Desmodur® N 3390A BA/SN

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

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Product Types

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Material

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General Characterization

Desmodur ultra N 3390A BA/SN is an aliphatic polyisocyanate (HDI trimer).
It is suitable for use as the hardener component for lightfast polyurethane coating systems.

Storage Conditions

Desmodur ultra N 3390A BA/SN 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.

Sampling

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Packaging Type

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s 500 ± 150
NCO content % 19.6 ± 0.3
Hazen color value ≤ 40
Monomeric HDI % ≤ 0.10
Non-volatile content 2.2 g / 120 min 100^oC % 90 ± 1

Specifications

Property Name Test Method Unit Value
Viscosity at 25°C mPa∙s approx. 500
Equivalent weight approx. 214
Flash point °C approx. 50
Density at 20°C g/ml approx. 1.13

Downloads

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

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