Bayhydur® ultra 2655

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材料类型

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材料

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一般特征

Bayhydur ultra 2655 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
It is suitable as a hardener for waterborne two-component polyurethane systems.

储存条件

Bayhydur ultra 2655 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.

样品

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包装类型

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技术属性和数据表

命名属性特征

属性名称 测试方法 单位 数值
NCO content % 20.3 - 21.3
Monomeric HDI % < 0.10
Hazen color value < 60
Viscosity at 23°C mPa∙s 2,500 - 4,500

命名属性规范

属性名称 测试方法 单位 数值
Flash point °C approx. 192
Density g/cm^3 approx. 1.16

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