Patent ID: 11884835
Assignee: JOHNS MANVILLE
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 0:
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.