Continuous process for the production of organic isocyanates

Details Continuous process for the production of organic isocyanates Continuous process for the production of organic isocyanates

1982-05-20

1983-12-06

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11802

Patent

active

044192959

ABSTRACT:
Organic mono- or poly-isocyanates are produced on a continuous basis by phosgenating the corresponding amines. A solution of the amine to be phosgenated is continuously sprayed through a smooth-jet nozzle into a solution of phosgene continuously flowing through a mixing chamber. The mixing chamber is maintained at a temperature of 120.degree.to 300.degree. C. and a pressure of from 10 to 1000 bars. The molar ratio of phosgene to primary amino groups is generally from 2:1 to 30:1.

REFERENCES:
patent: 3507626 (1970-04-01), Van Horn
patent: 3781320 (1973-12-01), Irwin
patent: 3978108 (1976-08-01), Teisseire et al.
patent: 4289732 (1981-09-01), Bauer et al.
patent: 4292255 (1981-09-01), Hennig et al.

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