MDI -100 (ntshiab MDI) yog MDI (lub thiaj li hu ua ntshiab MDI) muaj ntau tshaj 99% ntawm 4,4'-diphenylmethane diisocyanate. Nws yog xim dawb los yog daj daj nyob rau hauv chav tsev kub thiab melts mus rau hauv cov xim tsis muaj xim rau yellowish kua.Lub melting point yog 38 degree, qhov tshwj xeeb lub ntiajteb txawj nqus yog 1.19, thiab cov ntsiab lus ntawm "-NCO" pab pawg neeg yog 33.6%. (muaj ob pawg-NCO ntawm ib lub molecule); nws yog feem ntau siv hauv kev lag luam polyurethane ua fiber ntau (spandex), thiab tuaj yeem siv los ua prepomer (elastomer, thiab lwm yam) rau kev sib txuas; Cov txheej txheem tseem ceeb ntawm kev siv cov nitrobenzene catalytic hydrogenation txoj kev: kom yooj yim ntawm kev siv, siv qee cov txheej txheem tshwj xeeb (carbonized diimide hloov kho, zoo ib yam li quenching) los kho nws thiab ua kua hauv chav tsev kub.
Polymeric MDI yog ib qho kev sib xyaw uas muaj ob qho tib si 4,4'-diphenylmethane diisocyanate thiab polyphenylmethane polyisocyanate, nrog rau kev ua haujlwm tsawg kawg yog 2.6 zoo li ib qho siv hauv cov foams nruj.Qhov txawv tsuas yog nyob rau hauv qhov sib ntxiv ntawm cov khoom ntxiv nrog cov khoom txhim kho.,
Ntshiab MDI (tshwj xeeb lub npe yog diphenylmethane diisocyanate) thiab polymeric MDI (tshuaj lub npe yog polymethylene polyphenylisocyanate) English lub npe: Pure MDI, Polymeric-MDI Polymerization MDI: Nws yog xim av tsaus los yog xim av kua nyob rau hauv chav tsev kub, nrog ib tug tshwj xeeb gravity ntawm 1.19 thiab adjustable viscosity. General polymerization MDI viscosity feem ntau yog 150-250Mpa.Nruab nrab s/25 degree, cov ntsiab lus ntawm "-NCO" pawg yog 30-32%.