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关于
材料类型
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材料
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一般特征
Bayhydrol A 2770 is an aqueous hydroxyl-functional polyacrylic dispersion, in combination with aliphatic polyisocyanates for waterborne two-component polyurethane coatings.
储存条件
Bayhydrol A 2770 should be stored in tightly sealed original containers and protected from freezing, heat, and foreign materials. Short-time cooling down to -18°C does not typically damage the product. 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. The viscosity of the product is largely governed by the pH. As the pH may decrease during storage, a decrease in viscosity is also to be expected. The viscosity can be adjusted to its original value by the addition of small amounts of an aqueous 10% solution of dimethyl ethanol amine. Recommended storage temperature is greater than 0ºC-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 |
|---|---|---|---|
| Hydroxyl content (on solid resin, calculated) | % | approx. 3.9 | |
| Density at 20°C | g/ml | approx. 1.06 | |
| Acid value | mg KOH/g | approx. 11.0 |
命名属性规范
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| Viscosity at 23°C(D = approx. 40 s^-1) | mPa∙s | ≤ 1,200 | |
| Non-volatile content (1g/1h/125°C,circulating air oven) | % | 42 - 46 | |
| pH (supply form) | 7.0 - 9.0 |
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技术数据表
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安全数据表无可用直接下载，请访问 www.productsafetyfirst.covestro.com
