Lupranat ME 4,4'-Diphenylmethane diisocyanate BASF-Elastogran Polyurethane (PU) - Isocyanates >> MDI, diphenylmethane diisocyanate Lupranat ME is a 4,4'-diphenylmethane diisocyanate (MDI) with low acidity. Lupranat ME is used for the manufacture of elastomers and thermoplastic polyurethanes. It is also used for the production of coatings. Diphenylmethane-4,4'-diisocyanate (MDI) with low acidity. Used for the production of coatings, elastomers and thermoplastic polyurethanes.