Gypsum products utilizing a two-repeating unit dispersant and a method for making them
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United States of America Patent
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Issued Date -
Dec 14, 2006
app pub date -
Jun 14, 2005
filing date -
Jun 14, 2005
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Abstract
A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and the second repeating unit is a vinyl or allyl group bound to a polyether by an ether linkage. The slurry can be made into a gypsum panel.
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