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公开(公告)号：US11618679B2
公开(公告)日：2023-04-04
申请号：US16628555
申请日：2018-11-27
申请人： LG CHEM, LTD.
发明人： Sung Jin Kim , Dong Hyun Cho , Jae Keun Yoon , Tae Hyung Kim , Og Sin Kim
IPC分类号： C01B32/158 , C01B32/162 , B01J21/04 , B01J23/847 , B01J37/02 , B01J37/04 , B01J37/08 , B82Y30/00 , B82Y40/00
摘要： The present invention relates to entangled-type carbon nanotubes which have a bulk density of 31 kg/m3 to 85 kg/m3 and a ratio of tapped bulk density to bulk density of 1.37 to 2.05, and a method for preparing the entangled-type carbon nanotubes.
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公开(公告)号：US20230098226A1
公开(公告)日：2023-03-30
申请号：US17910228
申请日：2022-01-10
申请人： LG Chem, Ltd.
发明人： Kyung Seog Youk , Jong Hun Song , Min Ho Sun , Hong Min Lee , Hyun Seok Kim , Moon Sub Hwang , Jeong Seok Lee
IPC分类号： C07C2/08 , C07C7/09 , C07C7/152 , C07C11/107
摘要： Provided is a method for preparing an oligomer including: supplying a monomer stream and a solvent stream to a reactor to perform an oligomerization reaction to prepare a reaction product; supplying a discharge stream from the reactor including the reaction product to a separation device and supplying a lower discharge stream from the separation device to a settling tank; adding an organic flocculant to the settling tank to settle and remove a polymer and supplying the lower discharge stream from the separation device from which the polymer is removed to a high boiling point separation column; and removing a high boiling point material from the lower portion in the high boiling point separation column and supplying an upper discharge stream including an oligomer to a solvent separation column.
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公开(公告)号：US20230096686A1
公开(公告)日：2023-03-30
申请号：US17784085
申请日：2021-08-09
申请人： LG CHEM, LTD.
发明人： Changsub KIM , Joongsoo KIM , Yeonsoo KIM , Bog Ki HONG , Sol CHO , Hyojoon LEE , Jung Wook WEE
IPC分类号： C08F210/16
摘要： Provided are a pellet-type polyethylene resin composition capable of improving pipe pressure resistance property, dimensional stability, and processability at the same time, and a method of preparing the same.
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公开(公告)号：US11613613B2
公开(公告)日：2023-03-28
申请号：US16770414
申请日：2018-11-29
申请人： LG Chem, Ltd.
发明人： Bohee Park , Dae Woo Nam , Young Jae Hur , Yeon Woo Hong , Jiyoon Jeong
摘要： The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6, a hydrophilic polymer and a surface cross-linking agent are mixed into a base resin, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.
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公开(公告)号：US20230089009A1
公开(公告)日：2023-03-23
申请号：US17802796
申请日：2021-09-07
申请人： LG Chem, Ltd.
发明人： Kiyoul Yoon , Seongkyun Kang , Yu Jin Kim , Gicheul Kim , Hyeon Choi , Se Yeol Park
摘要： The present disclosure relates to a polymer film, a preparation method of the same, and a polymer film laminate. Specifically, it relates to a new type of polymer film, which is thin and exhibits excellent absorption performance while having excellent flexibility and mechanical properties. In addition, the polymer film is free from scattering or leaking, and does not require an auxiliary substance such as pulp, so that products can be made thinner and the manufacturing process and costs may be reduced. In addition, the present disclosure also relates to a preparation method of the above-described polymer film, and a polymer film laminate including the new type of polymer film.
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公开(公告)号：US20230087740A1
公开(公告)日：2023-03-23
申请号：US17793720
申请日：2021-01-29
申请人： LG Chem, Ltd.
