公开(公告)号：US20200031962A1

公开(公告)日：2020-01-30

申请号：US16491214

申请日：2018-12-20

申请人： LG Chem, Ltd.

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

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

摘要： 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：US20240101732A1

公开(公告)日：2024-03-28

申请号：US18269358

申请日：2022-03-25

申请人： LG Chem, Ltd.

发明人： Kyung Seop Noh ,  Heekwang Park ,  Seong Min Chae ,  Jihwa Ye

IPC分类号： C08F110/06 ,  C08F2/00 ,  C08F4/6592 ,  C08L23/16

CPC分类号： C08F110/06 ,  C08F2/001 ,  C08F4/65927 ,  C08L23/16 ,  C08L2201/10 ,  C08L2205/025 ,  C08L2205/22 ,  C08L2314/06

摘要： In the present disclosure, there are provided a polypropylene resin composition including an ethylene propylene copolymer, and a method of preparing the same. In particular, the polypropylene resin composition of the present disclosure may be prepared by using a continuous reactor in the presence of a metallocene compound having a specific structure. The polypropylene resin composition of the present disclosure can exhibit high transparency together with excellent elongation by optimizing the xylene soluble, the content of ethylene, and the melt index, together with a narrow molecular weight distribution.

公开(公告)号：US20220135715A1

公开(公告)日：2022-05-05

申请号：US17435136

申请日：2020-12-04

申请人： LG Chem, Ltd.

发明人： Seong Min Chae ,  Hyunsup Lee ,  Kyung Seop Noh ,  Heekwang Park ,  Jihwa Ye

IPC分类号： C08F110/06 ,  C07F17/00 ,  D01F6/06 ,  D01D5/08

摘要： The present disclosure relates to a polypropylene resin exhibiting excellent processability and capable of producing fine fibers, a polypropylene fiber including the same, and a method for preparing the same.

公开(公告)号：US11384227B2

公开(公告)日：2022-07-12

申请号：US16963980

申请日：2019-11-04

申请人： LG Chem, Ltd.

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

IPC分类号： C08L23/06 ,  C08L23/12

摘要： 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：US11345767B2

公开(公告)日：2022-05-31

申请号：US16960211

申请日：2019-10-28

申请人： LG Chem, Ltd.

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

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

摘要： 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：US20220213303A1

公开(公告)日：2022-07-07

申请号：US17602495

申请日：2020-06-11

申请人： LG Chem, Ltd.

发明人： Byung Seok Kim ,  Insun Lee ,  Seok Hwan Kim ,  Jung Won Lee ,  Donghyeon Gwon ,  Seyoung Kim ,  Heekwang Park ,  Jihwa Ye

IPC分类号： C08L23/16 ,  C08F4/6592 ,  C08F210/06

摘要： The present disclosure relates to a propylene-ethylene random copolymer for high transparency injection that has a low total volatile organic compound emission (TVOC), excellent processability, and maximizing ethylene content.

公开(公告)号：US20210061931A1

公开(公告)日：2021-03-04

申请号：US16960211

申请日：2019-10-28

申请人： LG Chem, Ltd.

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

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

摘要： 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：US20210040294A1

公开(公告)日：2021-02-11

申请号：US16963980

申请日：2019-11-04

申请人： LG Chem, Ltd.

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

IPC分类号： C08L23/06 ,  C08L23/12

摘要： 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：US12065560B2

公开(公告)日：2024-08-20

申请号：US17602495

申请日：2020-06-11

申请人： LG Chem, Ltd.

发明人： Byung Seok Kim ,  Insun Lee ,  Seok Hwan Kim ,  Jung Won Lee ,  Donghyeon Gwon ,  Seyoung Kim ,  Heekwang Park ,  Jihwa Ye

IPC分类号： C08F210/16 ,  C08F4/6592 ,  C08F210/06 ,  C08L23/16 ,  C08F210/02

CPC分类号： C08L23/16 ,  C08F4/65927 ,  C08F210/06 ,  C08F210/16 ,  C08F210/02 ,  C08F2500/12 ,  C08F2500/27 ,  C08F2500/33 ,  C08F2500/34 ,  C08F2800/20 ,  C08L2201/10 ,  C08L2203/30

摘要： The present disclosure relates to a propylene-ethylene random copolymer for high transparency injection that has a low total volatile organic compound emission (TVOC), excellent processability, and maximizing ethylene content.

公开(公告)号：US20240052074A1

公开(公告)日：2024-02-15

申请号：US18267926

申请日：2022-03-25

申请人： LG Chem, Ltd.

发明人： Kyung Seop Noh ,  Heekwang Park ,  Seong Min Chae ,  Jihwa Ye

IPC分类号： C08F210/06 ,  C08L23/12 ,  D04H1/4291

CPC分类号： C08F210/06 ,  C08L23/12 ,  D04H1/4291 ,  C08F2800/20 ,  C08L2205/025 ,  C08L2203/12 ,  D10B2321/022 ,  D10B2401/06

摘要： In the present disclosure, there are provided a polypropylene resin composition including an ethylene propylene copolymer, and a nonwoven fabric produced therefrom. In particular, the polypropylene resin composition of the present disclosure may be prepared by using a continuous reactor in the presence of a metallocene compound having a specific structure. The polypropylene resin composition of the present disclosure can maintain high strength together with excellent processability. Thus, the polypropylene resin composition of the present disclosure can produce a soft nonwoven fabric, as compared to the existing products, by optimizing xylene soluble, the content of ethylene, a melt index, a crystallization temperature, a tensile strength and a flexural modulus, together with the narrow molecular weight distribution.