Process for preparing organic isocyanates

Details Process for preparing organic isocyanates Process for preparing organic isocyanates

1978-10-27

1980-03-18

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453SP, 260939, C07C11802

Patent

active

041939328

ABSTRACT:
An improved process for preparing organic isocyanates is disclosed. An organic amine is reacted with phosgene to yield a reaction product, through which hydrogen chloride gas is passed in the presence of an inert organic solvent whereby the gas included in the reaction product is removed and the acid substances and hydrolyzable chlorine-containing substances included therein are minimized.

REFERENCES:
patent: 2620349 (1952-12-01), Slocombe
patent: 3219678 (1965-11-01), Kober et al.
patent: 3234253 (1966-02-01), Cooper
patent: 3549504 (1970-12-01), Adica et al.
patent: 3857871 (1974-12-01), Hatfield, Jr. et al.

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