BUILDING MATERIAL AND METHOD FOR PRODUCING THE SAME
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United States of America Patent
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Dec 17, 2015
app pub date -
Mar 4, 2015
filing date -
Jun 16, 2014
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Abstract
The invention relates to a highly durable building material and a method for producing the same. The building material prevents the substrate or an intermediate resin layer from being decomposed by photoradicals that may be generated from zinc oxide. Provided is a building material in which an ultraviolet protection layer containing zinc oxide particles and silica particles is formed directly on the surface of a substrate or indirectly with an intermediate resin layer interposed between the substrate and the ultraviolet protection layer. The silica particles are fixed to the substrate or the intermediate resin layer.
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