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US 2014/0275409 A1Published application
Hard coatings containing graphenic carbon particles
AssigneePPG Industries Ohio, Inc.
InventorsBeverly Bendiksen, James E. Poole, David Johnson
Life of this patent
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Abstract
Hard coating compositions are disclosed containing graphenic carbon particles. The coating compositions include polymeric resins such as polyurethane or polyester with relatively small amounts of graphenic carbon particles that provide increased hardness.
Claims12
A coating having increased hardness comprising:
- a polymeric resin film;
- and
- graphenic carbon particles dispersed in the polymeric resin film, wherein the graphenic carbon particles comprise less than 15 weight percent of the coating based on the polymeric resin solids.
A coating composition comprising:
- a film-forming resin;
- and
- up to 15 weight percent graphenic carbon particles based on the total resin solids of the coating composition, wherein when the coating composition is cured it has a hardness greater than a hardness of the same coating composition without the graphenic carbon particles.
Dependencies are inferred from the claim text.