POLYISOCYANURATE/POLYURETHANE FOAM COMPOSITIONS AND RELATED METHODS
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United States of America Patent
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Issued Date -
Sep 26, 2024
app pub date -
Mar 22, 2024
filing date -
Mar 23, 2023
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Polymeric microspheres may be included in polyisocyanurate/polyurethane foam compositions. An exothermic foaming process and/or the application of heat during the foaming process may cause the polymeric microspheres to expand in diameter. The expanded polymeric microspheres may improve the structural properties and/or the insulating properties (e.g., R-value) of the resultant foamed PIR/PUR composition, especially an open-cell structure.
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