公开(公告)号：US20220177614A1

公开(公告)日：2022-06-09

申请号：US17599263

申请日：2020-10-07

Applicant: LG Chem, Ltd.

Inventor： Eun Kyoung Song ,  Sun Mi Kim ,  Si Jung Lee ,  Bog Ki Hong ,  Cheolhwan Jeong ,  Daesik Hong

IPC: C08F8/20 ,  C08F4/6592 ,  C08F4/659 ,  C08F110/02 ,  C08L23/28 ,  C08L27/06

Abstract: The present disclosure relates to a polyethylene, which is reacted with chlorine to prepare a chlorinated polyethylene having excellent chlorination productivity and thermal stability by enabling an increase in chlorination temperature, and facilitating deoxidation, dehydration and drying processes during chlorination processing, by implementing an enlarged area of the middle and high molecular weight regions in the molecular structure of the polyethylene.

公开(公告)号：US20220144983A1

公开(公告)日：2022-05-12

申请号：US17438174

申请日：2020-06-11

Applicant: LG Chem, Ltd.

Inventor： Sangeun An ,  Insun Lee ,  Seok Hwan Kim ,  Byung Seok Kim ,  Daesik Hong ,  Sanghoon Lee

IPC: C08F110/06 ,  C07F17/00

Abstract: Provided are a hybrid supported metallocene catalyst comprising one or more first metallocene compounds selected from compounds represented by the following Chemical Formula 1; one or more second metallocene compounds selected from compounds represented by the following Chemical Formula 2, and showing high activity in propylene polymerization and being usefully applied to the preparation of a polypropylene having high melt strength by introducing long chain branches into the polypropylene molecule, and a method of preparing a polypropylene using the same wherein all the variables are described herein.

公开(公告)号：US20220017657A1

公开(公告)日：2022-01-20

申请号：US17294743

申请日：2020-09-25

Applicant: LG Chem, Ltd.

Inventor： Sun Mi Kim ,  Ue Ryung Seo ,  Bog Ki Hong ,  Eun Kyoung Song ,  Daesik Hong ,  Si Jung Lee ,  Cheolhwan Jeong ,  Kiju Um

IPC: C08F4/6592 ,  C08F4/02 ,  C08F110/02

Abstract: Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having the following Chemical Formulas 1 and 2, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same: wherein all the variables are described herein.

公开(公告)号：US11225568B2

公开(公告)日：2022-01-18

申请号：US16635239

申请日：2018-12-06

Applicant: LG Chem, Ltd.

Inventor： Jongsang Park ,  Ki Soo Lee ,  Eun Kyoung Song ,  Daesik Hong ,  Ye Jin Lee ,  Joongsoo Kim ,  Eunyoung Shin ,  Youngsuk You ,  Jinyoung Kwak

IPC: C08F210/16 ,  C08F110/02 ,  C08F4/76 ,  C08F4/64 ,  C08L23/08 ,  C08F4/649 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/04 ,  C08F210/14

Abstract: The present invention relates to a polyethylene copolymer which has excellent processability and long-term durability, and thus is useful for hollow molding of a pipe or the like.

公开(公告)号：US20210371558A1

公开(公告)日：2021-12-02

申请号：US17278005

申请日：2019-12-20

Applicant: LG Chem, Ltd.

Inventor： Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Chang Hwan Jang ,  Daesik Hong ,  Jisoo Song

IPC: C08F210/16

Abstract: The present invention relates to polyolefin. More specifically, the present invention relate s to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency and satisfying one of the following 1)˜4): 1) when density is 0.9165 g/cm3 or more and less than 0.9175 g/cm3, the content of SCB (Short Chain Branch) is 9.5 to 10.5 wt %, 2) when density is 0.9175 g/cm3 or more and less than 0.9185 g/cm3, the content of SCB (Short Chain Branch) is 9.0 to 10.0 wt %, 3) when density is 0.9185 g/cm3 or more and less than 0.9195 g/cm3, the content of SCB (Short Chain Branch) is 8.5 to 9.5 wt %, 4) when density is 0.9195 g/cm3 or more and less than 0.9205 g/cm3, the content of SCB (Short Chain Branch) is 7.5 to 8.5 wt %, wherein the density is measured according to ASTM D1505.

