Emil R. Sharafutdinov, Sofia I. Fiterman, Nikolay A. Rudnev, Rishat R. Shiriyazdanov
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引用次数: 0
Abstract
One of the highly sought products for import substitution in Russia are polyurethanes, which are mainly produced from isocyanates. Today, isocyanates are produced using toxic phosgene, and the by-products of this production are hydrogen chloride and other toxic chlorinated derivatives. For this reason, the task of developing phosgene-free isocyanate production technology has been facing researchers for more than a decade.Hexamethylene-1,6-diisocyanate (HDI) is the most commonly used aliphatic isocyanate. With excellent photo-oxidation stability, HDI is a very valuable petrochemical product with high added value.This paper reviews the currently existing phosgene-free technologies for producing HDI, as well as the latest developments in this area.
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