METHOD FOR PRODUCING ISOCYANATE COMPOUND

摘要

Disclosed is a method for producing an isocyanate compound through reaction between a carbonate of a corresponding amine compound and phosgene, wherein phosgene is introduced into an organic solvent solution of the carbonate of the amine compound. This method for producing an isocyanate compound is characterized in that introduction of phosgene into the organic solvent solution of the carbonate is started at a temperature equal to or lower than the temperature at which the carbonate is decomposed. With this method, a hardly colored isocyanate compound can be produced commercially advantageously.