公开(公告)号：US11759977B2

公开(公告)日：2023-09-19

申请号：US16963695

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Heekwang Park ,  Hye Kyung Lee ,  Ha Na Park ,  Kyung Seop Noh ,  Hyunsup Lee ,  Seong Min Chae ,  Heon Yong Kwon ,  Sangjin Jeon ,  Seok Hwan Kim

IPC: C08F110/06 ,  C08F4/6592 ,  B29B9/12 ,  B29K23/00 ,  C08K5/098 ,  C08K5/12

CPC classification number: B29B9/12 ,  C08F4/6592 ,  C08F110/06 ,  B29K2023/12 ,  C08F4/65927 ,  C08K5/098 ,  C08K5/12

Abstract: The present invention provides a polypropylene resin pellet that is environment friendly, has excellent workability, and enables preparation of fine denier fiber, and a method for preparing the same.

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.

公开(公告)号：US11504706B2

公开(公告)日：2022-11-22

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 ,  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.

公开(公告)号：US20210078205A1

公开(公告)日：2021-03-18

申请号：US16963695

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Heekwang Park ,  Hye Kyung Lee ,  Ha Na Park ,  Kyung Seop Noh ,  Hyunsup Lee ,  Seong Min Chae ,  Heon Yong Kwon ,  Sangjin Jeon ,  Seok Hwan Kim

IPC: B29B9/12 ,  C08F4/6592 ,  C08F110/06

Abstract: The present invention provides a polypropylene resin pellet that is environment friendly, has excellent workability, and enables preparation of fine denier fiber, and a method for preparing the same.

公开(公告)号：US12134674B2

公开(公告)日：2024-11-05

申请号：US17432205

申请日：2020-03-04

Applicant: LG Chem, Ltd.

Inventor： Byung Seok Kim ,  Insun Lee ,  Seok Hwan Kim ,  Jung Won Lee ,  Donghyeon Gwon ,  Sangjin Jeon ,  Seyoung Kim ,  Heekwang Park

IPC: C07F17/00 ,  C08F2/38 ,  C08F4/659 ,  C08F4/6592 ,  C08F110/06

Abstract: The present disclosure relates to a novel transition metal compound represented by the following Chemical Formula 1, which exhibits excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a high melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same, wherein M, X1, X2, and R1 to R8 are described herein.

公开(公告)号：US11913923B2

公开(公告)日：2024-02-27

申请号：US18127457

申请日：2023-03-28

Applicant: LG Chem, Ltd.

Inventor： Hyunsup Lee ,  Seok Hwan Kim ,  Heekwang Park ,  Ki Soo Lee ,  Sangjin Jeon ,  Myunghan Lee

IPC: G01N30/88 ,  G01N33/44 ,  G01N30/02

CPC classification number: G01N30/88 ,  G01N33/442 ,  G01N2030/027

Abstract: A method for evaluating physical properties of a melt-blown plastic resin, and, more specifically, to a novel method for evaluating physical properties are provided. When a particular plastic resin is processed by a melt-blown process, a stretching diameter value after the process of the plastic resin can be accurately derived from a physical property value measured using a specimen of the resin.

公开(公告)号：US11358979B2

公开(公告)日：2022-06-14

申请号：US16957962

申请日：2018-12-21

Applicant: LG Chem, Ltd.

Inventor： Jae Youp Cheong ,  Heon Yong Kwon ,  Daesik Hong ,  Sangjin Jeon

IPC: C07F17/00 ,  C08F4/6592 ,  C08F110/06 ,  C08F10/06 ,  C08F4/659

Abstract: The present invention relates to a supported catalyst comprising a novel metallocene compound having excellent polymerization activity, and a method for producing polypropylene comprising polymerizing propylene in the presence of the catalyst. The supported metallocene-catalyst of the present invention can produce a polypropylene having a relatively narrow molecular weight distribution and a SPAN value.

公开(公告)号：US11345767B2

公开(公告)日：2022-05-31

申请号：US16960211

申请日：2019-10-28

Applicant: LG Chem, Ltd.

Inventor： Heekwang Park ,  Seong Min Chae ,  Kyung Seop Noh ,  Sangjin Jeon ,  Hyunsup Lee ,  Jihwa Ye

IPC: C08L23/14 ,  C08F210/06 ,  C08F4/6592 ,  C08F2/02 ,  C08F2/28 ,  C08F2/44 ,  C08F210/02 ,  C08F210/08 ,  C08L53/00 ,  D04H3/16

Abstract: A propylene copolymer resin composition capable of improving softness while maintaining excellent strength properties when preparing nonwoven fabrics, and a method for preparing the same are provided. The propylene copolymer resin composition includes a propylene-ethylene copolymer having an ethylene content of 12 to 18 wt % in the propylene-ethylene copolymer and a propylene-1-butene random copolymer satisfying the following conditions (i) to (iv), wherein (i) 1-butene content of 1 to 5 wt % in the propylene-1-butene random copolymer, (ii) molecular weight distribution of 2.4 or less, (iii) storage modulus of 1200 MPa or less at 25° C., and (iv) phase angle of 5.5° to 8° at a glass transition temperature, and wherein a weight ratio of the propylene-1-butene random copolymer to the propylene-ethylene copolymer is 80:20 to 99:1.

公开(公告)号：US11885044B2

公开(公告)日：2024-01-30

申请号：US16643651

申请日：2018-12-17

Applicant: LG Chem, Ltd.

Inventor： Kyung Seop Noh ,  Seong Min Chae ,  Churl Young Park ,  Sangjin Jeon ,  Taejin Kim

IPC: D01F6/06 ,  D04H1/4291 ,  C08F110/06 ,  D04H1/44 ,  D01D1/02 ,  D01D5/088 ,  C08F4/02

CPC classification number: D01F6/06 ,  C08F4/02 ,  C08F110/06 ,  D01D1/02 ,  D01D5/088 ,  D04H1/4291 ,  D04H1/44 ,  C08F2420/01 ,  D10B2321/022

Abstract: The polypropylene nonwoven fabric produced by the method for producing a polypropylene nonwoven fabric according to the present invention has features that it has excellent stretchability and excellent water pressure resistance.

公开(公告)号：US11731123B2

公开(公告)日：2023-08-22

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: C08F2/38 ,  B01J37/04 ,  C08F4/6592 ,  C08F10/06

CPC classification number: B01J37/04 ,  C08F4/65927 ,  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.