Patent
US 11,680,173 B2GRAPHENE-ENABLED ANTI-CORROSION COATING
Fan-Chun Meng, Yi-jun Lin, Shaio-yen Lee, Wen Y. Chiu et al.
Global Graphene Group, Inc., Dayton, OH (US)·Jun. 20, 2023·US
Copyright © 2026 Matter42. All rights reserved.
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used 50 process for producing oxidized graphene sheets that entails chemical oxidation/intercalation, rinsing, and …
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-based aqueous coating suspension com-prising multiple graphene sheets, particles of an anti-corro-sive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, 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 gra-phene, doped graphene, chemically functionalized gra-phene, or a combination thereof and wherein said coating suspension does not contain a silicate binder or microspheres dispersed therein and wherein said graphene sheets have a weight fraction from 0.1% to 30% based on the total coating suspension weight excluding water, wherein said waterborne binder resin contains a waterborne thermoset resin selected from water-soluble or dispersible phenolic resin; wherein the suspension further includes an electron-con-ducting polymer selected from the group consisting of polydiacetylene, polyacetylene (PAc), polyisothion-aphthene (PITN), poly-p-phenylene (PpP), polyphtha-locyanine (PPhc), and their derivatives, and combina-tions thereof.
The coating suspension of claim 1, wherein said non-pristine graphene material has 1% to 30% by weight of non-carbon elements selected from O, H, N, F, Cl, Br, I, B, P, or a combination thereof.
The coating suspension of claim 1, further comprising 40 a carrier, filler, dispersant, surfactant, defoaming agent, catalyst, accelerator, stabilizer, coalescing agent, thixo-thropic agent, anti-settling agent, color dye, a coupling agent, an extender, a conductive pigment, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from alkyl or aryl silane, alkyl or aralkyl group, hydroxyl group, carboxyl group, amine group, sulfonate group (—SO₃H), aldehydic group, quinoidal, fluorocarbon, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from a derivative of an azide compound selected from the group consisting of 2-azidoethanol, 3-azidopropan-1-amine, 4-(2-azidoethoxy)-4-oxobutanoic acid, 2-azidoethyl-2-bromo-2-methylpropanoate, chlorocarbonate, azidocarbonate, dichlo-rocarbene, carbene, aryne, nitrene, (R-)-oxycarbonyl nitrenes, where R=any one of the following groups, B₂ O S O O O O O O 2-3 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from an oxygenated group selected from the group consisting of hydroxyl, peroxide, ether, keto, and aldehyde.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of SO₃H, COOH, NH2, OH, R'CHOH, CHO, CN, COCl, halide, COSH, SH, COOR', SR, SiR'3, Si(—OR'—)yR'3-y, Si(—O—SiR'2—)OR', R", Li, AlR'2, Hg—X, TlZ₂ and Mg—X; wherein y is an integer equal to or less than 3, R' is hydrogen, alkyl, aryl, cycloalkyl, or aralkyl, cycloaryl, or poly(alkylether), R" is fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroaralkyl or cycloaryl, X is halide, and Z is carboxylate or trifluoroacetate, and combi-nations thereof. 23 24
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of amidoamines, polyamides, aliphatic amines, modified aliphatic amines, cycloaliphatic amines, aromatic amines, anhydrides, ketimines, diethylenetriamine (DETA), triethylene-tetramine (TETA), tetraethylene-pen-tamine (TEPA), polyethylene polyamine, polyamine epoxy adduct, phenolic hardener, non-brominated curing agent, non-amine curatives, and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from OY, NHY, O~C—OY, P~C—NR'Y, O~C—SY, O~C—Y, —CR'1-OY, N'Y or C'Y, and Y is a functional group of a protein, a peptide, an amino acid, an enzyme, an antibody, a nucleotide, an oligonucleotide, an antigen, or an enzyme substrate, enzyme inhibitor or the transition state analog of an enzyme substrate or is selected from R'—OH, R'—NR'2, R'SH, R'CHO, R'CN, R'X, R'N+(R')3X−, R'SiR'3, R'Si(— OR'—)yR'3-y, R'Si(—O—SiR'2—) OR', R'—R", R'—N— CO, (C₂H₄O—)wH, (—C₃H₆O—)wH, (—C₂H₄O)w—R', (C₃H₆O)w—R', R', and w is an integer greater than one and less than 200. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
graphene-based aqueous anti-corrosion coating suspension
Materials described outside the worked examples.
