Thermal decomposition of aryl urethanes

Details Thermal decomposition of aryl urethanes Thermal decomposition of aryl urethanes

1980-10-14

1982-05-18

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

043304796

ABSTRACT:
A process for making aryl isocyanates comprises thermally decomposing aryl urethanes at a temperature between 175.degree. C. and 600.degree. C. in the presence of a catalyst, present in the heterogeneous phase, said catalyst being a metal selected from the group consisting of zinc, aluminum, titanium, iron, chromium, cobalt and nickel.

REFERENCES:
patent: 3919279 (1975-11-01), Rosenthal et al.
patent: 3919280 (1975-11-01), Rosenthal et al.
patent: 4081472 (1978-03-01), Tsumura et al.

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