Graphene-containing roofing materials and related methods

Patent metadata

Field	Value
Publication number	US-2023012282-A1
Application number	US-202217856386-A
Country	US
Kind code	A1
Filing date	Jul 1, 2022
Priority date	Jul 1, 2021
Publication date	Jan 12, 2023
Grant date	—

Abstract

Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may comprise a plurality of coated roofing granules, wherein each of the plurality of the coated roofing granules may comprise a roofing granule having an outer surface; and a granule coating, wherein the granule coating is disposed on at least a portion of the outer surface of the roofing granule, and wherein the granule coating comprises graphene. Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may further comprise a reflective base coating, wherein the reflective base coating is positioned between the outer surface of the roofing granule and the granule coating.

First claim

What is claimed is:

1 . A roofing material, comprising:
a plurality of coated roofing granules, wherein each of the plurality of coated roofing granules comprises:
a roofing granule,
wherein the roofing granule having an outer surface;

a granule coating,
wherein the granule coating disposed on at least a portion of the outer surface of the roofing granule;
wherein the granule coating having an outer surface; and

a plurality of graphene particles,
wherein the plurality of graphene particles disposed on at least a portion of the outer surface of the granule coating.

2 . The roofing material of claim 1 , wherein the plurality of graphene particles covers at least 50% of the outer surface of the granule coating.

3 . The roofing material of claim 1 , wherein the plurality of graphene particles is directly exposed to an environment.

4 . The roofing material of claim 1 , wherein the granule coating comprises at least one of a metal silicate binder, a phosphate binder, a fluoropolymer coating, an acrylic coating, a polyurethane coating, a sol-gel coating, a silica coating, or any combination thereof.

5 . The roofing material of claim 1 , wherein the granule coating comprises at least one of a latent heat reactant, a dispersing agent, a curing agent, an accelerator, a viscosity modifier, a color pigment, or any combination thereof.

6 . The roofing material of claim 1 , wherein the granule coating comprises a polymer.

7 . The roofing material of claim 1 , wherein the granule coating covers 25% to 100% of the outer surface of the roofing granule.

8 . The roofing material of claim 1 , wherein the roofing material has a CIELAB color value comprising an L* value of 50 or less.

9 . The roofing material of claim 1 , wherein the roofing material has a CIELAB color value comprising an L* value range of 0<L*<40.

10 . The roofing material of claim 1 , wherein a total solar reflectance of the plurality of coated roofing granules is at least 10% greater than a roofing granule control, wherein the roofing granule control does not comprise graphene, wherein the total solar reflectance is measured via a spectrophotometer according to ASTM E903.

11 . The roofing material of claim 1 , wherein each of the plurality of coated roofing granules further comprises:
a reflective base coating,
wherein the reflective base coating is positioned between the roofing granule and the granule coating.

12 . The roofing material of claim 11 , wherein the reflective base coating comprises at least one of a reflective pigment, a transitional metal oxide, a cool pigment, a metallic pigment, a metallic particle, a mirrored pigment, a light scattering additive, an opacifier, a thin-film coated particle, or any combination thereof.

13 . A roofing shingle comprising:
a substrate; an asphalt filled coating on the substrate; and a plurality of coated roofing granules disposed on the asphalt filled coating, wherein each of the plurality of coated roofing granules comprises:
a roofing granule,
wherein the roofing granule having an outer surface;

a granule coating,
wherein the granule coating disposed on at least a portion of the outer surface of the roofing granule;
wherein the granule coating having an outer surface; and

a plurality of graphene particles,
wherein the plurality of graphene particles disposed on at least a portion of the outer surface of the granule coating.

14 . The roofing shingle of claim 13 , wherein the plurality of graphene particles covers at least 50% of the outer surface of the granule coating.

15 . The roofing shingle of claim 13 , wherein the plurality of graphene particles is directly exposed to an environment.

16 . The roofing shingle of claim 13 , wherein the granule coating comprises at least one of a metal silicate binder, a phosphate binder, a fluoropolymer coating, an acrylic coating, a polyurethane coating, a sol-gel coating, a silica coating, or any combination thereof.

17 . The roofing shingle of claim 13 , wherein the roofing shingle having a CIELAB color value comprising an L* value range of 0<L*<40.

18 . The roofing shingle of claim 13 , wherein a total solar reflectance of the roofing shingle is at least 10% greater than a roofing shingle control, wherein the roofing shingle control does not comprise graphene, wherein the total solar reflectance is measured via a spectrophotometer according to ASTM E903.

19 . The roofing shingle of claim 13 , wherein each of the plurality of coated roofing granules further comprises:
a reflective base coating,
wherein the reflective base coating is positioned between the outer surface of the roofing granule and the granule coating.

20 . A method comprising:
obtaining a plurality of roofing granules; obtaining a granule coating material; obtaining a graphene composition,
wherein the graphene composition comprises a plurality of graphene particles;
applying the granule coating material to the plurality of roofing granules so as to form a plurality of coated roofing granules; applying the graphene composition to the plurality of coated roofing granules such that the plurality of graphene particles covers at least a portion of the plurality of coated roofing granules; and heating the plurality of coated roofing granules to a first temperature.

Assignees

• Bmic Llc

Inventors

• Shiao Ming-Liang

Classifications

• C04B20/123 Primary

  Multiple coatings, for one of the coatings of which at least one alternative is described · CPC title

• C04B2103/54

  Pigments; Dyes · CPC title

• C04B26/26

  Bituminous materials, e.g. tar, pitch {(C08L95/00 takes precedence)} · CPC title

• C04B2111/00586

  Roofing materials · CPC title

• C04B20/1059

  Pigments or precursors thereof · CPC title