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    Polyethylene resin film
    6.
    发明授权
    Polyethylene resin film 有权

    公开(公告)号：US11118040B2

    公开(公告)日：2021-09-14

    申请号：US16487715

    申请日：2018-12-03

    Applicant: LG Chem, Ltd.

    Inventor： Sol Cho ,  Yi Young Choi ,  Chang Hwan Jang ,  Seyoung Kim ,  Sung Min Lee ,  Seul Ki Im ,  Jinyoung Lee ,  Hyojoon Lee

    IPC: C08L23/08 ,  C08L23/16

    Abstract: Provided is a polyethylene resin film exhibiting more improved transparency while exhibiting excellent processability and mechanical properties. The polyethylene resin film having a density of 0.910 g/cm3 to 0.930 g/cm3, and a haze of 10% or less at a thickness of 90 μm to 110 μm includes a first polyethylene resin and a second polyethylene resin at a weight ratio of 6:4 to 8:2, wherein the first polyethylene resin has an MFRR (21.6/2.16) value of 27 to 40, and the second polyethylene resin has an MFRR (21.6/2.16) value of 15 to 23, and the MFRR (21.6/2.16) value is obtained by dividing a melt flow rate (MFR21.6) measured at a temperature of 230° C. under a load of 21.6 kg in accordance with ISO 1133 by a melt flow rate (MFR2.16) measured at a temperature of 230° C. under a load of 2.16 kg in accordance with ISO 1133.

    Polyolefin
    7.
    发明授权
    Polyolefin 有权

    公开(公告)号：US12221498B2

    公开(公告)日：2025-02-11

    申请号：US17282524

    申请日：2019-12-20

    Applicant: LG Chem, Ltd.

    Inventor： Jinyoung Lee ,  Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Seok Hwan Kim ,  Daesik Hong

    IPC: C08F210/16 ,  C08F210/18

    Abstract: 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 has an ethylene sequence inhomogeneity (I) calculated by the following Equation 1 of 1.25 to 1.40, when analyzed by SSA (Successive Self-nucleation and Annealing): Inhomogeneity (I)=Lw/Ln  [Equation 1] in the Equation 1, Lw is weighted average (unit: nm) of ESL (Ethylene sequence length), and Ln is arithmetic mean (unit: nm) of ESL (Ethylene sequence length).

    Polyolefin
    8.
    发明授权
    Polyolefin 有权

    公开(公告)号：US11987655B2

    公开(公告)日：2024-05-21

    申请号：US17278005

    申请日：2019-12-20

    Applicant: LG Chem, Ltd.

    Inventor： Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Chang Hwan Jang ,  Daesik Hong ,  Jisoo Song

    IPC: C08F210/16

    CPC classification number: C08F210/16 ,  C08F2500/10

    Abstract: The present invention relates to polyolefin. More specifically, the present invention relate s to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency and satisfying one of the following 1)˜4):



    1) when density is 0.9165 g/cm3 or more and less than 0.9175 g/cm3, the content of SCB (Short Chain Branch) is 9.5 to 10.5 wt %,
    2) when density is 0.9175 g/cm3 or more and less than 0.9185 g/cm3, the content of SCB (Short Chain Branch) is 9.0 to 10.0 wt %,
    3) when density is 0.9185 g/cm3 or more and less than 0.9195 g/cm3, the content of SCB (Short Chain Branch) is 8.5 to 9.5 wt %,
    4) when density is 0.9195 g/cm3 or more and less than 0.9205 g/cm3, the content of SCB (Short Chain Branch) is 7.5 to 8.5 wt %,
    wherein the density is measured according to ASTM D1505.

    Polyolefin
    9.
    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

    Applicant: LG Chem, Ltd.

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

    Abstract: 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
    10.
    发明申请
    Polyolefin 有权

    公开(公告)号：US20210371558A1

    公开(公告)日：2021-12-02

    申请号：US17278005

    申请日：2019-12-20

    Applicant: LG Chem, Ltd.

    Inventor： Sung Min Lee ,  Jeongkyu Lee ,  Hyojoon Lee ,  Seyoung Kim ,  Sung Ho Park ,  Seul Ki Im ,  Jinyoung Lee ,  Chang Hwan Jang ,  Daesik Hong ,  Jisoo Song

    IPC: C08F210/16

    Abstract: The present invention relates to polyolefin. More specifically, the present invention relate s to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency and satisfying one of the following 1)˜4): 1) when density is 0.9165 g/cm3 or more and less than 0.9175 g/cm3, the content of SCB (Short Chain Branch) is 9.5 to 10.5 wt %, 2) when density is 0.9175 g/cm3 or more and less than 0.9185 g/cm3, the content of SCB (Short Chain Branch) is 9.0 to 10.0 wt %, 3) when density is 0.9185 g/cm3 or more and less than 0.9195 g/cm3, the content of SCB (Short Chain Branch) is 8.5 to 9.5 wt %, 4) when density is 0.9195 g/cm3 or more and less than 0.9205 g/cm3, the content of SCB (Short Chain Branch) is 7.5 to 8.5 wt %, wherein the density is measured according to ASTM D1505.

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