Composite nanoparticles for roofing granules, roofing shingles containing such granules, and process for producing same
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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Abstract
Roofing granules are prepared by coating granule cores with a coating material including composite nanoparticles and curing the coating layer to dissolve the aggregate binder and disperse the nanoparticles in the coating.
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Citations
17 Claims
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1. A process for preparing roofing granules, the process comprising:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification