NON-PHOSGENE ROUTE TO THE MANUFACTURE OF ORGANIC ISOCYANATES

摘要

A phosgene-free process for producing organic isocyanates reacts an organic formamide with a diorganocarbonate and thermolyzing the reaction product to obtain the corresponding organic isocyanate. Byproducts may be cycled back to the reaction or recycled to produce additional starting materials. The process produces organic isocyanates in high yield.