ROOFING GRANULES WITH HIGH SOLAR REFLECTANCE, ROOFING PRODUCTS WITH HIGH SOLAR REFLECTANCE, AND PROCESS FOR PREPARING SAME
First Claim
Patent Images
1. Solar heat-reflective roofing granules comprising:
- a) a base particle having a flake-like geometry, and an average particle size from #5 US mesh to #50 US mesh,b) a uniform coating layer on the base particle, the coating layer having a thickness of at least one mil, the coating layer comprising a coating binder and at least one solar heat-reflective pigment, the solar heat-reflective pigment providing a solar heat reflectance of greater than 70 percent to the granules.
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Abstract
A solar heat-reflective roofing product includes a base sheet, and solar heat-reflective roofing granules on top of the base sheet. The granules have a base particle with a flake-like geometry covered by a uniform coating layer. The coating layer has a thickness of at least one mil and includes a coating binder and at least one solar heat-reflective pigment. The solar heat-reflective pigment provides a solar heat reflectance of greater than 70 percent to the granules and the roofing product. Roofing products including roofing shingles and roofing membranes are described.
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Citations
41 Claims
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1. Solar heat-reflective roofing granules comprising:
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a) a base particle having a flake-like geometry, and an average particle size from #5 US mesh to #50 US mesh, b) a uniform coating layer on the base particle, the coating layer having a thickness of at least one mil, the coating layer comprising a coating binder and at least one solar heat-reflective pigment, the solar heat-reflective pigment providing a solar heat reflectance of greater than 70 percent to the granules. - View Dependent Claims (2, 5, 6, 7, 8, 9, 28)
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3-4. -4. (canceled)
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10. A solar heat-reflective roofing product comprising:
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a) a base sheet, and b) solar heat-reflective roofing granules on top of the base sheet, the granules comprising; 1) a base particle having a flake-like geometry, and an average particle size from #5 US mesh to #50 US mesh, 2) a uniform coating layer on the base particle, the coating layer having a thickness of at least one mil, the coating layer comprising a coating binder and at least one solar heat-reflective pigment, the solar heat-reflective pigment providing a solar heat reflectance of greater than 70 percent to the granules. - View Dependent Claims (11, 14, 21, 22, 23, 32, 34)
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12. (canceled)
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13. (canceled)
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15-20. -20. (canceled)
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24. A process for preparing solar heat reflective roofing granules, the process comprising:
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a) providing base particles having a flake-like geometry, and an average particle size from #5 US mesh to #50 US mesh, b) providing a coating composition including a coating binder and at least one solar heat-reflective pigment; and c) coating the base particles with the coating composition to provide a uniform coating layer on the base particles, the solar heat-reflective pigment providing a solar heat reflectance of greater than 70 percent to the granules. - View Dependent Claims (39)
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25. A process for preparing solar heat reflective roofing products, the process comprising:
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a) providing base particles having a flake-like geometry, and an average particle size from #5 US mesh to #50 US mesh, b) providing a coating composition including a coating binder and at least one solar heat-reflective pigment; c) coating the base particles with the coating composition to provide a uniform coating layer on the base particles, the solar heat-reflective pigment providing a solar heat reflectance of greater than 70 percent to the granules, thus providing solar heat-reflective roofing granules; d) providing a bituminous base sheet having an upper surface; and e) applying the solar heat-reflective roofing granules to the upper surface of the base sheet, the solar heat heat-reflective roofing granules being applied to at least 85 percent of the upper surface. - View Dependent Claims (26, 40, 41)
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27. (canceled)
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29-31. -31. (canceled)
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33. (canceled)
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35-38. -38. (canceled)
Specification