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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About
Product Types
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Material
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General Characterization
Desmophen 670 is a slightly branched, hydroxyl-bearing polyester.
Desmophen 670 is suitable for use a co-reactant, usually with Desmodur® N 75A and Desmodur® N 3390A, in the formulation of flexible, weather-stable coatings.
Desmophen 670 is suitable for use a co-reactant, usually with Desmodur® N 75A and Desmodur® N 3390A, in the formulation of flexible, weather-stable coatings.
Storage Conditions
Desmophen 670 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
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Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Pour point | °C | approx. 8 | |
| Flash point | °C | approx. 195 | |
| Density at 20°C | g/ml | approx. 1.17 | |
| Equivalent weight | approx. 395 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Hazen color value | ≤ 150 | ||
| Hydroxyl content | % | 4.3 ± 0.4 | |
| Viscosity at 23°C80% in butyl acetate | mPa∙s | 2,200 ± 400 | |
| Acid value | mg KOH/g | 2 ± 1 | |
| Water content | % | ≤ 0.1 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
