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：US20220372052A1

公开(公告)日：2022-11-24

申请号：US17715343

申请日：2022-04-07

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Tsutomu Uzawa ,  Toshiya Uozumi

IPC: C07F7/28 ,  C08F210/06

Abstract: Provided is a solid catalyst component for olefin polymerization which is capable of exerting favorable ethylene responsiveness while forming a propylene homopolymer having high stereoregularity, when subjected to ethylene-propylene copolymerization reaction. The present invention provides a solid catalyst component for olefin polymerization, comprising titanium, magnesium, halogen, and an internal electron-donating compound, wherein the internal electron-donating compound comprises an electron-donating compound (i) having a phthalic acid ester structure, and an electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure, wherein a content ratio of the electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure is 0.5 to 1.5% by mass.

公开(公告)号：US20220017664A1

公开(公告)日：2022-01-20

申请号：US16931971

申请日：2020-07-17

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Teppei Ishikawa

IPC: C08F110/06

Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers. A solid catalyst component for polymerization of an olefin is obtained by: (i) bringing compounds selected from particular phthalic acid ester compounds (A), a magnesium compound and a halogen-containing titanium compound into contact; (ii) bringing the first contact product obtained in step (i) and compounds selected from particular diether compounds (B) into contact, and washing the second contact product; and (iii) obtaining a contact product between the washed second contact product and a halogen-containing titanium compound, washing the contact product, and bringing it into contact with particular phthalic acid ester compounds (A) and a halogen-containing titanium compound.

公开(公告)号：US11225536B1

公开(公告)日：2022-01-18

申请号：US16931971

申请日：2020-07-17

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshiya Uozumi ,  Teppei Ishikawa

IPC: C08F110/06

Abstract: A solid catalyst component for polymerization of an olefin having a polymerization activity equivalent to or higher than a solid catalyst component having a phthalic acid ester compound or diether compound as an internal electron-donating compound, and can produce an olefin polymer having excellent bulk density and low content of olefin oligomers. A solid catalyst component for polymerization of an olefin is obtained by: (i) bringing compounds selected from particular phthalic acid ester compounds (A), a magnesium compound and a halogen-containing titanium compound into contact; (ii) bringing the first contact product obtained in step (i) and compounds selected from particular diether compounds (B) into contact, and washing the second contact product; and (iii) obtaining a contact product between the washed second contact product and a halogen-containing titanium compound, washing the contact product, and bringing it into contact with particular phthalic acid ester compounds (A) and a halogen-containing titanium compound.

公开(公告)号：US12060378B2

公开(公告)日：2024-08-13

申请号：US17715343

申请日：2022-04-07

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Tsutomu Uzawa ,  Toshiya Uozumi

IPC: C08F110/06 ,  C07F7/28 ,  C08F4/649 ,  C08F4/653 ,  C08F4/654 ,  C08F210/06

CPC classification number: C07F7/28 ,  C08F4/6494 ,  C08F4/653 ,  C08F4/654 ,  C08F110/06 ,  C08F210/06

Abstract: Provided is a solid catalyst component for olefin polymerization which is capable of exerting favorable ethylene responsiveness while forming a propylene homopolymer having high stereoregularity, when subjected to ethylene-propylene copolymerization reaction. The present invention provides a solid catalyst component for olefin polymerization, comprising titanium, magnesium, halogen, and an internal electron-donating compound, wherein the internal electron-donating compound comprises an electron-donating compound (i) having a phthalic acid ester structure, and an electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure, wherein a content ratio of the electron-donating compound (ii) having two or more kinds of groups selected from an ether group, an ester group and a carbonate group and having no phthalic acid ester structure is 0.5 to 1.5% by mass.

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：US10457755B2

公开(公告)日：2019-10-29

申请号：US15109611

申请日：2014-08-04

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Toshihiko Sugano ,  Toshiya Uozumi ,  Motoki Hosaka

IPC: C08F4/649 ,  C08F297/08 ,  C08F110/06

Abstract: High stereoregularity, highly active catalytic performance, and good hydrogen response can be obtained by homopolymerizing propylene in the presence of a catalyst that includes a solid catalyst component including titanium, magnesium, a halogen, a carbonate compound represented by the following formula, and a diether compound. Excellent polymerization behavior can also be obtained when effecting random copolymerization or block copolymerization. R1—O—C(═O)—O—Z—O—R2  (1) wherein R1 and R2 are a hydrocarbon group or a substituted hydrocarbon group having 1 to 24 carbon atoms, or a heteroatom-containing group, provided that R1 and R2 are either identical or different, and Z is a linking group that links two oxygen atoms through a carbon atom or a carbon chain.

公开(公告)号：US20190112408A1

公开(公告)日：2019-04-18

申请号：US16213349

申请日：2018-12-07

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Masafumi Imai ,  Toshihiko Sugano ,  Toshiya Uozumi ,  Yuta Haga

IPC: C08F297/08 ,  C08F210/06 ,  C08F4/654 ,  C08F297/06

Abstract: A method for producing a propylene-based block copolymer produces a propylene-based copolymer that exhibits excellent stereoregularity, rigidity, and impact resistance in a convenient and efficient manner while achieving high polymerization activity. The method for producing a propylene-based block copolymer includes bringing a catalyst into contact with propylene, or propylene and an α-olefin, and bringing an electron donor compound into contact with the resulting product to produce a propylene-based block copolymer, the catalyst including a solid catalyst component that includes titanium, magnesium, a halogen, and an internal electron donor compound, a specific organoaluminum compound, and a specific external electron donor compound.

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.