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公开(公告)号：US11384035B2
公开(公告)日：2022-07-12
申请号：US17424426
申请日：2020-08-07
Applicant: LG CHEM, LTD.
Inventor： Eun Kyo Kim , Mi Kyung Kim , Joon Ho Shin , Hye Bin Kim
Abstract: Provided are a method for preparing an oligomer and an apparatus for preparing the same. The method for preparing an oligomer including: supplying a feed stream including a monomer to a reactor to perform an oligomerization reaction; supplying a first discharge stream from the reactor to a first separation device and supplying a second discharge stream from the reactor to a second separation device; recovering the monomer as an upper discharge stream from the second separation device and supplying a lower discharge stream from the second separation device to a third separation device; and supplying an upper discharge stream from the third separation device to the second separation device.
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公开(公告)号：US11472754B2
公开(公告)日：2022-10-18
申请号：US17422398
申请日：2020-08-12
Applicant: LG CHEM, LTD.
Inventor： Mi Kyung Kim , Eun Kyo Kim , Hye Bin Kim , Joon Ho Shin
Abstract: Provided are a method for preparing an oligomer and an apparatus for preparing an oligomer. The method for preparing an oligomer includes performing an oligomerization reaction by feeding a feed stream containing a monomer to a reactor; feeding a first discharge stream of the reactor to a first separation device, and feeding a second discharge stream of the reactor to a second separation device; feeding a lower discharge stream of the second separation device to a third separation device; feeding an upper discharge stream containing the monomer of the third separation device to a monomer dissolution device and dissolving the upper discharge stream in a solvent fed to the monomer dissolution device; and feeding a discharge stream of the monomer dissolution device to the reactor.
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公开(公告)号：US10693182B2
公开(公告)日：2020-06-23
申请号：US16073492
申请日：2017-11-22
Applicant: LG Chem, Ltd.
Inventor： Hye Bin Kim , Jong Keon Yoon , Song Taek Oh , Jung Seok Choi
IPC: H01M10/0525 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525 , H01M4/02 , H01M10/052
Abstract: Provided is a method for manufacturing a positive electrode for a secondary battery, the method including applying a first positive electrode slurry including a first positive electrode active material on a positive electrode current collector, forming a first positive electrode mixture layer by primarily rolling the current collector applied with the first positive electrode slurry, applying a second positive electrode slurry including a second positive electrode active material on the above-formed first positive electrode mixture layer, and forming a second positive electrode mixture layer on which the first positive electrode mixture layer is laminated by secondarily rolling the first positive electrode mixture layer applied with the second positive electrode slurry.
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公开(公告)号：US11332418B2
公开(公告)日：2022-05-17
申请号：US17281198
申请日：2020-08-07
Applicant: LG CHEM, LTD.
Inventor： Eun Kyo Kim , Mi Kyung Kim , Joon Ho Shin , Hye Bin Kim
Abstract: A method and an apparatus for preparing an oligomer, the method including supplying a feed stream including a monomer to a reactor to perform an oligomerization reaction, recovering unreacted monomer, and dissolving the recovered unreacted monomer in a solvent in a monomer dissolution device and supplying a discharge stream from the monomer dissolution device to the reactor. The method and the apparatus provide reduced investment costs and improved economic feasibility as there is no need to use a refrigerant at a very low temperature or install a separate compressor to recover and reuse the unreacted monomer in an oligomer production process.
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公开(公告)号：US20210340079A1
公开(公告)日：2021-11-04
申请号：US17281081
申请日：2020-08-04
Applicant: LG CHEM, LTD.
Inventor： Hye Bin Kim , Eun Kyo Kim , Mi Kyung Kim , Joon Ho Shin
Abstract: A method and an apparatus for preparing an alpha-olefin. The method includes supplying a feed stream including a gaseous ethylene monomer to a monomer dissolution device to dissolve the feed stream in a solvent and form a liquid ethylene monomer, and supplying a feed stream including the liquid ethylene monomer as a discharge stream to a reactor, thereby removing heat of dissolution of the gaseous ethylene monomer outside of the reactor, and decreasing an amount of a refrigerant used in an alpha-olefin production process to improve economic feasibility.
