公开(公告)号：US20250101153A1

公开(公告)日：2025-03-27

申请号：US18832591

申请日：2022-10-17

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Keisuke Goto ,  Toshiya Uozumi ,  Hiroyuki Kono ,  Shinta Marui ,  Chika Yoshizaki

IPC: C08F110/06

Abstract: A solid catalyst component for olefin polymerization containing magnesium, titanium, a halogen, a carbonate compound (A) represented by the following general formula (1): R1—O—C(═O)—O—Z—O—R2 (1), and an ether compound (B) having two or more ether groups, wherein a proportion of the ether compound (B) in a total of the carbonate compound (A) and the ether compound (B) is 33.0 to 80.0 mol %. The invention can provide a solid catalyst component for olefin polymerization using an ether compound having two or more ether groups and a carbonate compound as internal electron donating compounds, wherein the solid catalyst component for olefin polymerization has, in the polymerization of olefins, a moderately wide molecular weight distribution of an olefin polymer obtained therefrom and can increase the polymerization activity.

公开(公告)号：US20230220143A1

公开(公告)日：2023-07-13

申请号：US17927447

申请日：2021-03-15

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Takaharu Sakemi ,  Toshiya Uozumi ,  Keisuke Goto

IPC: C08F299/02 ,  C08F4/52 ,  C08F2/06

CPC classification number: C08F299/022 ,  C08F4/52 ,  C08F2/06 ,  C08F2810/20 ,  C08F2810/40

Abstract: The present invention provides a method for producing a catalyst for polymerization of an olefin, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst for polymerization of an olefin includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups.

公开(公告)号：US20230220126A1

公开(公告)日：2023-07-13

申请号：US17927428

申请日：2021-03-15

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Takaharu Sakemi ,  Toshiya Uozumi ,  Keisuke Goto

IPC: C08F4/654

CPC classification number: C08F4/654

Abstract: A method is disclosed for producing a catalyst, which suppresses a decrease in polymerization activity due to early deactivation of the active site after the catalyst has been formed, exhibits excellent catalyst activity at the time of polymerization of olefins, and can produce polymers of olefins, which are excellent in stereoregularity. The method for producing a catalyst includes contacting a solid catalyst component (A) containing magnesium, titanium, halogen and an internal electron-donating compound, and a specific organoaluminum compound (B) represented by the general formula (I), with each other, wherein at least one selected from the solid catalyst component (A) and the organoaluminum compound (B) is previously subjected to contact treatment with a hydrocarbon compound having one or more vinyl groups, in an organic solvent containing 30% by mass or more of one or more compounds selected from saturated aliphatic hydrocarbon compounds having 20 or more carbon atoms.