Understanding and improving the water resistance of water-borne binders

 
Innovation in architectural coatings for exterior walls and wood applications is currently led by low VOC and durable solutions in order to tend to more sustainability. Water-borne acrylic is one of the preferred technology to reach this market's need. Among UV resistance, hardness and dirt pick up resistance, water resistance is one of the most challenging requirement to achieve. Indeed, exterior substrates are subjected to severe weather along there life, leading to whitening, blistering, surfactant leaching, etc. Based on the specifications of the paint formulators, ARKEMA has developed specific and complementary tests to characterize this property. Our teams have studied the link between our acrylic dispersion's compositions and their water resistance in order to optimize our new solutions.