公开(公告)号：US10858465B2

公开(公告)日：2020-12-08

申请号：US16323991

申请日：2017-10-25

Applicant: LG CHEM, LTD.

Inventor： Jeong Kyu Lee ,  Pum Suk Park ,  In Young Song ,  Sung Joon Oh ,  Yi Young Choi ,  Soon Ho Sun

IPC: C08F210/16 ,  C08F4/6592 ,  C08F4/659

Abstract: The present invention relates to an ethylene/alpha-olefin copolymer and, more particularly, to an ethylene/alpha-olefin copolymer that exhibits excellent environmental stress crack resistance by appropriately controlling the ratio of crystal structure domain and amorphous domain, and the like. The ethylene/alpha-olefin copolymer comprises an ethylene repeating unit and an alpha-olefin repeating unit, and has a crystal structure including a crystalline domain containing lamellar crystals and an amorphous domain containing a tie molecule that mediates bonding between the lamellar crystals. The lamellar crystal thickness (dc) of the ethylene/alpha-olefin copolymer as calculated from the result of Small Angle X-ray Scattering (SAXS) analysis is between 12.0 and 16.0 nm, the amorphous domain thickness (da) is between 4.0 and 5.3 nm, and the thickness ratio da/dc is between 0.3 and 0.4.

公开(公告)号：US10704997B2

公开(公告)日：2020-07-07

申请号：US15749870

申请日：2017-03-09

Applicant: LG CHEM, LTD.

Inventor： Bog Ki Hong ,  Sung Hyun Park ,  Hyun Sup Lee ,  Yi Young Choi ,  Myung Han Lee ,  Soon Ho Sun

IPC: G01N3/08 ,  G01N3/04 ,  B32B27/32 ,  G02B3/00 ,  G01N3/14 ,  G01N3/30

Abstract: The present invention relates to a method for evaluating the properties of a plastic resin molded product, more specifically to a novel method for evaluating the properties of a plastic resin molded product that can exactly derive impact resistance of practically prepared molded products, using the property measurement values by the existing ASTM.

公开(公告)号：US10323110B2

公开(公告)日：2019-06-18

申请号：US15501415

申请日：2016-04-15

Applicant: LG CHEM, LTD.

Inventor： Soon Ho Sun ,  Yi Young Choi ,  Ki Soo Lee ,  Eun Kyoung Song ,  Yu Taek Sung ,  Ye Jin Lee ,  Chang Woan Han ,  Sol Cho

IPC: C08F210/08 ,  C08F210/16 ,  C08F4/6592 ,  C08L23/08 ,  C08F4/659

Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent processability. The ethylene/alpha-olefin copolymer according to the present invention has excellent processability and is therefore suitable for producing products by an injection molding method.

公开(公告)号：US10155830B2

公开(公告)日：2018-12-18

申请号：US15106708

申请日：2015-12-07

Applicant: LG CHEM, LTD.

Inventor： Joong Soo Kim ,  Soon Ho Sun ,  Oh Joo Kwon ,  Yi Young Choi ,  Ki Soo Lee

IPC: C08L23/08 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/659

Abstract: The present invention relates to an ethylene/alpha-olefin copolymer having excellent processability. The ethylene/alpha-olefin copolymer according to the present invention has low complex viscosity at high shear rate and has excellent processability, and thus it could be applied to the processing of a large diameter pipe, a complex pipe or the like.

公开(公告)号：US10815324B2

公开(公告)日：2020-10-27

申请号：US16088661

申请日：2017-11-02

Applicant: LG Chem, Ltd.

Inventor： Soon Ho Sun ,  Yo Han Bae ,  Hyeong Il Lee ,  Yi Young Choi ,  Bog Ki Hong ,  Sung Min Lee ,  Sun Mi Kim ,  Jin Young Park

IPC: C08F210/16 ,  C08F4/64 ,  C08F4/659 ,  C08F4/642

Abstract: Provided is an ethylene/alpha-olefin copolymer having excellent environmental stress crack resistance.

