- Coatings, paints & inks
Desmodur® N 3900
Low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate. As the hardener for weather-stable coating systems.
i
Market Switch
Selection will influence the results you get.
About
Product Types
- PIC
- HDI
- Aliphatic polyisocyanate
- Crosslinkers
- Polyisocyanate
- Hardeners
- Polyisocyanurate
- Isocyanate
Material
- Coatings, paints & inks
- Weather resistant, Low viscous, Solventborne, Solvent-free, Easy mixing, Waterborne
General Characterization
Desmodur N 3900 is a low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate (HDI).
It is used as the hardener for weather-stable coating systems.
It is used as the hardener for weather-stable coating systems.
Storage Conditions
Desmodur N 3900 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
No data available
Packaging Type
No data available
Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Density | g/cm^3 | approx. 1.15 | |
| Flash point | °C | approx. 203 | |
| Equivalent weight | approx. 179 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Monomeric HDI | % | < 0.25 | |
| Hazen color value | ≤ 40 | ||
| Viscosity at 23°C | mPa∙s | 730 ± 100 | |
| NCO content | % by wt. | 23.5 ± 0.5 |
Downloads
-
Technical Data Sheet
-
Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
