Preparation of organic isocyanates

Details Preparation of organic isocyanates Preparation of organic isocyanates

1980-11-14

1981-10-13

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

042947740

ABSTRACT:
A process for the preparation of an organic isocyanate by preparing a heated solution of an alkyl carbamate in a N,N-dialkyl aniline compound solvent which is catalytic with respect to the rate of decomposition of the carbamate but unreactive with respect to the organic isocyanate decomposition product.

REFERENCES:
patent: 3763217 (1973-10-01), Brill
patent: 3919279 (1975-11-01), Rosenthal et al.
patent: 3962302 (1976-06-01), Rosenthal et al.
patent: 4081472 (1978-03-01), Tsumura et al.
Mukaiyama et al., J. Am. Chem. Soc., vol. 78, pp. 1946-1948 (1956).
Mukaiyama et al., J. Chem. Soc. Japan, vol. 33 (8), pp. 1137-1143 (1960).
Griffin et al., I & EC Product Research and Development, vol. 1 (4), pp. 265-268 (1962).

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