• Coatings

Desmodur® VL 51

Aromatic polyisocyanate based on diphenylmethane diisocyanate.

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Product Types

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Flexible, Elastic

General Characterization

Aromatic polyisocyanate based on diphenylmethane diisocyanate.
As a raw material in the formulation of self-levelling two-component polyurethane coatings and sealing compounds as well as solvent-free two-component polyurethane primers. Also as a component in the formulation of prepolymers.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: 10 - 30 °C.

- Protect from moisture, heat and foreign material.

General information: The product is sensitive to moisture and should therefore be stored in its sealed original containers. Storage at higher temperatures may result in an increase in viscosity and at lower temperatures in the formation of crystalline deposits.


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Packaging Type

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Technical Properties & Datasheets

Property Name Test Method Unit Value
NCO MDI-01-01 % 32.5 ± 0.8
Viscosity at 25 °C MDI-01-02 mPa*s 21.0 ± 5
Acidity (HCI) MDI-01-03 mg/kg ≤ 200

Property Name Test Method Unit Value
Equivalent weight approx. 129
Flash point DIN EN ISO 2719 °C approx. 190
Density at 20°C DIN EN ISO 2811-3 g/ml approx. 1.22


Technical Data Sheet
Safety Data Sheet
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