Composite building material and method for making composite building material
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United States of America Patent
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N/A
Issued Date -
Aug 14, 2008
app pub date -
Jan 30, 2008
filing date -
Jan 31, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A composite building material and a method for its manufacture are provided. The method comprises the steps of: providing a foamable mixture comprising a polymeric matrix material, a filler, a processing aid, one or more lubricants, a thermal stabilizer, and a blowing agent; foaming said foamable mixture to form a foamed composite substrate; optionally embossing the substrate; and coating the substrate with a polyurethane/acrylic coating to form the composite building material, wherein the polyurethane/acrylic coating is keyed chemically and/or physically to the foamed composite substrate.
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