Patent
US 11,472,938Graphene Reinforced Polyethylene Terephthalate
Jay Clarke Hanan
US
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Patent
Atlas literature
Patent
US 11,472,938Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-7. Canceled
Canceled
A method for preparing graphene reinforced polyethylene terephthalate (PET), the method comprising: adding graphene nanoplatelets to a solvent suitable for producing PET; sonicating the solvent and graphene nanoplatelets utilizing a sonicator so as to cause a homogeneous dispersion of the graphene nanoplatelets within the solvent; centrifuging the solvent and graphene nanoplatelets to remove larger graphene nanoplatelets that are not suitably dispersed within the solvent; decanting a supernatant solution of graphene nanoplatelets dispersed in the solvent; and performing an ester interchange reaction to produce a polyethylene terephthalate monomer, followed by performing a polycondensation reaction so as to produce a polyethylene terephthalate polymer chain, the ester interchange reaction comprising charging the solution of graphene nanoplatelets dispersed in the solvent and powdered dimethyl terephthalate (DMT) into a reactor under nitrogen, wherein resultant dispersed graphene reinforcements comprise graphene nanoplatelets in the form of one or more layers of two-dimensional mono-atomic carbon sheets, the number of layers ranging between 1 and 7. Previously presented
The method of claim 8, wherein sonicating comprises selecting the period of time so as to desirably reduce a number of layers comprising the graphene nanoplatelets. Previously presented
The method of claim 8, wherein centrifuging comprises subjecting the solvent and graphene nanoplatelets to a rotational speed of centrifugation ranging between at least 1500 RPM and 4500 RPM. Original
The method of claim 8, wherein adding the graphene nanoplatelets further comprises selecting ethylene glycol as the solvent suitable for producing PET. Original
The method of claim 8, wherein the solvent further comprises ethylene glycol; and wherein performing the ester interchange reaction further comprises a nitrogen purge at a molar ratio of 2.3: 1 with a stoichiometric excess of ethylene glycol. Previously presented
Canceled
Canceled
Canceled
Materials described outside the worked examples.
graphene nanoplatelets
polyethylene terephthalate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
number of graphene nanoplatelet layers in dispersed reinforcement | 1–7 | graphene nanoplatelets |
graphene nanoplatelet weight fraction in PET composite (preferred upper bound) | ≤ 2 |
Patent
Atlas literature
Patent
US 11,472,938Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-7. Canceled
Canceled
A method for preparing graphene reinforced polyethylene terephthalate (PET), the method comprising: adding graphene nanoplatelets to a solvent suitable for producing PET; sonicating the solvent and graphene nanoplatelets utilizing a sonicator so as to cause a homogeneous dispersion of the graphene nanoplatelets within the solvent; centrifuging the solvent and graphene nanoplatelets to remove larger graphene nanoplatelets that are not suitably dispersed within the solvent; decanting a supernatant solution of graphene nanoplatelets dispersed in the solvent; and performing an ester interchange reaction to produce a polyethylene terephthalate monomer, followed by performing a polycondensation reaction so as to produce a polyethylene terephthalate polymer chain, the ester interchange reaction comprising charging the solution of graphene nanoplatelets dispersed in the solvent and powdered dimethyl terephthalate (DMT) into a reactor under nitrogen, wherein resultant dispersed graphene reinforcements comprise graphene nanoplatelets in the form of one or more layers of two-dimensional mono-atomic carbon sheets, the number of layers ranging between 1 and 7. Previously presented
The method of claim 8, wherein sonicating comprises selecting the period of time so as to desirably reduce a number of layers comprising the graphene nanoplatelets. Previously presented
The method of claim 8, wherein centrifuging comprises subjecting the solvent and graphene nanoplatelets to a rotational speed of centrifugation ranging between at least 1500 RPM and 4500 RPM. Original
The method of claim 8, wherein adding the graphene nanoplatelets further comprises selecting ethylene glycol as the solvent suitable for producing PET. Original
The method of claim 8, wherein the solvent further comprises ethylene glycol; and wherein performing the ester interchange reaction further comprises a nitrogen purge at a molar ratio of 2.3: 1 with a stoichiometric excess of ethylene glycol. Previously presented
Canceled
Canceled
Canceled
Materials described outside the worked examples.
