PMDI
Polymeric Methylene diphenyl Di-Isocyanate Crude (Low Functionality)
Product Description
The current manufacturing technology of most isocyanates is based on the phosgenation of primary amines.
Applications:
Polymeric MDI is commonly used to manufacture:
- Rigid foams- used to produce sandwich panels and polyurethane wood.
- Flexible foams – used for the fabrication of prepolymers for bedding, furniture, automotive seating, flexible packaging and carpet underlay; this is the largest market application for Polymeric MDI
- “Foamed-in-place” polyurethane plastics – ranging from soft and sponge-like to hard and porous for use in furniture, packaging, insulation and boat building
- Polyurethane coatings – used on leather, wire, tank linings and masonry
- Rigid, “pour-in-place” foams – for use in appliances, and, in smaller amounts, packaging
- Cast elastomers – for production of articles such as roller blade wheels
| Property | Specification | Analytical Method |
| Appearance | Dark Brown liquid | Visual |
| NCO (Wt. %) | 30.0-32.0 | ASTM D5155-14 Method A |
| Hydrolysable Chloride (Wt.%) | Max. 0.2 | ASTM D4663-15 |
| Acidity as HCL (Wt.%) | Max. 0.05 | ASTM 6099-13(High acidity) |
| ASTM 5629-11(Low acidity) | ||
| Viscosity at 25(°C) (mPa.s) | 150-250 | ASTM D4889-15 |
| Specific Gravity at 25(°C) | 1.22-1.25 | ASTM D4659-14 |
| Isocyanate Equivalent Weight (gr/eq) | 131-140 | ASTM D5155-14 Method A |
Handling and storage conditions
Use only with adequate ventilation. Do not eat, drink, or smoke in working area. Never use welding/cutting torch near storage containers, even if empty, because even residual product can ignite explosively. Product must be stored at 20°C to 40°C.
Storage stability: The best time is 6 month and it can be extended to 12 month.
Packing details
In 220 lit (250 kg Net.) new steel drum, each 4 drums strapped on a wooden pallet.
| Application(s): | Rigid foams, Flexible foams, Foamed-in-place |
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TDS : Download
MSDS: Download
