Desmodur® NZ 300

Aliphatic polyisocyanate.

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Product Types

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General Characterization

Aliphatic polyisocyanate.
As the hardener component for lightfast 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.


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Packaging Type

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Technical Properties & Datasheets

Property Name Test Method Unit Value
Viscosity at 23 °C M014-ISO 3219/A.3 mPa*s 3,000 ± 750
Color value (Hazen) M017-EN 1557 ≤ 80
NCO content M105-ISO 11909 % 21.0 ± 0.5
Monomeric IPDI M106-ISO 10283 % < 0.15
Monomeric HDI M106-ISO 10283 % < 0.20

Property Name Test Method Unit Value
Viscosity at 25 °C DIN EN ISO 3219/A.3 mPa*s approx. 2,700
Equivalent weight approx. 200
Flash point DIN EN 22719 °C approx. 181
Density at 20 °C DIN EN ISO 2811 g/ml approx. 1.15


Technical Data Sheet
Safety Data Sheet
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