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公开(公告)号：US20230334195A1
公开(公告)日：2023-10-19
申请号：US18028809
申请日：2022-08-22
Applicant: LG Chem, Ltd.
Inventor： Sung Nam Moon , Hyun Tae Kim , Sang Jin Jeon , Jin Mi Jung , Jin Uk Choi , Dam Hyeok Im
IPC: G06F30/20
CPC classification number: G06F30/20
Abstract: The present technology relates to a system and method for predicting the physical properties of a multilayer material, and the system and method may predict physical properties such as the elastic modulus, shear modulus, and Poisson's ratio of an entire laminate when a multilayer material having a laminated structure is developed, and may predict not only the homogenized robustness of the entire laminate of the multilayer material, but also the stress and strain of each layer at the time of occurrence of external forces including expansion stress considering environmental factors such as a temperature change or a humidity change are generated.
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公开(公告)号：US10976229B2
公开(公告)日：2021-04-13
申请号：US16090732
申请日：2017-08-31
Applicant: LG Chem, Ltd.
Inventor： Hyun Sup Lee , Ki Soo Lee , Sang Jin Jeon , Sang Eun An , Myung Han Lee , Hee Kwang Park , Sang Eun Kim , Sang Hoon Lee
Abstract: The present invention relates to a method for predicting the break-up possibility of a synthetic resin filament in a melt blowing process from the rheological properties of the synthetic resin. According to the present invention, a method that is capable of predicting the break-up possibility of the synthetic resin filament in the melt blowing process for preparing a filament using the synthetic resin in advance, through the measurement of the rheological properties of the synthetic resin, is provided.
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公开(公告)号：US20190113428A1
公开(公告)日：2019-04-18
申请号：US16090732
申请日：2017-08-31
Applicant: LG Chem, Ltd.
Inventor： Hyun Sup Lee , Ki Soo Lee , Sang Jin Jeon , Sang Eun An , Myung Han Lee , Hee Kwang Park , Sang Eun Kim , Sang Hoon Lee
IPC: G01N11/00
Abstract: The present invention relates to a method for predicting the break-up possibility of a synthetic resin filament in a melt blowing process from the rheological properties of the synthetic resin. According to the present invention, a method that is capable of predicting the break-up possibility of the synthetic resin filament in the melt blowing process for preparing a filament using the synthetic resin in advance, through the measurement of the rheological properties of the synthetic resin, is provided.
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公开(公告)号：US09771441B2
公开(公告)日：2017-09-26
申请号：US15023626
申请日：2014-09-30
Applicant: LG CHEM, LTD.
Inventor： Ji Ho Choi , Churl Young Park , Kyung Seop Noh , Won Hee Kim , Sang Jin Jeon , Ra Yun Choi , Byung Seok Kim
IPC: C08F4/6592 , C08F4/642 , C08F4/643 , C08F110/06 , C08F4/659
CPC classification number: C08F110/06 , C08F4/65908 , C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F2500/12 , C08F2500/24 , C08F2500/02
Abstract: The present invention relates to a preparation method of a polypropylene and a polypropylene obtained therefrom. More specifically, it relates to a method of preparing a polypropylene by using a catalyst that includes a novel metallocene compound having an excellent polymerization activity, and a polypropylene obtained by the method.According to the present invention, since the polypropylene is prepared by polymerizing propylene by using a novel metallocene compound having an excellent polymerization activity and hydrogen reactivity, the properties of the polypropylene can be easily controlled and the polypropylene having excellent mechanical properties can be obtained.
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公开(公告)号：US11198779B2
公开(公告)日：2021-12-14
申请号：US16616168
申请日：2018-07-11
Applicant: LG Chem, Ltd.
Inventor： Hee Kwang Park , Kyung Seop Noh , Sang Jin Jeon , Hyunsup Lee , In Sun Lee , Jin Hyun Park , Changkwon Chung
IPC: C08F210/06 , C08F210/08 , C08F4/6592 , C08L23/20
Abstract: The present invention relates to a propylene-butene copolymer resin composition used for non-woven fabric, a method of preparing the same, and spunbond non-woven fabric manufactured using the composition, and particularly, by optimizing a content of 1-buttene in a metallocene polypropylene resin composition to 0.5 to 5.0 wt %, while simultaneously optimizing both of a melt index and a residual stress ratio of the resin composition, has a merit of having a reduced modulus together with a high conversion rate to manufacture non-woven fabric which is softer than existing products while maintaining high strength.
