Keywords: Methylene diphenyl 4,4'-diisocyanate.PNG Chemical structure of methylene diphenyl 4 4'-diisocyanate MDI commonly used in polyurethane industry H Padleckas created this image file on March 29-30 2005 especially for use in the article Isocyanate in Wikimedia H Padleckas 00 03 1 Apr 2005 UTC chemical Isocyanates Diphenylmethanes |