Patents Assigned to Sumitomo Seika Chemicals Co., Ltd.
  • Publication number: 20210288326
    Abstract: Provided are a lithium ion secondary battery in which heat generation is suppressed when the battery is internally short-circuited by an external impact, such as nail penetration or collapse, or short-circuited by foreign matter contamination or the like; and an electrical appliance using the battery. More specifically, the following lithium ion secondary battery and electrical appliance comprising the lithium ion secondary battery are provided.
    Type: Application
    Filed: October 11, 2017
    Publication date: September 16, 2021
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Yuta IKEUCHI, Taichi SAKAMOTO, Takashi MUKAI, Masahiro YANAGIDA, Junichi FUJISHIGE, Masako KINNO, Erina TAKAHASHI
  • Publication number: 20210284820
    Abstract: An aqueous solution and an aqueous dispersion of a composition that contains a polyalkylene oxide, a phenolic antioxidant and a sulfur-containing amine compound are less likely to impair the stability of the polyalkylene oxide even in the case of containing an alkali. In the above composition, the content of each of the phenolic antioxidant and the sulfur-containing amine compound is preferably set to 0.001 to 5 pasts by mass based on 100 parts by mass of the polyalkylene oxide, and the ratio of the sulfur-containing amine compound relative to 100 parts by mass of the phenolic antioxidant is preferably set to 20 to 200 pasts by mass.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noboru YAMAGUCHI, Toru IDO, Amina TASHIRO
  • Patent number: 11117111
    Abstract: An apparatus for producing water-absorbing resin particles for which surface cross-linking treatment is conducted, the surface cross-linking treatment being conducted by spraying a surface cross-linking agent to a water-absorbing resin particle precursor and heating the agent and the precursor, the apparatus includes a treatment container in which the surface cross-linking treatment is conducted, a stirring device including a stirring member disposed in the treatment container, a heating device that heats an inside of the treatment container; and a spray nozzle disposed in the treatment container, the spray nozzle spraying into the treatment container the surface cross-linking agent supplied from a surface cross-linking agent supply source in an exterior of the treatment container through a supply pipe. In a flow path in the spray nozzle spanning from an entrance of the spray nozzle to a spray exit, a point whose opening cross-section is smallest in a flow path through which a fluid passes is the spray exit.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: September 14, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Masato Kotake, Tetsuya Takechi, Hideo Kazama
  • Publication number: 20210277282
    Abstract: Provided is a polishing means that can improve the flatness of a substrate without significantly reducing the polishing speed. More specifically, provided is a polishing composition comprising inorganic particles, water, and a water-soluble polymer, wherein (i) a 1 mass (wt/wt) % aqueous solution of the water-soluble polymer has a normal stress (N) of 1 or more at a shear rate of 10000 (1/S), or (ii) a 0.25 mass (wt/wt) % aqueous solution of the water-soluble polymer has a normal stress (N) of 1 or more at a shear rate of 10000 (1/S).
    Type: Application
    Filed: July 1, 2019
    Publication date: September 9, 2021
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Tsuyoshi MASUDA, Hideaki NISHIGUCHI
  • Publication number: 20210277281
    Abstract: A polishing means is provided that can improve the flatness of a substrate without significantly reducing the polishing speed. More specifically, a polishing composition is provided which includes inorganic particles, water, and a modified polyalkylene oxide represented by formula (1): wherein each R1 is independently a group represented by R11—(O—R12)x—, where each R11 is independently a C1-24 alkyl group, each R12 is independently a C2-4 alkylene group, and x is an integer of 0 to 500; each R2 is independently a hydrocarbon group; each R3 is independently a C2-4 alkylene group; n is an integer of 1 to 1000, and m is an integer of 1 or more.
