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

Claim 10:
11. A method of manufacturing a coated granule, the method comprising:
coating a plurality of aluminum silicate granules with a mixture comprising:
a copolymer, and
a siloxane-based or 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; and
drying the coating on the plurality of aluminum silicate granules to form a plurality of coated granules,
wherein:
the copolymer is a cationic fluorinated (meth)acrylic copolymer,
the plurality of aluminum silicate granules has a particle size in a range from 0.2 mm to 2.4 mm, and
the plurality of aluminum silicate granules has a 65% or greater reflectivity.