公开(公告)号：US10774163B2

公开(公告)日：2020-09-15

申请号：US16087119

申请日：2017-08-07

Applicant: LG Chem, Ltd.

Inventor： Sung Min Lee ,  Yi Young Choi ,  Bog Ki Hong ,  Soon Ho Sun ,  Sun Mi Kim ,  Jin Young Park ,  Ki Soo Lee

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/6592 ,  C08F4/653 ,  C08F4/659

Abstract: The ethylene/1-hexene copolymer according to the present invention has excellent processability and mechanical properties, and thus can be applied to various fields such as food containers.

公开(公告)号：US10774160B2

公开(公告)日：2020-09-15

申请号：US15748798

申请日：2017-02-06

Applicant: LG CHEM, LTD.

Inventor： Ye Jin Lee ,  Yi Young Choi ,  Ki Soo Lee ,  Se Young Kim ,  Sung Min Lee ,  Chang Woan Han ,  Soon Ho Sun

IPC: C08F4/653 ,  C08F4/6592 ,  C08F10/02 ,  C08F110/02 ,  C08L23/08 ,  B01J31/22 ,  C08F4/02 ,  C08F4/659

Abstract: The present invention relates to a supported hybrid catalyst system for ethylene slurry polymerization and a method for preparing ethylene polymer therewith. The supported hybrid catalyst system according to the present invention may exhibit high activity during ethylene slurry polymerization, and enables preparation of an ethylene polymer having a narrow molecular weight distribution but excellent processability.

公开(公告)号：US10669363B2

公开(公告)日：2020-06-02

申请号：US15767920

申请日：2017-09-20

Applicant: LG Chem, Ltd.

Inventor： Jin Young Park ,  Yi Young Choi ,  Bog Ki Hong ,  Sung Min Lee ,  Soon Ho Sun ,  Sun Mi Kim

IPC: C08F4/653 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/659

Abstract: The present invention relates to a catalyst composition for synthesizing an olefin copolymer, including a first metallocene catalyst, a second metallocene catalyst, and a third metallocene catalyst, each having a specific structure, and a method for preparing an olefin copolymer using the catalyst composition for synthesizing an olefin copolymer.

公开(公告)号：US10562994B2

公开(公告)日：2020-02-18

申请号：US15548736

申请日：2016-03-28

Applicant: LG CHEM, LTD.

Inventor： Young Suk You ,  Se Young Kim ,  Soon Ho Sun ,  Eun Kyoung Song ,  Seung Mi Lee ,  Yi Young Choi ,  Ki Soo Lee ,  Sun Mi Kim

IPC: C08F110/02 ,  C08F4/6592 ,  D01F6/04 ,  C08F4/659

Abstract: The present invention relates to polyolefin powder for preparing fiber, and fiber comprising the same. According to the present invention, provided is polyolefin, which exhibits a high molecular weight range and narrow molecular weight distribution and in which the formation of a gel deteriorating the quality of fiber is reduced. Therefore, by using the polyolefin, the present invention exhibits molecular weight, density and narrow molecular weight distribution, which are equivalent to those of conventional polyolefin, but the number of gels having a large particle diameter is remarkably reduced, and therefore, the present invention can provide fiber having excellent tenacity and tensile strength half-life.

公开(公告)号：US20200010584A1

公开(公告)日：2020-01-09

申请号：US16088177

申请日：2017-11-06

Applicant: LG Chem, Ltd.

Inventor： Bog Ki Hong ,  Kyung Jin Cho ,  Chang Woan Han ,  Soon Ho Sun ,  Sun Mi Kim ,  Yi Young Choi ,  Ki Soo Lee

IPC: C08F10/02

Abstract: The present invention relates to polyethylene resin having excellent impact strength, and more specifically, to polyethylene resin exhibiting excellent impact strength and flexural strength, when prepared into a molded product.