公开(公告)号：US09738993B2

公开(公告)日：2017-08-22

申请号：US15116776

申请日：2015-02-03

Applicant: Denka Company Limited

Inventor： Hitoshi Kaneko ,  Toru Arai ,  Masaya Umeyama ,  Yoko Tamura ,  Ayumu Tsukamoto

IPC: D01F9/127 ,  H01B1/04 ,  B01J35/00 ,  B01J35/10 ,  B01J21/10 ,  B01J23/75 ,  B82Y30/00 ,  B82Y40/00

CPC classification number: D01F9/1278 ,  B01J21/10 ,  B01J23/75 ,  B01J35/0006 ,  B01J35/1009 ,  B82Y30/00 ,  B82Y40/00 ,  H01B1/04 ,  Y10S977/762 ,  Y10S977/896 ,  Y10S977/932

Abstract: A manufacturing method of carbon nanofibers at a high activity is provided. Further, carbon nanofibers produced by the manufacturing method and being excellent in electric conductivity, crystallinity and dispersibility is provided.By a manufacturing method of carbon nanofibers in which an active species including cobalt as a chief component is employed as a catalyst and carbon monoxide is used as a carbon source, wherein said catalyst has 3 to 150 mass % of said active species carried on a carrier composed of a magnesium-containing oxide having a specific surface area of 0.01 to 5 m2/g, and a reaction temperature, partial pressure of carbon monoxide and a flow rate of raw material gas is controlled, CNFs that are excellent in electric conductivity, crystallinity and dispersibility can be manufactured at high activity, so that carbon nanofibers that is excellent in electric conductivity, crystallinity and dispersibility is obtained.

公开(公告)号：US12188159B2

公开(公告)日：2025-01-07

申请号：US17455547

申请日：2021-11-18

Applicant: DENKA COMPANY LIMITED

Inventor： Toru Arai ,  Hitoshi Kaneko

IPC: H01B1/00 ,  B01J21/06 ,  B01J21/18 ,  B01J23/02 ,  B01J23/75 ,  B01J23/755 ,  C08K3/04 ,  C08L101/00 ,  C09D5/24 ,  C09D7/40 ,  C09D11/037 ,  C09D11/52 ,  C09D201/00 ,  D01F9/12 ,  D01F9/127 ,  D01F9/32 ,  H01B1/22 ,  H01B1/24 ,  H01M4/13 ,  H01M4/62

Abstract: A method for a carbon nanofiber composite, which can obtain a carbon nanofiber composite with high productivity and high activity, and which does not require removal of fluidizing materials or dispersing materials, provides a carbon nanofiber composite having improved dispersibility. The method for producing the carbon nanofiber composite includes bringing at least one catalyst and at least one particulate carbon material into contact with at least one gas containing at least one gaseous carbon-containing compound while mechanically stirring the catalyst and the particulate carbon material in a reactor. The carbon nanofiber composite includes carbon nanofibers and at least one particulate carbon material, wherein the particulate carbon material has 70% by volume or more of particles with a particle diameter of 1 μm or less, and/or a median diameter D50 by volume of 1 μm or less.

公开(公告)号：US12104047B2

公开(公告)日：2024-10-01

申请号：US17782000

申请日：2020-12-01

Applicant: DENKA COMPANY LIMITED

Inventor： Toru Arai ,  Shota Yamamoto ,  Hiroaki Nishimura ,  Azusa Yagi

IPC: C08L23/08 ,  B32B7/12 ,  B32B15/082 ,  B32B15/085 ,  B32B15/20 ,  B32B17/10 ,  B32B27/08 ,  B32B27/32 ,  C08F210/02 ,  C08F212/08 ,  C08F212/36 ,  C08K5/14 ,  C08L25/08

