Process for the manufacture of aromatic isocyanates

Details Process for the manufacture of aromatic isocyanates Process for the manufacture of aromatic isocyanates

1982-10-29

1984-10-23

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11806

Patent

active

044787570

ABSTRACT:
A process for the manufacture of aromatic isocyanates by carbonylation of nitro derivatives comprising carrying out the reaction in the presence of supported catalysts containing as the active phase particles or an oxide of a precious metal of Group VIII and of a metal selected from Group V.sub.B, VI.sub.B, and VIII of the Periodic Table; the precursor of the active phase being a heteropolymetallic complex and, more particularly, a mixed bimetallic cluster.

REFERENCES:
patent: 3674827 (1972-06-01), Lao et al.
patent: 3714216 (1973-06-01), Schnabel et al.

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