MDI
MDI
Methylene Diphenyl Diisocyanate (MDI) is a key component in the production of polyurethane-based products, particularly valued for its effectiveness in creating foams, elastomers, and coatings used across a variety of industries.
Safety
Although MDI is the least hazardous of the commonly used isocyanates due to its low vapor pressure, it is still not benign and must be handled with care
Production
MDI is produced through a four-step reaction process, starting with benzene as the primary feedstock. There are three isomers of MDI:
- 2,2-MDI
- 2,4-MDI
- 4,4-MDI (also known as pure or monomeric MDI (mMDI))
Polymeric MDI, also known as Crude MDI, contains both monomeric MDI and higher molecular weight compounds (pMDI).
Applications
MDI is widely used for producing a range of polyurethane products, including:
- Foams for insulation in construction and refrigeration.
- Polyurethane elastomers used in shoe soles, synthetic leather, and sports flooring.
- System houses for specialized polyurethane formulations.
- Applications in foundry and mining industries.
MDI provides versatility, durability, and enhanced insulation properties, making it essential for both industrial and consumer products.