公开(公告)号：US20250101142A1

公开(公告)日：2025-03-27

申请号：US18832292

申请日：2023-02-27

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Takaharu Sakemi ,  Hiroyuki Kono ,  Hayashi Ogawa ,  Toshiya Uozumi

IPC: C08F4/654 ,  C08F4/14 ,  C08F4/649 ,  C08F110/06

Abstract: A solid catalyst component for polymerization of an olefin is disclosed including: magnesium, titanium, halogen, and a succinic acid diester compound, wherein a content of the succinic acid diester compound in a total content of the components in terms of the solid content is 15.0% by mass or more, a ratio (S/T), represented by a content of the succinic acid diester compound(S) in the total content of the components to a content of the titanium (T) in the total content of the components, is 0.60 to 1.30 in a molar ratio, and a total pore volume of a diameter of 1 μm or less as measured by a mercury intrusion method is 0.3 to 1.0 cm3/g, and a specific surface area is 200 m2/g or more.

公开(公告)号：US20180265612A1

公开(公告)日：2018-09-20

申请号：US15542149

申请日：2016-01-18

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Toshiya Uozumi ,  Shingo Yamada ,  Toshihiko Sugano

IPC: C08F110/06

CPC classification number: C08F110/06 ,  C08F4/658 ,  C08F10/00 ,  C08F2410/01 ,  C08F4/651 ,  C08F4/6565 ,  C08F2500/12 ,  C08F2500/18

Abstract: A solid catalyst component for olefin polymerization is produced by bringing a vinylsilane compound (d) into contact with a catalyst component, the catalyst component being a powdery solid component obtained by bringing a magnesium compound (a), a titanium halide compound (b), and an electron donor compound (c) into contact with each other, the electron donor compound (c) being one or more compounds that do not include a phthalic ester structure, and include one or more groups selected from an ester group, a carbonate group, and an ether group, the vinylsilane compound (d) being brought into contact with the catalyst component in a 0.1 to 15-fold molar quantity with respect to the molar quantity (on a titanium atom basis) of the titanium halide compound (b) included in the catalyst component.

公开(公告)号：US11008408B2

公开(公告)日：2021-05-18

申请号：US16088158

申请日：2017-03-23

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Shingo Yamada ,  Toshiya Uozumi

IPC: C07C29/70 ,  C07C31/30 ,  C08F4/52 ,  C08F10/06 ,  C07F3/02 ,  C08F4/642

Abstract: There is provided a novel alkoxymagnesium which, when used as a constituent of a solid catalyst component for olefin polymerization to polymerize an olefin, may reduce the formation rate of a fine powder and may form a polymer having an excellent particle size distribution under high polymerization activity. The alkoxymagnesium is characterized by comprising secondary particles each of which is an aggregate of primary particles having an average particle diameter of less than 1 μm and by having a ratio represented by the average particle diameter of the primary particles/the average particle diameter of the secondary particles of 0.1 or less, a total pore volume of 0.5 to 1 cm3/g, a specific surface area of less than 50 m2/g, and a particle size distribution index (SPAN) 1 or less.

公开(公告)号：US20190023820A1

公开(公告)日：2019-01-24

申请号：US15773278

申请日：2016-10-28

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Takahiro Masuyama ,  Shinta Marui ,  Toshiya Uozumi

IPC: C08F110/06

Abstract: It is intended to provide a method for producing a catalyst for olefin polymerization which exhibits excellent catalytic activity in a polymerization treatment and permits production of a polymer excellent in stereoregularity, melt flowability, etc., even when the polymerization catalyst is prepared in an inert gas atmosphere by using a solid catalytic component comprising an electron-donating compound other than a phthalic acid ester. The method for producing a catalyst for olefin polymerization comprises performing a pre-contact treatment of bringing a solid catalytic component (A) comprising a magnesium atom, a titanium atom, a halogen atom and an electron-donating compound having no phthalic acid ester structure, a specific organoaluminum compound (B) and an external electron-donating compound (C) into contact with each other at a temperature of lower than 15° C. for a time of 30 minutes or shorter in the absence of the olefin.

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.

公开(公告)号：US20230174684A1

公开(公告)日：2023-06-08

申请号：US17921666

申请日：2021-03-15

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Emiko Wada

IPC: C08F4/654 ,  C08F10/06

CPC classification number: C08F4/654 ,  C08F10/06

Abstract: Provided is a solid catalyst component for polymerization of an olefin which is capable of realizing stereoregularity and wide molecular weight distribution of the resulting polymer, copolymerization activity, and block ratio of the resulting copolymer in a well-balanced manner while satisfying these properties at a level sufficient for practical use despite containing an electron-donating compound other than a phthalic acid ester. The present invention provides a solid catalyst component for polymerization of an olefin, comprising: magnesium, titanium, halogen, an ether carbonate compound (A), and a succinic acid diester compound (B), wherein a molar ratio represented by the following expression is 0.01 to 1.00: content of the ether carbonate compound (A)/content of the succinic acid diester compound (B).

公开(公告)号：US10472436B2

公开(公告)日：2019-11-12

申请号：US15542149

申请日：2016-01-18

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Toshiya Uozumi ,  Shingo Yamada ,  Toshihiko Sugano

IPC: C08F110/06 ,  C08F4/658 ,  C08F10/00

Abstract: A solid catalyst component for olefin polymerization exhibits excellent catalytic activity during polymerization, and can produce a polymer that exhibits excellent stereoregularity, bulk density, and the like even when a polymerization catalyst is produced in an inert atmosphere using an electron donor compound other than a phthalic ester and an organosilicon compound. The solid catalyst component for olefin polymerization is produced by bringing a vinylsilane compound (d) into contact with a catalyst component, the catalyst component being a powdery solid component obtained by bringing a magnesium compound (a), a titanium halide compound (b), and an electron donor compound (c) into contact with each other, the electron donor compound (c) being one or more compounds that do not include a phthalic ester structure, and include one or more groups selected from an ester group, a carbonate group, and an ether group, the vinylsilane compound (d) being brought into contact with the catalyst component in a 0.1 to 15-fold molar quantity with respect to the molar quantity (on a titanium atom basis) of the titanium halide compound (b) included in the catalyst component.

公开(公告)号：US10392453B2

公开(公告)日：2019-08-27

申请号：US15542723

申请日：2016-01-18

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hiroyuki Kono ,  Toshiya Uozumi ,  Shingo Yamada ,  Toshihiko Sugano

IPC: C08F110/06 ,  C08F4/654 ,  C08F10/00

Abstract: A method for producing an olefin polymerization catalyst includes bringing a solid catalyst component for olefin polymerization, a vinylsilane compound, an organosilicon compound, and an organoaluminum compound into contact with each other in an inert organic solvent under an inert gas atmosphere in the absence of a specific vinyl compound, wherein a washing treatment is not performed after the vinylsilane compound has been added to the reaction system, the solid catalyst component includes a magnesium compound, a titanium halide compound, and an electron donor compound that does not include a phthalic acid ester structure, and includes a diol skeleton, and the organosilicon compound does not include a vinyl group, and includes at least one group selected from an alkoxy group and an amino group.