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Patent Agency Ranking
公开(公告)号：US10686215B2
公开(公告)日：2020-06-16
申请号：US16070071
申请日：2017-11-20
Applicant: LG Chem, Ltd.
Inventor： Hye Bin Kim , Jong Keon Yoon , Song Taek Oh , Jung Seok Choi
Abstract: Provided is a positive electrode for a secondary battery, the positive electrode including a positive electrode current collector, a first positive electrode mixture layer laminated on the positive electrode current collector and including a first positive electrode active material and a first conductive material, and a second positive electrode mixture layer laminated on the first positive electrode mixture layer and including a second positive electrode active material and a second conductive material, wherein the average particle diameter (D50) of the second positive electrode active material is 5 to 80% of the average particle diameter (D50) of the first positive electrode active material, and the ratio of the specific surface area of the second conductive material to the specific surface area of the second positive electrode active material is 9 or less.
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公开(公告)号：US11254624B2
公开(公告)日：2022-02-22
申请号：US17281081
申请日：2020-08-04
Applicant: LG CHEM, LTD.
Inventor： Hye Bin Kim , Eun Kyo Kim , Mi Kyung Kim , Joon Ho Shin
Abstract: A method and an apparatus for preparing an alpha-olefin. The method includes supplying a feed stream including a gaseous ethylene monomer to a monomer dissolution device to dissolve the feed stream in a solvent and form a liquid ethylene monomer, and supplying a feed stream including the liquid ethylene monomer as a discharge stream to a reactor, thereby removing heat of dissolution of the gaseous ethylene monomer outside of the reactor, and decreasing an amount of a refrigerant used in an alpha-olefin production process to improve economic feasibility.
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公开(公告)号：US20200020906A1
公开(公告)日：2020-01-16
申请号：US16491047
申请日：2018-11-06
Applicant: LG Chem, Ltd.
Inventor： Hye Bin Kim , Hyeok Moo Lee , Song Taek Oh
Abstract: The present invention relates to an electrode for a secondary battery having improved safety, a method for manufacturing the electrode, and a secondary battery including the electrode. The secondary battery according to the present invention includes a plurality of apertures that penetrate a current collector and an electrode active material layer in a thickness direction. The electrode may improve safety by preventing or minimizing the occurrence of ignition or explosion when a sharp object such as a nail penetrates into the interior of a battery, thereby improving safety of the battery.
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9.发明申请公开(公告)号：US20190036154A1
公开(公告)日：2019-01-31
申请号：US16070071
申请日：2017-11-20
Applicant: LG Chem, Ltd.
Inventor： Hye Bin Kim , Jong Keon Yoon , Song Taek Oh , Jung Seok Choi
Abstract: Provided is a positive electrode for a secondary battery, the positive electrode including a positive electrode current collector, a first positive electrode mixture layer laminated on the positive electrode current collector and including a first positive electrode active material and a first conductive material, and a second positive electrode mixture layer laminated on the first positive electrode mixture layer and including a second positive electrode active material and a second conductive material, wherein the average particle diameter (D50) of the second positive electrode active material is 5 to 80% of the average particle diameter (D50) of the first positive electrode active material, and the ratio of the specific surface area of the second conductive material to the specific surface area of the second positive electrode active material is 9 or less.
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10.发明申请公开(公告)号：US20190013545A1
公开(公告)日：2019-01-10
申请号：US16073492
申请日：2017-11-22
Applicant: LG Chem, Ltd.
Inventor： Hye Bin Kim , Jong Keon Yoon , Song Taek Oh , Jung Seok Choi
IPC: H01M10/0525 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M4/525
Abstract: Provided is a method for manufacturing a positive electrode for a secondary battery, the method including applying a first positive electrode slurry including a first positive electrode active material on a positive electrode current collector, forming a first positive electrode mixture layer by primarily rolling the current collector applied with the first positive electrode slurry, applying a second positive electrode slurry including a second positive electrode active material on the above-formed first positive electrode mixture layer, and forming a second positive electrode mixture layer on which the first positive electrode mixture layer is laminated by secondarily rolling the first positive electrode mixture layer applied with the second positive electrode slurry.
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