SEARCH Articles Figures Tables 4,4 -Methylene diphenylene diisocyanate 4,4 -methylene dicyclohexyl diisocyanate Diisocyan Diisocyanate polymeric methylene Diisocyanate, methylene 4,4-diphenyl Diisocyanates Methylene diphenyl diisocyanate Methylene bisphenyl diisocyanate Methylene diisocyanate , health Methylene diisocyanate , toxicity Methylene diisocyanate poly Methylene diphenyl diisocyanate (MDI Polymeric methylene diisocyanates