Mondur 489 is a high-functionality polymeric diphenylmethane-diisocyanate (PMDI). Properties / Applications: Mondur 489 polyisocyanate is used in the manufacture of polyurethane/polyisocyanurate laminates and insulated metal parts. As with any product, use of Mondur 489 in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. Information provided by Covestro |