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  • Coatings

Desmodur® N 3900

Low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate.As the hardener for weather-stable coating systems.

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About

Product Types

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

Material

Coatings
Easy mixing, Low viscous, Solventborne, Solvent-free, Weather resistant, Waterborne

General Characterization

Low-viscosity, aliphatic polyisocyanate resin based on hexamethylene diisocyanate.
As the hardener for 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.

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
Hazen color value M017-EN 1557 ≤ 40
NCO content M105-ISO 11909 % by wt. 23.5 ± 0.5
Monomeric HDI M106-ISO 10283 % < 0.25
Viscosity at 23 °C M014-ISO 3219/A.3 mPa*s 730 ± 100

Property Name Test Method Unit Value
Equivalent weight approx. 179
Flash point DIN EN 22 719 °C approx. 203
Density DIN EN ISO 2811 g/cm3 approx. 1.15

Downloads

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

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