Patent
US 11,407,638Hexagonal boron nitride powder and process for producing hexagonal boron nitride powder
Shota DAIKI
US
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Patent
Atlas literature
Patent
US 11,407,638Patent 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.
A hexagonal boron nitride powder containing hexagonal boron nitride agglomerates and having a maximum torque of 0.20 to 0.50 Nm, a DBP absorption rate of 50 to 100 ml/100 g and a tap bulk density of 0.66 to 0.95 g/c m, wherein the maximum torque and the DBP absorption rate are calculated by measuring in accordance with JIS-K⁻⁶² 1 7-4. Original
The hexagonal boron nitride powder according to claim 1, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 1, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 1. Withdrawn
The hexagonal boron nitride powder according to claim I, wherein the specific surface area is 1.31 to 7.0 m 2/g. Original
The hexagonal boron nitride powder according to claim 2, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 2, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 2. Withdrawn
A resin composition obtained by filling a mixture claim 2 and an aluminum oxide powder and/or
A resin composition obtained by filling a mixture of the hexagonal boron nitride powder of claim I and an aluminum oxide powder and/or aluminum nitride powder. Withdrawn
A radiation insulation sheet comprising the of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn resin composition of claim 6. Withdrawn
A process for producing a hexagonal boron nitride powder, comprising the steps of: mixing together an oxygen-containing boron compound, a carbon source, an oxygen- containing calcium compound and boron carbide to ensure that the B/C ratio (elemental ratio) of B contained in the oxygen-containing boron compound to C contained in the carbon source becomes 0.75 to 1.05, the amount of the oxygen-containing calcium compound becomes 5 to 20 parts by mass in terms of Ca O based on 100 parts by mass of the total in terms of B 2 0 3 of the oxygen-containing boron compound and C of the carbon source, and the amount of the boron carbide becomes 10 to parts by mass based on 100 parts by mass of the total in terms of B 2 0 3, C and Ca O of the oxygen-containing boron compound, the carbon source and the oxygen- containing calcium compound, respectively; and heating the mixture in a nitrogen atmosphere at 1,700 to 2,100 ° C to reduction nitride it. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
radiation insulation sheet (heat-conductive insulating sheet)
radiation insulation member for electronic parts
Materials described outside the worked examples.
hexagonal boron nitride powder
BN
resin
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
maximum torque (JIS-K-6217-4) | 0.2–0.5 | BN |
DBP absorption rate (JIS-K-6217-4) | 50–100 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,407,638Patent 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.
A hexagonal boron nitride powder containing hexagonal boron nitride agglomerates and having a maximum torque of 0.20 to 0.50 Nm, a DBP absorption rate of 50 to 100 ml/100 g and a tap bulk density of 0.66 to 0.95 g/c m, wherein the maximum torque and the DBP absorption rate are calculated by measuring in accordance with JIS-K⁻⁶² 1 7-4. Original
The hexagonal boron nitride powder according to claim 1, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 1, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 1. Withdrawn
The hexagonal boron nitride powder according to claim I, wherein the specific surface area is 1.31 to 7.0 m 2/g. Original
The hexagonal boron nitride powder according to claim 2, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 2, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 2. Withdrawn
A resin composition obtained by filling a mixture claim 2 and an aluminum oxide powder and/or
A resin composition obtained by filling a mixture of the hexagonal boron nitride powder of claim I and an aluminum oxide powder and/or aluminum nitride powder. Withdrawn
A radiation insulation sheet comprising the of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn resin composition of claim 6. Withdrawn
A process for producing a hexagonal boron nitride powder, comprising the steps of: mixing together an oxygen-containing boron compound, a carbon source, an oxygen- containing calcium compound and boron carbide to ensure that the B/C ratio (elemental ratio) of B contained in the oxygen-containing boron compound to C contained in the carbon source becomes 0.75 to 1.05, the amount of the oxygen-containing calcium compound becomes 5 to 20 parts by mass in terms of Ca O based on 100 parts by mass of the total in terms of B 2 0 3 of the oxygen-containing boron compound and C of the carbon source, and the amount of the boron carbide becomes 10 to parts by mass based on 100 parts by mass of the total in terms of B 2 0 3, C and Ca O of the oxygen-containing boron compound, the carbon source and the oxygen- containing calcium compound, respectively; and heating the mixture in a nitrogen atmosphere at 1,700 to 2,100 ° C to reduction nitride it. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
radiation insulation sheet (heat-conductive insulating sheet)
radiation insulation member for electronic parts
Materials described outside the worked examples.
hexagonal boron nitride powder
BN
resin
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
maximum torque (JIS-K-6217-4) | 0.2–0.5 | BN |
DBP absorption rate (JIS-K-6217-4) | 50–100 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,407,638Patent 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.
