CPC C09D 133/16 (2013.01) [C04B 14/42 (2013.01); C04B 16/04 (2013.01); C04B 20/1033 (2013.01); C04B 20/1051 (2013.01); C04B 26/26 (2013.01); C04B 41/009 (2013.01); C04B 41/4842 (2013.01); C04B 41/4922 (2013.01); C04B 41/5024 (2013.01); C08K 9/04 (2013.01); E04D 5/02 (2013.01); E04D 5/10 (2013.01); E04D 5/12 (2013.01); E04D 7/005 (2013.01); E04D 11/02 (2013.01); C04B 2111/00586 (2013.01); C04B 2111/00612 (2013.01); C04B 2111/27 (2013.01)] | 20 Claims |
1. A coated granule for roofing systems, the coated granule comprising:
an aluminum silicate granule; and
a coating disposed on the aluminum silicate granule, the coating comprising:
a copolymer, and
a siloxane-based or a silane-based compound;
wherein:
the siloxane-based or silane-based compound is 60 wt. % or more of the coating and a mass ratio of the siloxane-based or silane-based compound to the copolymer is from 2:1 to 3:1,
the copolymer is a cationic fluorinated (meth)acrylic copolymer,
the aluminum silicate granule has a particle size in a range from 0.2 mm to 2.4 mm, and
the aluminum silicate granule has a 65% or greater reflectivity.
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