• Coatings

Desmodur® XP 2838

Aliphatic polyisocyanate. As the hardener component for lightfast polyurethane coating systems.

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Product Types

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


Fast curing, Solvent-free, Weather resistant

General Characterization

Desmodur XP 2838 is an aliphatic polyisocyanate.
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur XP 2838 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.


No data available

Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
Hazen color value ≤ 80
NCO content % 21.0 ± 0.5
Monomeric IPDI % < 0.15
Monomeric HDI % < 0.2
Viscosity at 23^oC mPa∙s 3,000 ± 750

Property Name Test Method Unit Value
Flash point °C approx. 181
Viscosity at 25^oC mPa∙s approx. 2,700
Equivalent weight approx. 200
Equivalent weight approx. 200
Density at 20^oC g/ml approx. 1.15


Technical Data Sheet
Safety Data Sheet
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