The present invention is a process for aliphatic or cycloaliphatic isocyanate. The process comprises reacting an aliphatic or cycloaliphatic primary amine, with phosgene in the presence of an inert solvent wherein the initial reaction temperature is between 100 and 130° C. and the temperature is subsequently ramped to 150 to 180° C. during the course of the reaction, the solvent to amine weight ratio is 95:5 to 80:20, the total reaction pressure is maintained between 50 and 350 psig and the amine is rapidly dispersed in the phosgene through injection in a region of high efficiency mixing.
本发明是一种制备脂肪族或环脂肪族
异氰酸酯的方法。该方法包括在惰性溶剂存在下,将脂肪族或环脂肪族初级胺与
光气反应,其中初始反应温度在100至130℃之间,反应过程中逐渐升温至150至180℃,溶剂与胺的重量比为95:5至80:20,总反应压力保持在50至350 psig之间,并且通过在高效混合区注入使胺迅速分散在
光气中。