Desmodur® 44V20L
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关于
材料类型
- MDI
- 芳族聚异氰酸酯
材料
无可用数据
一般特征
Desmodur® 44V20L is a liquid, dark brown polymeric isocyanate based on diphenylmethane-4,4'-diisocyanate (MDI) with isomers and homologues of higher functionality. It is used in conjunction with polyols to produce polyurethane.
储存条件
Recommended storage temperature: + 10 to + 30 °C (in exceptional cases up to 50°C)
Storage stability (ex works): 6 months if stored in moisture-tight drums
Storage stability (ex works): 6 months if stored in moisture-tight drums
样品
Exposure to moisture must be prevented when taking product samples
包装类型
无可用数据
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 |
|---|---|---|---|
| Specific heat (cp) | kJ/kgK | approx. 1.51 | |
| Density 20 °C | DIN 51757 | g/cm³ | approx. 1.23 |
| Phenylisocyanate content | MDI-01-09 | ppm | max. 50 |
| Coefficient of thermal expansion | K-1 | 6.59 . 10-4 |
命名属性规范
| 属性名称 | 测试方法 | 单位 | 数值 |
|---|---|---|---|
| NCO content | MDI-01-01 | % by wt. | 30.5 - 32.5 |
| Viscosity 25 °C*) | MDI-01-02 | mPa*s | 160 - 240 |
| Acidity | MDI-01-03 | mg/kg | max. 200 |
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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