Suprasec 2401 Modified polymeric diphenylmethane diisocyanate Huntsman Polyurethane (PU) - Isocyanates >> MDI, diphenylmethane diisocyanate >> Modified MDI Used for the formulation of adhesives, coatings and elastomers. Suprasec 2497 Mid functionality MDI Modified polymeric MDI with low viscosity and increased miscibility Low viscosity, mid functionality, modified polymeric MDI. Used for the formulation of coatings. Provides increased miscibility.