Desmodur® N 3700

Aliphatic polyisocyanate (highly functional HDI trimer). As the hardener component for lightfast, fast drying polyurethane coating systems.

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Product Types

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Material

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General Characterization

Desmodur N 3700 is an aliphatic polyisocyanate (highly functional HDI trimer).
It is suitable as the hardener component for lightfast, fast drying polyurethane coating systems.

Storage Conditions

Desmodur N 3700 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

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Packaging Type

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Hazen color value ≤ 80
NCO content % 20.0 ± 1.0
Monomeric HDI % ≤ 0.25
Viscosity at 23^oC mPa∙s 16,000 ± 4,000

Specifications

Property Name Test Method Unit Value
Flash point °C approx. 247
Equivalent weight approx. 210
Equivalent weight approx. 210
Viscosity at 25°C mPa∙s approx. 13,000
Density at 20^oC g/ml approx. 1.17

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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