pristine graphene
non-pristine graphene
graphene oxide
reduced graphene oxide
graphene fluoride
hydrogenated graphene
nitrogenated graphene
anti-corrosive pigment or sacrificial metal
waterborne thermoset resin — water-soluble or dispersible phenolic resin
chemically functionalized graphene
electron-conducting polymer
polydiacetylene/polyacetylene (PAc)/polyisothionaphthene (PITN)/poly-p-phenylene (PpP)/polyphthalocyanine (PPhc)
conductive pigment
zinc
Zn
zinc phosphate
aluminum
Al
waterborne epoxy resin
waterborne polyurethane resin
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 90–150 °C | — |
Thickness | 1–1000000 nm | — |
Thickness | 10–100000 nm | — |
Thickness | 100–10000 nm | — |
Duration | 5–900 s | — |
Pressure | 1–30 pa | — |
Duration | 30–60 minutes | — |
Duration | 15–60 seconds | — |
Temperature | 800–1050 °C | — |
Temperature | 0–70 °C | — |
Temperature | 600–1100 °C | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Duration | 30–90 seconds | — |
Temperature | ≥ 70 °C | — |
Duration | ≥ 1 minute | — |
Thickness | ≥ 0.6 nm | — |
Temperature | ≥ 31 °C | — |
Pressure | ≥ 7.4 MPa | — |
Temperature | ≥ 374 °C | — |
Pressure | ≥ 22.1 MPa | — |
Thickness | 1–10000000 nm | — |
Thickness | 10–1000000 nm | — |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 52
Cited non-patent literature · 17
Related documents with shared materials, methods, properties, or citations.
METHODS FOR PRODUCING GRAPHENE FROM COAL
ANTI-CORROSION MATERIAL-COATED DISCRETE GRAPHENE SHEETS AND ANTI-CORROSION COATING COMPOSITION CONTAINING SAME
DETECTION OF TRANSLOCATION EVENTS USING GRAPHENE-BASED NANOPORE ASSEMBLIES
ALKALI METAL-SELENIUM SECONDARY BATTERY CONTAINING A GRAPHENE-BASED SEPARATOR LAYER
METHOD FOR MANUFACTURING GRAPHENE BALLS
OPTICAL FIBER CONTAINING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE AND A GAS SENSOR CONTAINING THE SAME
NANO-SCALED GRAPHENE PLATES
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used 50 process for producing oxidized graphene sheets that entails chemical oxidation/intercalation, rinsing, and …
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-based aqueous coating suspension com-prising multiple graphene sheets, particles of an anti-corro-sive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, 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 gra-phene, doped graphene, chemically functionalized gra-phene, or a combination thereof and wherein said coating suspension does not contain a silicate binder or microspheres dispersed therein and wherein said graphene sheets have a weight fraction from 0.1% to 30% based on the total coating suspension weight excluding water, wherein said waterborne binder resin contains a waterborne thermoset resin selected from water-soluble or dispersible phenolic resin; wherein the suspension further includes an electron-con-ducting polymer selected from the group consisting of polydiacetylene, polyacetylene (PAc), polyisothion-aphthene (PITN), poly-p-phenylene (PpP), polyphtha-locyanine (PPhc), and their derivatives, and combina-tions thereof.
The coating suspension of claim 1, wherein said non-pristine graphene material has 1% to 30% by weight of non-carbon elements selected from O, H, N, F, Cl, Br, I, B, P, or a combination thereof.