A hexagonal boron nitride powder containing hexagonal boron nitride agglomerates and having a maximum torque of 0.20 to 0.50 Nm, a DBP absorption rate of 50 to 100 ml/100 g and a tap bulk density of 0.66 to 0.95 g/c m, wherein the maximum torque and the DBP absorption rate are calculated by measuring in accordance with JIS-K⁻⁶² 1 7-4. Original
The hexagonal boron nitride powder according to claim 1, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 1, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 1. Withdrawn
The hexagonal boron nitride powder according to claim I, wherein the specific surface area is 1.31 to 7.0 m 2/g. Original
The hexagonal boron nitride powder according to claim 2, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 2, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 2. Withdrawn
A resin composition obtained by filling a mixture claim 2 and an aluminum oxide powder and/or
A resin composition obtained by filling a mixture of the hexagonal boron nitride powder of claim I and an aluminum oxide powder and/or aluminum nitride powder. Withdrawn
A radiation insulation sheet comprising the of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn resin composition of claim 6. Withdrawn
A process for producing a hexagonal boron nitride powder, comprising the steps of: mixing together an oxygen-containing boron compound, a carbon source, an oxygen- containing calcium compound and boron carbide to ensure that the B/C ratio (elemental ratio) of B contained in the oxygen-containing boron compound to C contained in the carbon source becomes 0.75 to 1.05, the amount of the oxygen-containing calcium compound becomes 5 to 20 parts by mass in terms of Ca O based on 100 parts by mass of the total in terms of B 2 0 3 of the oxygen-containing boron compound and C of the carbon source, and the amount of the boron carbide becomes 10 to parts by mass based on 100 parts by mass of the total in terms of B 2 0 3, C and Ca O of the oxygen-containing boron compound, the carbon source and the oxygen- containing calcium compound, respectively; and heating the mixture in a nitrogen atmosphere at 1,700 to 2,100 ° C to reduction nitride it. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
radiation insulation sheet (heat-conductive insulating sheet)
radiation insulation member for electronic parts
Materials described outside the worked examples.
hexagonal boron nitride powder
BN
resin
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
maximum torque (JIS-K-6217-4) | 0.2–0.5 | BN |
DBP absorption rate (JIS-K-6217-4) | 50–100 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 11,407,638Patent 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.
A hexagonal boron nitride powder containing hexagonal boron nitride agglomerates and having a maximum torque of 0.20 to 0.50 Nm, a DBP absorption rate of 50 to 100 ml/100 g and a tap bulk density of 0.66 to 0.95 g/c m, wherein the maximum torque and the DBP absorption rate are calculated by measuring in accordance with JIS-K⁻⁶² 1 7-4. Original
The hexagonal boron nitride powder according to claim 1, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 1, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 1. Withdrawn
The hexagonal boron nitride powder according to claim I, wherein the specific surface area is 1.31 to 7.0 m 2/g. Original
The hexagonal boron nitride powder according to claim 2, wherein the particle diameter at a cumulative volume frequency of 90 % in particle size distribution measured by a wet laser diffraction particle size distribution method is 50 to 150 pm. Previously presented
The hexagonal boron nitride powder according to claim 2, wherein the purity of boron nitride is not less than 99.95 mass %. Previously presented
A resin composition obtained by filling the hexagonal boron nitride powder of claim 2. Withdrawn
A resin composition obtained by filling a mixture claim 2 and an aluminum oxide powder and/or
A resin composition obtained by filling a mixture of the hexagonal boron nitride powder of claim I and an aluminum oxide powder and/or aluminum nitride powder. Withdrawn
A radiation insulation sheet comprising the of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn of the hexagonal boron nitride powder of aluminum nitride powder. Withdrawn resin composition of claim 6. Withdrawn
A process for producing a hexagonal boron nitride powder, comprising the steps of: mixing together an oxygen-containing boron compound, a carbon source, an oxygen- containing calcium compound and boron carbide to ensure that the B/C ratio (elemental ratio) of B contained in the oxygen-containing boron compound to C contained in the carbon source becomes 0.75 to 1.05, the amount of the oxygen-containing calcium compound becomes 5 to 20 parts by mass in terms of Ca O based on 100 parts by mass of the total in terms of B 2 0 3 of the oxygen-containing boron compound and C of the carbon source, and the amount of the boron carbide becomes 10 to parts by mass based on 100 parts by mass of the total in terms of B 2 0 3, C and Ca O of the oxygen-containing boron compound, the carbon source and the oxygen- containing calcium compound, respectively; and heating the mixture in a nitrogen atmosphere at 1,700 to 2,100 ° C to reduction nitride it. Withdrawn
Layer stacks claimed or described, ordered top of device to substrate.
