PROCESS FOR THE PRODUCTION OF AROMATIC ISOCYANATES

摘要

A process for production of aromatic isocyanates by the reaction of an aromatic nitro compound with carbon monoxide at an elevated temperature under an elevated pressure in the presence of a catalyst, which is characterized in that the catalyst is a product obtained by contacting a halogen-containing platinum group metal compound with a high molecular weight compound having a nitrogen-containing heteroaromatic ring in the molecule and is advantageous in that the objective aromatic isocyanates can be produced in excellent yields and the catalyst can be readily separated and used repeatedly.