Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Reexamination Certificate
2008-10-02
2011-10-18
Wilson, James O (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
C558S438000, C558S439000
Reexamination Certificate
active
08039660
ABSTRACT:
The present invention relates to the manufacture of nitrile compounds from unsaturated organic compounds by reaction with hydrogen cyanide. It relates more particularly to the manufacture of nitrile compounds of use in the synthesis of adiponitrile, an important chemical intermediate in the manufacture of major chemical compounds, such as hexamethylenediamine and ε-caprolactam. The invention provides a process for the manufacture of organic compounds comprising at least one nitrile functional group by carrying out a hydrocyanation reaction between hydrogen cyanide and an organic compound comprising at least one ethylenic unsaturation. This reaction is carried out in the presence of a catalytic system comprising a metal element chosen from the group consisting of nickel, platinum and palladium and an organophosphorus ligand, the reaction medium additionally comprising an ionic liquid in the liquid state at least at the temperature at which the hydrocyanation reaction is carried out.
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Basset Jean-Marie
Chauvin Yves
Galland Jean-Christophe
Niccolai Gerald
Valerio Christine
Buchanan Ingersoll & Rooney P.C.
Rhodia Polyamide Intermediates
Sackey Ebenezer O
Wilson James O
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