radiation insulation sheet (heat-conductive insulating sheet)
radiation insulation member for electronic parts
Materials described outside the worked examples.
hexagonal boron nitride powder
BN
resin
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
maximum torque (JIS-K-6217-4) | 0.2–0.5 | BN |
DBP absorption rate (JIS-K-6217-4) | 50–100 |
Related documents with shared materials, methods, properties, or citations.
aluminum oxide powder
Al₂O₃
aluminum nitride powder
AlN
oxygen-containing boron compound
carbon source
oxygen-containing calcium compound
boron carbide
B₄C
tap bulk density | 0.66–0.95 | BN |
specific surface area | 1.31–7 | BN |
D90 particle diameter (wet laser diffraction) | 50–150 | BN |
boron nitride purity | ≥ 99.95 | BN |
— | ≤ 14 W | — |
Temperature | ≤ 40 k | — |
Thickness | 0.2–0.5 Nm | — |
Pressure | 5–20 pa | — |
Pressure | 10–45 pa | — |
Temperature | 1700–2100 °C | — |
Effects of spin-orbit coupling in a valley chiral kagome network
aluminum oxide powder
Al₂O₃
aluminum nitride powder
AlN
oxygen-containing boron compound
carbon source
oxygen-containing calcium compound
boron carbide
B₄C
tap bulk density | 0.66–0.95 | BN |
specific surface area | 1.31–7 | BN |
D90 particle diameter (wet laser diffraction) | 50–150 | BN |
boron nitride purity | ≥ 99.95 | BN |
— | ≤ 14 W | — |
Temperature | ≤ 40 k | — |
Thickness | 0.2–0.5 Nm | — |
Pressure | 5–20 pa | — |
Pressure | 10–45 pa | — |
Temperature | 1700–2100 °C | — |
Effects of spin-orbit coupling in a valley chiral kagome network
aluminum oxide powder
Al₂O₃
aluminum nitride powder
AlN
oxygen-containing boron compound
carbon source
oxygen-containing calcium compound
boron carbide
B₄C
tap bulk density | 0.66–0.95 | BN |
specific surface area | 1.31–7 | BN |
D90 particle diameter (wet laser diffraction) | 50–150 | BN |
boron nitride purity | ≥ 99.95 | BN |
— | ≤ 14 W | — |
Temperature | ≤ 40 k | — |
Thickness | 0.2–0.5 Nm | — |
Pressure | 5–20 pa | — |
Pressure | 10–45 pa | — |
Temperature | 1700–2100 °C | — |
Effects of spin-orbit coupling in a valley chiral kagome network
aluminum oxide powder
Al₂O₃
aluminum nitride powder
AlN
oxygen-containing boron compound
carbon source
oxygen-containing calcium compound
boron carbide
B₄C
tap bulk density | 0.66–0.95 | BN |
specific surface area | 1.31–7 | BN |
D90 particle diameter (wet laser diffraction) | 50–150 | BN |
boron nitride purity | ≥ 99.95 | BN |
— | ≤ 14 W | — |
Temperature | ≤ 40 k | — |
Thickness | 0.2–0.5 Nm | — |
Pressure | 5–20 pa | — |
Pressure | 10–45 pa | — |
Temperature | 1700–2100 °C | — |