• Coatings

Bayhydrol® UH 2557

Aliphatic, fatty acid-modified, anionic polyurethane dispersion.Binder for the formulation of water-reducible coatings and sealers for wood and wood materials.

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Product Types

  • Dispersion
  • Non-reactive system
  • PU dispersion
  • PU dispersion - high molecular
  • Waterbased dispersion
  • Polyurethane


Elastic, Bio content, Solvent-free, Waterborne, Flexible

General Characterization

Bayhydrol UH 2557 is an aliphatic, fatty acid-modified, anionic polyurethane dispersion.
It is suitable as a binder for the formulation of water-reducible coatings and sealers for wood and wood materials.

Storage Conditions

Bayhydrol UH 2557 should be stored in tightly sealed original containers and protected from freezing, heat, and foreign materials. The product is sensitive to freezing. Prolonged freezing can damage the product irreversibly. Prolonged storage at higher temperatures may result in a decrease of viscosity and/or an increase of average particle size, possibly resulting in sedimentation or coagulation. Recommended storage temperature is > 0º-30ºC.


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Packaging Type

No data available

Technical Properties & Datasheets

Property Name Test Method Unit Value
Viscosity at 23^oC, D = approx. 100/s mPa∙s ≤ 100
Non-volatile content (1g/1h/125°C convection oven) % 34 - 36
pH (1 : 2.5 in demineralized water) 6.5 - 8.5

Property Name Test Method Unit Value
Mean particle size nm approx. 60
Density at 20^oC g/ml approx. 1.04


Technical Data Sheet
Safety Data Sheet
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