Desmodur® ultra N 3800
Aliphatic polyisocyanate (flexibilizing HDI trimer). As the hardener component for lightfast polyurethane coating systems.
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About
Product Types
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Material
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General Characterization
Desmodur ultra N 3800 is an aliphatic polyisocyanate (flexibilizing HDI trimer).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.
It is suitable for use as the hardener component for lightfast polyurethane coating systems.
Storage Conditions
Desmodur ultra N 3800 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. The product is sensitive to moisture. Storage at higher temperatures will result in increase of color and viscosity. Due to the raw materials used, the product can occasionally exhibit temperature-dependent turbidity. This turbidity can be reversed by thinning with solvents or heating carefully to maximum 50°C without adversely affecting the quality of the product. Recommended storage temperature is 0º-30ºC.
Sampling
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Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Weight per gallon at 20°C | lb. | 9.33 | |
| Equivalent weight | approx. 382 | ||
| Viscosity at 25^oC | mPa∙s | approx. 5,500 | |
| Flash point | °C | approx. 235 | |
| Density at 20°C | g/cm^3 | 1.12 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| NCO content | % | 11.0 ± 0.5 | |
| Monomeric HDI | % | < 0.1 | |
| Hazen color value | ≤ 80 | ||
| Viscosity at 23°C | mPa∙s | 6,000 ± 1,200 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
