公开(公告)号：US10647894B2

公开(公告)日：2020-05-12

申请号：US16094663

申请日：2017-04-04

Applicant: LG Chem, Ltd.

Inventor： Kwang Su Seo ,  Eun Kyung Park ,  Seung Won Lee ,  Jang Soon Kim ,  Tae Yi Choi

IPC: C09J115/00 ,  C09J123/22 ,  G06F3/041

Abstract: Provided is an adhesive composition for an optical use, including: a first isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 100,000 g/mol to 1,000,000 g/mol; and a second isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 5,000 g/mol to 100,000 g/mol, in which the first isobutylene-isoprene-based rubber and the second isobutylene-isoprene-based rubber each include a hydroxy group. Further, provided is an adhesive layer including a thermally cured product of the adhesive composition for optical use.

公开(公告)号：US10522872B2

公开(公告)日：2019-12-31

申请号：US15572851

申请日：2016-10-28

Applicant: LG CHEM, LTD.

Inventor： Dong Wook Ko ,  Doo Kyung Yang ,  Eun Kyung Park ,  Jong Hyun Chae

IPC: H01M6/18 ,  H01M10/056 ,  H01M10/052

Abstract: A polymer electrolyte for an all-solid battery, having a multi-layer structure is provided. An embodiment of the polymer electrolyte is a polymer electrolyte having a multi-layer structure, which includes a first polymer electrolyte layer and a second polymer electrolyte layer, where the EO:Li molar ratio of a poly(ethylene oxide)(PEO)-based polymer and a lithium salt is different between the first and second polymer electrolyte layers is provided. A solid polymer electrolyte of the present invention in the all-solid battery substantially reduces the interfacial resistance with lithium and the discharge overvoltage, resulting in a sufficient discharge capacity, which improves output characteristics and energy density.

公开(公告)号：US10174224B2

公开(公告)日：2019-01-08

申请号：US14421023

申请日：2013-08-07

Applicant: LG Chem, Ltd.

Inventor： Chan Oh Yoon ,  Eun Kyung Park ,  Jaegwan Lee ,  Jang Soon Kim ,  Bu Gi Jung ,  Sung Chan Park ,  Won Ho Kim

IPC: C09J133/14 ,  C09J175/08 ,  G06F1/16 ,  C09J7/02

Abstract: Provided is a urethane adhesive composition for a touch panel having a glass transition temperature between −20° C. to −50° C., and which, as a cured composition, has an elasticity of 50,000 Pa to 70,000 Pa at 60° C. to 80° C.

公开(公告)号：US20170327714A1

公开(公告)日：2017-11-16

申请号：US15528929

申请日：2016-11-04

Applicant: LG Chem, Ltd.

Inventor： Kwang Su Seo ,  Eun Kyung Park ,  Seung Won Lee ,  Jang Soon Kim ,  Won Gu Choi ,  Tae Yi Choi

IPC: C09J7/02 ,  C09J123/22 ,  C09J201/08 ,  B32B27/30 ,  C09J133/06 ,  C09J11/06

CPC classification number: C09J7/20 ,  B32B27/308 ,  C08L23/30 ,  C08L2312/00 ,  C09J4/00 ,  C09J7/35 ,  C09J11/06 ,  C09J123/22 ,  C09J123/30 ,  C09J133/066 ,  C09J201/08 ,  C09J2201/36 ,  C09J2203/318 ,  C09J2409/00 ,  Y10T428/2852 ,  C08F220/18

Abstract: The present invention relates to an adhesive composition for optical use, which is applied to optical devices or display devices and thus may exhibit excellent adhesion performance while exhibiting a high barrier performance based on a low water vapor transmission rate, and may implement both excellent optical characteristics and durability, and specifically, provides an adhesive composition for optical use, the adhesive composition including: a thermally curable rubber including an isobutylene-isoprene rubber having a carboxyl group and an isobutylene-isoprene rubber having a hydroxy group; and a thermal crosslinking agent. Further, the present invention provides an adhesive film for optical use, including an adhesive layer including photocured products of the adhesive composition for optical use.

公开(公告)号：US11380891B2

公开(公告)日：2022-07-05

申请号：US16339638

申请日：2017-09-29

Applicant: LG CHEM, LTD.

Inventor： Eun Kyung Park ,  Min Chul Jang ,  Chan Yeup Chung ,  Da Young Sung ,  Chang Hun Park

IPC: H01M4/40 ,  H01M4/04 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/02

Abstract: A film-shaped coating layer including at least one lithium ion conductive compound having a band gap of 5.5 eV to 10 eV formed on the surface of a core including a lithium composite metal oxide to a thickness at which dielectric breakdown does not occur according to types of the lithium ion conductive compound and the lithium composite metal oxide under charge and discharge conditions. Thereby, an oxidation/reduction reaction is suppressed by blocking the movement of electrons at an interface between an active material and an electrolyte solution by the coating layer which surrounds the surface of particles and has lithium ion conductivity, and, as a result, a positive electrode active material for a secondary battery, which may improve energy density of an electrode and life characteristics of a battery, and a secondary battery including the same are provided.

公开(公告)号：US20190112510A1

公开(公告)日：2019-04-18

申请号：US16094663

申请日：2017-04-04

Applicant: LG Chem, Ltd.

