POST-FUNCTIONALIZED ROOFING GRANULES, AND PROCESS FOR PREPARING SAME
First Claim
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1. A process for preparing functionalized roofing granules, the process comprising:
- (a) providing base roofing granules having a first coating layer, the first coating layer including at least one coloring material;
(b) coating the base roofing granules with a clear, transparent or translucent outer coating composition, the outer coating composition comprising an outer coating binder and at least one functional material; and
(c) curing the outer coating composition to form a transparent or translucent outer coating layer on the base roofing granules.
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Abstract
Roofing granules having a color coating layer are covered with a clear, transparent or translucent outer coating composition including a functional material, such nanoparticles of anatase titanium dioxide.
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Citations
22 Claims
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1. A process for preparing functionalized roofing granules, the process comprising:
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(a) providing base roofing granules having a first coating layer, the first coating layer including at least one coloring material; (b) coating the base roofing granules with a clear, transparent or translucent outer coating composition, the outer coating composition comprising an outer coating binder and at least one functional material; and (c) curing the outer coating composition to form a transparent or translucent outer coating layer on the base roofing granules. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A process for preparing functionalized roofing granules, the process comprising:
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(a) providing base roofing granules having a first coating layer, the first coating layer including at least one coloring material; (b) coating the base roofing granules with a second coating composition to form a second coating layer over the first coating layer; (c) curing the second coating composition having a second coating layer on the base roofing granules to form intermediate granules; (d) coating the intermediate granules with a transparent or translucent outer coating composition, the outer coating composition comprising an outer coating binder and at least one functional material; and (e) curing the outer coating composition to form a transparent or translucent outer coating layer on the base roofing granules. - View Dependent Claims (9, 10)
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11. Functionalized roofing granules comprising:
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(a) base roofing granules having a first coating layer, the first coating layer including at least one coloring material; and (b) a clear, transparent or translucent outer coating layer comprising an outer coating binder and at least one functional material. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. Functionalized roofing granules comprising:
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(a) base roofing granules having a first coating layer, the first coating layer including at least one coloring material; (b) a second coating layer over the first coating layer; (c) a clear, transparent or translucent outer coating layer comprising an outer coating binder and at least one functional material. - View Dependent Claims (19, 20)
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21. Functionalized roofing granules comprising:
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(a) base roofing granules; and (b) a coating layer comprising a coating binder, at least one coloring material, and at least one functional material.
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22. Functionalized roofing granules comprising:
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(a) base roofing granules having a first coating layer, the first coating layer including at least one coloring material including an organic compound or ligand; (b) a second coating layer over the first coating layer; (c) a clear, transparent or translucent outer coating layer comprising an outer coating binder and at least one photocatalytic functional material.
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Specification