Bayhydur® 2547
Hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI). Hardener for waterborne two-component polyurethane coatings.
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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).
Hardener for waterborne two-component polyurethane coatings.
Hardener for waterborne two-component polyurethane coatings.
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.
- 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 |
|---|---|---|---|
| Density at 20 °C | DIN EN ISO 2811 | g/ml | approx. 1.15 |
| Flash point | DIN EN 22 719 | °C | approx. 185 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| NCO content | M105-ISO 11909 | % | 22.5 ± 0.5 |
| Viscosity at 23 °C | M014-ISO 3219/A.3 | mPa*s | 570 - 730 |
| Monomeric HDI | M016-ISO 10283 | % | < 0.26 |
| Hazen color value | M017-EN 1557 | ≤ 80 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
