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MDI |
Chemical Nature
POLYMER MDI is a MDI with a functionality of approximately 27
Applications
Polymer MDI is a suitable for the production of rigid insulation foams by molding,spraying and frothing.
It is also used for rigid and semi flexible integral skin foams, adhesives, elastomers and high resiliency flexible foams. In low catalyzed rigid urethane formulations the foam rise time can be lengthened by 20-30%. The lower reactivity can be advantageous in applications such as large rigid foam panels or molded flexible foams. |
Typical properties |
| Appearance |
Brown Liquid |
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| NCO content, weight% |
29.6-31.8 |
ASTM D1636-74 |
| Viscosity @25˚C, Cps |
175-230 |
DIN 51 550 |
| Total Chloride, wt% |
0.5 |
ASTM D1638-74 |
| Flash Point, ˚C (COC) |
190 |
DIN ISO 2588 |
| Density @ 25˚C, g/ml |
1.23 |
DIN 51 757 |
| Initial Boiling Point, 5mmHg, ˚C |
190 |
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| Vapor pressure @ 25˚C, mmHg |
0.0001 |
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Safety Advice
This product is sold only for use by industrial institutions. Refer to our material safety data sheet (MSDS) regarding regulatory compliance, safety, hazards, spill procedures and disposal of this product. |
Supply and Storage
Polymer MDI can be supplied in road tanks and in non-returnable drums of 250kg capacity. The most favorable temperature for storage is 15-30˚C. Under these conditions the shelf life of Ploymer MDI is six months. Once a container has been opened, care should be taken to exclude moisture if stored at higher temperature, or if below 15˚C, the product becomes difficult to pump and pour. Below 0˚C, crystallization may occur. Melting the crystal is ideally by rolling the drum in a hot air oven at 80-100˚C so that isocyanate should not be heated above 70˚C. |
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