公开(公告)号：US20210310140A1

公开(公告)日：2021-10-07

申请号：US17267572

申请日：2019-07-18

Applicant: Toho Titanium Co., Ltd.

Inventor： Matsuhide Horikawa ,  Daisuke Suzuki ,  Haruka Yamamoto ,  Hideki Fujii

IPC: C25C3/28 ,  C25C7/08 ,  C25C7/02

Abstract: A method for producing metal titanium by carrying out electrolysis using an anode and a cathode in a molten salt bath, the method using an anode containing metal titanium as the anode, the method comprising a titanium deposition step of depositing metal titanium on the cathode, wherein, in the titanium deposition step, a temperature of the molten salt bath is from 250° C. or more and 600° C. or less, and an average current density of the cathode in a period from the start to 30 minutes later of the titanium deposition step is maintained in a range of 0.01 A/cm2 to 0.09 A/cm2.

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：US20190233569A1

公开(公告)日：2019-08-01

申请号：US16338517

申请日：2017-10-03

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Hidetoshi Umebayashi

IPC: C08F297/08

CPC classification number: C08F297/083 ,  C08F4/654 ,  C08F10/06

Abstract: A solid catalyst component for polymerization of olefins is disclosed which can produce a polymer having low stickiness (tackiness) of polymer particles, excellent flowability, and favorable particle size distribution. The solid catalyst component for polymerization of olefins includes titanium, magnesium, a halogen atom and an internal electron donor, wherein the solid catalyst component has a multimodal pore volume distribution measured by a mercury intrusion method and has one or more peak tops in each of a pore radius range from 0.002 μm to 1 μm and a pore radius range from larger than 1 μm to 30 μm or smaller, and a ratio represented by pore volume V1 derived from pores in the radius range from 0.002 μm to 1 μm/pore volume V2 derived from pores in the radius range from larger than 1 μm to 30 μm or smaller is 0.30 to 0.65.

公开(公告)号：US10364304B2

公开(公告)日：2019-07-30

申请号：US14240588

申请日：2012-08-03

Applicant: Toshiya Uozumi ,  Shingo Yamada

Inventor： Toshiya Uozumi ,  Shingo Yamada

IPC: C08F4/64 ,  C08F110/06

Abstract: A method for producing a solid catalyst component for olefin polymerization includes bringing a magnesium compound, a tetravalent titanium halide compound, and an electron donor compound represented by a general formula (1) into contact with each other, reacting the mixture, washing the resulting reaction product to obtain a solid component, bringing the solid component, a tetravalent titanium halide compound, and an electron donor compound represented by a general formula (2) into contact with each other, reacting the mixture, and washing the resulting reaction product. (R1)kC6H4-k(COOR2)(COOR3)  (1) R4R5C(COOR6)2  (2) A polymer that exhibits high activity with respect to hydrogen, high stereoregularity, and high bulk density can be obtained using a catalyst including a solid catalyst component obtained by the method.

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.

公开(公告)号：US10156277B2

公开(公告)日：2018-12-18

申请号：US15578806

申请日：2016-04-28

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Mamoru Nakashima ,  Hideki Sakai ,  Daisuke Taki

IPC: F16D69/02 ,  C01G23/00 ,  C09K3/14 ,  F16D13/64 ,  F16D65/092

Abstract: Provided is an alkali-metal titanate in which the content and adhesivity of the fibrous potassium titanate is significantly reduced.The alkali-metal titanate includes 0.5 mol to 2.2 mol of potassium oxide in terms of potassium atoms, 0.05 mol to 1.4 mol of sodium oxide in terms of sodium atoms, and 0 mol to 1.4 mol of lithium oxide in terms of lithium atoms relative to 1 mol of alkali-metal hexatitanate, in which a total content of potassium oxide in terms of potassium atoms, sodium oxide in terms of sodium atoms, and lithium oxide in terms of lithium atoms relative to 1 mol of alkali-metal hexatitanate is 1.8 mol to 2.3 mol; and the alkali-metal titanate has a single phase conversion ratio of 85% to 100%, a fiber ratio of 0% by volume to 10% by volume, and a moisture content of 0% by mass to 1.0% by mass.

公开(公告)号：US20180187815A1

公开(公告)日：2018-07-05

申请号：US15740320

申请日：2016-02-16

Applicant: TOHO TITANIUM CO., LTD.

Inventor： Minoru YOSHIDA

IPC: F16L53/38 ,  C22B34/12 ,  C22B5/04

CPC classification number: F16L53/38 ,  B01J2219/0013 ,  B01J2219/00452 ,  C22B5/04 ,  C22B34/12 ,  C22B34/1272

Abstract: A connection pipe for coupling at least one reaction vessel used in producing titanium sponge with at least one recovering vessel for condensing and recovering magnesium and magnesium chloride separated from the titanium sponge in the reaction vessel; wherein the connection pipe is configured as a dual wall structure constituted of an inner pipe and an outer pipe, and comprises at least one heating unit provided between the inner pipe and the outer pipe, two or more sets of lead terminals located through the outer pipe to provide electrical connection to a power terminal in the outside of the connection pipe, insulators for sealing the lead terminals, lead wires for electrically coupling the heating unit with the lead terminals, and a stress absorbed portion provided on the outer pipe; wherein the stress absorbed portion is provided between the lead terminals thereby preventing short circuit and meltdown of the lead wires.

公开(公告)号：US09969004B2

公开(公告)日：2018-05-15

申请号：US14361305

申请日：2011-12-16

Applicant: Osamu Kanou ,  Satoshi Sugawara ,  Hideo Takatori

Inventor： Osamu Kanou ,  Satoshi Sugawara ,  Hideo Takatori

IPC: C22C14/00 ,  B22F3/20 ,  C22F1/18 ,  C22C1/04 ,  B22F1/00 ,  B22F3/14 ,  B22F9/02 ,  B22F9/04 ,  C22F1/00 ,  B22F9/00

CPC classification number: B22F3/20 ,  B22F1/0003 ,  B22F3/14 ,  B22F9/023 ,  B22F9/04 ,  B22F2003/208 ,  B22F2009/001 ,  C22C1/0458 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18 ,  C22F1/183 ,  Y02P10/24

Abstract: Titanium alloy containing iron, that is, iron-containing titanium alloy having high strength and hardness in which iron in a composition which cannot be realized in a conventional method, is contained with no segregation, and is provided in lower cost. The α+β titanium alloy or β titanium alloy is produced by a forming process such as hot extrusion of titanium alloy powder containing 3 to 15 mass % of iron powder. The method for production of the α+β titanium alloy or β titanium alloy includes a step of mixing 3 to 15 mass % of iron powder and titanium alloy powder as the remainder, and a step of performing a forming process of hot extrusion on this powder mixture.