Patent
US 8,449,791GRAPHENE COMPOSITION HAVING LIQUID CRYSTALLINE PROPERTIES AND PREPARATION METHOD THEREOF
Sang Ouk KIM
US
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US 8,449,791Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic diagram showing a method for preparing a graphene oxide composition having liquid crystalline properties according to the present …
FIG. 2 is a schematic diagram showing a method of coupling an electromagnetic material to a graphene oxide composition having liquid crystalline properties …
FIGS. 3 is a graphic diagram showing the volume fraction of a nematic phase as a function of the concentration of a graphene oxide composition having liquid …
FIG. 4 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): polarized …
FIG. 5 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): a 0.001 wt% …
FIG. 6 is a polarized micrograph showing the disclination morphologies of a 0.3wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 8 shows polarized micrograph of a liquid crystalline graphene oxide composition having a graphene oxide concentration of 0.3 wt%, which was prepared from …
FIG. 9 shows polarized micrograph of a liquid crystal polymer nanocomposite comprising natural graphite (Graphit Kropfmuhl) and PAA according to the present …
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
US 12/976,930 Atty. ref.: OTB- 105 AMENDMENTS TO THE CLAIMS 1. (Cu rr ently amended) A graphene composition having liquid crystalline properties, which comprises 0.001 to 20 parts by weight of graphene based on 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The graphene composition having liquid crystalline properties according to claim 1, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
The graphene composition having liquid crystalline properties according to claim 1, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
A liquid crystal nanocomposite comprising an electromagnetic material and the graphene composition having liquid crystalline properties of claim 1.
A liquid crystal polymer nanocomposite comprising a polymer and the graphene composition having liquid crystalline properties of claim 1.
3.
(Cu rr ently Amended) A method for preparing a graphene composition having liquid crystalline properties, comprising a step of preparing a dispersion by dispersing 0.05 to 20 parts by weight of graphene in 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The method according to claim 5, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
The method according to claim 5, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
-2- US 12/976,930 Atty. ref.: OTB- 105 9. The method according to claim 5, wherein dispersing the graphene in the medium is achieved by a method selected from a group consisting of sonication, mechanical stirring and a combination thereof.
(Cu rr ently amended) The method according to claim 5, further comprising a step of performing dialysis or centrifugation for removing from said composition having liquid crystalline properties impurities in-the -di spe rsion comprising graphene dispersed in the medium.
8.
Layer stacks claimed or described, ordered top of device to substrate.
liquid crystal nanocomposite
liquid crystal polymer nanocomposite
Materials described outside the worked examples.
graphene
medium
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 0.001–20 pa | — |
Pressure |
Table 1
section A B C Manufacturer Sigma Aldrich Graphit Bay Carbon(SPI) (graphite flake)
In this Example, three types of graphite (A, B and C) shown in Table 1 below were used.
p. 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,449,791Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic diagram showing a method for preparing a graphene oxide composition having liquid crystalline properties according to the present …
FIG. 2 is a schematic diagram showing a method of coupling an electromagnetic material to a graphene oxide composition having liquid crystalline properties …
FIGS. 3 is a graphic diagram showing the volume fraction of a nematic phase as a function of the concentration of a graphene oxide composition having liquid …
FIG. 4 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): polarized …
FIG. 5 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): a 0.001 wt% …
FIG. 6 is a polarized micrograph showing the disclination morphologies of a 0.3wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 8 shows polarized micrograph of a liquid crystalline graphene oxide composition having a graphene oxide concentration of 0.3 wt%, which was prepared from …
FIG. 9 shows polarized micrograph of a liquid crystal polymer nanocomposite comprising natural graphite (Graphit Kropfmuhl) and PAA according to the present …
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
US 12/976,930 Atty. ref.: OTB- 105 AMENDMENTS TO THE CLAIMS 1. (Cu rr ently amended) A graphene composition having liquid crystalline properties, which comprises 0.001 to 20 parts by weight of graphene based on 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The graphene composition having liquid crystalline properties according to claim 1, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
The graphene composition having liquid crystalline properties according to claim 1, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
A liquid crystal nanocomposite comprising an electromagnetic material and the graphene composition having liquid crystalline properties of claim 1.
A liquid crystal polymer nanocomposite comprising a polymer and the graphene composition having liquid crystalline properties of claim 1.
3.
(Cu rr ently Amended) A method for preparing a graphene composition having liquid crystalline properties, comprising a step of preparing a dispersion by dispersing 0.05 to 20 parts by weight of graphene in 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The method according to claim 5, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
The method according to claim 5, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
-2- US 12/976,930 Atty. ref.: OTB- 105 9. The method according to claim 5, wherein dispersing the graphene in the medium is achieved by a method selected from a group consisting of sonication, mechanical stirring and a combination thereof.
(Cu rr ently amended) The method according to claim 5, further comprising a step of performing dialysis or centrifugation for removing from said composition having liquid crystalline properties impurities in-the -di spe rsion comprising graphene dispersed in the medium.
