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25 条记录 (耗时 0.018 秒)

    Polyolefin
    1.
    发明授权
    Polyolefin 有权

    公开(公告)号：US11542351B2

    公开(公告)日：2023-01-03

    申请号：US17268146

    申请日：2019-12-20

    申请人： LG Chem, Ltd.

    发明人： Jeongkyu Lee ,  Sung Min Lee ,  Hyojoon Lee ,  Chang Hwan Jang ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Sung Joon Oh ,  Seyoung Kim ,  Jisoo Song

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

    摘要： The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100° C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100° C. or more and 120° C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120° C. is 0.10 to 0.14.

    Polyolefin
    2.
    发明申请
    Polyolefin 有权

    公开(公告)号：US20210332169A1

    公开(公告)日：2021-10-28

    申请号：US17268146

    申请日：2019-12-20

    申请人： LG Chem, Ltd.

    发明人： Jeongkyu Lee ,  Sung Min Lee ,  Hyojoon Lee ,  Chang Hwan Jang ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Sung Joon Oh ,  Seyoung Kim ,  Jisoo Song

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

    摘要： The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100° C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100° C. or more and 120° C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120° C. is 0.10 to 0.14.

    Active Material Analysis Apparatus
    3.
    发明申请
    Active Material Analysis Apparatus 有权

    公开(公告)号：US20210328273A1

    公开(公告)日：2021-10-21

    申请号：US16769126

    申请日：2019-09-18

    申请人： LG Chem, Ltd.

    发明人： Yeon Wook Jung ,  Sung Joon Oh

    IPC分类号： H01M10/42 ,  G01N21/65 ,  H01M10/44 ,  H01M10/48 ,  H01M4/505 ,  H01M4/525

    摘要： The present invention relates to an active material analysis apparatus for analyzing an active material of a battery. An active material analysis apparatus of the present invention may comprise: a lower plate at which an electrode is located; an upper plate which is coupled to the lower plate with the electrode disposed therebetween; a sealing member positioned at a joint part between the upper plate and the lower plate; and a coupling member for coupling the upper plate and the lower plate, wherein: the upper plate includes an opening provided to allow a light source to be radiated to the electrode; an electrolyte is filled in a space between the upper plate and the lower plate; the opening is covered by glass; and the upper plate faces a liquid surface formed by the electrolyte and is positioned at a position higher than that of the liquid surface.

    Method for analyzing cohesive failure of electrode
    4.
    发明授权
    Method for analyzing cohesive failure of electrode 有权

    公开(公告)号：US11552288B2

    公开(公告)日：2023-01-10

    申请号：US16995976

    申请日：2020-08-18

    申请人： LG CHEM, LTD.

    发明人： In Young Song ,  Joo Yul Baek ,  Jeong Kyu Lee ,  Sung Joon Oh ,  Jong Chan Lee

    IPC分类号： H01M10/42 ,  H01M4/36 ,  H01M4/04 ,  H01M4/133 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

    摘要： A method for quantitatively analyzing cohesive failure of an electrode analyzes cohesive failure of an electrode and includes preparing an electrode in which an electrode material mixture layer including an electrode active material, a conductive agent, and a binder is formed on a current collector, measuring shear strength (σ) data according to a cutting depth while cutting the electrode material mixture layer from a surface thereof until reaching the current collector using a surface and interfacial cutting analysis system (SAICAS), obtaining a regression curve of shear strength according to the cutting depth from the shear strength (σ) data, and determining a cutting depth, at which the shear strength is minimum in the regression curve, as a location of cohesive failure.

    Ethylene/alpha-olefin copolymer
    5.
    发明授权
    Ethylene/alpha-olefin copolymer 有权

    公开(公告)号：US10858465B2

    公开(公告)日：2020-12-08

    申请号：US16323991

    申请日：2017-10-25

    申请人： LG CHEM, LTD.

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

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

    摘要： 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.

    Polyethylene and Preparation Method Thereof
    8.
    发明公开
    Polyethylene and Preparation Method Thereof 审中-公开

    公开(公告)号：US20240026041A1

    公开(公告)日：2024-01-25

    申请号：US18036091

    申请日：2021-11-29

    申请人： LG Chem, Ltd.

    发明人： Yeonji Choe ,  Jongchan Lee ,  Jeongkyu Lee ,  Christine Jisoo Song ,  Hee Su Oh ,  Jiwon Yoon ,  Yi Young Choi ,  Sung Joon Oh

    IPC分类号： C08F10/02

    CPC分类号： C08F10/02

    摘要： Provided are a polyethylene having excellent processability and capable of reducing an injection molding defect rate, and a method of preparing the same. The polyethylene has an integral value in the region where the Log Mw is 5.5 or more in a GPC curve, wherein the x-axis is log Mw and the y-axis is dw/dlogMw, of 9% or less of the total integral value: and has a ratio (Tc10/Tc40) of a crystallization temperature (Tc10) measured at a cooling rate of 10° C./min to a crystallization temperature (Tc40) measured at a cooling rate of 40° C./min of less than 1.04.