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  • Coatings, paints & inks

Desmodur® N 3790 BA

Aliphatic polyisocyanate (high functional HDI trimer). As the hardener component for lightfast, rapid-drying polyurethane coating systems.

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About

Product Types

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

Material

Coatings, paints & inks
High functional, Solventborne, Weather resistant

General Characterization

Desmodur N 3790 BA is an aliphatic polyisocyanate (high functional HDI trimer).
It is suitable for use as the hardener component for lightfast, rapid-drying polyurethane coating systems.

Storage Conditions

Desmodur N 3790 BA 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

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Equivalent weight approx. 236
Viscosity at 25°C mPa∙s approx. 1,600
Specific gravity at 20°C g/ml approx. 1.13
Flash point °C approx. 42
Weight per gallon at 20°C 9.41

Specifications

Property Name Test Method Unit Value
Non-volatile content (2.2 g / 120 min / 100^oC) % 90 ± 1
Viscosity at 23°C mPa∙s 1,800 ± 500
Monomeric HDI % < 0.23
Hazen color value ≤ 40
NCO content % 17.8 ± 0.5

Downloads

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

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