Process for the production of organic isocyanates

摘要

Process for the production of organic isocyanates comprising the following steps: (1) reacting an amine compound with an organic carbonate in the presence of a catalyst and an organic solvent; (2) removing the catalyst; (3) thermally decomposing the solution of the carbamate formed in step (1) in said organic solvent; and (4) separating the organic solvent/alcohol mixture thus obtained from the organic isocyanate formed in step (3) by distillation.