Chemical & Material
Methylene Diphenyl Diisocyanate (MDI)
Methylene Diphenyl Di-isocyanate is most often abbreviated as MDI, is an aromatic diisocyanate. Three isomers are common, varying by the positions of the isocyanate groups around the rings: 2, 2'-MDI, 2,4'-MDI, and 4,4'-MDI. MDI reacts with polyols in the manufacture of polyurethane.
- Types
- Polymeric MDI · Pure MDI · Modified MDI
- Applications
- Rigid Foam · Flexible Foam · Coatings
5 editions31 December 2025