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BUILDING ASSEMBLY INCLUDING A WEATHER RESISTANT BARRIER, A SHEET FOR USE AS A WEATHER RESISTANT BARRIER, A LIQUID COATING COMPOSITION AND METHODS OF MAKING THE FOREGOING
BUILDING ASSEMBLY INCLUDING A WEATHER RESISTANT BARRIER, A SHEET FOR USE AS A WEATHER RESISTANT BARRIER, A LIQUID COATING COMPOSITION AND METHODS OF MAKING THE FOREGOING
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机译:建筑组件,包括耐候性阻挡层,用作耐候性阻挡层的板,液体涂料组合物和上述方法
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摘要
A weather resistive barrier (WRB) for the exterior protection of building substrates can have a water vapor permeability that decreases with increasing temperature. In an embodiment, the WRB includes a coating comprising a LCST polymer, and may further include a second polymer. The WRB can be part of a building assembly, part of a sheet, or a sheet itself, the sheet having an air permeability of less than 0.02 L/(s m2) at a pressure of 75 Pa. Furthermore a liquid coating composition can include a LCST polymer and a second polymer, wherein the liquid coating composition can be adapted that a solid coating formed by the liquid coating composition has an air permeability of less than 0.02 L/(s m2) at a pressure of 75 Pa and a water vapor permeability that decreases with increasing temperature.
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机译:用于建筑基材外部保护的耐候性屏障(WRB)的水蒸气渗透性会随温度升高而降低。在一个实施方案中,WRB包括包含LCST聚合物的涂层,并且可以进一步包含第二聚合物。 WRB可以是建筑组件的一部分,也可以是板材的一部分,也可以是板材本身,板材在75 Pa的压力下透气率小于0.02 L /(s m2)。此外,液体涂料组合物可以包括LCST聚合物和第二聚合物,其中所述液体涂料组合物可以适于由所述液体涂料组合物形成的固体涂料在75Pa的压力下具有小于0.02L /(s·m 2)的透气率和水蒸气渗透性随温度升高而降低。
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