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Desmodur® N 3500

Aliphatic polyisocyanate (HDI allophanate trimer). As the hardener component for solvent-free, lightfast, scratch-resistant polyurethane coating systems.

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General Characterization

Aliphatic polyisocyanate (HDI allophanate trimer).
As the hardener component for solvent-free, lightfast, scratch-resistant polyurethane 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

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Packaging Type

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Equivalent weight approx. 215
Density at 20 °C DIN 51 757 g/cm3 approx. 1.17
Viscosity at 50 °C M014-ISO 3219/A.3 mPa*s approx. 4,200
Flash point DIN EN ISO 13736 °C 208

Specifications

Property Name Test Method Unit Value
Viscosity at 23 °C M014-ISO 3219/A.3 mPa*s approx. 35,000
Monomeric HDI M106-ISO 10283 % < 0.25
NCO-content M105-ISO 11909 % approx. 19.5
Color value (Hazen) M017-EN 1557 ≤ 100

Downloads

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

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