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Patent Agency Ranking
公开(公告)号：US11111323B2
公开(公告)日：2021-09-07
申请号：US16636719
申请日：2018-11-08
Applicant: LG Chem, Ltd.
Inventor： Hee Kwang Park , Byung Seok Kim , Kyung Seop Noh , Sang Jin Jeon , Seong Min Chae
IPC: C08F110/06 , C08F4/659 , C08F4/76 , D04H1/4291 , C08F2/02 , C08F4/6592
Abstract: The present invention relates to homopolypropylene resin for non-woven fabric, and according to the present invention, by optimizing tacticity to 80% to 90%, having narrow molecular weight distribution of 2.4 or less, and fulfilling melt index of 20 g/10 min to 30 g/10 min, melting point of 145° C. or less, and residual stress rate of 0.05% or less, thereby optimizing modulus, high strength non-woven fabric that is softer than the existing products, and is not easily torn due to high tenacity, can be prepared.
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公开(公告)号：US11077434B2
公开(公告)日：2021-08-03
申请号：US15774448
申请日：2017-07-07
Applicant: LG Chem, Ltd.
Inventor： Hee Kwang Park , Hye Kyung Lee , Byung Seok Kim , Jae Youp Cheong , Sang Jin Jeon
IPC: C08F4/76 , B01J31/22 , C08F110/06 , B01J37/03 , C08F4/658 , C08F4/6592 , C08F4/659 , C08F10/06
Abstract: A method of preparing a high-purity metallocene catalyst capable of providing various selectivities and high activities for polyolefin copolymers, wherein a metallocene compound is formed by reacting a ligand compound with a zirconium compound, and then lithium chloride as a reaction by-product included in the metallocene compound is prepared in a form of a complex compound and effectively removed in a subsequent step of extracting the catalyst, thereby effectively preparing the high-purity metallocene catalyst, is provided.
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公开(公告)号：US10906998B2
公开(公告)日：2021-02-02
申请号：US16241498
申请日：2019-01-07
Applicant: LG CHEM, LTD.
Inventor： Kyung Seop Noh , Ji Ho Choi , Churl Young Park , Ki Soo Lee , Sang Jin Jeon , Hee Kwang Park , Won-Sang Lee , Ah Young Seo
IPC: C08F210/16 , C08J5/18 , C09J123/16 , C08L23/14 , C08F4/659
Abstract: The polypropylene copolymer according to the present invention has a low melting point and also is excellent in the low temperature heat sealing effect, transparency and strength, and the film prepared therefrom can be effectively used as a sealing layer of the non-stretched polypropylene-based film.
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公开(公告)号：US20200239609A1
公开(公告)日：2020-07-30
申请号：US16636719
申请日：2018-11-08
Applicant: LG Chem, Ltd.
Inventor： Hee Kwang Park , Byung Seok Kim , Kyung Seop Noh , Sang Jin Jeon , Seong Min Chae
IPC: C08F110/06 , D04H1/4291
Abstract: The present invention relates to homopolypropylene resin for non-woven fabric, and according to the present invention, by optimizing tacticity to 80% to 90%, having narrow molecular weight distribution of 2.4 or less, and fulfilling melt index of 20 g/10 min to 30 g/10 min, melting point of 145° C. or less, and residual stress rate of 0.05% or less, thereby optimizing modulus, high strength non-woven fabric that is softer than the existing products, and is not easily torn due to high tenacity, can be prepared.
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公开(公告)号：US10214601B2
公开(公告)日：2019-02-26
申请号：US15111631
申请日：2015-12-04
Applicant: LG CHEM, LTD.
Inventor： Kyung Seop Noh , Ji Ho Choi , Churl Young Park , Ki Soo Lee , Sang Jin Jeon , Hee Kwang Park , Won-Sang Lee , Ah Young Seo
IPC: C08F110/00 , C08F210/16 , C08J5/18 , C09J123/16 , C08L23/14 , C08F4/659
Abstract: The polypropylene copolymer according to the present invention has a low melting point and also is excellent in the low temperature heat sealing effect, transparency and strength, and the film prepared therefrom can be effectively used as a sealing layer of the non-stretched polypropylene-based film.
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