Production of isocyanates from substituted ureas

Details Production of isocyanates from substituted ureas Production of isocyanates from substituted ureas

1974-09-25

1976-02-03

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11800

Patent

active

039364844

ABSTRACT:
A method for the production of isocyanic acid esters (isocyanates) from substituted ureas by thermally decomposing the substituted urea at elevated temperatures while said urea is dissolved in a suitable inert solvent and in the presence of an inert carrier agent to produce the isocyanate and/or amine as overhead products in the vapor phase minimizing the recombination of the isocyanate and the amine and separately recovering the isocyanate and amine.

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