Mondur 3694 is a low-functionality polymeric diphenylmethane diisocyanate (PMDI). Properties / Applications: Mondur 3694 isocyanate is used in the formulation of polyether and polyester flexible urethane foams, High Resilience (HR) and Viscoelastic foams. As with any product, use of Mondur 3694 isocyanate 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 |