Suprasec 2211 Reactivity-modified diphenylmethane diisocyanate Huntsman Polyurethane (PU) - Isocyanates >> MDI, diphenylmethane diisocyanate >> Modified MDI Used for the formulation of adhesives, coatings and elastomers. Suprasec 2211 High functionality reactivity-modified MDI Used in systems where a slower cure speed is needed. High functionality reactivity-modified MDI. Used for the formulation of coatings. Provides slow cure speed.