Gypsum wood fiber articles and methods of making same
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United States of America Patent
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Nov 22, 2011
Grant Date -
Jun 17, 2010
app pub date -
Feb 24, 2010
filing date -
Dec 20, 2002
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Expired
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Abstract
Emulsions are provided which are useful in imparting water-resistance to gypsum wood fiber products. In one embodiment, the emulsions comprise a wax or a combination of waxes, an alkyl phenol, at least one surfactant, Polynaphthalenesulfonic acid, and an alkali metal hydroxide. In another embodiment, the emulsions comprise a wax or a combination of waxes, an alkyl phenol, at least one surfactant, polynaphthalenesulfonic acid, an alkali metal hydroxide, and a complexed starch.
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