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Diphenylmethane diisocyanate (MDI) is the generic name of a product used in industrial settings. Polymeric MDI (PMDI), the primary technical/commercial form of MDI, is actually a mixture that contains 25-80% monomeric 4,4′-MDI as well as oligomers containing 3-6 rings and other minor isomers, such as the 2,2′-isomer. What is isocyanateRead More →