Bayhydur® BL 2781
Bayhydur BL 2781 is a water-thinnable, aliphatic, blocked polyisocyanate. It is suitable for use in combination with Bayhydrol® polyols in the formulation of water-thinnable, lightfast, one-component polyurethane stoving coatings. Also as an additive to improve the flexibility, impact strength and adhesion of conventional aqueous stoving systems. Bayhydur BL 2781 is a further development of Bayhydur VP LS 2310 without cosolvent.
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About
Product Types
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Material
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General Characterization
Bayhydur BL 2781 is a water-thinnable, aliphatic, blocked polyisocyanate.
It is suitable for use in combination with Bayhydrol® polyols in the formulation of water-thinnable, lightfast, one-component polyurethane stoving coatings. Also as an additive to improve the flexibility, impact strength and adhesion of conventional aqueous stoving systems.
Bayhydur BL 2781 is a further development of Bayhydur VP LS 2310 without cosolvent.
It is suitable for use in combination with Bayhydrol® polyols in the formulation of water-thinnable, lightfast, one-component polyurethane stoving coatings. Also as an additive to improve the flexibility, impact strength and adhesion of conventional aqueous stoving systems.
Bayhydur BL 2781 is a further development of Bayhydur VP LS 2310 without cosolvent.
Storage Conditions
Bayhydur BL 2781 should be stored in tightly sealed original containers and protected from freezing, heat, and foreign materials. The product is sensitive to freezing. Prolonged freezing can damage the product irreversibly. Prolonged storage at higher temperatures may result in a decrease of viscosity and/or an increase of average particle size, possibly resulting in sedimentation or coagulation. Recommended storage temperature is 5º-23ºC.
Sampling
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Technical Properties & Datasheets
Characteristics
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| Equivalent weight | approx. 1,200 | ||
| Density at 20^oC | g/cm^3 | approx. 1.06 | |
| Appearance | clear to slightly cloudy | ||
| Blocked NCO content | % | approx. 3.5 |
Specifications
| Property Name | Test Method | Unit | Value |
|---|---|---|---|
| pH (10% solid content indemineralized water, 20^oC) | approx. 9 | ||
| Non-volatile content (1 g/1 h/105^oC) | % | 35 - 38 | |
| Viscosity at 23^oC, D=10s^-1 | mPa∙s | 1500 - 5000 |
Downloads
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Technical Data Sheet
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Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
