Bayhydur® ultra 2858
Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI)
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About
Product Types
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Material
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General Characterization
Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI).
As a ready-to-use hardener for waterborne two-component polyurethane systems.
As a ready-to-use hardener for waterborne two-component polyurethane 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 an increase of color and viscosity.
- 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 an increase of color and viscosity.
Sampling
No data available
Packaging Type
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Density | DIN EN ISO 2811 | g/cm3 | approx. 1.13 |
| Equivalent weight | approx. 316 | ||
| Flash point | DIN EN ISO 2719 | °C | approx. 88 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Monomeric HDI content | M106-ISO 10283 | % | < 0.06 |
| Color value (Hazen) | M017-EN 1557 | < 80 | |
| Viscosity at 23 °C | M014-ISO 3219/A.3 | mPa*s | approx. 500 |
| NCO content | M105-ISO 11909 | % | approx. 13.3 |
| Monomeric IPDI content | M106-ISO 10283 | % | < 0.05 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
