Desmodur® 2873

Silane-functional aliphatic polyisocyanate based on hexamethylene diisocyanate.

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Product Types

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General Characterization

Silane-functional aliphatic polyisocyanate based on hexamethylene diisocyanate.
As hardener component for lightfast, weather-stable 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.


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Packaging Type

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Technical Properties & Datasheets


Property Name Test Method Unit Value
Equivalent weight approx. 341
Density at 20 °C DIN EN ISO 2811 g/cm3 1.150
Flash point DIN EN ISO 2719/A °C 185


Property Name Test Method Unit Value
Color value (Hazen) DIN EN 1557 ≤ 60
Monomeric HDI DIN EN ISO 10283 % ≤ 0.25
NCO content DIN EN ISO 11 909 % approx. 12.3
Viscosity at 23 °C DIN EN ISO 3219/A.3 mPa*s approx. 450


Technical Data Sheet
Safety Data Sheet
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