CPC classification number: C08L23/0838 ,  B32B7/12 ,  B32B15/082 ,  B32B15/085 ,  B32B15/20 ,  B32B17/10 ,  B32B27/08 ,  B32B27/322 ,  C08F210/02 ,  C08F212/08 ,  C08F212/36 ,  C08K5/14 ,  C08L25/08 ,  B32B2307/204 ,  B32B2307/206 ,  B32B2307/54 ,  B32B2307/732 ,  B32B2307/748 ,  B32B2311/12 ,  B32B2323/04 ,  B32B2325/00

Abstract: A curable composition includes an olefin-aromatic vinyl compound-aromatic polyene copolymer satisfying conditions (1) to (4) and an additive resin, which is at least one of a hydrocarbon-based elastomer, polyphenylene ether, olefin-aromatic vinyl compound-aromatic polyene copolymerized oligomer, and aromatic polyene-based resin. (1) The number average molecular weight of the copolymer is 5000 to 100000. (2) The aromatic vinyl compound monomer has 8 to 20 carbon atoms, and the content of the unit of the monomer is 0 to 70 mass %. (3) The aromatic polyene is selected from polyenes having 5 to 20 carbon atoms and a plurality of vinyl and/or vinylene groups in the molecule, and the content of the groups is 1.5 to 20 pieces per number average molecular weight. (4) The olefin is selected from olefins having 2 to 20 carbon atoms, and the total monomer units of the olefin, aromatic vinyl compound, and aromatic polyene is 100 mass %.

公开(公告)号：US11978357B2

公开(公告)日：2024-05-07

申请号：US16626263

申请日：2018-06-28

Applicant: Denka Company Limited ,  Tohoku University

Inventor： Akira Miyama ,  Toru Arai ,  Takashi Sasaki ,  Takeshi Kanno ,  Yularo Arata ,  Atsushi Masamune

IPC: G09B23/28 ,  G09B9/00 ,  G09B23/30

CPC classification number: G09B23/285 ,  G09B9/00 ,  G09B23/30

Abstract: Disclosed is an ulcer model used to practice a procedure including hemorrhage arrest, the ulcer model including a model main body which includes upper and lower surfaces facing each other and a tubular simulated blood vessel path provided between the upper surface and the lower surface and having an inlet opening and an outlet opening. The upper surface includes a ring-shaped raised surface that rises in a thickness direction of the model main body and a simulated ulcer surface that is a recessed bottom surface surrounded by the raised surface. The simulated blood vessel path extends from a part other than the upper surface of the surfaces of the model main body to the simulated ulcer surface or an area in the vicinity of the inside thereof.

公开(公告)号：US10125207B2

公开(公告)日：2018-11-13

申请号：US15301247

申请日：2015-04-01

Applicant: Denka Company Limited

Inventor： Toru Arai ,  Tometomo Uchida ,  Ayumu Tsukamoto

IPC: C08F255/02 ,  C08F210/16 ,  C08F4/6592 ,  C08F297/02 ,  C08L25/06 ,  C08F4/659 ,  C08L53/00

Abstract: The present invention addresses the problem of providing a cross-copolymer having excellent flexibility, heat resistance, cold resistance and mechanical properties. The present invention also addresses the problem of providing a resin composition which is prepared using the cross-copolymer, has excellent compatibility with polyolefin resins and aromatic resins, and has excellent flexibility, heat resistance and cold resistance.The problem can be solved by a cross-copolymer produced by a polymerization process comprising a coordination polymerization step and a crossing step, wherein the coordination polymerization step comprises copolymerizing an ethylene monomer, a specific olefin monomer and an aromatic polyene together using a single site coordination polymerization catalyst to synthesize an ethylene-olefin-aromatic polyene copolymer that meets a specific requirement, and the crossing step comprises carrying out a polymerization in the co-presence of the ethylene-olefin-aromatic polyene copolymer and an aromatic vinyl compound monomer using an anionic polymerization initiator or a radical polymerization initiator.

