Bayhydur® ultra 305
Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). As a hardener for aqueous two-component polyurethane systems.
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About
Product Types
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Material
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General Characterization
Bayhydur ultra 305 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
It is suitable as a hardener for aqueous two-component polyurethane systems.
It is suitable as a hardener for aqueous two-component polyurethane systems.
Storage Conditions
Bayhydur ultra 305 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 highertemperatures will result in increase of color and viscosity. Recommended storage temperature is 0º-30ºC.
Sampling
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Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Equivalent weight | approx. 260 | ||
| Density | g/cm^3 | approx. 1.16 | |
| Flash point | °C | approx. 230 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Viscosity at 23^oC | mPa∙s | 5,000 - 8,000 | |
| NCO content | % | 15.8 - 16.6 | |
| Color value (Hazen) | ≤ 150 | ||
| Monomeric HDI | % | < 0.10 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
