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Bayhydur® HD 2018

Bayhydur HD 2018 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). It is suitable as a hardener for near zero VOC waterborne two-component polyurethane coatings.

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Material

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General Characterization

Bayhydur HD 2018 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
It is suitable as a hardener for near zero VOC waterborne two-component polyurethane coatings.

Storage Conditions

Bayhydur HD 2018 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.

Sampling

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Technical Properties & Datasheets

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

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

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