8.
Layer stacks claimed or described, ordered top of device to substrate.
liquid crystal nanocomposite
liquid crystal polymer nanocomposite
Materials described outside the worked examples.
graphene
medium
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 0.001–20 pa | — |
Pressure |
Table 1
section A B C Manufacturer Sigma Aldrich Graphit Bay Carbon(SPI) (graphite flake)
In this Example, three types of graphite (A, B and C) shown in Table 1 below were used.
p. 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,449,791Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic diagram showing a method for preparing a graphene oxide composition having liquid crystalline properties according to the present …
FIG. 2 is a schematic diagram showing a method of coupling an electromagnetic material to a graphene oxide composition having liquid crystalline properties …
FIGS. 3 is a graphic diagram showing the volume fraction of a nematic phase as a function of the concentration of a graphene oxide composition having liquid …
FIG. 4 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): polarized …
FIG. 5 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): a 0.001 wt% …
FIG. 6 is a polarized micrograph showing the disclination morphologies of a 0.3wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 8 shows polarized micrograph of a liquid crystalline graphene oxide composition having a graphene oxide concentration of 0.3 wt%, which was prepared from …
FIG. 9 shows polarized micrograph of a liquid crystal polymer nanocomposite comprising natural graphite (Graphit Kropfmuhl) and PAA according to the present …
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
US 12/976,930 Atty. ref.: OTB- 105 AMENDMENTS TO THE CLAIMS 1. (Cu rr ently amended) A graphene composition having liquid crystalline properties, which comprises 0.001 to 20 parts by weight of graphene based on 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The graphene composition having liquid crystalline properties according to claim 1, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
The graphene composition having liquid crystalline properties according to claim 1, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
A liquid crystal nanocomposite comprising an electromagnetic material and the graphene composition having liquid crystalline properties of claim 1.
A liquid crystal polymer nanocomposite comprising a polymer and the graphene composition having liquid crystalline properties of claim 1.
3.
(Cu rr ently Amended) A method for preparing a graphene composition having liquid crystalline properties, comprising a step of preparing a dispersion by dispersing 0.05 to 20 parts by weight of graphene in 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The method according to claim 5, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
The method according to claim 5, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
-2- US 12/976,930 Atty. ref.: OTB- 105 9. The method according to claim 5, wherein dispersing the graphene in the medium is achieved by a method selected from a group consisting of sonication, mechanical stirring and a combination thereof.
(Cu rr ently amended) The method according to claim 5, further comprising a step of performing dialysis or centrifugation for removing from said composition having liquid crystalline properties impurities in-the -di spe rsion comprising graphene dispersed in the medium.
8.
Layer stacks claimed or described, ordered top of device to substrate.
liquid crystal nanocomposite
liquid crystal polymer nanocomposite
Materials described outside the worked examples.
graphene
medium
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 0.001–20 pa | — |
Pressure |
Table 1
section A B C Manufacturer Sigma Aldrich Graphit Bay Carbon(SPI) (graphite flake)
In this Example, three types of graphite (A, B and C) shown in Table 1 below were used.
p. 9
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 8,449,791Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 is a schematic diagram showing a method for preparing a graphene oxide composition having liquid crystalline properties according to the present …
FIG. 2 is a schematic diagram showing a method of coupling an electromagnetic material to a graphene oxide composition having liquid crystalline properties …
FIGS. 3 is a graphic diagram showing the volume fraction of a nematic phase as a function of the concentration of a graphene oxide composition having liquid …
FIG. 4 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): polarized …
FIG. 5 shows polarized micrograph of a graphene oxide composition having liquid crystalline properties according to the present invention ((a): a 0.001 wt% …
FIG. 6 is a polarized micrograph showing the disclination morphologies of a 0.3wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
FIG. 8 shows polarized micrograph of a liquid crystalline graphene oxide composition having a graphene oxide concentration of 0.3 wt%, which was prepared from …
FIG. 9 shows polarized micrograph of a liquid crystal polymer nanocomposite comprising natural graphite (Graphit Kropfmuhl) and PAA according to the present …
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
US 12/976,930 Atty. ref.: OTB- 105 AMENDMENTS TO THE CLAIMS 1. (Cu rr ently amended) A graphene composition having liquid crystalline properties, which comprises 0.001 to 20 parts by weight of graphene based on 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The graphene composition having liquid crystalline properties according to claim 1, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
The graphene composition having liquid crystalline properties according to claim 1, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
A liquid crystal nanocomposite comprising an electromagnetic material and the graphene composition having liquid crystalline properties of claim 1.
A liquid crystal polymer nanocomposite comprising a polymer and the graphene composition having liquid crystalline properties of claim 1.
3.
(Cu rr ently Amended) A method for preparing a graphene composition having liquid crystalline properties, comprising a step of preparing a dispersion by dispersing 0.05 to 20 parts by weight of graphene in 100 parts by weight of a medium, wherein an aspect ratio of the graphene is 30 to 500,000.
