Lupranate M20S Polymeric MDI Liquid Isocyanate - 31.5% NCO Content, 200 cps Viscosity for PU Foam Systems
Lupranate® M20S is a high-performance polymeric MDI (methylene diphenyl diisocyanate) with a functionality of approximately 2.7, specifically formulated for polyurethane system applications including spray foam, pipe insulation, wood imitation panels, and refrigerator insulation.
- Rigid insulation foams by molding, spraying, and frothing
- Rigid and semi-flexible integral skin foams
- Adhesives, sealants, and elastomers
- High-resiliency flexible foams
- Large rigid foam panels and molded flexible foams
| Parameter | Value |
|---|---|
| Appearance | Dark brown liquid |
| NCO Content | 31.5 wt. % |
| Viscosity @ 25°C | 200 cps |
| Hydrolyzable Chlorine | 0.035 wt. % |
| Flash Point (COC) | 200°C |
| Density @ 25°C | 1.23 g/cm³ |
| Initial Boiling Point (5 mm Hg) | 190°C |
| Vapor Pressure @ 25°C | 0.0002 mm Hg |
- Extends foam rise time by 20-30% in low-catalyzed rigid urethane formulations
- Slower reactivity advantageous for large rigid foam panels and molded flexible foams
- Enhanced processing control and improved foam quality
Available in tank cars, tank trucks, and drums. Optimal storage temperature: 15-35°C. Below 15°C, pumping and pouring become difficult; below 0°C, crystallization may occur. Shelf life: 6 months when stored at 15-35°C with moisture exclusion.
Lupranate M20S is used to prepare various polyurethane products. Polyurethanes are organic materials and must be considered combustible. Proper safety precautions should be followed during handling and processing.
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