公开(公告)号：US11970445B2

公开(公告)日：2024-04-30

申请号：US17054729

申请日：2019-09-27

Applicant: LG CHEM, LTD.

Inventor： Sanghwan Jo ,  Joong Jin Han ,  Hansol Kim

IPC: C07D207/267 ,  B01D3/14 ,  B01D3/40 ,  C08G75/0259 ,  C08G75/0281

CPC classification number: C07D207/267 ,  B01D3/141 ,  B01D3/40 ,  C08G75/0259 ,  C08G75/0281

Abstract: There is provided a method and an apparatus for efficiently recovering an amide-based compound such as N-methyl-2-pyrrolidone from an aqueous solution containing an amide-based compound such as N-methyl-2-pyrrolidone.

公开(公告)号：US11414521B2

公开(公告)日：2022-08-16

申请号：US17047341

申请日：2019-07-03

Applicant: LG CHEM, LTD.

Inventor： Kwonsu Jung ,  Joong Jin Han ,  Eunju Park ,  Hyun Woog Ryu ,  Hansol Kim

IPC: C08G75/0259 ,  C08G75/0213 ,  C08G75/0254 ,  C08G75/0281

Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by using a dihalogenated aromatic compound in a predetermined equivalent ratio with respect to a sulfur compound and performing both dehydration and polymerization under optimum conditions.

公开(公告)号：US11407860B2

公开(公告)日：2022-08-09

申请号：US16462771

申请日：2018-01-12

Applicant: LG CHEM, LTD.

Inventor： Kwonsu Jung ,  Joong Jin Han ,  Eunju Park ,  Hyun Woog Ryu

IPC: C08G75/0222 ,  C08G75/0254 ,  C08G75/0281

Abstract: A method for preparing polyarylene sulfide that can control a viscosity grade thereof by adjusting the molar ratio of water and amide-based compounds present in a polymerization reaction.

公开(公告)号：US11220441B2

公开(公告)日：2022-01-11

申请号：US16967085

申请日：2019-11-15

Applicant: LG CHEM, LTD.

Inventor： Sanghwan Jo ,  Joong Jin Han ,  Hansol Kim

IPC: C02F1/04 ,  C08J11/02 ,  C02F101/38

Abstract: There is provided a method for efficiently recovering amide-based compounds such as N-methyl-2-pyrrolidone from a waste liquid containing amide-based compounds such as N-methyl-2-pyrrolidone generated, for example, in a production process of polyarylene sulfide.

公开(公告)号：US11192981B2

公开(公告)日：2021-12-07

申请号：US16609180

申请日：2018-10-18

Applicant: LG CHEM, LTD.

Inventor： Hansol Kim ,  Joong Jin Han ,  Eunju Park ,  Hyun Woog Ryu ,  Kwonsu Jung

IPC: C08G75/0259 ,  C08G75/0254 ,  C08G75/0281

Abstract: The present disclosure relates to a preparation method of a polyarylene sulfide, and this method may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method at a high yield by adding an acidic compound in addition to existing materials for dehydration.

公开(公告)号：US10899874B2

公开(公告)日：2021-01-26

申请号：US15753095

申请日：2016-09-22

Applicant: LG CHEM, LTD.

Inventor： Yong Jin Jang ,  Joong Jin Han ,  Esder Kang ,  Yunah Yu ,  Youngjea Kim

IPC: C08G61/12 ,  H01M8/1032 ,  H01M8/18 ,  B01D71/80 ,  H01M8/1039 ,  H01M8/1023 ,  B01D69/02 ,  H01M8/1067 ,  H01M8/103 ,  H01M8/1027 ,  H01M8/1034 ,  H01M8/1025 ,  C08J5/22 ,  H01M8/1004 ,  B01D71/62 ,  B01D71/68 ,  H01M8/1018 ,  B01D71/32

Abstract: The present specification relates to a block polymer and a polymer electrolyte membrane comprising the same, a membrane-electrode assembly comprising the polymer electrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polymer electrolyte membrane.

公开(公告)号：US10749210B2

公开(公告)日：2020-08-18

申请号：US16067964

申请日：2017-10-30

Applicant: LG Chem, Ltd.

Inventor： Sol Ji Park ,  Kyoung Ho Ahn ,  Young Jea Kim ,  Yong Jin Jang ,  Joong Jin Han ,  Chul Haeng Lee

IPC: H01M10/0565 ,  C08G81/00 ,  H01M10/0569

Abstract: The present invention provides a polymer electrolyte for a secondary battery having high ionic conductivity, and a lithium secondary battery including the same.

公开(公告)号：US10526282B2

公开(公告)日：2020-01-07

申请号：US15515007

申请日：2015-10-28

Applicant: LG CHEM, LTD.

Inventor： Hyun Woog Ryu ,  Sehee Jung ,  Joong Jin Han ,  Yong Jin Jang ,  Youngjea Kim ,  Esder Kang

IPC: C07C323/09 ,  C08L71/12 ,  C08G65/40 ,  C07C43/29 ,  C08G75/02 ,  C07C317/12 ,  H01M8/10 ,  C07C43/275 ,  H01M8/18 ,  B01J39/19 ,  C08G75/0245 ,  C08G75/12 ,  H01M8/1039 ,  H01M8/1018

Abstract: The present specification relates to a fluorine-based compound for a brancher, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell using the same, and a redox flow battery including the same.

公开(公告)号：US10407545B2

公开(公告)日：2019-09-10

申请号：US15516756

申请日：2015-10-28

Applicant: LG CHEM, LTD.

Inventor： Sehee Jung ,  Joong Jin Han ,  Hyun Woog Ryu ,  Yong Jin Jang ,  Youngjea Kim ,  Esder Kang

IPC: C08G65/40 ,  C08G73/06 ,  C08J5/22 ,  H01M8/18 ,  C08L71/12 ,  H01M8/103 ,  H01M8/1027 ,  H01M8/1032 ,  H01M8/1018

Abstract: The present specification relates to a polymerization composition, a polymer using the same, a polymer electrolyte membrane using the same, a fuel cell including the same, and a redox flow battery including the same.

公开(公告)号：US10361447B2

公开(公告)日：2019-07-23

申请号：US15531702

申请日：2015-12-04

Applicant: LG CHEM, LTD.

Inventor： Esder Kang ,  Joong Jin Han ,  Youngjea Kim ,  Sehee Jung ,  Hyun Woog Ryu ,  Yong Jin Jang ,  Soyoung Yu

IPC: H01M8/1032 ,  H01M8/1027 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1023 ,  H01M8/18 ,  H01M8/1025 ,  H01M8/1053 ,  C08G75/20 ,  C08G65/40 ,  C08G75/02 ,  C08G81/00 ,  C08G61/02 ,  C08G61/12 ,  C08J5/22 ,  C08L65/00 ,  B01J39/19 ,  B01J47/12 ,  H01M8/1018

Abstract: The present specification relates to a polymer with improved acid resistance, a polymer electrolyte membrane including the same, a membrane-electrode assembly including the polymer electrolyte membrane, a fuel cell including the membrane-electrode assembly, and a redox flow battery including the polymer electrolyte membrane.