LOW-DENSITY FILLED POLYURETHANE FOAM
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United States of America Patent
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Issued Date -
Apr 29, 2010
app pub date -
Oct 28, 2009
filing date -
Oct 28, 2008
priority date (Note) -
Abandoned
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Abstract
A filled polyurethane foam that includes a closed-cell polyurethane matrix having a mineral filler dispersed therein, wherein the polyurethane foam has a density of from about 1.5 to about 3.0 pounds per cubic foot, is described. The filled polyurethane foam can be prepared by mixing a polyol component that includes a blowing agent and an isocyanate component under reaction conditions, wherein one or both of the polyol component and the isocyanate component include a mineral filler, and allowing the mixed components to expand and cure. The filled polyurethane foam can be used as a door core that includes less polyurethane than polyurethane door cores that lack the mineral filler.
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