	US 12,084,864 B2
	Coated roofing granules, roofing materials made therefrom and methods of preparing coated roofing granules
David D. Kragten, Burnsville, NC (US); and Daniel E. Rardon, Greencastle, PA (US)
Assigned to Specialty Granules Investments LLC, Parsippany, NJ (US)
Filed by SPECIALTY GRANULES INVESTMENTS LLC, Parsippany, NJ (US)
Filed on Jun. 9, 2023, as Appl. No. 18/332,231.
Application 17/488,925 is a division of application No. 16/803,544, filed on Feb. 27, 2020, granted, now 11,136,760, issued on Oct. 5, 2021.
Application 18/332,231 is a continuation of application No. 17/488,925, filed on Sep. 29, 2021, granted, now 11,718,991.
Prior Publication US 2023/0323667 A1, Oct. 12, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E04D 1/20 (2006.01); C09D 133/04 (2006.01); E04D 1/00 (2006.01)

CPC E04D 1/20 (2013.01) [C09D 133/04 (2013.01); E04D 2001/005 (2013.01)]

27 Claims

1. A coated roofing granule comprising:

(a) an obtained roofing granule; and

(b) a post-treatment coating on the obtained roofing granule, the post-treatment coating comprising:

(i) at least one silicon-containing oligomer or silicon-containing polymer, and

(ii) an acrylic resin having a glass transition temperature of −18° C. to 60° C.,

wherein the coating is substantially free of water, and

wherein the coated roofing granule exhibits a total solar reflectance that is 90 percent to 100 percent of the total solar reflectance of the obtained roofing granule without the post-treatment coating.