graphene nanoplatelets
polyethylene terephthalate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
number of graphene nanoplatelet layers in dispersed reinforcement | 1–7 | graphene nanoplatelets |
graphene nanoplatelet weight fraction in PET composite (preferred upper bound) | ≤ 2 |
Patent
Atlas literature
Patent
US 11,472,938Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-7. Canceled
Canceled
A method for preparing graphene reinforced polyethylene terephthalate (PET), the method comprising: adding graphene nanoplatelets to a solvent suitable for producing PET; sonicating the solvent and graphene nanoplatelets utilizing a sonicator so as to cause a homogeneous dispersion of the graphene nanoplatelets within the solvent; centrifuging the solvent and graphene nanoplatelets to remove larger graphene nanoplatelets that are not suitably dispersed within the solvent; decanting a supernatant solution of graphene nanoplatelets dispersed in the solvent; and performing an ester interchange reaction to produce a polyethylene terephthalate monomer, followed by performing a polycondensation reaction so as to produce a polyethylene terephthalate polymer chain, the ester interchange reaction comprising charging the solution of graphene nanoplatelets dispersed in the solvent and powdered dimethyl terephthalate (DMT) into a reactor under nitrogen, wherein resultant dispersed graphene reinforcements comprise graphene nanoplatelets in the form of one or more layers of two-dimensional mono-atomic carbon sheets, the number of layers ranging between 1 and 7. Previously presented
The method of claim 8, wherein sonicating comprises selecting the period of time so as to desirably reduce a number of layers comprising the graphene nanoplatelets. Previously presented
The method of claim 8, wherein centrifuging comprises subjecting the solvent and graphene nanoplatelets to a rotational speed of centrifugation ranging between at least 1500 RPM and 4500 RPM. Original
The method of claim 8, wherein adding the graphene nanoplatelets further comprises selecting ethylene glycol as the solvent suitable for producing PET. Original
The method of claim 8, wherein the solvent further comprises ethylene glycol; and wherein performing the ester interchange reaction further comprises a nitrogen purge at a molar ratio of 2.3: 1 with a stoichiometric excess of ethylene glycol. Previously presented
Canceled
Canceled
Canceled
Materials described outside the worked examples.
graphene nanoplatelets
polyethylene terephthalate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
number of graphene nanoplatelet layers in dispersed reinforcement | 1–7 | graphene nanoplatelets |
graphene nanoplatelet weight fraction in PET composite (preferred upper bound) | ≤ 2 |
Patent
Atlas literature
Patent
US 11,472,938Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-7. Canceled
Canceled
A method for preparing graphene reinforced polyethylene terephthalate (PET), the method comprising: adding graphene nanoplatelets to a solvent suitable for producing PET; sonicating the solvent and graphene nanoplatelets utilizing a sonicator so as to cause a homogeneous dispersion of the graphene nanoplatelets within the solvent; centrifuging the solvent and graphene nanoplatelets to remove larger graphene nanoplatelets that are not suitably dispersed within the solvent; decanting a supernatant solution of graphene nanoplatelets dispersed in the solvent; and performing an ester interchange reaction to produce a polyethylene terephthalate monomer, followed by performing a polycondensation reaction so as to produce a polyethylene terephthalate polymer chain, the ester interchange reaction comprising charging the solution of graphene nanoplatelets dispersed in the solvent and powdered dimethyl terephthalate (DMT) into a reactor under nitrogen, wherein resultant dispersed graphene reinforcements comprise graphene nanoplatelets in the form of one or more layers of two-dimensional mono-atomic carbon sheets, the number of layers ranging between 1 and 7. Previously presented
The method of claim 8, wherein sonicating comprises selecting the period of time so as to desirably reduce a number of layers comprising the graphene nanoplatelets. Previously presented
The method of claim 8, wherein centrifuging comprises subjecting the solvent and graphene nanoplatelets to a rotational speed of centrifugation ranging between at least 1500 RPM and 4500 RPM. Original
The method of claim 8, wherein adding the graphene nanoplatelets further comprises selecting ethylene glycol as the solvent suitable for producing PET. Original
The method of claim 8, wherein the solvent further comprises ethylene glycol; and wherein performing the ester interchange reaction further comprises a nitrogen purge at a molar ratio of 2.3: 1 with a stoichiometric excess of ethylene glycol. Previously presented
Canceled
Canceled
Canceled
Materials described outside the worked examples.
