• Coatings

Desmodur® N 3400

Aliphatic polyisocyanate (HDI uretdione). As the hardener component for lightfast polyurethane coating systems.

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Product Types

  • PIC
  • Aliphatic polyisocyanate
  • Crosslinkers
  • Polyisocyanate
  • Hardeners
  • Polyisocyanurate
  • Isocyanate


Weather resistant, Low viscous, Solvent-free, Easy mixing, Waterborne

General Characterization

Desmodur N 3400 is an aliphatic polyisocyanate (HDI uretdione).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur N 3400 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. Recommended storage temperature is 0º-30ºC.


No data available

Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
Monomeric HDI % ≤ 0.30
Hazen color value ≤ 80.0
Viscosity at 25°C mPa∙s 152 ± 65
NCO content % 21.8 ± 0.7

Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s approx. 175
Weight per gallon at 25°C lb. 9.50
Specific gravity at 25°C g/cm^3 approx. 1.14
Equivalent weight approx. 193
Flash point °C approx. 180


Technical Data Sheet
Safety Data Sheet
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