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  • Coatings

Desmophen® 680 BA

Branched OH-bearing PES combinable with Desmodur® N for 2K PU with good gloss retention, lightfastness and chalking resistance. In combination with Desmodur® L and HL for fast-drying 2K PU.

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About

Product Types

  • Polyester resin

Material

Coatings
Hard, Solventborne, Weather resistant

General Characterization

Desmophen 680 BA is a branched hydroxyl-bearing polyester.
It is suitable as a co-reactant for Desmodur® N in the formulation of two-component polyurethane coatings with good gloss retention, lightfastness and chalking resistance.
it is also suitable for use in combination with Desmodur L/ultra L and HL in the formulation of fast-drying two-component coatings.

Storage Conditions

Desmophen 680 BA should be stored in tightly sealed containers and protected from moisture, heat and foreign materials. Recommended storage temperature is less than 30°C.

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s 3,000 ± 500
Hazen color value ≤ 200
Non-volatile content (2g resin/2ml toluene/1h/125°C, convection oven) % 70 ± 1
Hydroxyl content % 2.2 ± 0.5
Water content % ≤ 0.1
Acid value mg KOH/g 16 ± 3

Property Name Test Method Unit Value
Equivalent weight approx. 770
Flash point °C approx. 32
Density at 20°C g/ml approx. 1.08

Downloads

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