- Coatings, paints & inks
Bayhydrol® U 2750
Aliphatic, hydroxyfunctional polycarbonate ester-polyurethane dispersion, cosolvent-free. Binder for the formulation of water-reducible 2K-PUR coatings.
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About
Product Types
- Dispersion
- PU dispersion - hydroxy-functional
- Waterbased dispersion
- PU dispersion
Material
- Coatings, paints & inks
- Hard, Thermally resistant, Waterborne, Flexible, Elastic, Weather resistant, High functional, Low viscous, Solvent-free, Easy mixing
General Characterization
Aliphatic, hydroxyfunctional polycarbonate ester-polyurethane dispersion, cosolvent-free.
Binder for the formulation of water-reducible 2K-PUR coatings.
Binder for the formulation of water-reducible 2K-PUR coatings.
Storage Conditions
- Storage in original sealed Covestro containers.
- Recommended storage temperature: 5 - 30 °C.
- Protect from frost, heat and foreign material.
General information: The product is sensitive to frost. Prologed freezin can damage the product irreversibly. Prolonged storage at higher temperatures may result in a decrease of viskosity and/or an increase of average particle size, possibly resulting in sedimentation of coagulation.
The viscosity of the product is largely governed by the pH. As the pH may decrease during storage, a decrease in viscosity is also to e expected. The viscosity can be restored to its original value by the addition of small amounts of an aqueous 10 % solution of dimethyl ethanol amine.
Contamination with certain bacteria, fungi or algae may render the product unusable.
- Recommended storage temperature: 5 - 30 °C.
- Protect from frost, heat and foreign material.
General information: The product is sensitive to frost. Prologed freezin can damage the product irreversibly. Prolonged storage at higher temperatures may result in a decrease of viskosity and/or an increase of average particle size, possibly resulting in sedimentation of coagulation.
The viscosity of the product is largely governed by the pH. As the pH may decrease during storage, a decrease in viscosity is also to e expected. The viscosity can be restored to its original value by the addition of small amounts of an aqueous 10 % solution of dimethyl ethanol amine.
Contamination with certain bacteria, fungi or algae may render the product unusable.
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 | g/ml | approx. 1.06 |
| Acid number (solid resin) | DIN EN ISO 2114 | mg KOH/g | 25.0 - 29.0 |
| OH content (solid resin) | % | approx. 3.6 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| pH supply form | DIN ISO 976 | 7.0 - 9.0 | |
| Non-volatile content (1 g / 1 h / 125 °C) | DIN EN ISO 3251 | % | 39 - 43 |
| Viscosity at 23 °C, (D = 40 s^-1) | DIN EN ISO 3219/A.3 | mPa*s | 100 - 1,500 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
