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Desmocoll® 621/2

Predominantly linear, flexible hydroxyl polyurethane with a high crystallisation rate and low thermoplasticity. Good adhesion on PVC substrates. Suitable to formulate adhesives with a long tack life.

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材料类型

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材料

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一般特征

Desmocoll 621/2 is a predominantly linear hydroxyl polyurethane.
Desmocoll 621/2 is a flexible polyurethane with a high rate of crystallization and low thermoplasticity. It has good adhesion on many flexible PVC substrates. Desmocoll 621/2 is characterized in particular by its long tack live after thermal activation.

储存条件

Desmocoll 621/2 should be stored in tightly sealed original containers and protected from direct sunlight, moisture, heat, and foreign materials. Recommended storage temperature is 10º-25ºC.

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包装类型

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技术属性和数据表

属性名称 测试方法 单位 数值
Solution viscosity , 15% inbutanone-2 (MEK)at 23oC, Haake mPa∙s 2,100 - 3,100

属性名称 测试方法 单位 数值
Density g/ml approx. 1.2
Crystallization h approx. 2
Heat resistance °C approx. 70
Hydroxyl content % < 0.1
Bondability of materials containing plasticizers Very good
Minimum activation temperature °C approx. 55
Hot tack life min. approx. 8

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技术数据表
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