    Type: Application
    Filed: July 1, 2019
    Publication date: September 9, 2021
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Tsuyoshi MASUDA, Hideaki NISHIGUCHI
  • Patent number: 11111382
    Abstract: Provided is an epoxy resin composition having excellent low dielectric characteristics. Specifically, provided is an epoxy resin composition comprising a polyphenylene ether and an epoxy resin having a specific structure.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: September 7, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki Fukuda, Ryota Harisaki, Katsumasa Yamamoto
  • Patent number: 11096961
    Abstract: To provide a gaseous pharmaceutical composition for suppressing spinal cord ischemic disorder, comprising carbon dioxide.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: August 24, 2021
    Assignees: SUMITOMO SEIKA CHEMICALS CO., LTD., Kotaro Kida
    Inventor: Kotaro Kida
  • Patent number: 11091627
    Abstract: Provided is an epoxy resin composition having excellent adhesion and low dielectric characteristics. Specifically, provided is an epoxy resin composition comprising an acid-modified polyolefin resin and an epoxy resin having a specific structure.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: August 17, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki Fukuda, Ryota Harisaki, Katsumasa Yamamoto
  • Patent number: 11084902
    Abstract: Provided is an aliphatic polycarbonate resin having excellent water repellency. Also provided are a partition material, a substrate and a method for producing the same, a method for producing a wiring substrate, and a wiring forming method. The aliphatic polycarbonate resin of the present invention comprises a structural unit represented by the following formula (1): wherein R1, R2, and R3 are each independently a hydrogen atom, a C1-C10 alkyl group, or a C6-C20 aryl group; X is a substituent having a fluorine atom; and R1, R2, and R3 may be the same or different; and the aliphatic polycarbonate resin has a contact angle against water of 90° or more.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: August 10, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Kiyoshi Nishioka, Hideyuki Takeda
  • Patent number: 11084020
    Abstract: A water-absorbent resin that exhibits a high liquid-retention capacity under a load and a small amount of re-wet, even when it is used in an absorbent material having a low proportion of hydrophilic fibers. The water-absorbent resin includes a polymer of a water-soluble ethylenically unsaturated monomer, wherein when a cross-sectional image of the water-absorbent resin is observed using X-ray computed tomography, the water-absorbent resin has cavity area percentage in the cross-sectional image of 10% or less.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: August 10, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Mikito Chiba, Yuichi Onoda
  • Patent number: 11084915
    Abstract: Provided is a means capable of realizing a surface-roughening method for modifying the surface of a resin molded article to form a surficial layer, such as a coating or plating, or to impart a function derived from the surface configuration. The method comprises adding a resin composition and performing a post-treatment and is thus simpler and easier than conventional methods. The resin composition is a composition for resin surface roughening that contains an aliphatic polycarbonate and an alkali metal salt.
    Type: Grant
    Filed: December 26, 2016
    Date of Patent: August 10, 2021
    Assignees: Sumitomo Seika Chemicals Co., Ltd., Osaka Research Institute of Industrial Science and Technology
    Inventors: Kiyoshi Nishioka, Hiroki Maeda, Kei Ishikura, Kimihiro Matsukawa, Yukiyasu Kashiwagi, Masashi Saitoh
  • Publication number: 20210228621
    Abstract: This invention provides a means capable of treating skin ulcers. More specifically, the invention provides a composition for preventing and/or treating skin wounds, the composition comprising carbon monoxide.
    Type: Application
    Filed: May 16, 2019
    Publication date: July 29, 2021
    Applicants: SUMITOMO SEIKA CHEMICALS CO., LTD., KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION
    Inventors: Tomohisa TAKAGI, Jun ASAI, Tetsuya OKAYAMA, Katsura MIURA, Shigeki SAKAUE
  • Patent number: 11066510
    Abstract: The present invention provides an epoxy resin composition that can produce a cured product maintaining good dielectric characteristics (low dielectric constant and low dielectric loss tangent), and having high adhesion strength to metal; and also provides a process for producing the same, a cured product obtained by curing the epoxy resin composition, and use thereof. The present invention includes an epoxy resin composition comprising an epoxy resin, an acid anhydride-based curing agent, and a curing accelerator, the epoxy resin being represented by the formula (1): wherein X is a divalent group obtained by removing two hydrogen atoms from a hydrocarbon ring, or a divalent group represented by the formula (2): wherein Y is a bond, a C1-6 alkylene group, etc.; R1 is the same or different, and is a C1-18 alkyl group, etc., R2 is the same or different, and is a C1-18 alkylene group, etc., R3 is the same or different, and is a C1-18 alkyl group, etc.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: July 20, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki Fukuda, Ryota Harisaki, Katsumasa Yamamoto, Nobukatsu Nemoto
  • Publication number: 20210195887
    Abstract: The present invention provides a composition that can preserve biomaterials. The biomaterial preservation composition of the present invention includes a microbubble.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 1, 2021
    Applicants: Aichi Medical University, Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Naoyuki Hatayama, Munekazu Naito, Shuichi Hirai, Shigeki Sakaue
  • Patent number: 11038201
    Abstract: Disclosed is an additive for non-aqueous electrolyte solutions, which include a compound represented by Formula (1). In Formula (1), X represents a sulfonyl group or a carbonyl group, R1 represents an alkyl group having 1 to 4 carbon atoms which may be substituted with a halogen atom, or the like, and R2 represents a divalent hydrocarbon group having 1 to 3 carbon atoms which may be substituted with a halogen atom, or represents a divalent group formed of a divalent hydrocarbon group having 1 to 3 carbon atoms which may be substituted with a halogen atom, and an oxygen atom that constitutes a cyclic structure together with the hydrocarbon group.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 15, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Yuki Kono, Shohei Fujimoto, Koji Fujita
  • Publication number: 20210161951
    Abstract: This invention provides a more efficient means for treating inflammatory gastrointestinal diseases using CO. More specifically, the invention provides a composition for preventing and/or treating inflammatory gastrointestinal diseases, the composition comprising carbon monoxide and a solvent, the CO concentration being 800 ?M or more.
