Suprasec 2214 Diphenylmethane diisocyanate Huntsman Polyurethane (PU) - Isocyanates >> MDI, diphenylmethane diisocyanate Used for the formulation of adhesives, coatings and elastomers. Suprasec 2214 Mid functionality MDI Low viscosity Gives good penetration and wetting Low viscosity, mid functionality MDI. Used for the formulation of coatings. Gives good penetration and wetting.