公开(公告)号：US20210031180A1

公开(公告)日：2021-02-04

申请号：US16957270

申请日：2018-12-14

Applicant: LG Chem, Ltd.

Inventor： Byung Seok Kim ,  Insun Lee ,  Seok Hwan Kim ,  Hye Kyung Lee ,  Heekwang Park ,  Daesik Hong ,  Sangjin Jeon

IPC: B01J37/04 ,  C08F10/06 ,  C08F4/6592

Abstract: Provided are a method of preparing a supported metallocene catalyst, and a method of preparing polypropylene using the catalyst prepared thereby. According to the present invention, provided is a supported metallocene catalyst capable of preparing an isotactic polypropylene polymer having a low xylene soluble content while having excellent catalytic activity.

公开(公告)号：US12221498B2

公开(公告)日：2025-02-11

申请号：US17282524

申请日：2019-12-20

Applicant: LG Chem, Ltd.

Inventor： Jinyoung Lee ,  Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Seok Hwan Kim ,  Daesik Hong

IPC: C08F210/16 ,  C08F210/18

Abstract: The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and has an ethylene sequence inhomogeneity (I) calculated by the following Equation 1 of 1.25 to 1.40, when analyzed by SSA (Successive Self-nucleation and Annealing): Inhomogeneity (I)=Lw/Ln  [Equation 1] in the Equation 1, Lw is weighted average (unit: nm) of ESL (Ethylene sequence length), and Ln is arithmetic mean (unit: nm) of ESL (Ethylene sequence length).

公开(公告)号：US11993665B2

公开(公告)日：2024-05-28

申请号：US17294743

申请日：2020-09-25

Applicant: LG Chem, Ltd.

Inventor： Sun Mi Kim ,  Ue Ryung Seo ,  Bog Ki Hong ,  Eun Kyoung Song ,  Daesik Hong ,  Si Jung Lee ,  Cheolhwan Jeong ,  Kiju Um

IPC: C08F110/02 ,  C08F4/02 ,  C08F4/6592 ,  C08F8/20

CPC classification number: C08F110/02 ,  C08F4/02 ,  C08F4/65922 ,  C08F8/20 ,  C08F2420/00

Abstract: Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having the following Chemical Formulas 1 and 2, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same:






wherein all the variables are described herein.

公开(公告)号：US11987655B2

公开(公告)日：2024-05-21

申请号：US17278005

申请日：2019-12-20

Applicant: LG Chem, Ltd.

Inventor： Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Chang Hwan Jang ,  Daesik Hong ,  Jisoo Song

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F2500/10

Abstract: The present invention relates to polyolefin. More specifically, the present invention relate s to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency and satisfying one of the following 1)˜4):



1) when density is 0.9165 g/cm3 or more and less than 0.9175 g/cm3, the content of SCB (Short Chain Branch) is 9.5 to 10.5 wt %,
2) when density is 0.9175 g/cm3 or more and less than 0.9185 g/cm3, the content of SCB (Short Chain Branch) is 9.0 to 10.0 wt %,
3) when density is 0.9185 g/cm3 or more and less than 0.9195 g/cm3, the content of SCB (Short Chain Branch) is 8.5 to 9.5 wt %,
4) when density is 0.9195 g/cm3 or more and less than 0.9205 g/cm3, the content of SCB (Short Chain Branch) is 7.5 to 8.5 wt %,
wherein the density is measured according to ASTM D1505.

公开(公告)号：US20230023983A1

公开(公告)日：2023-01-26

申请号：US17942559

申请日：2022-09-12

Applicant: LG Chem, Ltd.

Inventor： Byung Seok Kim ,  Insun Lee ,  Seok Hwan Kim ,  Hye Kyung Lee ,  Heekwang Park ,  Daesik Hong ,  Sangjin Jeon

IPC: B01J37/04 ,  C08F4/6592 ,  C08F10/06

Abstract: Provided are a method of preparing a supported metallocene catalyst, and a method of preparing polypropylene using the catalyst prepared thereby. According to the present invention, provided is a supported metallocene catalyst capable of preparing an isotactic polypropylene polymer having a low xylene soluble content while having excellent catalytic activity.