发明人： Jin Hoo Jeong , Jun Seong Ahn , Myung Gi Jeong , Jun Won Lee
摘要： A positive electrode active material precursor for a secondary battery, which is a secondary particle in which primary particles are aggregated, includes a core portion including nickel (Ni), cobalt (Co), and manganese (Mn), and a shell portion surrounding a surface of the core portion and including nickel (Ni), cobalt (Co), manganese (Mn), and aluminum (Al), wherein the core portion and the shell portion has rod-shaped primary particles, and an average major axis length of the primary particles of the shell portion is smaller than an average major axis length of the primary particles of the core portion. A method of preparing the positive electrode active material precursor, and a positive electrode active material prepared by using the positive electrode active material precursor are also provided.
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公开(公告)号：US20230086039A1
公开(公告)日：2023-03-23
申请号：US17617111
申请日：2021-03-11
申请人： LG CHEM, LTD.
发明人： Minjun KIM , Dong Hoon LEE , Yongbum CHA , Sang Duk SUH , Young Seok KIM , Joongsuk OH , Seoyeon KIM
IPC分类号： H01L51/00 , C07D405/04 , C09K11/06 , C07D409/14 , C07D405/14 , C07D405/10 , C07C211/54 , C07D307/91 , C07D333/76 , C07C211/61 , C07D409/12
摘要： Provided is an organic light emitting device comprising a light emitting layer comprising a compound of Chemical Formula 1 and a compound of Chemical Formula 2: wherein: Ar1, Ar2, Ar4 and Ar5 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing N, O or S; Ar3 is hydrogen, or a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing N, O or S; L1 to L3 are each independently a single bond or a substituted or unsubstituted C6-60 arylene; L4 to L6 are each independently a single bond or a substituted or unsubstituted C6-60 arylene or C2-60 heteroarylene containing N, O or S; L7 is a substituted or unsubstituted C6-60 arylene; R1 is hydrogen, deuterium, or a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing one or of N, O and S; a is 0 to 7.
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公开(公告)号：US11611114B2
公开(公告)日：2023-03-21
申请号：US16763504
申请日：2019-01-22
申请人： LG CHEM, LTD.
发明人： Yee Gahng Song , Seung Min Lee
IPC分类号： H01M10/48 , H01M10/63 , H01M10/6563
摘要： A system and method for detecting swelling of a battery cell using a temperature sensor pre-mounted on a battery module without a separate additional device.
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公开(公告)号：US11611077B2
公开(公告)日：2023-03-21
申请号：US16647307
申请日：2018-08-29
申请人： LG Chem, Ltd.
发明人： Chi Ho Jo , Min Kyu You , Sung Bin Park , Hyuck Hur , Jin Tae Hwang , Wang Mo Jung
IPC分类号： H01M4/525 , H01M4/04 , H01M4/131 , H01M4/36 , H01M10/0525 , H01M10/0569 , H01M4/02
摘要： A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.
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公开(公告)号：US11611066B2
公开(公告)日：2023-03-21
申请号：US16631691
申请日：2018-10-29
申请人： LG CHEM, LTD.
发明人： Soohyun Kim , Suenghoon Han , Kwonnam Sohn , Doo Kyung Yang
IPC分类号： H01M4/36 , H01M4/38 , H01M4/587 , H01M10/052 , C01B32/168 , C01B32/21 , H01M4/02
摘要： A method for preparing a sulfur-carbon composite including: (a) stirring a porous carbon material in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) mixing the dried porous carbon material with sulfur and then depositing the sulfur in and on the porous carbon material by a heat melting method. A method for preparing a sulfur-carbon composite including: (a) mixing and stirring a porous carbon material and sulfur in a solvent mixture including a carbonate-based compound and a volatile solvent and then drying; and (b) depositing the sulfur in and on the porous carbon material by a heat melting method. In the sulfur-carbon composite, sulfur present in and on the porous carbon material, a proportion of β-monoclinic sulfur phase to sulfur contained in the sulfur-carbon composite is 90% or more based on a total molar ratio of sulfur.
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