Inventor： Kwang Su Seo ,  Eun Kyung Park ,  Seung Won Lee ,  Jang Soon Kim ,  Tae Yi Choi

IPC: C09J115/00

Abstract: Provided is an adhesive composition for an optical use, including: a first isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 100,000 g/mol to 1,000,000 g/mol; and a second isobutylene-isoprene-based rubber having a weight average molecular weight (Mw) of 5,000 g/mol to 100,000 g/mol, in which the first isobutylene-isoprene-based rubber and the second isobutylene-isoprene-based rubber each include a hydroxy group. Further, provided is an adhesive layer including a thermally cured product of the adhesive composition for optical use.

公开(公告)号：US09850408B2

公开(公告)日：2017-12-26

申请号：US14406314

申请日：2013-01-08

Applicant: LG Chem, Ltd.

Inventor： Chan Oh Yoon ,  Jang Soon Kim ,  Min Seok Song ,  Eun Kyung Park ,  Bu Gi Jung

IPC: B32B7/12 ,  C09J133/08 ,  C09J133/04 ,  C09J7/00 ,  C09J7/02 ,  G02B27/00

CPC classification number: C09J133/08 ,  C08L33/04 ,  C08L33/08 ,  C08L2312/00 ,  C09J7/00 ,  C09J7/10 ,  C09J133/04 ,  C09J2201/134 ,  C09J2201/36 ,  C09J2201/622 ,  C09J2203/318 ,  C09J2433/00 ,  G02B27/0018 ,  Y10T428/24942

Abstract: The present invention relates to an optical adhesive film which has excellent adhesive strength at room temperature and has improved efficiency in a rework process since peel strength is low at high temperatures. When attaching a touchscreen panel and an LCD by using the adhesive film of the present invention and separating the touchscreen panel and the LCD at high temperatures, the touchscreen panel and the LCD can be separated from each other without causing damage thereto. Additionally, the optical film of the present invention comprises two adhesive layers, wherein peeling occurs at the first adhesive layer having an adhesive composition such that a peeling surface can be controlled according to the convenience of a user.

公开(公告)号：US10364380B2

公开(公告)日：2019-07-30

申请号：US15528914

申请日：2016-11-04

Applicant: LG Chem, Ltd.

Inventor： Kwang Su Seo ,  Eun Kyung Park ,  Seung Won Lee ,  Jang Soon Kim ,  Won Gu Choi ,  Tae Yi Choi

IPC: C09J11/06 ,  C09J151/06 ,  C09J123/22

Abstract: The present invention provides an adhesive composition for optical use, which includes rubber and may be chemically cross-linked through an appropriate curing process, and as a result, may secure excellent long-term durability, water vapor transmission resistance, and chemical resistance, and includes an isobutylene-isoprene rubber having an acrylic acid ester-based functional group in a main chain thereof, a photoinitiator, and a tackifier in order to provide optical characteristics sufficient to be used for optical use. The present invention provides a method for preparing the adhesive composition for optical use, and it is possible to obtain the adhesive composition for optical use, which includes a chemically cross-linkable rubber by the method. Further, the present invention provides an adhesive film for optical use, and excellent long-term durability and optical characteristics may be implemented by applying the adhesive film for optical use to a wide range of electronic devices.

公开(公告)号：US10446874B2

公开(公告)日：2019-10-15

申请号：US15522915

申请日：2015-10-30

Applicant: LG CHEM, LTD.

Inventor： Dong Wook Koh ,  Eun Kyung Park ,  Jong Hyun Chae ,  Doo Kyung Yang ,  Ki Young Kwon

IPC: H01M10/0525 ,  H01M4/134 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M4/66 ,  H01M4/136 ,  H01M4/38 ,  H01M10/0565 ,  H01M10/052 ,  H01M10/058 ,  H01M4/04 ,  H01M4/1397

Abstract: The present disclosure relates to a lithium sulfur battery comprising a negative electrode and a positive electrode disposed opposite to each other, a separator positioned between the negative electrode and the positive electrode, and a gel polymer electrolyte positioned between the separator and the positive electrode, wherein the gel polymer electrolyte comprises LiNO3.The present disclosure relates to a lithium sulfur battery preventing degeneration caused by a shuttle effect, and the lithium sulfur battery comprises a gel polymer electrolyte configured to inhibit a transfer of a polysulfide-based material to a negative electrode so as to prevent a loss of the polysulfide formed on a positive electrode surface during charge and discharge reactions, whereby, lifespan characteristics of the lithium sulfur battery are capable of being enhanced.

公开(公告)号：US10227510B2

公开(公告)日：2019-03-12

申请号：US14899122

申请日：2014-06-27

Applicant: LG Chem, Ltd.

Inventor： Chan Oh Yoon ,  Sung Chan Park ,  Jang Soon Kim ,  Eun Kyung Park ,  Bu Gi Jung ,  Won Ho Kim

IPC: C09J133/08 ,  C09J11/04 ,  C09J133/14 ,  G06F3/041 ,  C09J7/10 ,  C08F220/18 ,  C09J133/06 ,  C08K3/34 ,  C08K7/10 ,  C08K5/5415

Abstract: The present invention relates to an optical adhesive film including plate-type inorganic nanoparticles and a curable resin. The optical adhesive film has improved barrier characteristics to moisture and gas, improved light-transmittance, and excellent durability and peel characteristics.