Patents Assigned to Sumitomo Seika Chemicals Co., Ltd.
  • 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
  • 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: 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
  • 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
  • Patent number: 10945890
    Abstract: A method for manufacturing an absorbent body according to the present invention includes a first step of successively introducing an aggregate of absorbent fibers and a water-absorbent resin into a gap that is formed between a first surface and a second surface and is smaller than a thickness of the aggregate of the absorbent fibers, recesses and protrusions being formed on at least one of the first surface and the second surface, a second step of applying a shearing force to the aggregate of the absorbent fibers by moving the first surface relative to and parallel to the second surface in order to mix the absorbent fibers and the water-absorbent resin, and a third step of causing the absorbent fibers and the water-absorbent resin that were mixed to fall, and stacking the absorbent fibers and the water-absorbent resin by suctioning the absorbent fibers and the water-absorbent resin into a recessed portion having a predetermined shape.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Hiroki Yabuguchi, Toru Kawahara
  • Publication number: 20200407497
    Abstract: Provided is an aliphatic polycarbonate applicable to the production of a block copolymer by radical polymerization. The aliphatic polycarbonate is represented by formula (1): wherein R1, R2, R3, and R4 are identical or different, and each represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 15 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 20 carbon atoms; A and B are identical or different, and each represents a substituent that serves as an initiating group for living radical polymerization, a hydroxy group, an alkoxy group, an acyloxy group, or a carboxy group, provided that at least one of A and B is a substituent that serves as an initiating group for living radical polymerization; and m is an integer of 10 to 2500.
    Type: Application
    Filed: September 3, 2018
    Publication date: December 31, 2020
    Applicants: NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY, SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Koji NAKANO, Kiyoshi NISHIOKA
  • Patent number: 10873086
    Abstract: This binder for nonaqueous electrolyte secondary battery electrodes contains: a copolymer of vinyl alcohol and an ethylenically unsaturated carboxylic acid alkali metal neutralized product; and a polyalkylene oxide.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: December 22, 2020
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Erina Takahashi, Shun Hashimoto, Junichi Fujishige
  • Publication number: 20200385514
    Abstract: Provided is an epoxy resin composition that has excellent electric characteristics (particularly low dielectric tangent), and that can achieve high adhesive strength to metal. Specifically, provided is an epoxy resin composition comprising an active ester compound and an epoxy resin having a specific structure.
    Type: Application
    Filed: January 9, 2018
    Publication date: December 10, 2020
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki FUKUDA, Ryota HARISAKI, Katsumasa YAMAMOTO
  • Publication number: 20200385565
    Abstract: Provided is an epoxy resin composition that can achieve excellent low dielectric characteristics and high adhesive strength to metal. Specifically, provided is an epoxy resin composition comprising organic fine particles and an epoxy resin having a specific structure.
    Type: Application
    Filed: January 9, 2018
    Publication date: December 10, 2020
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Noriaki FUKUDA, Ryota HARISAKI, Katsumasa YAMAMOTO
  • Publication number: 20200362155
    Abstract: Provided is a water-absorbent resin dispersion that is capable of maintaining the dispersibility of a water-absorbent resin more readily than conventional dispersions. The water-absorbent resin dispersion of the present invention comprises a water-absorbent resin, a thickener, and an organic solvent, the thickener being dissolved in the organic solvent, and the water-absorbent resin being dispersed in the organic solvent. The water-absorbent resin dispersion of the present invention is capable of maintaining the dispersibility of a water-absorbent resin more readily than conventional dispersions.
    Type: Application
    Filed: August 20, 2018
    Publication date: November 19, 2020
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventor: Toru IDO
  • Patent number: 10835887
    Abstract: The present invention provides a method for producing water-absorbent resin particles that has a low stirring load, and can produce water-absorbent resin particles having a particle diameter within a specific range, with high productivity. The method for producing water-absorbent resin particles comprises adding an ethylenically unsaturated monomer all at once to a hydrocarbon dispersion medium mixed with a surfactant to perform reversed phase suspension polymerization, wherein the reversed phase suspension polymerization is performed in one step, or two or more steps, the surfactant is at least one selected from the group consisting of polyoxyethylene alkyl ether phosphates, alkali metal salts of polyoxyethylene alkyl ether phosphates, and alkaline earth metal salts of polyoxyethylene alkyl ether phosphates, and the surfactant has an HLB of 9 to 15.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: November 17, 2020
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD
    Inventors: Maoki Hama, Koji Takagi, Kenta Kumazawa, Sho Isokawa
  • Publication number: 20200316549
    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: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Applicant: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Masato Kotake, Tetsuya Takechi, Hideo Kazama