Methods of conferring fire retardancy to wood and fire-retardant wood products
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United States of America Patent
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Jun 6, 2017
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app pub date -
Jul 10, 2014
filing date -
Jun 4, 2014
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Abstract
A process is provided for treating wood products including lumber, plywood and other engineered wood products comprising the steps of applying an aqueous fire-retardant impregnate and applying a coating to the surface of the wood product. In one embodiment, said process confers fire-retardant properties to the wood products sufficient to pass the extended burn test of ASTM E-84. The present invention also provides fire retardant wood products.
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