公开(公告)号：US11414537B2

公开(公告)日：2022-08-16

申请号：US16963980

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Seong Min Chae ,  Jihwa Ye ,  Kyung Seop Noh ,  Heekwang Park ,  Taejin Kim ,  Daeyeon Lee

IPC: C08L23/06 ,  C08L23/12

Abstract: The present invention provides a resin composition for core-sheath type bi-component fiber that not only maintains excellent softness, but also improves tensile strength, when preparing non-woven fabric, particularly spunbond non-woven fabric.

公开(公告)号：US11339234B2

公开(公告)日：2022-05-24

申请号：US16765250

申请日：2019-10-30

Applicant: LG Chem, Ltd.

Inventor： Jihwa Ye ,  Taejin Kim ,  Kyung Seop Noh ,  Heekwang Park ,  Seong Min Chae ,  Daeyeon Lee

IPC: C08F210/06 ,  C08F4/6592 ,  C07F17/00

Abstract: Provided is a propylene random copolymer having excellent processability. The propylene random copolymer according to the present invention may exhibit high stiffness and flexural modulus together with a low shrinkage ratio, thereby being usefully applied to articles for thin wall injection molding.

公开(公告)号：US11117990B2

公开(公告)日：2021-09-14

申请号：US16491214

申请日：2018-12-20

Applicant: LG Chem, Ltd.

Inventor： Taejin Kim ,  Ha Na Park ,  Seong Min Chae ,  In Yong Jung ,  Daeyeon Lee ,  Jihwa Ye ,  Heekwang Park

IPC: C08F110/06 ,  C08F4/64 ,  C08F4/76 ,  D04H1/4291 ,  D04H3/007 ,  C08F4/6192

Abstract: A homopolypropylene has i) a molecular weight distribution of less than 2.4; ii) a melt index (measured at 230° C. under a load of 2.16 kg in accordance with ASTM D1238) of 5 to 3000 g/10 min; iii) a remaining stress ratio of 0.5% or less; and iv) a complex viscosity of 5 to 600 Pa·s at an angular frequency of 1 rad/s and a complex viscosity of 5 to 300 Pa·s at an angular frequency of 100 rad/s. A method for preparing the homopolyproylene is also provided. A molded article and a non-woven fabric are also provided.

公开(公告)号：US20200031962A1

公开(公告)日：2020-01-30

申请号：US16491214

申请日：2018-12-20

Applicant: LG Chem, Ltd.

Inventor： Taejin Kim ,  Ha Na Park ,  Seong Min Chae ,  In Yong Jung ,  Daeyeon Lee ,  Jihwa Ye ,  Heekwang Park

IPC: C08F110/06 ,  D04H1/4291 ,  D04H3/007

Abstract: A homopolypropylene has i) a molecular weight distribution of less than 2.4; ii) a melt index (measured at 230° C. under a load of 2.16 kg in accordance with ASTM D1238) of 5 to 3000 g/10 min; iii) a remaining stress ratio of 0.5% or less; and iv) a complex viscosity of 5 to 600 Pa·s at an angular frequency of 1 rad/s and a complex viscosity of 5 to 300 Pa·s at an angular frequency of 100 rad/s. A method for preparing the homopolyproylene is also provided. A molded article and a non-woven fabric are also provided.

公开(公告)号：US11732069B2

公开(公告)日：2023-08-22

申请号：US17546307

申请日：2021-12-09

Applicant: LG Chem, Ltd.

Inventor： Seok Hwan Kim ,  Hyunsup Lee ,  Seong Min Chae ,  Taejin Kim ,  Dae Sik Hong ,  Sang Jin Jeon ,  Hee Kwang Park

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

CPC classification number: C08F110/06 ,  C07F17/00 ,  C08F4/65927

Abstract: The present disclosure relates to a polypropylene for injection having a high content of ultra-high molecular weight and excellent rigidity, and a method for preparing the same.

公开(公告)号：US20210040294A1

公开(公告)日：2021-02-11

申请号：US16963980

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Seong Min Chae ,  Jihwa Ye ,  Kyung Seop Noh ,  Heekwang Park ,  Taejin Kim ,  Daeyeon Lee

IPC: C08L23/06 ,  C08L23/12

Abstract: The present invention provides a resin composition for core-sheath type bi-component fiber that not only maintains excellent softness, but also improves tensile strength, when preparing non-woven fabric, particularly spunbond non-woven fabric.

公开(公告)号：US20200240058A1

公开(公告)日：2020-07-30

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: D04H1/4291 ,  C08F110/06 ,  D04H1/44

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：US11384227B2

公开(公告)日：2022-07-12

申请号：US16963980

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Seong Min Chae ,  Jihwa Ye ,  Kyung Seop Noh ,  Heekwang Park ,  Taejin Kim ,  Daeyeon Lee

IPC: C08L23/06 ,  C08L23/12

Abstract: The present invention provides a resin composition for core-sheath type bi-component fiber that not only maintains excellent softness, but also improves tensile strength, when preparing non-woven fabric, particularly spunbond non-woven fabric.

公开(公告)号：US20200223962A1

公开(公告)日：2020-07-16

申请号：US16635730

申请日：2018-11-01

Applicant: LG Chem, Ltd.

Inventor： Seok Hwan Kim ,  Hyunsup Lee ,  Seong Min Chae ,  Taejin Kim ,  Dae Sik Hong ,  Sang Jin Jeon ,  Hee Kwang Park

IPC: C08F110/06 ,  C07F17/00

Abstract: The present disclosure relates to a polypropylene for injection having a high content of ultra-high molecular weight and excellent rigidity, and a method for preparing the same.

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.