Patent ID: 11945971
Assignee: GLOBAL GRAPHENE GROUP, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A graphene-based coating suspension comprising multiple graphene sheets each having two opposed parallel surfaces, thin film coating having a thickness from 0.5 nm to 100 nm of an anti-corrosive pigment or sacrificial metal coated on and covering at least 50% area of one of said two parallel surfaces, and a binder resin dissolved or dispersed in a liquid medium, wherein said multiple graphene sheets contain single-layer or few-layer graphene sheets selected from a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 47% by weight of non-carbon elements wherein said non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof and wherein said graphene sheets have a weight fraction from 0.1% to 30% based on the total coating suspension weight excluding the liquid medium, wherein said anti-corrosive pigment or sacrificial metal is selected from zinc phosphate;
wherein said binder resin contains a resin selected from urethane-urea resin, acrylic alkyd resin, polyimide, thermoset polyester, vinyl ester resin, silicate adhesive, or a combination thereof.