Manufacture of dinitriles from thiodinitriles

Details Manufacture of dinitriles from thiodinitriles Manufacture of dinitriles from thiodinitriles

B - Operations, Transporting

01

J

260/558.2, 260/5

B01J 23/76 (2006.01) B01J 23/72 (2006.01)

Patent

CA 1056401

MANUFACTURE OF DINITRILES FROM THIODINITRILES ABSTRACT OF THE DISCLOSURE The invention is the extrusion of sulphur from thiodinitriles to obtain the corresponding dinitrile by heating the thiodinitrile at a temperature of 200° to 700°C. For example, sulfur is extruded from to thiodipropionitrile obtain adiponitrile. This extrusion reaction can be either a strictly thermal reaction employing no other reactant or a reaction conducted in the presence of other gases, liquids or solids.

238475

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