# US 9,039,938 B2 · Coatings containing functionalized graphene sheets and articles coated therewith

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- Number: US 9,039,938 B2
- Document ID: US9039938B2
- Status: Granted
- Kind: B2
- Application number: 12/866,089
- Filed: 2009-01-09
- Published: 2011-03-03
- Granted: 2015-05-26
- Earliest claimed: 2008-02-05
- Assignees: The Trustees of Princeton University; Vorbeck Materials Corp.
- Applicants: John M. Crain; John S. Lettow; Ilhan A. Aksay; Robert K. Prud'Homme; Sibel Korkut
- Inventors: John M. Crain; John S. Lettow; Ilhan A. Aksay; Robert K. Prud'Homme; Sibel Korkut
- Web page: https://patentgrep.com/patent/US9039938B2

## CPC

- C09D 5/24: Electrically-conducting paints {(conductive materials H01B1/00)}
- C09D 7/62: modified by treatment with other compounds
- C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres}
- C09D 101/08: Cellulose derivatives
- C09D 123/06: Polyethylene
- C09D 125/14: with unsaturated esters
- C09D 131/04: Homopolymers or copolymers of vinyl acetate
- C09D 133/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- C09D 133/12: Homopolymers or copolymers of methyl methacrylate
- C09D 171/02: Polyalkylene oxides
- B82Y 10/00: Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- C08K 3/042: {Graphene or derivatives, e.g. graphene oxides}
- H01B 1/04: mainly consisting of carbon-silicon compounds, carbon or silicon
- H01B 1/24: the conductive material comprising carbon-silicon compounds, carbon or silicon
- Y10T 156/109: Embedding of laminae within face of additional laminae
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Coatings are provided containing functionalized graphene sheets and at least one binder. In one embodiment, the coatings are electrically conductive.

## Claims

### Claim 1

A coating, comprising functionalized graphene sheets and at least one binder,
wherein the functionalized graphene sheets have a carbon to oxygen ratio of at least about 50:1.

### Claim 2 (depends on 1)

The coating of claim 1, wherein the binder is a polymeric binder.

### Claim 3 (depends on 1)

The coating of claim 1, further comprising one or more carriers.

### Claim 4 (depends on 1)

The coating of claim 1, further comprising one or more dispersants.

### Claim 5 (depends on 1)

The coating of claim 1, wherein the coating has an electrical conductivity of at least about 10−8 S/cm.

### Claim 6 (depends on 1)

The coating of claim 1, wherein the coating has an electrical conductivity of at least about 103 S/cm.

### Claim 7 (depends on 1)

The coating of claim 1, wherein the functionalized graphene sheets have a surface area of at least about 300 m2/g.

### Claim 8 (depends on 1)

The coating of claim 1, wherein the functionalized graphene sheets have a surface area of from about 400 to about 2400 m2/g.

### Claim 9 (depends on 1)

The coating of claim 1, further comprising at least one electrically conductive polymer.

### Claim 10 (depends on 1)

The coating of claim 1, further comprising at least one carbonaceous materials other than the functionalized graphene sheets.

### Claim 11

A method for coating a substrate having a surface, comprising the step of applying a coating comprising functionalized graphene sheets and at least one binder to the surface, wherein the functionalized graphene sheets have a carbon to oxygen ratio of at least about 50:1.

### Claim 12 (depends on 11)

The method of claim 11, wherein the substrate comprises a polymeric material.

### Claim 13 (depends on 11)

The method of claim 11, wherein the substrate is a metal.

### Claim 14 (depends on 11)

The method of claim 11, wherein the substrate is a fabric, textile, or pulp product.

### Claim 15 (depends on 11)

The method of claim 11, wherein the coating has an electrical conductivity of at least about 10−8 S/cm.

### Claim 16 (depends on 11)

The method of claim 11, wherein the coating has an electrical conductivity of at least about 103 S/cm.

### Claim 17 (depends on 11)

The method of claim 11, wherein the functionalized graphene sheets have a surface area of at least about 300 m2/g.

### Claim 18 (depends on 11)

The method of claim 11, wherein the functionalized graphene sheets have a surface area of from about 400 to about 2400 m2/g.

### Claim 19

An article coated with a coating comprising functionalized graphene sheets having at least one binder, wherein the functionalized graphene sheets have a carbon to oxygen ratio of at least about 50:1.

### Claim 20 (depends on 19)

The article of claim 19 in the form of an electrical or electronic component housing.

### Claim 21 (depends on 19)

The article of claim 19, wherein the coating has an electrical conductivity of at least about 10−8 S/cm.

### Claim 22 (depends on 19)

The article of claim 19, wherein the coating has an electrical conductivity of at least about 103 S/cm.

### Claim 23 (depends on 1)

The coating of claim 1, wherein the functionalized graphene sheets have a carbon to oxygen ratio of at least about 100:1.

### Claim 24 (depends on 11)

The method of claim 11, wherein the coating has an electrical conductivity of at least about 102 S/cm.

### Claim 25 (depends on 1)

The coating of claim 1, wherein the binder is one or more polymers selected from the group consisting of poly(ethylene oxide)s, poly(propylene oxide)s, ethylene oxide/propylene oxide copolymers, cellulosic resins, ethyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl cellulose, cellulose acetate, cellulose acetate propionates, cellulose acetate butyrates, poly(vinyl butyral, polyvinyl alcohol, ethylene/vinyl acetate polymers, acrylic polymers and copolymers, styrene/acrylic copolymers, styrene/maleic anhydride copolymers, isobutylene/maleic anhydride copolymers, vinyl acetate/ethylene copolymers, ethylene/acrylic acid copolymers, polyolefins, polystyrenes, olefin and styrene copolymers, epoxy resins, acrylic latex polymers, polyester acrylate oligomers and polymers, polyesterdiol diacrylate polymers, UV-curable resins, and polyamides.