• Coatings

Bayhydur® XP 2547

Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).Hardener for near zero VOC waterborne 2K polyurethane coatings.

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Product Types

  • PIC
  • Hydrophilic polyisocyanate
  • Isocyanate
  • Polyisocyanurate
  • Polyisocyanate
  • Crosslinkers
  • Hardeners
  • Aliphatic polyisocyanate


Easy mixing, Solvent-free, Weather resistant, Waterborne

General Characterization

Bayhydur XP 2547 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
It is suitable as a hardener for waterborne two-component coatings, top coats, sealers and as an additive to enhance the property profile.

Storage Conditions

Bayhydur XP 2547 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. Hydrophilic isocyanates are very moisture-sensitive and react with water to form carbon dioxide and insoluble ureas. The containers must always be kept tightly closed. The access of water in all forms (moist air, solvents, moist containers) must be prevented, because the generation of carbon dioxide can lead to dangerous increases in pressure. Storage at higher temperatures will result in increase of color and viscosity. Recommended storage temperature is 0º-30ºC.


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Packaging Type

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Technical Properties & Datasheets

Property Name Test Method Unit Value
Viscosity at 23°C mPa∙s 570 - 730
Monomeric HDI % < 0.5
NCO content % 22 - 23
Hazen color value ≤ 150

Property Name Test Method Unit Value
Flash point °C approx. 185
Density at 20°C g/ml approx. 1.15


Technical Data Sheet
Safety Data Sheet
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