Lupranat M 20 W 4,4'-Diphenylmethane diisocyanate BASF-Elastogran PU - Prepolymers >> Isocyanate >> MDI based Lupranat M 20 W is a solvent-free product based on 4,4'-diphenylmethane diisocyanate (MDI)containing oligomers of high functionality and isomers. The average functionality is 2.7. Lupranat M 20 W is used as a co-component for the production of flexible foam systems, especially those from which the foam is not subject to crushing the foam after processing. It is also used for the manufacture of critical semi-rigid and packaging systems. Solvent-free product based on diphenylmethane-4,4'-diisocyanate (MDI) containing oligomers of high functionality and isomers.