• Coatings, paints & inks

Bayhydrol® A 2809

OH-functional PAC combinable with aliphatic PIC for 2K PU for heavy transport finishing, industrial, plastic and wood coatings. With amino resins or BL-PIC for 1K industrial baking coatings.

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Product Types

  • Dispersion
  • Acrylate dispersion


Coatings, paints & inks
Flexible, Elastic, Hard, Waterborne

General Characterization

Water-reducible, hydroxyfunctional polyacrylic dispersion
In combination with aliphatic polyisocyanates to formulate aqueous two-component clear-, topcoats, primer and filler for heavy transport finishing, industrial coating, plastic and wood applications.
In combination with amino resins or blocked polyisocyanates for waterborne one-component industrial baking coatings.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: > 0 - 30 °C.

- Protect from frost, heat and foreign material.

General information: 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 be expected. The viscosity can be restored to its original value by the addition of small amounts of an aqueous 10 % solution of dimethylethanolamine. 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. Contamination with certain bacteria, fungi or algae may render the product unusable.


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Packaging Type

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Technical Properties & Datasheets


Property Name Test Method Unit Value
OH content (calculated on solid resin) % approx. 3.3
Acid value (supply form) DIN EN ISO 2114 mg KOH/g approx. 12
Density at 20 °C DIN EN ISO 2811-2 g/ml approx. 1.07


Property Name Test Method Unit Value
pH-value (supply form) DIN ISO 976 8 - 9
Viscosity at 23 °C, D = approx. 40 s^-1 DIN EN ISO 3219/A.3 mPa*s ≤ 2,500
Non-volatile content (1g/1h/125 °C/convection oven) DIN EN ISO 3251 % 45 - 49


Technical Data Sheet
Safety Data Sheet
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