Patents Assigned to Sumitomo Chemical Co., Ltd.
  • Publication number: 20210017321
    Abstract: A method for producing conjugated diene rubber is provided, including: a first step of obtaining a conjugated diene polymer chain having an active end by polymerizing a monomer comprising a conjugated diene compound and a vinyl compound having a functional group interactive with silica using a polymerization initiator in an inert solvent; a second step of reacting a siloxane compound with the active end of the conjugated diene polymer chain having the active end; and a third step of reacting a hydrocarbyloxysilane compound with the conjugated diene polymer chain with which the siloxane compound has been reacted that is obtained in the second step.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 21, 2021
    Applicants: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
    Inventors: Takuro SAKURAI, Takashi IIZUKA, Mana FUJII, Hisakatsu HAMA
  • Patent number: 10825992
    Abstract: Novel spirobifluorene compounds for light emitting devices where the spirobifluorene ring system comprises at least one acridine-type substituent.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: November 3, 2020
    Assignee: SUMITOMO CHEMICAL CO., LTD
    Inventors: Dominique Bascour, Jonathan Maunoury, Enrico Orselli
  • Publication number: 20200283556
    Abstract: A modified conjugated diene rubber having a modifying structure derived from a siloxane compound at at least one terminal of a polymer chain containing conjugated diene monomer unit and a monomer unit of a vinyl compound having a functional group interactive with silica.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 10, 2020
    Applicants: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
    Inventors: Takuro SAKURAI, Takashi IIZUKA, Mana FUJII, Hisakatsu HAMA
  • Publication number: 20200262961
    Abstract: A conjugated diene-based rubber including a polymer block (A) containing isoprene monomer unit as the main component and a polymer block (B) containing 1,3-butadiene monomer unit as the main component, wherein at least one of the polymer block (A) and the polymer block (B) contains a unit of a vinyl compound having a functional group interactive with silica, the polymer block (A) has a weight average molecular weight (Mw) in the range of 1,000 to 30,000, and the entire conjugated diene-based rubber has a weight average molecular weight (Mw) in the range of 50,000 to 5,000,000.
    Type: Application
    Filed: September 28, 2018
    Publication date: August 20, 2020
    Applicants: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
    Inventors: Takuro SAKURAI, Takashi IIZUKA, Mana FUJII, Hisakatsu HAMA
  • Publication number: 20200044248
    Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 6, 2020
    Applicant: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Masahiko TAMURA, Takeshi KAWASATO, Satoshi ASAKURA
  • Patent number: 10532374
    Abstract: A thin film production method according to one embodiment includes: a coating film forming step of forming a coating film by discharging a coating liquid on a support from first to M-th line heads (M is 2 or larger and N or smaller) while allowing the support to pass through N line heads once; and a drying step of obtaining a thin film by drying the coating film. A thin film forming nozzle hole 28 of the m-th line head (m is 2 or larger and M or smaller) is arranged to be positioned between adjacent thin film forming nozzle holes in an (m?1)-th thin film forming nozzle hole array Qm-1. Every time the first line head discharges the coating liquid, the m-th line head applies the coating liquid onto the support at a predetermined delay time with respect to a discharge time of the first line head. The first to M-th line heads discharge the coating liquid from the film forming nozzle hole selected in accordance with a shape of a thin film formation region onto the support.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: January 14, 2020
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Motoo Noda, Hidekazu Shiomi, Akihide Suzuki
  • Patent number: 10483536
    Abstract: There is provided a production method of a lithium-containing composite oxide capable of improving performances of cycle characteristics, rate characteristics, and the like of a lithium ion secondary battery. A production method of a lithium-containing composite oxide is characterized in that when producing a lithium-containing composite oxide by mixing a transition metal hydroxide containing Ni and Mn essentially and a lithium source and heating the mixture, a transition metal hydroxide having a crystallite diameter of the (100) plane being 35 nm or less in a crystal structure model in the space group P-3m1 of an X-ray diffraction pattern is used.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Masahiko Tamura, Takeshi Kawasato, Satoshi Asakura
  • Publication number: 20190296350
    Abstract: To provide a lithium-containing composite oxide capable of obtaining a lithium ion secondary battery having a large discharge capacity wherein the deterioration of the discharge voltage due to repetition of a charge and discharge cycle is suppressed, a cathode active material, a positive electrode for a lithium ion secondary battery and a lithium ion secondary battery. A lithium-containing composite oxide, which is represented by the formula I: LiaiNibCOcMndMeO2??Formula I, wherein M is at least one member selected from the group consisting of Na, Mg, Ti, Zr, Al, W and Mo, a+b+c+d+e=2, 1.1?a/(b+c+d+e)?1.4, 0.2?b/(b+c+d+e)?0.5, 0?c/(b+c+d+e)?0.25, 0.3?d/(b+c+d+e)?0.6, and 0?e/(b+c+d+e)?0.1, and wherein the valence of Ni is from 2.15 to 2.45.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 26, 2019
    Applicant: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Ryo EGUCHI, Takeshi KAWASATO
  • Patent number: 10424777
    Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 24, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Satoshi Takamatsu, Yukimitsu Wakasugi, Megumi Uchida
  • Publication number: 20190256691
    Abstract: The conjugated diene-based polymer of the invention comprises an aromatic vinyl unit based on an aromatic vinyl compound and a conjugated diene unit based on a conjugated diene compound, is modified with a compound containing a heteroatom, and has an SP value of 16.80 MPa1/2 to 17.10 MPa12.