公开(公告)号：US20180244912A1

公开(公告)日：2018-08-30

申请号：US15753020

申请日：2016-08-17

Applicant: DENKA COMPANY LIMITED

Inventor： Akira Miyama ,  Yoshihiko TSUJIMURA ,  Toru Arai

IPC: C08L53/00 ,  G09B23/30

CPC classification number: C08L53/005 ,  C08L53/025 ,  C08L91/00 ,  C08L2203/02 ,  C08L2205/16 ,  C08L2207/322 ,  G09B23/30 ,  C08L23/12 ,  C08L51/06 ,  C08K7/02 ,  C08K2003/265

Abstract: [Problem] To provide a thermoplastic resin composition for use in an organ model, wherein said composition has a softness closer to that of an organ, a high mechanical strength, and a texture close to an organ, exhibits excellent durability, and can be handled easily. [Solution] A resin composition for an organ model, said composition containing, as component (A), 100 parts by mass of a hydrogenated block copolymer having an MFR (measured at a temperature of 230° C. and a load of 2.16 kg) of 1 g/10 min. or less, and an oil as component (B). Moreover, the composition may also contain a cross copolymer as component (C), a polypropylene resin as component (D), and a filler as component (E).

公开(公告)号：US11472955B2

公开(公告)日：2022-10-18

申请号：US16486928

申请日：2018-02-20

Applicant: Denka Company Limited

Inventor： Takashi Sasaki ,  Akira Miyama ,  Toru Arai

IPC: C08L53/00 ,  G09B23/30

Abstract: [Problem] To provide a softer resin material that can be highly filled with an oil and that has almost no seepage (bleed-out) of oil. Additionally, to provide a biological model that is easy to handle and that has a softness and mechanical properties closer to those of organs and a texture close to that of organs. [Solution] A resin composition containing 100 parts by mass of component (A), a hydrogenated block copolymer having an MFR (measured at a temperature of 230° C. and with a load of 2.16 kg) of 1 g/10 min or less; more than 1000 parts by mass and at most 2000 parts by mass of component (B), an oil; and at least 10 parts by mass and at most 120 parts by mass of component (C), a polyolefin resin having a specific surface area of 0.01 to 30 m2/g.

公开(公告)号：US20180273669A1

公开(公告)日：2018-09-27

申请号：US15763428

申请日：2016-09-12

Applicant: Denka Company Limited

Inventor： Toru Arai

IPC: C08F297/02

Abstract: An object of the present invention is to provide a cross-copolymer having excellent softness and heat resistance which is useful as a thermoplastic elastomer, and provide a method for producing thereof.The present invention provides a method for producing a cross-copolymer comprising a coordination polymerization step and an anionic polymerization step, the cross-copolymer has a specific structure. The present invention also provides a cross-copolymer having excellent moldability, softness and heat resistance, which can be produced under the producing conditions satisfying that the molecular weight distribution of the copolymer obtained in the coordination polymerization step is in a specific range.

公开(公告)号：US20170365372A1

公开(公告)日：2017-12-21

申请号：US15501800

申请日：2015-08-06

Applicant: Denka Company Limited

Inventor： Hitoshi Kaneko ,  Toru Arai ,  Yoko Horikoshi ,  Ayumu Tsukamoto ,  Akira Miyama

IPC: H01B1/24 ,  D01F9/127 ,  C08L101/00 ,  C08L55/02 ,  C08L33/10 ,  C08L29/04 ,  C08L25/06 ,  H01B1/00 ,  C08K3/04

CPC classification number: H01B1/24 ,  C08K3/041 ,  C08K3/046 ,  C08K7/06 ,  C08K2201/005 ,  C08L29/04 ,  C08L33/10 ,  C08L101/00 ,  D01F9/127 ,  D01F9/1278

Abstract: By using CNF excellent in dispersibility, conductivity, and crystallinity, a conductive polymer material having high conductivity even with a low CNF content and a shaped article thereof and a conductive polymer material with a less CNF content for same conductivity and a shaped article thereof are provided. A conductive polymer material with high conductivity is produced by using carbon nanofiber with a median diameter D50 value from 0.1 to 8 μm, powder resistivity of 0.03 Ωcm or less measured under a load of 9.8 MPa, and D/G from 0.5 to 1.3.