The method according to claim 5, wherein the medium is selected from a group consisting of a flowable solid, semi-solid, liquid and mixture thereof.
The method according to claim 5, wherein the graphene is selected from a group consisting of graphite, single layer graphene, multilayer graphene, graphene oxidation product, graphite oxidation product, functionalized graphene, functionalized graphite, graphene reduction product, graphite reduction product and mixtures thereof.
-2- US 12/976,930 Atty. ref.: OTB- 105 9. The method according to claim 5, wherein dispersing the graphene in the medium is achieved by a method selected from a group consisting of sonication, mechanical stirring and a combination thereof.
(Cu rr ently amended) The method according to claim 5, further comprising a step of performing dialysis or centrifugation for removing from said composition having liquid crystalline properties impurities in-the -di spe rsion comprising graphene dispersed in the medium.
8.
Layer stacks claimed or described, ordered top of device to substrate.
liquid crystal nanocomposite
liquid crystal polymer nanocomposite
Materials described outside the worked examples.
graphene
medium
Additional fabrication and treatment steps described in the patent.
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 7 is a SEM image showing freeze-dried disclination morphologies of a 0.5 wt% concentration graphene oxide composition prepared using natural graphite …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Pressure | 0.001–20 pa | — |
Pressure |
Table 1
section A B C Manufacturer Sigma Aldrich Graphit Bay Carbon(SPI) (graphite flake)
In this Example, three types of graphite (A, B and C) shown in Table 1 below were used.
p. 9
Related documents with shared materials, methods, properties, or citations.
graphite
single layer graphene
multilayer graphene
graphene oxidation product
graphite oxidation product
functionalized graphene
functionalized graphite
graphene reduction product
electromagnetic material
coupling agent
1,3-dicyclohexylcarbodiimide
1-ethyl-3(3-dimethylaminopropyl)-carbodiimide
benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate
O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
polymer
graphene (aspect ratio 30-500,000, dispersed in medium)
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
| — |
Pressure | 0.1–20 pa | — |
Pressure | 10–95 pa | — |
Pressure | ≤ 0.001 pa | — |
Pressure | ≤ 0.1 pa | — |
Pressure | ≤ 10 pa | — |
Pressure | ≥ 20 pa | — |
Pressure | ≥ 95 pa | — |
Pressure | 0.05–20 pa | — |
graphite
single layer graphene
multilayer graphene
graphene oxidation product
graphite oxidation product
functionalized graphene
functionalized graphite
graphene reduction product
electromagnetic material
coupling agent
1,3-dicyclohexylcarbodiimide
1-ethyl-3(3-dimethylaminopropyl)-carbodiimide
benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate
O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
polymer
graphene (aspect ratio 30-500,000, dispersed in medium)
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
| — |
Pressure | 0.1–20 pa | — |
Pressure | 10–95 pa | — |
Pressure | ≤ 0.001 pa | — |
Pressure | ≤ 0.1 pa | — |
Pressure | ≤ 10 pa | — |
Pressure | ≥ 20 pa | — |
Pressure | ≥ 95 pa | — |
Pressure | 0.05–20 pa | — |
graphite
single layer graphene
multilayer graphene
graphene oxidation product
graphite oxidation product
functionalized graphene
functionalized graphite
graphene reduction product
electromagnetic material
coupling agent
1,3-dicyclohexylcarbodiimide
1-ethyl-3(3-dimethylaminopropyl)-carbodiimide
benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate
O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
polymer
graphene (aspect ratio 30-500,000, dispersed in medium)
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
| — |
Pressure | 0.1–20 pa | — |
Pressure | 10–95 pa | — |
Pressure | ≤ 0.001 pa | — |
Pressure | ≤ 0.1 pa | — |
Pressure | ≤ 10 pa | — |
Pressure | ≥ 20 pa | — |
Pressure | ≥ 95 pa | — |
Pressure | 0.05–20 pa | — |
graphite
single layer graphene
multilayer graphene
graphene oxidation product
graphite oxidation product
functionalized graphene
functionalized graphite
graphene reduction product
electromagnetic material
coupling agent
1,3-dicyclohexylcarbodiimide
1-ethyl-3(3-dimethylaminopropyl)-carbodiimide
benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate
O-(7-azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate
polymer
graphene (aspect ratio 30-500,000, dispersed in medium)
FIG. 10 is an SEM image of the cross-section of a freeze-dried liquid crystal polymer nanocomposite according to the present invention.
| — |
Pressure | 0.1–20 pa | — |
Pressure | 10–95 pa | — |
Pressure | ≤ 0.001 pa | — |
Pressure | ≤ 0.1 pa | — |
Pressure | ≤ 10 pa | — |
Pressure | ≥ 20 pa | — |
Pressure | ≥ 95 pa | — |
Pressure | 0.05–20 pa | — |