Bayhydrol® A 242 

Bayhydrol® A 242 is a water-thinnable polyacrylic resin containing hydroxyl groups. It is used as a coreactant for Bayhydur® and Desmodur® polyisocyanates in the formulation of aqueous two-component polyurethane systems for various applications by brush, roller or spray. This product has a viscosity at 23°C, (D = approx. 165 s-1) of 200 ± 100, a non-volatile content (1g, 1h, 125°C) of 42 ± 2, and a pH (10% in demineralized water) value of 7.1 ± 0.7.

Bayhydrol® A 242 is a water-thinnable hydroxyfunctional polyacrylic resin with emulsifying properties. It is neutralised with ammonia. Given the special composition of this product, both hydrophilic polyisocyanates, e.g. Bayhydur® 3100, and hydrophobic grades, such as Desmodur® N 3400 and others, are suitable co-reactants. The resultant water-thinnable two-component system cures to yield a polyurethane film with good general properties, and only a small-scale polyurea reaction takes place.

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拜耳材料生產膠黏劑原料,用於制備交通、家具、鞋、包裝和建築市場用觸敏和熱活化膠黏劑,反應性和熱熔膠粘劑。拜耳提供基於聚氨酯和氯丁橡膠的全面產品系列,包括能夠提供耐紫外線和耐候性的特種原材料。

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