Methylene Diphenyl Diisocyanate (MDI) CAS:101-68-8 MDI is produced by a 4 steps reaction based on benzene as feedstock. There are 3 isomers of MDI : 2,2-MDI, 2,4-MDI, and 4,4-MDI. The 4,4 isomer is known as pure or monomeric MDI (mMDI).The Polymeric MDI so called Crude MI contains monomeric MDI and products with higher MW (pMDI). […]
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