The coating suspension of claim 1, further comprising 40 a carrier, filler, dispersant, surfactant, defoaming agent, catalyst, accelerator, stabilizer, coalescing agent, thixo-thropic agent, anti-settling agent, color dye, a coupling agent, an extender, a conductive pigment, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from alkyl or aryl silane, alkyl or aralkyl group, hydroxyl group, carboxyl group, amine group, sulfonate group (—SO₃H), aldehydic group, quinoidal, fluorocarbon, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from a derivative of an azide compound selected from the group consisting of 2-azidoethanol, 3-azidopropan-1-amine, 4-(2-azidoethoxy)-4-oxobutanoic acid, 2-azidoethyl-2-bromo-2-methylpropanoate, chlorocarbonate, azidocarbonate, dichlo-rocarbene, carbene, aryne, nitrene, (R-)-oxycarbonyl nitrenes, where R=any one of the following groups, B₂ O S O O O O O O 2-3 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from an oxygenated group selected from the group consisting of hydroxyl, peroxide, ether, keto, and aldehyde.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of SO₃H, COOH, NH2, OH, R'CHOH, CHO, CN, COCl, halide, COSH, SH, COOR', SR, SiR'3, Si(—OR'—)yR'3-y, Si(—O—SiR'2—)OR', R", Li, AlR'2, Hg—X, TlZ₂ and Mg—X; wherein y is an integer equal to or less than 3, R' is hydrogen, alkyl, aryl, cycloalkyl, or aralkyl, cycloaryl, or poly(alkylether), R" is fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroaralkyl or cycloaryl, X is halide, and Z is carboxylate or trifluoroacetate, and combi-nations thereof. 23 24
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of amidoamines, polyamides, aliphatic amines, modified aliphatic amines, cycloaliphatic amines, aromatic amines, anhydrides, ketimines, diethylenetriamine (DETA), triethylene-tetramine (TETA), tetraethylene-pen-tamine (TEPA), polyethylene polyamine, polyamine epoxy adduct, phenolic hardener, non-brominated curing agent, non-amine curatives, and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from OY, NHY, O~C—OY, P~C—NR'Y, O~C—SY, O~C—Y, —CR'1-OY, N'Y or C'Y, and Y is a functional group of a protein, a peptide, an amino acid, an enzyme, an antibody, a nucleotide, an oligonucleotide, an antigen, or an enzyme substrate, enzyme inhibitor or the transition state analog of an enzyme substrate or is selected from R'—OH, R'—NR'2, R'SH, R'CHO, R'CN, R'X, R'N+(R')3X−, R'SiR'3, R'Si(— OR'—)yR'3-y, R'Si(—O—SiR'2—) OR', R'—R", R'—N— CO, (C₂H₄O—)wH, (—C₃H₆O—)wH, (—C₂H₄O)w—R', (C₃H₆O)w—R', R', and w is an integer greater than one and less than 200. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
graphene-based aqueous anti-corrosion coating suspension
Materials described outside the worked examples.
pristine graphene
non-pristine graphene
graphene oxide
reduced graphene oxide
graphene fluoride
hydrogenated graphene
nitrogenated graphene
anti-corrosive pigment or sacrificial metal
waterborne thermoset resin — water-soluble or dispersible phenolic resin
chemically functionalized graphene
electron-conducting polymer
polydiacetylene/polyacetylene (PAc)/polyisothionaphthene (PITN)/poly-p-phenylene (PpP)/polyphthalocyanine (PPhc)
conductive pigment
zinc
Zn
zinc phosphate
aluminum
Al
waterborne epoxy resin
waterborne polyurethane resin
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 90–150 °C | — |
Thickness | 1–1000000 nm | — |
Thickness | 10–100000 nm | — |
Thickness | 100–10000 nm | — |
Duration | 5–900 s | — |
Pressure | 1–30 pa | — |
Duration | 30–60 minutes | — |
Duration | 15–60 seconds | — |
Temperature | 800–1050 °C | — |
Temperature | 0–70 °C | — |
Temperature | 600–1100 °C | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Duration | 30–90 seconds | — |
Temperature | ≥ 70 °C | — |
Duration | ≥ 1 minute | — |
Thickness | ≥ 0.6 nm | — |
Temperature | ≥ 31 °C | — |
Pressure | ≥ 7.4 MPa | — |
Temperature | ≥ 374 °C | — |
Pressure | ≥ 22.1 MPa | — |
Thickness | 1–10000000 nm | — |
Thickness | 10–1000000 nm | — |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 52
Cited non-patent literature · 17
Related documents with shared materials, methods, properties, or citations.
