FLAME-RETARDANT POLYURETHANE MATERIALS
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United States of America Patent
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Aug 10, 2017
app pub date -
Feb 8, 2016
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Feb 8, 2016
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In an example, a process of forming a flame-retardant polyurethane material includes chemically reacting a polyisocyanate (that includes at least three isocyanate groups) with a phosphonate that includes at least one hydroxyl group to form a polyisocyanate-phosphonate compound. The process also includes forming a mixture that includes the polyisocyanate-phosphonate compound and a polyol. The process further includes polymerizing the mixture to form a flame-retardant polyurethane material.
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