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This report presents a techno-economic analysis of Hexamethylene Diisocyanate (HDI) production from hexamethylene diamine (HMDA) in the United States. The process presented in this report is a non-phosgene process similar to BASF process. Initially, HMDA reacts with urea and butanol generating a carbamate intermediate. Then, the carbamate is thermally cracked producing HDI.
This study provides the economics of a phosgenation process for Hexamethylene Diisocyanate (HDI) production from hexamethylene diamine (HMDA) in the United States. In this process, HMDA reacts with phosgene to produce HDI. The phosgene used is generated from chlorine and carbon monoxide in an on-site unit. Hydrogen chloride (HCl) is generated as by-product.