Bayhydur® 304
Hydrophilically modified, aliphatic HDI-polyisocyanate for waterborne polymer dispersions. Corresponds to the following sections of the U.S. FDA’s guidelines Title 21 CFR: Section 175.105 “Adhesives”.
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- Hydrophiles Polyisocyanat
Material
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Allgemeine Charakterisierung
Bayhydur 304 is a hydrophilically modified, aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
As the hardener/binder component for high-quality waterborne polymer dispersions and as an additive to improve the property level of waterborne coating and adhesive systems.
As the hardener/binder component for high-quality waterborne polymer dispersions and as an additive to improve the property level of waterborne coating and adhesive systems.
Lagerungsbedingungen
Bayhydur 304 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.
Probenahme
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Verpackungsart
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Technische Eigenschaften & Datenblätter
Genannte Eigenschaften Merkmale
| Name der Eigenschaft | Prüfverfahren | Einheit | Wert |
|---|---|---|---|
| Density | g/ml | approx. 1.16 | |
| Flash point | °C | 226 | |
| Equivalent weight | approx. 230 |
Genannte Eigenschaften Spezifikation
| Name der Eigenschaft | Prüfverfahren | Einheit | Wert |
|---|---|---|---|
| NCO content | % | 17.7 - 18.7 | |
| Hazen color value | ≤ 60 | ||
| Viscosity at 23^oC | mPa∙s | 2,500 - 5,500 | |
| Monomeric HDI | % | < 0.15 |
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Technisches Datenblatt
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