(formerly bayer) desmodur 44v20l polymethylene polyisocyanate crude mdi black material polymerized mdi 9016-87-9
product introduction 44v20 contains a certain amount of isocyanate and diphenyl with higher functionality a mixture of methane diisocyanate, dark brown liquid at room temperature. product usage 44v20 can be widely used in the manufacture of polyurethane rigid foam insulation materials; it can also be used in isocyanurate foam, coatings, adhesives, anti-seepage and plugging…
