Desmodur® U N 3790 BA
Aliphatic polyisocyanate (high functional HDI trimer).
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About
Product Types
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Material
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General Characterization
Aliphatic polyisocyanate (high functional HDI trimer).
As the hardener component for lightfast, rapid-drying polyurethane coating systems.
As the hardener component for lightfast, rapid-drying polyurethane coating systems.
Storage Conditions
- Storage in original sealed Covestro container.
- Recommended storage temperature: 0 - 30 °C.
- Protect from moisture, heat and foreign material.
General information: 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: 0 - 30 °C.
- Protect from moisture, heat and foreign material.
General information: 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.
Sampling
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Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Flash point | DIN 53 213/1 | °C | approx. 42 |
| Density at 20 °C | DIN EN ISO 2811 | g/ml | approx. 1.13 |
| Equivalent weight | approx. 236 | ||
| Viscosity at 25 °C | DIN EN ISO 3219/A.3 | mPa*s | approx. 1,600 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Viscosity at 23 °C | DIN EN ISO 3219/A.3 | mPa*s | 1,800 ± 500 |
| NCO content | DIN EN ISO 11 909 | % | 17.8 ± 0.5 |
| Monomeric HDI | DIN EN ISO 10 283 | % | < 0.1 |
| Color value (Hazen) | DIN EN 1557 | ≤ 40 | |
| Non-volatile content (2.2 g / 120 min / 100 °C) | DIN EN ISO 3251 | % | 90 ± 1 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
