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  • Coatings, paints & inks

Desmophen® 670

Slightly branched, hydroxyl-bearing polyester.As a co-reactant, usually with Desmodur® N 75 and Desmodur® N 3390, in the formulation of flexible, weather-stable coatings.

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Product Types

  • Polyester resin

Material

Coatings, paints & inks
Weather resistant, Solventborne, Flexible, Elastic

General Characterization

Slightly branched, hydroxyl-bearing polyester.
As a co-reactant, usually with Desmodur® N 75 and Desmodur® N 3390, in the formulation of flexible, weather-stable coatings.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: max. 30 °C.

- Protect from moisture, heat and foreign material.

General information: Under certain conditions (temperatures below 15 °C, long storage) the product may become cloudy. It can be completely rehomogenized by heating to around 40 °C or adding solvent, and can be further processed without any loss of quality.

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Equivalent weight approx. 395
Pour point DIN ISO 3016 °C approx. + 8
Density at 20 °C DIN EN ISO 2811-1 g/ml approx. 1.17
Flash point DIN EN ISO 2719 °C approx. 195

Specifications

Property Name Test Method Unit Value
Hydroxyl content DIN EN ISO 4629-2 % 4.3 ± 0.4
Acid value DIN EN ISO 2114 mg KOH/g 2 ± 1
Water content DIN 51 777/1 % ≤ 0.1
Viscosity at 23 °C, 80 % in butyl acetate DIN EN ISO 3219/A.3 mPa*s 2,200 ± 400
Hazen color value DIN EN 1557 ≤ 150

Downloads

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

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