Patent ID: 9394421
Filing Date: 2016-07-19
CPC Classification: C08J,C08K,C09D

Claim Text:
1. A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise.