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Bayhydrol® A 2770

Bayhydrol A XP 2770 is an aqueous hydroxyl-functional polyacrylic dispersion, in combination with aliphatic polyisocyanates for waterborne two-component polyurethane coatings.

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General Characterization

Bayhydrol A 2770 is an aqueous hydroxyl-functional polyacrylic dispersion, in combination with aliphatic polyisocyanates for waterborne two-component polyurethane coatings.

Storage Conditions

Bayhydrol A 2770 should be stored in tightly sealed original containers and protected from freezing, heat, and foreign materials. Short-time cooling down to -18°C does not typically damage the product. 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. 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 adjusted to its original value by the addition of small amounts of an aqueous 10% solution of dimethyl ethanol amine. Recommended storage temperature is greater than 0ºC-30ºC.

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Acid value mg KOH/g approx. 11.0
Density at 20°C g/ml approx. 1.06
Hydroxyl content (on solid resin, calculated) % approx. 3.9

Specifications

Property Name Test Method Unit Value
pH (supply form) 7.0 - 9.0
Viscosity at 23°C(D = approx. 40 s^-1) mPa∙s ≤ 1,200
Non-volatile content (1g/1h/125°C,circulating air oven) % 42 - 46

Downloads

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

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