    Type: Application
    Filed: February 14, 2019
    Publication date: August 22, 2019
    Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.
    Inventors: Jesus Rodriguez CASTANON, Toshiro MATSUO, Masako IMAI, Yosuke MIYAZAKI
  • Publication number: 20190245202
    Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Applicant: SUMITOMO CHEMICAL CO., LTD
    Inventors: Takeshi KAWASATO, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki, Tegi Ri
  • Patent number: 10355276
    Abstract: To provide a lithium-containing composite oxide capable of obtaining a lithium ion secondary battery having a large discharge capacity wherein the deterioration of the discharge voltage due to repetition of a charge and discharge cycle is suppressed, a cathode active material, a positive electrode for a lithium ion secondary battery and a lithium ion secondary battery. A lithium-containing composite oxide, which is represented by the formula I: LiaiNibCocMndMeO2??Formula I, wherein M is at least one member selected from the group consisting of Na, Mg, Ti, Zr, Al, W and Mo, a+b+c+d+e=2, 1.1?a/(b+c+d+e)?1.4, 0.2?b/(b+c+d+e)?0.5, 0?c/(b+c+d+e)?0.25, 0.3?d/(b+c+d+e)?0.6, and 0?e/(b+c+d+e)?0.1, and wherein the valence of Ni is from 2.15 to 2.45.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 16, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Ryo Eguchi, Takeshi Kawasoto
  • Patent number: 10326127
    Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of elements in Groups 3 and 13 of the periodic table and lanthanoid elements, and a compound (II) containing Li and P, on the surface of a lithium-containing composite oxide comprising lithium and a transition metal element, wherein the atomic ratio of said P to said metal element (P/metal element) contained within 5 nm of the surface layer of the particles (III) is from 0.03 to 0.45.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: June 18, 2019
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Takeshi Kawasato, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki, Tegi Ri
  • Patent number: 10153489
    Abstract: A lithium-containing composite oxide essentially containing Li, Ni, Co and Mn, which has a crystal structure with space group R-3m, with a c-axis lattice constant being from 14.208 to 14.228 ?, and with an a-axis lattice constant and the c-axis lattice constant satisfying the relation of 3a+5.615?c?3a+5.655, and of which the integrated intensity ratio (I003/I104) of the (003) peak to the (104) peak in an XRD pattern is from 1.21 to 1.39.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: December 11, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Takeshi Kawasato, Masahiko Tamura, Ryo Eguchi
  • Patent number: 10135064
    Abstract: To provide a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charging is conducted at a high voltage. A cathode active material for a lithium ion secondary battery, which comprises particles (III) having a covering layer comprising a metal oxide (I) containing at least one metal element selected from the group consisting of Al, Y, Ga, In, La, Pr, Nd, Gd, Dy, Er and Yb, and a compound (II) containing Li and at least one non-metal element selected from the group consisting of S and B, on the surface of a lithium-containing composite oxide, wherein the atomic ratio (the non-metal element/the metal element) contained within 5 nm of the surface layer of the particles (III) is within a specific range.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: November 20, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Takeshi Kawasato, Kentaro Tsunozaki, Haisheng Zeng, Yasuyuki Takimoto, Toshio Suzuki
  • Patent number: 10122013
    Abstract: To provide a cathode active material having excellent cycle characteristics and a small decrease in the discharge voltage, and a process for its production. A process for producing a cathode active material, which comprises a step of mixing at least one sulfate (A) selected from the group consisting of a sulfate of Ni, a sulfate of Co and a sulfate of Mn with at least one carbonate (B) selected from the group consisting of sodium carbonate and potassium carbonate in an aqueous solution state to obtain a coprecipitated compound, a step of mixing the coprecipitated compound with an aqueous phosphate solution, a step of volatilizing a water content from the mixture of the coprecipitated compound and the aqueous phosphate solution to obtain a precursor compound, and a step of mixing the precursor compound with lithium carbonate and firing the mixture at from 500 to 1000° C.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: November 6, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Tomohiro Sakai, Kentaro Tsunozaki, Michinori Suehara
