phosphine oxides and alklylsarylphosphin Process for recovery of phosphine oxides and alklylsarylphosphin

1997-08-11

1999-08-03

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Phosphorus containing

568 13, 568 15, C07F 950

Patent

active

059327707

ABSTRACT:
A process for separating off phosphine oxides and alkylarylphosphines from an organic reaction mixture of a homogeneous hydroformylation carried out with the use of a catalyst system, which reaction mixture contains organometallic complex compounds and, in a molar excess, ammonium salts of aromatic phosphines as ligands comprising subjecting the organic reaction mixture to an extraction treatment with a 0.001-0.5% strength by weight of an alkali metal hydroxide or alkaline earth metal hydroxide solution and separating off the aqueous phase containing the phosphine oxides and alkylarylphosphines to decrease markedly the concentration of the phosphine oxides and alkylarylphosphines in the hydroformylation mixture, which process is particularly suitable for continuously operated hydroformylations.

REFERENCES:
patent: 4740626 (1988-04-01), Bahrmann
patent: 5395979 (1995-03-01), Deckman
patent: 5741941 (1998-04-01), Bahrmann
CA:106:186370 abs of JP61120167 Jun. 1986.
Hawley's "condenser chem dictionary" 12ed p. 856 1993.

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