公开(公告)号：US10093755B2

公开(公告)日：2018-10-09

申请号：US15323595

申请日：2015-07-24

Applicant: LG CHEM, LTD.

Inventor： A Rim Kim ,  Dong Eun Kim ,  Jin Sam Gong ,  Seung Hwan Jung ,  Hae Woong Park

IPC: C07F17/00 ,  C08F4/6592 ,  C08F4/76 ,  C07F7/10 ,  C08F210/16 ,  C07F7/08 ,  C07F7/28 ,  C08F4/659

Abstract: The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition including the transition metal compound. The novel ligand compound and the transition metal compound of the present invention may be usefully used as the catalyst of a polymerization reaction for preparing an olefin polymer having a low density relative to a CGC catalyst. In addition, a product having a low melt index (MI) and a high molecular weight may be manufactured using the olefin polymer polymerized using the catalyst composition including the transition metal compound.

公开(公告)号：US09605099B2

公开(公告)日：2017-03-28

申请号：US15033233

申请日：2014-10-30

Applicant: LG CHEM, LTD.

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

IPC: C08F210/16 ,  C08L23/00 ,  C08F10/00 ,  C08J5/18 ,  H01L31/0203 ,  H01L33/56 ,  H01L51/52

CPC classification number: C08F210/16 ,  C08F10/00 ,  C08J5/18 ,  C08J2323/20 ,  C08L23/00 ,  C08L23/0815 ,  C08L51/06 ,  C09J123/08 ,  C09J123/0815 ,  H01L31/0203 ,  H01L33/56 ,  H01L51/5237

Abstract: Provided are a polyolefin resin having two crystallization temperatures, a resin composition including the polyolefin resin, an encapsulant film, a method for manufacturing the encapsulant for an optoelectronic device, and an optoelectronic device, in which the encapsulant having high light transmittance and low haze value can be provided even under the condition of low lamination, and the resin composition including the polyolefin resin can be used for manufacturing various encapsulants for an optoelectronic device, thereby providing excellent adhesive strength with the front substrate and back sheet included in the device, especially, a long-term adhesion property and improved heat resistance.

公开(公告)号：US12234307B2

公开(公告)日：2025-02-25

申请号：US17430909

申请日：2020-09-25

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：US12134668B2

公开(公告)日：2024-11-05

申请号：US17608564

申请日：2020-09-28

Applicant: LG Chem, Ltd.

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

IPC: C08F210/08 ,  C08F2/04 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/16 ,  C08L23/14

Abstract: The present invention relates to an olefin-based polymer satisfying conditions as follow: (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 density (d) is from 0.860 g/cc to 0.880 g/cc, and (3) T(90)−T(50)≤50 and T(95)−T(90)≥10 are satisfied when measured by a differential scanning calorimetry precise measurement method (SSA). The olefin-based polymer according to the present invention is a low-density olefin-based polymer introducing a highly crystalline region and showing high mechanical rigidity.

公开(公告)号：US12065515B2

公开(公告)日：2024-08-20

申请号：US17603210

申请日：2020-08-27

Applicant: LG Chem, Ltd.

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

IPC: C08F110/06 ,  C08F4/6592 ,  C08L23/08

CPC classification number: C08F110/06 ,  C08F4/6592 ,  C08L23/0815 ,  C08L2203/30 ,  C08L2205/02 ,  C08F210/16 ,  C08F210/08 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/34 ,  C08F2500/35 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/34 ,  C08F2500/35 ,  C08F210/16 ,  C08F4/6592 ,  C08F210/16 ,  C08F2/06 ,  C08L23/142 ,  C08L23/0815

Abstract: The present invention relates to a polypropylene-based composite material having improved physical properties including impact strength at low temperature and at room temperature, flexural strength, flexural modulus, etc., and a method for preparing the same.

公开(公告)号：US11732071B2

公开(公告)日：2023-08-22

申请号：US17050089

申请日：2019-05-03

Applicant: LG Chem, Ltd.

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

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F2420/02 ,  C08F2420/06 ,  C08F2500/12 ,  C08F2500/18

Abstract: An olefin-based copolymer and method of making the same are disclosed herein. In some embodiments, the olefin-based copolymer includes a repeating unit derived from an alpha-olefin, wherein the alphas-olefin is present in the copolymer at 15 wt % to 45 wt %, wherein the 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, and a hardness defined by Equation 1. The olefin-based copolymer has improved hardness and is highly flowable, and may show improved physical properties of tensile strength, elongation rate and flexural modulus.

公开(公告)号：US20230089406A1

公开(公告)日：2023-03-23

申请号：US17792034

申请日：2021-04-16

Applicant: LG Chem, Ltd.

Inventor： Jin Sam Gong ,  Eun Jung Lee ,  Young Woo Lee ,  Jung Ho Jun ,  Jin Kuk Lee ,  Sang Hyun Hong ,  Jong Gil Kim ,  Hye Ji Lee ,  Sang Wook Han

IPC: C08F210/16

Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent volume resistance and light transmittance, and a method for preparing the same.

公开(公告)号：US20230002526A1

公开(公告)日：2023-01-05

申请号：US17778898

申请日：2020-12-08

Applicant: LG Chem, Ltd.

Inventor： Jung Ho Jun ,  Eun Jung Lee ,  Jin Sam Gong ,  Young Woo Lee ,  Jin Kuk Lee

IPC: C08F210/16

Abstract: An ethylene/alpha-olefin copolymer and method for preparing the same is disclosed herein. In some embodiments, an ethylene/alpha-olefin copolymer satisfying the following conditions, (a) a density of 0.85 to 0.89 g/cc, (b) a molecular weight distribution of 1.8 to 2.3, (c) a melt index (MI2.16) of 1 to 100 dg/min, and (d) a full width at half maximum (FWHM) of a crystallization peak of 15 or more. The ethylene/alpha-olefin copolymer has high volume resistance and light transmittance.

公开(公告)号：US11505725B2

公开(公告)日：2022-11-22

申请号：US16956875

申请日：2019-05-03

Applicant: LG Chem, Ltd.

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

IPC: C08F210/16 ,  C09J123/16 ,  C08F4/64 ,  C09J123/08 ,  C08F2/34 ,  C08F4/6592 ,  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, uniform crystallinity, thereby showing excellent physical properties.

公开(公告)号：US20220251355A1

公开(公告)日：2022-08-11

申请号：US17628941

申请日：2020-12-17

Applicant: LG Chem, Ltd.

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

IPC: C08L23/08 ,  C08F4/6592

Abstract: An ethylene/alpha-olefin copolymer and method for preparing the same is disclosed herein. In some embodiments, an ethylene/alpha-olefin copolymer satisfying the following conditions, (a) a density of 0.85 to 0.89 g/cc, (b) a molecular weight distribution of 1.5 to 2.3, (c) a melting temperature of 85° C. or less, and (d) a free volume proportional constant (C2) of 600 or less. The ethylene/alpha-olefin copolymer has high volume resistance and light transmittance.