  • Patent number: 10074851
    Abstract: Surface modified lithium-containing composite oxide particles include base material particles of lithium-containing composite oxide, zirconium hydroxide or zirconium oxide, and at least one lithium salt selected from the group consisting of Li2ZrF6, Li2TiF6, Li3PO4, Li2SO4 and Li2SO4.H2O. The zirconium hydroxide or zirconium oxide, and the at least one lithium salt are attached to a surface of the base material particle. The lithium-containing composite oxide is represented by the formula: LipNxMyOzFa. N is at least one element selected from the group consisting of Co, Mn and Ni; M is at least one element selected from the group consisting of Al, elements of group 2, and transition metal elements other than N; 0.9<p<1.1; 0.85<x<1.0; 0<y<0.15; 1.9<z<2.1; x+y=1; and 0<a<0.05.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 11, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Tomoo Kato, Remi Hiraki
  • Patent number: 10062905
    Abstract: To provide a process for producing a cathode active material for a lithium ion secondary battery which can improve the initial charge and discharge efficiency (initial efficiency) and the cycle retention of a lithium ion secondary battery. A process for producing a cathode active material for a lithium ion secondary battery, which comprises a step (I) of bringing a lithium-containing composite oxide (I) containing Li element and a transition metal element into contact with a washing liquid and then separating it from the washing liquid to obtain a lithium-containing composite oxide (II), a step (II) of bringing the lithium-containing composite oxide (II) into contact with a composition (1) consisting of an aqueous solution containing an anion (A) preferably containing F and a composition (2) consisting of an aqueous solution containing a cation (M) preferably containing Al or Zr, and a step (III) of heating the lithium-containing composite oxide (II) after the step (II), in this order.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: August 28, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventor: Kentaro Tsunozaki
  • Patent number: 10038188
    Abstract: To provide a cathode active material with which a lithium ion secondary battery having favorable cycle characteristics and having a high energy density even when discharged at a high voltage can be obtained; a cathode comprising the cathode active material; and a lithium ion secondary battery having the cathode. A cathode active material comprising a composite oxide (A) containing Li and at least one transition metal element selected from the group consisting of Ni, Co and Mn, and the following particles (B) and the following fluorinated carbon material (C) present on the surface of the composite oxide (A): particles (B): particles containing an oxide of at least one metal element selected from the group consisting of Ti, Sn, Si, Al, Ce, Y, Zr, Co, W, V, Nb, Ta, La and Mg; and fluorinated carbon material (C): a fluorinated carbon material in the form of particles or fibers.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: July 31, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Widjaja Hardiyanto, Chikaya Tamitsuji, Naoki Yoshida, Sadatatsu Ikeda
  • Patent number: 9978946
    Abstract: A compound represented by Formula (I) or (II). wherein A is a single bond or a divalent residue of biphenyl, triphenyl, ?in each of which one or more hydrogen atoms attached in the carbon atoms may be replaced by a substituent other than hydrogen, wherein Z is any one selected from N, O, S, and SiR, Y is N—R, O, S, Si(R)2 where R is C1-20 alkyl or aryl, R1 and R2 are independently selected from hydrogen or C1-20 alkyl; X1 to X4 are independently selected from substituents other than spirobifluorenyl, A, B1 or B2 l, p and q are integers of from 0 to 4; m is an integer of from 0 to 3, wherein B1 and B2 are independently selected from hydrogen and a heterocyclic group; r is an integer of from 0 to 3; and X1 to X4, m, p, and q are as defined in Formula (I), with the proviso that B1 and B2 are not hydrogen simultaneously. The use of such compounds in OLEDs is also claimed.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: May 22, 2018
    Assignee: SUMITOMO CHEMICAL CO., LTD.
    Inventors: Jonathan Maunoury, Enrico Orselli, Dominique Bascour