公开(公告)号：US20210238317A1

公开(公告)日：2021-08-05

申请号：US16972280

申请日：2020-02-20

申请人： LG Chem, Ltd.

发明人： Seungmi Lee ,  Ki Soo Lee ,  Hyun Jee Kwon ,  Poeun Kim ,  Yongwoo Kwon

IPC分类号： C08F4/6592 ,  C08F110/02 ,  C08F4/659 ,  C08F4/52 ,  C07F7/00

摘要： According to the present disclosure, a catalyst composition capable of preparing a polyolefin having excellent mechanical stability, while exhibiting excellent process stability and high polymerization activity during the preparation of a polyolefin in a slurry process, and a method for preparing a polyolefin using the same is provided.

公开(公告)号：US11840596B2

公开(公告)日：2023-12-12

申请号：US16972280

申请日：2020-02-20

申请人： LG Chem, Ltd.

发明人： Seungmi Lee ,  Ki Soo Lee ,  Hyun Jee Kwon ,  Poeun Kim ,  Yongwoo Kwon

IPC分类号： C08F4/6592 ,  C08F4/653 ,  C08F210/16 ,  C08L23/08 ,  C07F7/00 ,  C08F4/52 ,  C08F4/659 ,  C08F110/02

CPC分类号： C08F4/65925 ,  C07F7/00 ,  C08F4/52 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F110/02 ,  C08F2420/07 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/18 ,  C08L23/0815

摘要： A catalyst composition, a method of preparing a polyolefin including the same, and a polyolefin prepared from the same are disclosed herein. In some embodiments, a catalyst composition comprises a first transition metal compound represented by Chemical Formula 1, and a second transition metal compound represented by Chemical Formula 2, wherein a molar ratio of the first transition compound to the second transition metal compound ranges from 1:0.3 to 1:3.5. The catalyst composition is capable of preparing a polyolefin having excellent mechanical stability, while exhibiting excellent process stability and high polymerization activity during the preparation of a polyolefin in a slurry process.

公开(公告)号：US20220242977A1

公开(公告)日：2022-08-04

申请号：US17606634

申请日：2020-11-20

申请人： LG Chem, Ltd.

发明人： Poeun Kim ,  Seungmi Lee ,  Hyun Jee Kwon ,  Ki Soo Lee ,  Yongwoo Kwon

IPC分类号： C08F4/6592 ,  C08F210/02

摘要： The present disclosure provides a hybrid supported metallocene catalyst useful for preparing a polyethylene copolymer exhibiting excellent process stability and high polymerization activity in ethylene polymerization, and excellent mechanical properties by high comonomer incorporation. The hybrid supported metallocene catalyst comprises at least one first metallocene compound selected from compounds represented by the following Chemical Formula 1; and at least one second metallocene compound selected from compounds represented by the following Chemical Formula 2: (Cp1Ra)n(Cp2Rb)M1Q13-n  [Chemical Formula 1] wherein all the variables are described herein.

公开(公告)号：US20220162353A1

公开(公告)日：2022-05-26

申请号：US17601281

申请日：2020-09-29

申请人： LG Chem, Ltd.

发明人： Hyun Jee Kwon ,  Seungmi Lee ,  Jung Won Lee ,  Poeun Kim ,  Yongwoo Kwon ,  Ki Soo Lee

IPC分类号： C08F4/6592 ,  C08F210/02

摘要： The present disclosure provides a hybrid supported metallocene catalyst useful for preparing a polyethylene copolymer capable of producing an mLLDPE shrink film having excellent shrinkage and processability with excellent mechanical properties, and a process for preparing a polyethylene copolymer using the same. The hybrid supported metallocene catalyst comprises at least one first metallocene compound selected from compounds represented by the following Chemical Formula 1 and at least one second metallocene compound selected from compounds represented by the following Chemical Formula 2: wherein the variables are described herein.