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  • Coatings

Bayhydrol® U 2750

Aliphatic, hydroxyfunctional polycarbonate ester-polyurethane dispersion. Binder for the formulation of water-reducible 2K-PUR coatings.

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About

Product Types

  • Dispersion
  • PU dispersion
  • PU dispersion - hydroxy-functional
  • Waterbased dispersion

Material

Coatings
Easy mixing, Hard, Thermally resistant, High functional, Low viscous, Solvent-free, Weather resistant, Waterborne, Flexible, Elastic

General Characterization

Aliphatic, hydroxyfunctional polycarbonate ester-polyurethane dispersion.
Binder for the formulation of water-reducible 2K-PUR coatings.

Storage Conditions

- Storage in original sealed Covestro containers.

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Recommended storage temperature: 5 - 30 °C.

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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

Property Name Test Method Unit Value
Non-volatile content (1 g / 1 h / 125 °C) DIN EN ISO 3251 % 39 - 43
Viscosity at 23 °C, (D = 40 s-1) DIN 53019 mPa*s 100 - 1,500
pH 10 % DIN ISO 976 7.0 - 9.0

Property Name Test Method Unit Value
OH content (solid resin) % approx. 3.6
Acid number (solid resin) DIN EN ISO 2114 mg KOH/g 25.0 - 29.0
Density at 20 °C DIN EN ISO 2811 g/ml approx. 1.06

Downloads

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