FLAME RETARDANT THERMOPLASTIC COMPOSITE
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United States of America Patent
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Issued Date -
Jan 10, 2013
app pub date -
Jun 25, 2012
filing date -
Jun 24, 2011
priority date (Note) -
Abandoned
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Abstract
An extruded structural article is disclosed. The article has a cap layer comprising a flame retardant thermoplastic urethane material. The flame retardant thermoplastic urethane material is a blend of a thermoplastic urethane and a flame retardant polymer, such as a halogenated polymer. The thermoplastic urethane material is cross-linked using cross-linking agents such as radical initiators to improve strength, weather resistance, and resistance to scratching, abrasion, or marring. The flame retardant thermoplastic urethane is typically blended in a first extrusion with minimal cross-linking, and then applied to a structural article during a second extrusion in which the cross-linking reaction is activated.
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