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.

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.

公开(公告)号：US20210332169A1

公开(公告)日：2021-10-28

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

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.