Bayhydur® ultra 305

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材料类型

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材料

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一般特征

Bayhydur ultra 305 is a hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI).
It is suitable as a hardener for aqueous two-component polyurethane systems.

储存条件

Bayhydur ultra 305 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 highertemperatures 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
Monomeric HDI % < 0.10
NCO content % 15.8 - 16.6
Viscosity at 23^oC mPa∙s 5,000 - 8,000
Color value (Hazen) ≤ 150

命名属性规范

属性名称 测试方法 单位 数值
Density g/cm^3 approx. 1.16
Equivalent weight approx. 260
Flash point °C approx. 230

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