graphene nanoplatelets
polyethylene terephthalate
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
number of graphene nanoplatelet layers in dispersed reinforcement | 1–7 | graphene nanoplatelets |
graphene nanoplatelet weight fraction in PET composite (preferred upper bound) | ≤ 2 |
ethylene glycol
manganese acetate
Mn(CH₃COO)2
antimony trioxide
Sb₂O₃
isophthalic acid
C₆H₄(COOH)2
stabilized cobalt
graphene reinforced polyethylene terephthalate composite
graphene reinforced polyethylene terephthalate composite |
graphene nanoplatelet weight fraction in PET composite (full claimed range) | 0.005–15 | graphene reinforced polyethylene terephthalate composite |
initial graphene nanoplatelet surface area range | 15–750 | graphene nanoplatelets |
Thickness | 6–8 nm | — |
Temperature | 0.000001 K | — |
Temperature | 0–300 K | — |
Duration | 3–4 hours | — |
Temperature | ≤ 60 °C | — |
Duration | ≥ 24 hours | — |
ethylene glycol
manganese acetate
Mn(CH₃COO)2
antimony trioxide
Sb₂O₃
isophthalic acid
C₆H₄(COOH)2
stabilized cobalt
graphene reinforced polyethylene terephthalate composite
graphene reinforced polyethylene terephthalate composite |
graphene nanoplatelet weight fraction in PET composite (full claimed range) | 0.005–15 | graphene reinforced polyethylene terephthalate composite |
initial graphene nanoplatelet surface area range | 15–750 | graphene nanoplatelets |
Thickness | 6–8 nm | — |
Temperature | 0.000001 K | — |
Temperature | 0–300 K | — |
Duration | 3–4 hours | — |
Temperature | ≤ 60 °C | — |
Duration | ≥ 24 hours | — |
ethylene glycol
manganese acetate
Mn(CH₃COO)2
antimony trioxide
Sb₂O₃
isophthalic acid
C₆H₄(COOH)2
stabilized cobalt
graphene reinforced polyethylene terephthalate composite
graphene reinforced polyethylene terephthalate composite |
graphene nanoplatelet weight fraction in PET composite (full claimed range) | 0.005–15 | graphene reinforced polyethylene terephthalate composite |
initial graphene nanoplatelet surface area range | 15–750 | graphene nanoplatelets |
Thickness | 6–8 nm | — |
Temperature | 0.000001 K | — |
Temperature | 0–300 K | — |
Duration | 3–4 hours | — |
Temperature | ≤ 60 °C | — |
Duration | ≥ 24 hours | — |
ethylene glycol
manganese acetate
Mn(CH₃COO)2
antimony trioxide
Sb₂O₃
isophthalic acid
C₆H₄(COOH)2
stabilized cobalt
graphene reinforced polyethylene terephthalate composite
graphene reinforced polyethylene terephthalate composite |
graphene nanoplatelet weight fraction in PET composite (full claimed range) | 0.005–15 | graphene reinforced polyethylene terephthalate composite |
initial graphene nanoplatelet surface area range | 15–750 | graphene nanoplatelets |
Thickness | 6–8 nm | — |
Temperature | 0.000001 K | — |
Temperature | 0–300 K | — |
Duration | 3–4 hours | — |
Temperature | ≤ 60 °C | — |
Duration | ≥ 24 hours | — |