Author Description

This report presents a cost analysis of Methylene Diphenyl Diisocyanate (MDI) production from aniline and formaldehyde The process examined is a typical oxidative carbonylation process. In this process, aniline undergoes oxidative carbonylation to give ethyl phenylcarbamate (EPC). Then, the EPC reacts with formaldehyde to form diphenylene diurethane (MDU). Finally, MDU is decomposed to MDI. Polymeric MDI (PMDI) is also generated as product. This report was developed based essentially on the following reference(s): (1) "Isocyanates, Organic", Kirk-Othmer Encyclopedia of Chemical Technology, 5th edition (2) EP Patent 0110732, issued to Asahi Chemical in 1986 Keywords: Methylene Diphenyl Diisocyanate, MDI, Non-Phosgene Process, Asahi