1.desmodur 44v20l, poly (methylene (polifenil izotsyanat)) (polymeric mdi) refers to poliurytaniv.�cas number 9016-87-9 formula [c6h3 (nco) ch2] n.�viscous liquid of dark brown, odorless.�used to own production of polyurethane.�isocyanate number is 31.36%, density at 25 � c-215mpa * s.�.