Applications
With Desmodur® L as the reaction partner, Desmophen® 800 yields hard films with good chemical resistance. These coatings are also characterized by high impact resistance, toughness and abrasion resistance. As a combination polyol with Desmophen® 1100, Desmophen® 800 can be used to formulate floor coatings with high abrasion resistance.
Form supplied
High viscosity resin
Specification
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Hazen color value | ≤ 250 | DIN EN 1557 | ||
| Acid value | ≤ 4 | mg KOH/g | DIN EN ISO 2114 | |
| Viscosity at 23 °C, | 70 % in 1-methoxypropylacetate-2 | 850 ± 150 | mPa*s | DIN EN ISO 3219/A.3 |
| Hydroxyl content | 8,6 ± 0,3 | % | DIN EN ISO 4629-2 | |
| Water content | ≤ 0,1 | % | DIN 51 777/1 |
Typical Values
| Property | Test Condition | Value | Unit | Standard |
|---|---|---|---|---|
| Equivalent weight | approx. 200 | |||
| Density at 20 °C | approx. 1,18 | g/ml | DIN EN ISO 2811-2 | |
| Flash point | approx. 150 | °C | DIN EN ISO 2719 | |
| Pour point | approx. + 11 | °C | DIN ISO 3016 |
Solubility / thinnability
Generally speaking, Desmophen® 800 has good compatibility with esters, ether esters, ketones and aromatics. However, the solutions formed must be tested for their storage stability.Prolonged storage of a solution with low binder content may result in turbidity and sedimentation.Only PU grade solvents should be used (< 0.05 % water, free from other reactive impurities).
Compatibility
Generally speaking, Desmophen® 800 is compatible with most polyester and polyether Desmophen® grades and with Desmodur® HL, IL, L and N 75.The compatibility should nevertheless be tested.
Storage
- Storage in original sealed Covestro container. - Recommended storage temperature: max. 30 °C. - Protect from moisture, heat and foreign material. General information: The product is slightly hygroscopic.
Storage time
Covestro represents that, for a period of twelve months following the day of shipment as stated in the respective transport documents, the product will meet the specifications or values set forth in section "specifications or characteristic data" above, what ever is applicable, provided that the product is stored in full compliance with the storage conditions set forth in and referenced under section "storage" above and is otherwise handled appropriately.The lapse of the twelve months period does not necessarily mean that the product no longer meets specifications or the set values. However, prior to using said product, Covestro recommends to test such a product if it still meets the specifications or the set values. Covestro does not make any representation regarding the product after the lapse of the twelve months period and Covestro shall not be responsible or liable in any way for the product failing to meet specifications or the set values after the lapse of the twelve months period.
