Base-mediated hydrophobing compositions and processes
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United States of America Patent
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Jan 30, 2018
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Dec 17, 2013
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Dec 20, 2012
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Abstract
Water-resistant gypsum boards and compositions and methods for their manufacture are provided. The methods include forming a mixture of water, hydroxide, and siliconate, adding siloxane to the mixture, adding calcium sulfate hemi-hydrate to the mixture to form an aqueous slurry, curing the aqueous slurry under heat, drying the aqueous slurry, and forming a water-resistant gypsum board.
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