SEARCH Articles Figures Tables 4,4 -Methylene diphenylene diisocyanate 4,4 -diphenylene methane diisocyanate Dibenzofuran diphenylene oxide Diphenylene dioxide Diphenylene disulfide Diphenylene iodonium Diphenylene ketone oxide Diphenylene oxide Diphenylene sulfide Diphenylenes Tenax (2, 6-diphenylene oxide