POST-FUNCTIONALIZED ROOFING GRANULES AND PROCESS FOR PREPARING SAME
First Claim
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1. Functionalized roofing granules comprising:
- (a) base roofing granules having a first coating layer, the first coating layer including at least one coloring material; and
(b) a cured clear or transparent outer coating layer comprising an outer coating binder and at least one photocatalytic functional material, wherein said photocatalytic functional material comprises at least one photocatalytic metal oxide selected from a group consisting of titanium oxide, copper oxide and zinc oxide.
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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
15 Claims
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1. 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 cured clear or transparent outer coating layer comprising an outer coating binder and at least one photocatalytic functional material, wherein said photocatalytic functional material comprises at least one photocatalytic metal oxide selected from a group consisting of titanium oxide, copper oxide and zinc oxide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification