公开(公告)号：US20250154303A1

公开(公告)日：2025-05-15

申请号：US19022464

申请日：2025-01-15

Applicant: LG Chem, Ltd.

Inventor： Young Woo Lee ,  Seul Ki Kim ,  Dae Woong Lee ,  Jin Kuk Lee ,  Eun Jung Lee ,  Jin Sam Gong ,  Jung Ho Jun ,  Jun Hyuk Lee

IPC: C08F210/16 ,  C08J5/18 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0807

Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having a high weight average molecular weight and narrow molecular weight distribution, and at the same time, a reduced characteristic relaxation time, thereby showing excellent physical properties, and a method for preparing the same. A resin composition having improved volume resistance and excellent light transmittance may be prepared by using such ethylene/alpha-olefin copolymer. Accordingly, the ethylene/alpha-olefin copolymer may be utilized in various uses in electrical and electronic industrial fields.

公开(公告)号：US12162967B2

公开(公告)日：2024-12-10

申请号：US17418360

申请日：2020-02-20

Applicant: LG Chem, Ltd.

Inventor： Sang Eun Park ,  Eun Jung Lee ,  Hyun Jin Ju ,  In Sung Park ,  Jin Sam Gong ,  Jung Ho Jun ,  Rae Keun Gwak ,  Choong Hoon Lee ,  Tae Su Kim

IPC: C08F210/16 ,  C08F2/01 ,  C08F4/6592 ,  C08F210/06 ,  C08F210/14

Abstract: An olefin-based polymer and method of making the same is disclosed herein. In some embodiments, the olefin-based polymer has multiple crystallinity and satisfies the following: (1) two or more peaks in a temperature range of −20° C. to 120° C. when measured by cross-fractionation chromatography (CFC), and T(90)−T(50)

公开(公告)号：US11718738B2

公开(公告)日：2023-08-08

申请号：US17050171

申请日：2019-05-03

Applicant: LG Chem, Ltd.

Inventor： Jung Ho Jun ,  Eun Jung Lee ,  Jin Sam Gong ,  Rae Keun Gwak ,  Tae Su Kim

IPC: C08F210/16 ,  C08L23/08 ,  C09J123/08 ,  C08F2/38 ,  C08F4/649 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/08 ,  C09J11/08

CPC classification number: C08L23/0815 ,  C08F2/38 ,  C08F4/6493 ,  C08F4/6495 ,  C08F4/6496 ,  C08F4/6498 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/08 ,  C08F210/16 ,  C09J11/08 ,  C09J123/0815 ,  C08L2314/06

Abstract: The present invention provides an adhesive composition including an ethylene/alpha-olefin copolymer; and a tackifier, wherein the ethylene/alpha-olefin copolymer has narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups, thereby showing excellent physical properties.

公开(公告)号：US11629208B2

公开(公告)日：2023-04-18

申请号：US17050198

申请日：2019-05-03

Applicant: LG Chem, Ltd.

Inventor： In Sung Park ,  Eun Jung Lee ,  Hyun Jin Ju ,  Sang Eun Park ,  Choong Hoon Lee ,  Jin Sam Gong ,  Jung Ho Jun ,  Rae Keun Gwak

IPC: C08F4/6592 ,  C08F210/14 ,  C08F210/16 ,  C08F210/02 ,  C08F4/646 ,  C08F4/649 ,  C08F210/04 ,  C08F210/18

Abstract: An olefin-based copolymer and a method of making the same are disclosed herein. In some embodiments, an olefin-based copolymer has a density (d) of 0.85 to 0.89 g/cc, a melt index (MI), measured at 190° C. and 2.16 kg load, of 15 g/10 min to 100 g/10 min, a number of unsaturated functional groups (total V) per 1,000 carbon atoms of 0.8 or less, a vinylene content, and a vinyl content, wherein the vinylene content, the vinyl content and the total V satisfy (a) vinylene content/total V=0.1 to 0.7 and (b) vinylene content/vinyl content=0.8 to 1.6. The olefin-based copolymer has controlled content and kind of an unsaturated functional group in the olefin-based copolymer and thus, has high flowability, and may show improved physical properties of hardness, flexural strength and tensile strength.

公开(公告)号：US20220315747A1

公开(公告)日：2022-10-06

申请号：US17608874

申请日：2020-09-28

Applicant: LG Chem, Ltd.

Inventor： In Sung Park ,  Eun Jung Lee ,  Sang Eun Park ,  Tae Su Kim ,  Choong Hoon Lee ,  Jin Sam Gong ,  Jung Ho Jun ,  Rae Keun Gwak

IPC: C08L23/12

Abstract: The present invention relates to a polypropylene-based composite, including (A) polypropylene, and (B) an olefin-based polymer satisfying the following conditions: (1) a melt index (MI, 190° C., 2.16 kg load conditions) is from 0.1 g/10 min to 10.0 g/10 min, (2) a melting temperature when measured by differential scanning calorimetry (DSC) is from 20° C. to 70° C., and (3) a high temperature melting peak is confirmed at 75° C. to 150° C. when measured by a differential scanning calorimetry precise measurement method (SSA), and a total enthalpy of fusion ΔH(75) of a corresponding region is 1.0 J/g or more. The polypropylene-based composite of the present invention may show excellent impact strength.

公开(公告)号：US11225495B2

公开(公告)日：2022-01-18

申请号：US16614217

申请日：2018-07-27

Applicant: LG Chem, Ltd.

Inventor： Young Shil Do ,  Jin Sam Gong ,  Eun Jung Lee ,  Choong Hoon Lee ,  Seung Hwan Jung ,  Yoon Hee Cho ,  Hyo Jung Han

IPC: C07F7/00 ,  C08F4/64 ,  C08F4/76 ,  C07F7/28 ,  C08F10/02

Abstract: A transition metal compound represented by Chemical Formula 1 and a method for preparing the same, catalyst compositions including the same, and olefin-based polymers prepared from the same are disclosed herein. The transition metal catalyst has excellent structural stability together with excellent catalytic activity and can exhibit excellent copolymerizability even at a high temperature. In an embodiment, an olefin-based polymer prepared using a catalyst composition including the transition metal compound has a density of 0.91 g/cc or less.

公开(公告)号：US20210230460A1

公开(公告)日：2021-07-29

申请号：US17050171

申请日：2019-05-03

Applicant: LG Chem, Ltd.

Inventor： Jung Ho Jun ,  Eun Jung Lee ,  Jin Sam Gong ,  Rae Keun Gwak ,  Tae Su Kim

IPC: C09J123/08 ,  C08F4/6592 ,  C08F210/16 ,  C09J11/08

Abstract: The present invention provides an adhesive composition including an ethylene/alpha-olefin copolymer; and a tackifier, wherein the ethylene/alpha-olefin copolymer has narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups, thereby showing excellent physical properties.

公开(公告)号：US10011624B2

公开(公告)日：2018-07-03

申请号：US15327572

申请日：2015-12-24

Applicant: LG CHEM, LTD.

Inventor： Young Shil Do ,  Jin Sam Gong ,  Yun Jin Lee ,  Choong Hoon Lee ,  Seung Hwan Jung

IPC: C07F17/00 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/16 ,  B01J31/38 ,  C07F7/28 ,  C08F4/659

CPC classification number: C07F17/00 ,  B01J31/38 ,  C07F7/28 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F210/16 ,  C08F2420/02 ,  C08F2420/06 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/12

Abstract: The present invention discloses a transition metal compound including a heteroatom and having a novel structure, a catalyst composition including the same, and a preparation method of a polymer using the catalyst composition. The transition metal compound according to an embodiment of the present invention may be used as a catalyst having good copolymerization properties, and a polymer having a high molecular weight at a low density region may be prepared.

公开(公告)号：US09732170B2

公开(公告)日：2017-08-15

申请号：US14655015

申请日：2013-12-24

Applicant: LG CHEM, LTD.

Inventor： Hyo Ju Kim ,  Choong Hoon Lee ,  Sung Ho Choi ,  Ji Yoon Woo ,  Jin Sam Gong

IPC: C09J151/06 ,  C08F210/16 ,  C08L51/00 ,  C08K5/132 ,  C08K5/134 ,  C08K5/52 ,  H01L31/048 ,  C08J5/18 ,  H01L31/18 ,  H01L31/049 ,  C08L23/08 ,  C08K5/544 ,  C08L23/00 ,  C08F255/02 ,  C08F8/42 ,  C08L51/06 ,  H01L23/29 ,  C08K5/14 ,  C08K5/5425 ,  C09D143/04 ,  C09D151/06

CPC classification number: C08F210/16 ,  C08F8/42 ,  C08F255/02 ,  C08J5/18 ,  C08J2323/08 ,  C08J2451/06 ,  C08J2451/08 ,  C08K5/132 ,  C08K5/1345 ,  C08K5/14 ,  C08K5/52 ,  C08K5/5425 ,  C08K5/544 ,  C08L23/00 ,  C08L23/08 ,  C08L23/0815 ,  C08L51/003 ,  C08L51/06 ,  C08L2203/204 ,  C08L2203/206 ,  C08L2205/025 ,  C09D143/04 ,  C09D151/06 ,  C09J151/06 ,  H01L23/29 ,  H01L23/296 ,  H01L31/048 ,  H01L31/0481 ,  H01L31/049 ,  H01L31/18 ,  H01L2924/0002 ,  Y02E10/20 ,  Y02E10/50 ,  C08F230/08 ,  H01L2924/00

Abstract: An encapsulant film and an optoelectronic device are provided. The encapsulant film having improved thermal resistance, and excellent adhesion, especially, long-term adhesive properties, to a front substrate and a back sheet can be provided. Also, the optoelectronic device capable of maintaining excellent workability and economic feasibility upon manufacture of the device without causing a negative influence on working environments and parts such as optoelectronic elements or wiring electrodes encapsulated by the encapsulant film can be provided.

公开(公告)号：US20250101203A1

公开(公告)日：2025-03-27

申请号：US18730024

申请日：2023-06-07

Applicant: LG Chem, Ltd.

Inventor： Young Woo Lee ,  Jin Sam Gong ,  Sang Eun Park ,  Si Jung Lee ,  Jong Gil Kim ,  Eun Jung Lee

IPC: C08K5/5425 ,  C08J5/18 ,  C08K5/3492 ,  H10F19/80

Abstract: Provided is an encapsulant film composition; including an ethylene/alpha-olefin copolymer and a crosslinking aid comprises a compound represented by Formula 1 below, an encapsulant film, and a solar cell module thereof. When an encapsulant film is produced using the encapsulant film composition, the immersing time of an ethylene/alpha-olefin copolymer is reduced so that the economic viability of a process of producing an encapsulant film can be improved. In addition, the encapsulant film composition produced exhibits excellent crosslinking degree. wherein R1 to R6 are described herein.