Mondur MA 2603 is an isocyanate-terminated (MDI) prepolymer based on allophanate modified 4,4 ’-diphenylmethane-diisocyanate (MDI). Properties / Applications: Mondur MA 2603 prepolymer can be used as a raw material for the preparation of urethane coatings, sealants and adhesives. As with any product, use of Mondur MA 2603 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 |