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This company, a division of J.M. Huber Corp., now offers Hydral® Coat 2 ultrafine alumina trihydrate (ATH) for use in coil coatings and other high-performance coating-related applications. In coatings applications with low film thicknesses, extenders are not commonly used because they can adversely affect gloss and/or performance properties. An analysis was conducted to compare high-gloss white and black coil coatings without extenders vs. the same coatings extended with Hydral Coat 2 Ultrafine ATH. The coatings reportedly delivered the same performance, including 2,000 hours of QUV weathering.
In addition to a partial replacement of titanium dioxide (TiO2), the alumina trihydrate replaced a portion of resin content. The result was reportedly a lower cost per gallon without any adverse impact on aesthetics, flexibility or durability. In the black, high-gloss coil coating formulation, a ladder study ranged from 1.5% PVC to 10% PVC without a loss in jetness or gloss.
For more information, visit www.hubermaterials.com.