METHODS FOR PRODUCING GRAPHENE FROM COAL
ANTI-CORROSION MATERIAL-COATED DISCRETE GRAPHENE SHEETS AND ANTI-CORROSION COATING COMPOSITION CONTAINING SAME
DETECTION OF TRANSLOCATION EVENTS USING GRAPHENE-BASED NANOPORE ASSEMBLIES
ALKALI METAL-SELENIUM SECONDARY BATTERY CONTAINING A GRAPHENE-BASED SEPARATOR LAYER
METHOD FOR MANUFACTURING GRAPHENE BALLS
OPTICAL FIBER CONTAINING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE AND A GAS SENSOR CONTAINING THE SAME
NANO-SCALED GRAPHENE PLATES
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used 50 process for producing oxidized graphene sheets that entails chemical oxidation/intercalation, rinsing, and …
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-based aqueous coating suspension com-prising multiple graphene sheets, particles of an anti-corro-sive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, 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 gra-phene, doped graphene, chemically functionalized gra-phene, or a combination thereof and wherein said coating suspension does not contain a silicate binder or microspheres dispersed therein and wherein said graphene sheets have a weight fraction from 0.1% to 30% based on the total coating suspension weight excluding water, wherein said waterborne binder resin contains a waterborne thermoset resin selected from water-soluble or dispersible phenolic resin; wherein the suspension further includes an electron-con-ducting polymer selected from the group consisting of polydiacetylene, polyacetylene (PAc), polyisothion-aphthene (PITN), poly-p-phenylene (PpP), polyphtha-locyanine (PPhc), and their derivatives, and combina-tions thereof.
The coating suspension of claim 1, wherein said non-pristine graphene material has 1% to 30% by weight of non-carbon elements selected from O, H, N, F, Cl, Br, I, B, P, or a combination thereof.
The coating suspension of claim 1, further comprising 40 a carrier, filler, dispersant, surfactant, defoaming agent, catalyst, accelerator, stabilizer, coalescing agent, thixo-thropic agent, anti-settling agent, color dye, a coupling agent, an extender, a conductive pigment, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from alkyl or aryl silane, alkyl or aralkyl group, hydroxyl group, carboxyl group, amine group, sulfonate group (—SO₃H), aldehydic group, quinoidal, fluorocarbon, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from a derivative of an azide compound selected from the group consisting of 2-azidoethanol, 3-azidopropan-1-amine, 4-(2-azidoethoxy)-4-oxobutanoic acid, 2-azidoethyl-2-bromo-2-methylpropanoate, chlorocarbonate, azidocarbonate, dichlo-rocarbene, carbene, aryne, nitrene, (R-)-oxycarbonyl nitrenes, where R=any one of the following groups, B₂ O S O O O O O O 2-3 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from an oxygenated group selected from the group consisting of hydroxyl, peroxide, ether, keto, and aldehyde.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of SO₃H, COOH, NH2, OH, R'CHOH, CHO, CN, COCl, halide, COSH, SH, COOR', SR, SiR'3, Si(—OR'—)yR'3-y, Si(—O—SiR'2—)OR', R", Li, AlR'2, Hg—X, TlZ₂ and Mg—X; wherein y is an integer equal to or less than 3, R' is hydrogen, alkyl, aryl, cycloalkyl, or aralkyl, cycloaryl, or poly(alkylether), R" is fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroaralkyl or cycloaryl, X is halide, and Z is carboxylate or trifluoroacetate, and combi-nations thereof. 23 24
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of amidoamines, polyamides, aliphatic amines, modified aliphatic amines, cycloaliphatic amines, aromatic amines, anhydrides, ketimines, diethylenetriamine (DETA), triethylene-tetramine (TETA), tetraethylene-pen-tamine (TEPA), polyethylene polyamine, polyamine epoxy adduct, phenolic hardener, non-brominated curing agent, non-amine curatives, and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from OY, NHY, O~C—OY, P~C—NR'Y, O~C—SY, O~C—Y, —CR'1-OY, N'Y or C'Y, and Y is a functional group of a protein, a peptide, an amino acid, an enzyme, an antibody, a nucleotide, an oligonucleotide, an antigen, or an enzyme substrate, enzyme inhibitor or the transition state analog of an enzyme substrate or is selected from R'—OH, R'—NR'2, R'SH, R'CHO, R'CN, R'X, R'N+(R')3X−, R'SiR'3, R'Si(— OR'—)yR'3-y, R'Si(—O—SiR'2—) OR', R'—R", R'—N— CO, (C₂H₄O—)wH, (—C₃H₆O—)wH, (—C₂H₄O)w—R', (C₃H₆O)w—R', R', and w is an integer greater than one and less than 200. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
graphene-based aqueous anti-corrosion coating suspension
Materials described outside the worked examples.