    Type: Application
    Filed: May 16, 2019
    Publication date: June 3, 2021
    Applicants: SUMITOMO SEIKA CHEMICALS CO., LTD., KYOTO PREFECTURAL PUBLIC UNIVERSITY CORPORATION
    Inventors: Tomohisa TAKAGI, Yuji NAITO, Katsura MIURA, Shigeki SAKAUE
  • Publication number: 20210137098
    Abstract: The present invention provides a composition that can preserve cells. The composition of the present invention includes a microbubble.
    Type: Application
    Filed: May 31, 2019
    Publication date: May 13, 2021
    Applicants: Aichi Medical University, Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Naoyuki Hatayama, Munekazu Naito, Shuichi Hirai, Kaori Fukushige, Shigeki Sakaue
  • Patent number: 10988560
    Abstract: There is provided a method for producing a carboxyl group-containing polymer composition that is excellent in all of the following: dispersibility in water or the like immediately after the preparation, storage stability, and the transparency of a neutral viscous solution thereof. A method for producing a carboxyl group-containing polymer composition, the carboxyl group-containing polymer composition comprising a carboxyl group-containing polymer (A) that is a copolymer of monomers comprising an ?,?-unsaturated carboxylic acid (a-1) and a compound (a-2) having at least two ethylenically unsaturated groups per molecule; and a nonionic surfactant (B), the method comprising the step of copolymerizing the monomers, wherein in the step, the nonionic surfactant (B) is added into the system when the polymerization degree of the ?,?-unsaturated carboxylic acid (a-1) has reached 70 to 100%.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: April 27, 2021
    Assignee: Sumitomo Seika Chemicals Co., Ltd.
    Inventors: Satoshi Nishiguchi, Ryosuke Murakami, Shingo Izawa, Miyu Ikeda, Rie Nakashima
  • Publication number: 20210119255
    Abstract: Disclosed is a non-aqueous electrolytic solution for an energy storage device, including a non-aqueous solvent, an electrolyte salt, a first additive consisting of a sulfolane compound represented by the following formula (1), and a second additive which is at least one selected from the group consisting of a cyclic sulfuric ester compound represented by the following formula (2a) and a dinitrile compound represented by the following formula (2b):
    Type: Application
    Filed: May 21, 2019
    Publication date: April 22, 2021
    Applicants: MU IONIC SOLUTIONS CORPORATION, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Masahide KONDO, Kei SHIMAMOTO
  • Patent number: 10980715
    Abstract: There is provided a gel composition that can be suitably used as a thickener for cosmetic preparations and the like. A gel composition comprising a neutralized product of an alkyl-modified carboxyl group-containing polymer, which is a copolymer of monomers comprising 100 parts by mass of (meth)acrylic acid (a), 2.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester (b) in which the alkyl group has 18 to 24 carbon atoms, and 0.1 part by mass or less of a compound (c) having two or more ethylenically unsaturated groups; and at least one of an anionic emulsifier and a nonionic emulsifier.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: April 20, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Ryosuke Murakami, Shingo Izawa, Satoshi Nishiguchi, Miyu Ikeda, Rie Nakashima