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Bayhydur® ultra 302

Bayhydur 302 is a water-dispersible polyisocyanate based on hexamethylene diisocyanate (HDI).

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General Characterization

Bayhydur ultra 302 is a solvent-free, water-dispersible polyisocyanate based on hexamethylene diisocyanate (HDI).

Storage Conditions

Bayhydur ultra 302 should be stored in tightly sealed original containers and protected from moisture, heat, and foreign materials. Processability of this product can be adversely affected by contamination.
Recommended storage temperature is at room temperature (approximately 77°F/25°C).
The product is sensitive to moisture. Storage at higher temperatures will result in increase of color and viscosity. Due to the raw materials, the product may show visible turbidity caused by the cold. This turbidity occurs at approx. + 5 °C and is reversible when heated to room temperature. The product properties are not affected.

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Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
Specific gravity at 25℃ 1.16
Appearance Pale, yellow liquid
Solids % min. 99.8
Flash point (Setaflash) DIN EN 22719 °C 235
Equivalent weight avg. 243
Weight per gallon Ib. 9.63

Specifications

Property Name Test Method Unit Value
Viscosity at 25°C M014 - ISO 3219/A.3 mPa*s 2300 ± 700
Monomeric isocynate M106-ISO 10283 % < 0.1
NCO content M105 - ISO 11909 % 17.3 ± 0.5
Hazen color value M017-EN 1557 max. 100

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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