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COMPOSITE NANOPARTICLES FOR ROOFING GRANULES, ROOFING SHINGLES CONTAINING SUCH GRANULES, AND PROCESS FOR PRODUCING SAME

  • US 20110159240A1
  • Filed: 11/19/2010
  • Published: 06/30/2011
  • Est. Priority Date: 11/24/2009
  • Status: Active Grant
First Claim
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1. A process for preparing roofing granules, the process comprising;

  • (a) providing granule cores;

    (b) providing a coating material;

    (c) coating the granule cores with the coating material to form a coating layer having an exterior surface;

    (d) including composite nanoparticles in the coating layer; and

    (e) curing the coating layer.

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