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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
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.
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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.
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公开(公告)号：US20200223962A1
公开(公告)日：2020-07-16
申请号：US16635730
申请日：2018-11-01
申请人： LG Chem, Ltd.
发明人： Seok Hwan Kim , Hyunsup Lee , Seong Min Chae , Taejin Kim , Dae Sik Hong , Sang Jin Jeon , Hee Kwang Park
IPC分类号： C08F110/06 , C07F17/00
摘要： 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.
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公开(公告)号：US11732069B2
公开(公告)日：2023-08-22
申请号：US17546307
申请日：2021-12-09
申请人： LG Chem, Ltd.
发明人： Seok Hwan Kim , Hyunsup Lee , Seong Min Chae , Taejin Kim , Dae Sik Hong , Sang Jin Jeon , Hee Kwang Park
IPC分类号： C08F4/6592 , C08F110/06 , C07F17/00
CPC分类号： C08F110/06 , C07F17/00 , C08F4/65927
摘要： 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.
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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.
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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
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.
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公开(公告)号：US20200240058A1
公开(公告)日：2020-07-30
申请号：US16643651
申请日：2018-12-17
申请人： LG Chem, Ltd.
发明人： Kyung Seop Noh , Seong Min Chae , Churl Young Park , Sangjin Jeon , Taejin Kim
IPC分类号： D04H1/4291 , C08F110/06 , D04H1/44
摘要： 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.
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公开(公告)号：US11913935B2
公开(公告)日：2024-02-27
申请号：US17059724
申请日：2019-06-21
申请人： LG Chem, Ltd.
发明人： Hyunsup Lee , Seong Min Chae , Kyung Seop Noh , Heekwang Park , Ki Soo Lee , Sangjin Jeon , Myunghan Lee
IPC分类号： G01N33/36 , D04H1/4291 , D04H1/56 , D04H3/007
CPC分类号： G01N33/367 , D04H1/4291 , D04H1/565 , D04H3/007 , G01N2203/0075
摘要： The present invention relates to polypropylene non-woven fabric having excellent loft property, a method for preparing polypropylene non-woven fabric having excellent loft property, and a method for evaluating the properties of the polypropylene resin.
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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.
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公开(公告)号：US11414537B2
公开(公告)日：2022-08-16
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
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.
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