Steel Drum **Chemical nature** Lupranat MM 103 is a carbodiimide-modified diphenylmethane-4,4-diisocyanate (MDI). The average functionality is about 2.2. **Applications** Lupranat MM 103 is used for the production of flexible polyurethanes such as microcellular elastomers, flexible and semi-rigid foams as well as for compact RIM parts. It is also used for the manufacture of coatings and adhesives.