Desmodur® N 3700
Aliphatic polyisocyanate (highly functional HDI trimer). As the hardener component for lightfast, fast drying polyurethane coating systems.
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About
Product Types
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Material
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General Characterization
Desmodur N 3700 is an aliphatic polyisocyanate (highly functional HDI trimer).
It is suitable as the hardener component for lightfast, fast drying polyurethane coating systems.
It is suitable as the hardener component for lightfast, fast drying polyurethane coating systems.
Storage Conditions
Desmodur N 3700 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. Storage at significant lower temperatures will result in solidification. This solidification is reversible by briefly heating the product 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 |
|---|---|---|---|
| Density at 20^oC | g/ml | approx. 1.17 | |
| Viscosity at 25°C | mPa∙s | approx. 13,000 | |
| Equivalent weight | approx. 210 | ||
| Flash point | °C | approx. 247 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Viscosity at 23^oC | mPa∙s | 16,000 ± 4,000 | |
| Monomeric HDI | % | ≤ 0.25 | |
| NCO content | % | 20.0 ± 1.0 | |
| Hazen color value | ≤ 80 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
