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公开(公告)号：US12116445B2
公开(公告)日：2024-10-15
申请号：US17602048
申请日：2020-05-15
申请人： LG Chem, Ltd.
发明人： Ji Hyun Park , Dae Woong Lee , Sung Hyun Park , Seok Pil Sa , Seul Ki Im , Hyun Mo Lee , Yun Kon Kim , Ki Soo Lee , Myung Han Lee , Eun Ji Shin
IPC分类号： C08F297/02 , C08F2/38 , C08F10/14 , C08F12/08
CPC分类号： C08F297/02 , C08F2/38 , C08F10/14 , C08F12/08
摘要： A polyolefin-polystyrene multi-block copolymer and method of making the same is disclosed herein. In some embodiments, a polyolefin-polystyrene multi-block copolymer having a ratio of a loss modulus (E″) to a storage modulus (E′) satisfying the following conditions (a) and (b) over a temperature range of −80° C. to 40° C., wherein the ratio is represented by a loss tangent (tan δ) value and is obtained by dynamic mechanical analysis (DMA), (a) a maximum of the tan δ value in a peak present in the temperature range is 0.20 to 0.35, and (b) a half-width of the peak ranges from 32.0° C. to 50.0° C. The polyolefin-polystyrene multi-block copolymer has a structure in which polystyrene chains are attached to both ends of a polyolefin chain.
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公开(公告)号：US11964870B2
公开(公告)日：2024-04-23
申请号：US17059945
申请日：2019-07-22
申请人： LG CHEM, LTD.
发明人： Kyung Yeon Kang , Hyun Joon Kang , Ki Soo Lee
CPC分类号： C01B32/162 , B01J21/02 , B01J23/22 , B01J27/25 , B01J31/122 , B01J37/08 , C01P2004/13 , C01P2004/64 , C01P2006/12
摘要： The present invention relates to a method for preparing carbon nanotubes, the method including: preparing a support including AlO(OH) by primary heat treatment of Al(OH)3; preparing an active carrier by supporting a mixture including a main catalyst precursor and a cocatalyst precursor on the support; drying the active carrier through multi-stage drying including vacuum drying; preparing a supported catalyst by secondary heat treatment of the dried active support; and preparing carbon nanotubes in the presence of the supported catalyst, and the carbon nanotubes prepared by the method as described above can remarkably improve conductivity.
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公开(公告)号：US11913935B2
公开(公告)日：2024-02-27
申请号：US17059724
申请日：2019-06-21
申请人： LG Chem, Ltd.
发明人： Hyunsup Lee , Seong Min Chae , Kyung Seop Noh , Heekwang Park , Ki Soo Lee , Sangjin Jeon , Myunghan Lee
IPC分类号： G01N33/36 , D04H1/4291 , D04H1/56 , D04H3/007
CPC分类号： G01N33/367 , D04H1/4291 , D04H1/565 , D04H3/007 , G01N2203/0075
摘要： The present invention relates to polypropylene non-woven fabric having excellent loft property, a method for preparing polypropylene non-woven fabric having excellent loft property, and a method for evaluating the properties of the polypropylene resin.
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公开(公告)号：US11511994B2
公开(公告)日：2022-11-29
申请号：US17258306
申请日：2019-07-26
申请人： LG CHEM, LTD.
发明人： Kyung Yeon Kang , Hyun Joon Kang , Ki Soo Lee , Soon Ki Jeong
IPC分类号： C01B32/158 , B01J23/648 , B01J23/652 , B01J37/08 , H01M4/08 , H01M4/96 , H01M4/02
摘要： The present invention relates to carbon nanotubes having a pore volume of 0.94 cm3/g or more, and being an entangled type, a method of manufacturing the same, and a positive electrode for a primary battery which comprises the same.
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公开(公告)号：US20220267486A1
公开(公告)日：2022-08-25
申请号：US17619510
申请日：2020-10-29
申请人： LG Chem, Ltd.
