Covestro Desmodur N 3300
Product Description
1.Aliphatic polyisocyanate (HDI trimer).
2.As the hardener component for lightfast polyurethane coating systems.
3.Form supplied: solvent-free
Product Data
| Property | Value | Unit of measurement |
| NCO content | 21.8 ± 0.3 | % |
| Viscosity at 23 °C | 3,000 ± 750 | mPa·s |
| Color value (Hazen) | ≤ 40 | |
| Monomeric HDI | < 0.15 | % |
| Viscosity at 25 °C | approx. 2,500 | mPa·s |
| Equivalent weight | approx. 193 | |
| approx. 193 | approx. 228 | |
| Flash point | approx. 228 | °C |
| Density at 20 °C | approx.1.16 | g/ml |
Application
Desmodur® N 3300 is used primarily as the hardener component for lightfast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols. The main applications for systems based on Desmodur® N 3300 are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing and plastics.
