Process for the preparation of aliphatic isocyanates

Details Process for the preparation of aliphatic isocyanates Process for the preparation of aliphatic isocyanates

1977-12-12

1979-04-24

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

041511930

ABSTRACT:
Symmetric ureas are converted to aliphatic isocyanates in high yields by reacting said ureas with phosgene at temperatures of at least 150.degree. C. and in a solvent having a boiling temperature greater than 150.degree. C.

REFERENCES:
patent: 3275669 (1966-09-01), Ulrich et al.
Hentschel, Berichte, vol. 17, pp. 1284-1289 (1884).

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