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  • Coatings, paints & inks

Desmophen® 670 BA

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

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About

Product Types

  • Polyester resin

Material

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

General Characterization

Desmophen 670 BA is a slightly branched, hydroxyl-bearing polyester.
It is suitable as a co-reactant primarily with Desmodur® N 75A and N 3390A BA/SN in the formulation of weather-stable flexible coatings.

Storage Conditions

Desmophen 670 BA should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. 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. Recommended storage temperature is less than 30ºC.

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Flash point °C approx. 32
Density at 20°C g/ml approx. 1.11
Equivalent weight approx. 485

Specifications

Property Name Test Method Unit Value
Water content % ≤ 0.1
Viscosity at 23°C mPa∙s 3,000 ± 400
Acid value mg KOH/g 1.8 ± 1
Hydroxyl content % 3.5 ± 0.3
Non-volatile content 1 g resin / 1h/125°C, convection oven) % 80 ± 1
Hazen color value ≤ 150

Downloads

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

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