pristine graphene
non-pristine graphene
graphene oxide
reduced graphene oxide
graphene fluoride
hydrogenated graphene
nitrogenated graphene
anti-corrosive pigment or sacrificial metal
waterborne thermoset resin — water-soluble or dispersible phenolic resin
chemically functionalized graphene
electron-conducting polymer
polydiacetylene/polyacetylene (PAc)/polyisothionaphthene (PITN)/poly-p-phenylene (PpP)/polyphthalocyanine (PPhc)
conductive pigment
zinc
Zn
zinc phosphate
aluminum
Al
waterborne epoxy resin
waterborne polyurethane resin
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 90–150 °C | — |
Thickness | 1–1000000 nm | — |
Thickness | 10–100000 nm | — |
Thickness | 100–10000 nm | — |
Duration | 5–900 s | — |
Pressure | 1–30 pa | — |
Duration | 30–60 minutes | — |
Duration | 15–60 seconds | — |
Temperature | 800–1050 °C | — |
Temperature | 0–70 °C | — |
Temperature | 600–1100 °C | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Duration | 30–90 seconds | — |
Temperature | ≥ 70 °C | — |
Duration | ≥ 1 minute | — |
Thickness | ≥ 0.6 nm | — |
Temperature | ≥ 31 °C | — |
Pressure | ≥ 7.4 MPa | — |
Temperature | ≥ 374 °C | — |
Pressure | ≥ 22.1 MPa | — |
Thickness | 1–10000000 nm | — |
Thickness | 10–1000000 nm | — |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 52
Cited non-patent literature · 17
Related documents with shared materials, methods, properties, or citations.
METHODS FOR PRODUCING GRAPHENE FROM COAL
ANTI-CORROSION MATERIAL-COATED DISCRETE GRAPHENE SHEETS AND ANTI-CORROSION COATING COMPOSITION CONTAINING SAME
DETECTION OF TRANSLOCATION EVENTS USING GRAPHENE-BASED NANOPORE ASSEMBLIES
ALKALI METAL-SELENIUM SECONDARY BATTERY CONTAINING A GRAPHENE-BASED SEPARATOR LAYER
METHOD FOR MANUFACTURING GRAPHENE BALLS
OPTICAL FIBER CONTAINING GRAPHENE OXIDE AND REDUCED GRAPHENE OXIDE AND A GAS SENSOR CONTAINING THE SAME
NANO-SCALED GRAPHENE PLATES
Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 A flow chart showing the most commonly used 50 process for producing oxidized graphene sheets that entails chemical oxidation/intercalation, rinsing, and …
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A graphene-based aqueous coating suspension com-prising multiple graphene sheets, particles of an anti-corro-sive pigment or sacrificial metal, and a waterborne binder resin dissolved or dispersed in water, 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 gra-phene, doped graphene, chemically functionalized gra-phene, or a combination thereof and wherein said coating suspension does not contain a silicate binder or microspheres dispersed therein and wherein said graphene sheets have a weight fraction from 0.1% to 30% based on the total coating suspension weight excluding water, wherein said waterborne binder resin contains a waterborne thermoset resin selected from water-soluble or dispersible phenolic resin; wherein the suspension further includes an electron-con-ducting polymer selected from the group consisting of polydiacetylene, polyacetylene (PAc), polyisothion-aphthene (PITN), poly-p-phenylene (PpP), polyphtha-locyanine (PPhc), and their derivatives, and combina-tions thereof.
The coating suspension of claim 1, wherein said non-pristine graphene material has 1% to 30% by weight of non-carbon elements selected from O, H, N, F, Cl, Br, I, B, P, or a combination thereof.
