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Bayhydur® 401-70 MPA

Hydrophilically modified aliphatic polyisocyanate based on isophorone diisocyanate (IPDI).

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Material

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General Characterization

Hydrophilically modified aliphatic polyisocyanate based on isophorone diisocyanate (IPDI).
As the co-reactant for aqueous resins and as the hardener for chemically resistant and weather-stable coating systems.

Storage Conditions

- Storage in original sealed Covestro container.

- Recommended storage temperature: 0 - 30 °C.

- Protect from moisture, heat and foreign material.

General information: 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.

Sampling

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Packaging Type

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Flash point DIN 55 213/1 °C approx. 49
Equivalent weight approx. 440
Density at 20 °C DIN 53 217/3 g/cm3 approx. 1.09

Specifications

Property Name Test Method Unit Value
NCO content M105-ISO 11909 % 9.4 ± 0.5
Monomeric IPDI M106-ISO 10283 < 0.35
Non-volatile content (0.2 g / 60 min / 120 °C) M020-ISO 3251 % 70 ± 2
Viscosity at 23 °C, (D = 81,8 s^-1) M014-ISO 3219/A.3 mPa*s approx. 1,500
Color value (Hazen) M017-EN 1557 ≤ 60

Downloads

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

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