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Desmodur® N 3300A

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

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General Characterization

Desmodur N 3300A is an aliphatic polyisocyanate (HDI trimer).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur N 3300A 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.

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s approx. 3,000
Equivalent weight approx. 193
Specific gravity at 25°C g/cm^3 1.17
Weight per gallon at 25°C lb. 9.75
Flash point °C approx. 238

Specifications

Property Name Test Method Unit Value
Hazen color value ≤ 40
Monomeric HDI % ≤ 0.15
NCO content % 21.8 ± 0.3
Viscosity at 25°C mPa∙s 2,500 ± 750

Downloads

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

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