The coating suspension of claim 1, further comprising 40 a carrier, filler, dispersant, surfactant, defoaming agent, catalyst, accelerator, stabilizer, coalescing agent, thixo-thropic agent, anti-settling agent, color dye, a coupling agent, an extender, a conductive pigment, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from alkyl or aryl silane, alkyl or aralkyl group, hydroxyl group, carboxyl group, amine group, sulfonate group (—SO₃H), aldehydic group, quinoidal, fluorocarbon, or a combination thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from a derivative of an azide compound selected from the group consisting of 2-azidoethanol, 3-azidopropan-1-amine, 4-(2-azidoethoxy)-4-oxobutanoic acid, 2-azidoethyl-2-bromo-2-methylpropanoate, chlorocarbonate, azidocarbonate, dichlo-rocarbene, carbene, aryne, nitrene, (R-)-oxycarbonyl nitrenes, where R=any one of the following groups, B₂ O S O O O O O O 2-3 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from an oxygenated group selected from the group consisting of hydroxyl, peroxide, ether, keto, and aldehyde.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of SO₃H, COOH, NH2, OH, R'CHOH, CHO, CN, COCl, halide, COSH, SH, COOR', SR, SiR'3, Si(—OR'—)yR'3-y, Si(—O—SiR'2—)OR', R", Li, AlR'2, Hg—X, TlZ₂ and Mg—X; wherein y is an integer equal to or less than 3, R' is hydrogen, alkyl, aryl, cycloalkyl, or aralkyl, cycloaryl, or poly(alkylether), R" is fluoroalkyl, fluoroaryl, fluorocycloalkyl, fluoroaralkyl or cycloaryl, X is halide, and Z is carboxylate or trifluoroacetate, and combi-nations thereof. 23 24
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from the group consisting of amidoamines, polyamides, aliphatic amines, modified aliphatic amines, cycloaliphatic amines, aromatic amines, anhydrides, ketimines, diethylenetriamine (DETA), triethylene-tetramine (TETA), tetraethylene-pen-tamine (TEPA), polyethylene polyamine, polyamine epoxy adduct, phenolic hardener, non-brominated curing agent, non-amine curatives, and combinations thereof.
The coating suspension of claim 1, wherein said chemically functionalized graphene comprises graphene sheets having a chemical functional group selected from OY, NHY, O~C—OY, P~C—NR'Y, O~C—SY, O~C—Y, —CR'1-OY, N'Y or C'Y, and Y is a functional group of a protein, a peptide, an amino acid, an enzyme, an antibody, a nucleotide, an oligonucleotide, an antigen, or an enzyme substrate, enzyme inhibitor or the transition state analog of an enzyme substrate or is selected from R'—OH, R'—NR'2, R'SH, R'CHO, R'CN, R'X, R'N+(R')3X−, R'SiR'3, R'Si(— OR'—)yR'3-y, R'Si(—O—SiR'2—) OR', R'—R", R'—N— CO, (C₂H₄O—)wH, (—C₃H₆O—)wH, (—C₂H₄O)w—R', (C₃H₆O)w—R', R', and w is an integer greater than one and less than 200. ∗ ∗ ∗ ∗ ∗
Layer stacks claimed or described, ordered top of device to substrate.
graphene-based aqueous anti-corrosion coating suspension
Materials described outside the worked examples.
pristine graphene
non-pristine graphene
graphene oxide
reduced graphene oxide
graphene fluoride
hydrogenated graphene
nitrogenated graphene
anti-corrosive pigment or sacrificial metal
waterborne thermoset resin — water-soluble or dispersible phenolic resin
chemically functionalized graphene
electron-conducting polymer
polydiacetylene/polyacetylene (PAc)/polyisothionaphthene (PITN)/poly-p-phenylene (PpP)/polyphthalocyanine (PPhc)
conductive pigment
zinc
Zn
zinc phosphate
aluminum
Al
waterborne epoxy resin
waterborne polyurethane resin
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 The polarization current density vs. voltage (elec- trochemical potential) for four anti-corrosive coating com- 55 positions.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Temperature | 90–150 °C | — |
Thickness | 1–1000000 nm | — |
Thickness | 10–100000 nm | — |
Thickness | 100–10000 nm | — |
Duration | 5–900 s | — |
Pressure | 1–30 pa | — |
Duration | 30–60 minutes | — |
Duration | 15–60 seconds | — |
Temperature | 800–1050 °C | — |
Temperature | 0–70 °C | — |
Temperature | 600–1100 °C | — |
Temperature | 200–400 °C | — |
Temperature | 150–250 °C | — |
Duration | 30–90 seconds | — |
Temperature | ≥ 70 °C | — |
Duration | ≥ 1 minute | — |
Thickness | ≥ 0.6 nm | — |
Temperature | ≥ 31 °C | — |
Pressure | ≥ 7.4 MPa | — |
Temperature | ≥ 374 °C | — |
Pressure | ≥ 22.1 MPa | — |
Thickness | 1–10000000 nm | — |
Thickness | 10–1000000 nm | — |
Patents and literature cited by this patent (applicant and examiner references).
Cited patents · 52
Cited non-patent literature · 17
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