Production of isocyanates from esters of aromatic carbamic acids

Details Production of isocyanates from esters of aromatic carbamic acids Production of isocyanates from esters of aromatic carbamic acids

1982-01-28

1984-12-11

Brust, Joseph Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

044877137

ABSTRACT:
A process for converting aromatic carbamates to their corresponding isocyanates by thermolysis at a pressure of at least atmospheric in the presence of a catalyst selected from Ti, Sn, Sb, and Zr is disclosed.

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Dyer, et al., J.A.C.S., 81, (1959), pp. 2138-2143, and 80, (1958), pp. 5495-5498.

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