POLYMER-MODIFIED FIBER-CEMENT COMPOSITION
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United States of America Patent
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Sep 29, 2016
app pub date -
Mar 23, 2016
filing date -
Mar 23, 2015
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Abstract
A method for providing a polymer-modified fiber-cement composite by forming an aqueous composition including admixing an aqueous dispersion comprising a water dispersible ionomer and an ethylene elastomer, an ethylene dicarboxyl copolymer, an ethylene ester copolymer or a grafted copolymer, cement, cellulosic fibers, siliceous material, and water; forming a composite precursor by removal of at least some of the water; and curing/drying the composite precursor at a temperature at least 10° C. higher than the Tg of the polymer is provided. Polymer-modified fiber-cement composites formed by the method and articles therefrom are also provided.
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