发明人： Yong Woo Kwon , Ki Soo Lee , Seung Mi Lee , Jung Won Lee , Hyun Jee Kwon , Po Eun Kim , Jae Hoon Choi , Jong Hyun Kim
IPC分类号： C08F4/6592 , C08F4/659 , C08F210/02 , C08F210/14
摘要： The present invention relates to: a method for producing a metallocene-supported catalyst, the method including (1) a step of producing a reaction solution 1 by reacting one or more metallocene compounds with one or more co-catalyst compounds, (2) a step of performing supporting by mixing a support with the reaction solution 1, (3) a step of producing a reaction solution 2 by reacting one or more metallocene compounds with one or more co-catalyst compounds, and (4) a step of mixing the reaction solution 2 with the supporting material of the step (2); and a metallocene-supported catalyst produced by the same.
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公开(公告)号：US11292165B2
公开(公告)日：2022-04-05
申请号：US16610731
申请日：2017-09-29
申请人： LG CHEM, LTD
发明人： Hyun Sup Lee , Soon Ho Sun , Yi Young Choi , Ki Soo Lee , Bog Ki Hong , Sung Hyun Park , Myung Han Lee , Chang Kwon Chung
摘要： The present application relates to a method for selecting an injection-molded article and a method for manufacturing an injection-molded article. An injection-molded article having excellent crack stability can be produced using the material selected using the described selection method without having to manufacture test articles through injection molding.
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公开(公告)号：US20210139331A1
公开(公告)日：2021-05-13
申请号：US17258306
申请日：2019-07-26
申请人： LG CHEM, LTD.
发明人： Kyung Yeon Kang , Hyun Joon Kang , Ki Soo Lee , Soon Ki Jeong
IPC分类号： C01B32/158 , H01M4/96 , H01M4/08 , B01J23/648 , B01J23/652 , B01J37/08
摘要： The present invention relates to carbon nanotubes having a pore volume of 0.94 cm3/g or more, and being an entangled type, a method of manufacturing the same, and a positive electrode for a primary battery which comprises the same.
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公开(公告)号：US10976229B2
公开(公告)日：2021-04-13
申请号：US16090732
申请日：2017-08-31
申请人： LG Chem, Ltd.
发明人： Hyun Sup Lee , Ki Soo Lee , Sang Jin Jeon , Sang Eun An , Myung Han Lee , Hee Kwang Park , Sang Eun Kim , Sang Hoon Lee
摘要： The present invention relates to a method for predicting the break-up possibility of a synthetic resin filament in a melt blowing process from the rheological properties of the synthetic resin. According to the present invention, a method that is capable of predicting the break-up possibility of the synthetic resin filament in the melt blowing process for preparing a filament using the synthetic resin in advance, through the measurement of the rheological properties of the synthetic resin, is provided.
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公开(公告)号：US10962522B2
公开(公告)日：2021-03-30
申请号：US15768968
申请日：2017-10-12
申请人： LG Chem, Ltd.
发明人： Yoon Ki Hong , Hyuck Ju Kwon , Eun Kyoung Song , Dae Sik Hong , Ye Jin Lee , Joong Soo Kim , Eun Young Shin , Young Suk You , Ki Soo Lee
摘要： The present invention relates to a method for predicting the physical properties of polymers. More specifically, the present invention relates to a method for predicting the processability of polymers using a molecular weight distribution curve.
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公开(公告)号：US20210080367A1
公开(公告)日：2021-03-18
申请号：US16640864
申请日：2018-08-21
申请人： LG Chem, Ltd.
发明人： Hyunsup Lee , Sung Hyun Park , Soon Ho Sun , Yi Young Choi , Ki Soo Lee , Myung Han Lee
IPC分类号： G01N11/08 , B29C45/00 , G01N25/04 , C08F210/16
摘要： The present invention relates to a method for evaluating an injection physical property of a plastic resin, and a polyethylene resin suitable for an injection molding process and, more particularly, to a novel method for evaluating an injection physical property of a plastic resin, which, when a particular plastic resin is processed by an injection process, can accurately derive injection suitability of the plastic resin and injection pressure in the injection process through a physical property value measured by using a resin specimen, and a polyethylene resin suitable for injection molding.
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