公开(公告)号：US12173142B2

公开(公告)日：2024-12-24

申请号：US17427481

申请日：2020-02-20

Applicant: LG Chem, Ltd.

Inventor： Sol Cho ,  Hyunsup Lee ,  Sun Mi Kim ,  Yi Young Choi ,  Myunghan Lee ,  Yeonsoo Kim

IPC: C08F10/02 ,  C08F4/64 ,  C08F4/659 ,  C08F4/6592 ,  C08K5/14 ,  C08L23/06 ,  C08F110/02

Abstract: The present disclosure relates to a polyethylene having high degree of crosslinking and a crosslinked polyethylene pipe including the same. The polyethylene according to the present disclosure has a high content of ultra-high molecular weight, and thus a crosslinking rate is improved, and thus a sufficient degree of crosslinking is exhibited even when the crosslinking time is shortened, thereby exhibiting excellent strength and pressure resistance characteristics.

公开(公告)号：US12065514B2

公开(公告)日：2024-08-20

申请号：US17414616

申请日：2020-02-20

Applicant: LG Chem, Ltd.

Inventor： Sol Cho ,  Hyunsup Lee ,  Sun Mi Kim ,  Yi Young Choi ,  Myunghan Lee ,  Yeonsoo Kim

IPC: C08F110/02 ,  C08F4/659 ,  C08F4/6592 ,  C08J3/24 ,  C08K5/14 ,  C08L23/06 ,  F16L11/04

CPC classification number: C08F110/02 ,  C08F4/65916 ,  C08F4/65927 ,  C08J3/24 ,  C08K5/14 ,  C08L23/06 ,  F16L11/04 ,  C08L2203/18 ,  C08L2207/062 ,  C08L2312/00 ,  C08L2314/06

Abstract: The present disclosure relates to a polyethylene having high pressure resistance and a crosslinked polyethylene pipe including the same. The polyethylene according to the present disclosure has high melt index and density and exhibits a sufficient degree of crosslinking, thereby exhibiting excellent strength and pressure resistance characteristics.

公开(公告)号：US10766985B2

公开(公告)日：2020-09-08

申请号：US15760986

申请日：2017-02-22

Applicant: LG CHEM, LTD.

Inventor： Sol Cho ,  Sung Hyun Park ,  Oh Joo Kwon ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Myung Han Lee ,  Hyun Jee Kwon

IPC: C08L23/08 ,  C08F210/16 ,  C08F4/653 ,  C08F4/6592 ,  C08F210/02 ,  C08F4/659

Abstract: The present invention relates to an olefin polymer and a preparation method thereof. The olefin polymer exhibits excellent mechanical strength and high processability, and thus is expected to be utilized as a material for various products. Particularly, the olefin polymer can be stably produced into films by a melt-blowing process and thus is expected to be usefully used as a material for products prepared by a melt-blowing process.

公开(公告)号：US20200231789A1

公开(公告)日：2020-07-23

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

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.

公开(公告)号：US20190284317A1

公开(公告)日：2019-09-19

申请号：US16318259

申请日：2017-07-28

Applicant: LG Chem, Ltd.

Inventor： Oh Joo Kwon ,  Sol Cho ,  Seung Ki Park ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Sung Hyun Park ,  Sung Ho Park ,  Jin Young Lee

IPC: C08F210/16 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/14

Abstract: The present disclosure provides an olefin polymer having excellent film processability and physical properties, and a preparation method of the same.

公开(公告)号：US20190225721A1

公开(公告)日：2019-07-25

申请号：US16313640

申请日：2017-11-07

Applicant: LG Chem, Ltd.

Inventor： Sol Cho ,  Ki Soo Lee ,  Heon Yong Kwon ,  Sung Hyun Park ,  Myung Han Lee ,  Oh Joo Kwon ,  Seung Mi Lee ,  Eun Ji Shin ,  Hyun Jee Kwon ,  Sung Ho Park ,  Seul Ki Im ,  Jin Young Lee

IPC: C08F210/16 ,  C08J5/18

Abstract: The present invention provides an olefin polymer in which LCB (long chain branch) is introduced into mLLDPE (metallocene linear low-density polyethylene) to control the storage modulus, whereby the olefin polymer has excellent bubble stability and processing load characteristics and exhibits excellent processability during preparation of a film, and further has excellent mechanical properties and transparency.

公开(公告)号：US20180016372A1

公开(公告)日：2018-01-18

申请号：US15546474

申请日：2016-12-23

Applicant: LG Chem, Ltd.

Inventor： Oh Joo Kwon ,  Sol Cho ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Sung Hyun Park ,  Myung Han Lee

IPC: C08F210/16

Abstract: The low density polyethylene copolymer according to the present invention is characterized in that as LCB (Long Chain Branch) is introduced into LLDPE, the melt strength is remarkably high even without blending with LDPE, and thus it can be advantageously applied to blown film processing and the like.

公开(公告)号：US20220089797A1

公开(公告)日：2022-03-24

申请号：US17541434

申请日：2021-12-03

Applicant: LG Chem, Ltd.

Inventor： Oh Joo Kwon ,  Sol Cho ,  Seung Ki Park ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Sung Hyun Park ,  Sung Ho Park ,  Jin Young Lee

IPC: C08F210/16 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/14 ,  C08J5/18 ,  C08L23/08

Abstract: The present disclosure provides an olefin polymer having excellent film processability and physical properties, and a preparation method of the same.

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.

公开(公告)号：US10508164B2

公开(公告)日：2019-12-17

申请号：US15546474

申请日：2016-12-23

Applicant: LG Chem, Ltd.

Inventor： Oh Joo Kwon ,  Sol Cho ,  Ki Soo Lee ,  Heon Yong Kwon ,  Dae Sik Hong ,  Sung Hyun Park ,  Myung Han Lee

IPC: C08F210/02 ,  C08F210/16

Abstract: The low density polyethylene copolymer according to the present invention is characterized in that as LCB (Long Chain Branch) is introduced into LLDPE, the melt strength is remarkably high even without blending with LDPE, and thus it can be advantageously applied to blown film processing and the like.