Separation of organic phosphorus compounds and their metal complexes from organic nitriles in the hydrocyanation of olefins
Abstract
Abstract A PROCESS FOR SEPARATING AN ORGANIC PHOSPHORUS COMPOUND SUCH AS A PHOSPHITE OR PHOSPHOKITE OR A ZEROVALENT NICKEL COMPLEX OF THE ORGANIC PHOSPHORUS COMPOUND FROM A PRODUCT FLUID CONTAINING ORGANIC NITRILES PRODUCED BY HYDROCYANATING AN ETHYLENICALLY UNSATURATED ORGANIC MONO-NITRILE SUCH AS 3-PENTENENITRILE THROUGH EXTRACTION OF THE PRODUCT FLUID WITH A PARAFFIN OR CYCLOPARAFFIN HYDROCARBON SOLVENT AT A TEMPERATURE OF ABOUT 0*C. TO ABOUT 100*C. TO PRODUCE A MULTIPHASE MIXTURE WHEREIN THE ORGANIC PHOSPHORUS COMPOUNDS AND THEIR METAL COMPLEXES ARE CONTAINED PREDOMINANTLY IN THE HYDROCARBON PHASE AND THE ORGANIC MONO-AND DINITRILES AND DEGRADATION PRODUCTS ARE CONTAINED IN A SEPARATE PHASE.
Inventors
- 👤 J Walter
Bibliographic Details
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