FIRE RESISTANT COATING AND WOOD PRODUCTS
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
May 21, 2014
filing date -
Jul 17, 2013
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Abstract
A fire-resistant coating for a wood product which includes a polyurethane matrix. The polyurethane matrix includes an aromatic isocyanate which is present in a quantity ranging from 20% to 50% by weight of the formulation, castor oil which is present in a quantity ranging from 10% to 60% by weight of the formulation, intumescent particles, and a fire retardant present in a quantity ranging from 1% to 40% by weight of the formulation. The fire retardant is selected from the group consisting of disodium ocataborate tetrahydrate, Colemanite (CaB3O4(OH)3.H2O), Ulexite (NaCaB5O6(OH)6.5(H2O)), Aluminum trihydrate, Magnesium hydroxide (Mg(OH)2), Hydromagnesite (Mg5(CO3)4(OH)2.4H2O), and Hunitite (Mg3Ca(CO3)4). Fire-resistant wood products incorporating the fire-resistant coating are also described.
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