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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
Weather resistant, Solventborne, Flexible, Elastic

General Characterization

Slightly branched hydroxyl-bearing polyester.
As a co-reactant primarily with Desmodur® N 75 and ultra N 3390 in the formulation of weather-stable flexible 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
Density at 20°C DIN EN ISO 2811-2 g/ml approx. 1.11
Flash point DIN EN ISO 2719 °C approx. 32
Equivalent weight approx. 485

Specifications

Property Name Test Method Unit Value
Acid value DIN EN ISO 2114 mg KOH/g 1.8 ± 1
Hazen color value DIN EN 1557 ≤ 150
Water content DIN 51 777/1 % ≤ 0.1
Non-volatile content 1 g resin/1 h 125 °C, convection oven DIN EN ISO 3251 % 80 ± 1
Viscosity at 23°C DIN EN ISO 3219/A.3 mPa*s 3,000 ± 400
Hydroxyl content DIN EN ISO 4629-2 % 3.5 ± 0.3

Downloads

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

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