PEP Review 80-1-4
PMPPI from Nitrobenzene by Carbonylation
Published: February 1981
A revised evaluation is made on polymethylene polyphenylene isocyanate manufacture by a carbonylation process incorporating the features of two ARCO patents. We conclude that this process can be economically viable, but the production cost of PMPPI made by this process, at its curent stage of development, is higher than that of PMPPI made by the conventional, phosgenation process.