Patents Assigned to JNC Corporation
  • Publication number: 20230399469
    Abstract: A dispersant is capable of giving excellent filler dispersibility in a liquid medium. The dispersant is an organopolysiloxane represented by formula (1) or (2), wherein R1 is a C1-12 saturated hydrocarbon group, X is a group represented by formula (3), acryloyl, alkyl, carboxyl, vinyl, methacryl, an aromatic group, amino, isocyanato, isocyanurato, epoxy, hydroxyl or mercapto, at least one X is a group represented by formula (3), m, l and k are 0 to 10, and j is 1 to 10. In formula (3), R2 is a C1-12 saturated hydrocarbon group or a C6-12 aromatic hydrocarbon group, Y is a C1-8 divalent hydrocarbon group, and h is 4 to 400.
    Type: Application
    Filed: October 26, 2021
    Publication date: December 14, 2023
    Applicant: JNC CORPORATION
    Inventors: Shugo TANAKA, Yoshihiro DEYAMA
  • Publication number: 20230366878
    Abstract: A method of isolating viruses from a liquid with the possibility of containing viruses, including a process of mixing a liquid with the possibility of containing viruses and a water-soluble cationic magnetic fine particle aqueous solution to form conjugates of the cationic magnetic fine particles and the viruses in a mixed solution, a process of mixing a masking agent and an aggregating agent in the mixed solution to form a magnetic composite in which the conjugates are aggregated, and a process of recovering the magnetic composite by magnetic separation, wherein the masking agent is a poly(meth)acrylic acid having a mass-average molecular weight of 5,000 to 100,000, and the poly(meth)acrylic acid is mixed in the mixed solution in a concentration range of 0.01 to 0.1 mass %.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 16, 2023
    Applicants: UNIVERSITY OF YAMANASHI, JNC CORPORATION
    Inventor: Eiji HARAMOTO
  • Patent number: 11807758
    Abstract: To provide a siloxane polymer containing a silsesquioxane unit and a chain siloxane unit in the main chain and having a reactive group. A siloxane polymer containing a repeating unit represented by Formula (1): R0's independently represent C6-20 aryl or C5-6 cycloalkyl; R1 independently represent a hydrogen atom, C6-20 aryl, C5-6 cycloalkyl, C7-40 arylalkyl, or C1-40 alkyl; R2, R4, and R6 independently represent C6-20 aryl, C5-6 cycloalkyl, C7-40 arylalkyl, or C1-40 alkyl; R3 represents a monovalent group having a reactive group; R5's independently represent C6-20 aryl, C5-6 cycloalkyl, C7-40 arylalkyl, C1-40 alkyl, or C1-20 alkoxy; y1, y2, and z are an integer of 0 to 30; g? is 0 or 1; and, in the case of y1=y2=z=0, at least one terminal is the group represented by Formula (2).
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: November 7, 2023
    Assignee: JNC CORPORATION
    Inventor: Kazuya Suwa
  • Patent number: 11801660
    Abstract: A laminated acoustic absorption member that includes at least a first fiber layer and a second fiber layer, as well as at least one substrate layer present between the first fiber layer and the second fiber layer, wherein: the first fiber layer has an average flow pore diameter of 0.5-10 ?m and a basis weight of 0.1-200 g/m2; the second fiber layer has an average flow pore diameter of 0.5-10 ?m, the average flow pore diameter of the second fiber layer being equal to or less than that of the first fiber layer, and also has a basis weight of 0.1-200 g/m2; the substrate layer has an air permeability of 40 cc/cm2·s or greater as measured by the Frazier method, and a basis weight of 1-700 g/m2; and the first fiber layer and the second fiber layer are disposed on a sound-incidence side and a sound-transmission side, respectively.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 31, 2023
    Assignees: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventors: Takayuki Hattori, Hidemi Ito
  • Publication number: 20230295427
    Abstract: A siloxane polymer contains a silsesquioxane unit and a linear siloxane unit in its main chain and has a cage-type silsesquioxane structure in its side chain. A highly transparent and flexible film having a small linear thermal expansion coefficient is produced by utilizing the cohesion force (physical crosslinking) of the cage-type silsesquioxane in the side chain. The siloxane polymer has repeating units respectively represented by formulae (1) and (4), and has terminal groups respectively represented by formulae (5L) and (5R) at its right and left terminals, wherein A represents a structure shown below.
    Type: Application
    Filed: July 29, 2021
    Publication date: September 21, 2023
    Applicant: JNC CORPORATION
    Inventors: Nobuo ENOKI, Kazuya SUWA, Ayaka KIYA, Mikio YAMAHIRO, Takeshi MATSUSHITA, Taro ISHIKAWA, Hisao OIKAWA
  • Publication number: 20230265343
    Abstract: A liquid crystal composition, which is a material used for an element for electromagnetic wave signal control in a frequency range of 1 GHz to 10 THz, satisfies at least one of characteristics such as a wide temperature range of a nematic phase and a large refractive index anisotropy and a small dielectric loss tangent (tan ?) in the frequency region used for control, and has an excellent balance of characteristics, and an element containing the composition. A liquid crystal composition including: at least one compound selected from the group consisting of compounds represented by Formula (1). For example, R1 is C1-12 alkyl; Z11 is a single bond; L11, L12, L13 and L18 are hydrogen; L17 is methyl; Y11 and Y22 are hydrogen; and a, b, and c are respectively 0, 1, and 0.
    Type: Application
    Filed: February 10, 2023
    Publication date: August 24, 2023
    Applicants: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Eiji OKABE, Takanori MORI, Kazushi SHIREN, Yuko KATANO
  • Publication number: 20230263866
    Abstract: The present invention has revealed that an antiviral agent containing a serine protease such as subtilisin, nattokinase, and trypsin has an effect of inactivating non-envelope type viruses, and that combining such an antiviral agent containing a serine protease with a cationic polymer enhances the inactivation effect of the antiviral agent against non-envelope type viruses. As a result, an antiviral agent that is highly safe, that has a high virus inactivation ability, and that contains a component that is inexpensive in terms the manufacturing cost and a cationic polymer, was discovered.
    Type: Application
    Filed: May 14, 2021
    Publication date: August 24, 2023
    Applicant: JNC CORPORATION
    Inventors: Nana YOKOTA, Tomomi NAKANO, Masako HINATSU, Jun HIRAKI, Hideaki FUKUSHI
  • Publication number: 20230226473
    Abstract: The present invention provides a depth filter which contains fine particles and coarse particles, and which exhibits excellent filtration precision with respect to a high concentration fluid and/or a high viscosity fluid. This depth filter enables filtration for a long period of time, while maintaining a low filtration pressure. The present invention is a depth filter which is obtained by winding a fiber sheet into a cylinder, and which comprises a pre-filtration layer and a microfiltration layer; the pre-filtration layer and the microfiltration layer are formed of a fiber sheet; the fiber sheet is composed of a nonwoven fabric or a web; the average fiber diameter of the fiber sheet continuously decreases from the pre-filtration layer toward the microfiltration layer; and the average weight per square meter of the fiber sheet continuously decreases from the pre-filtration layer toward the microfiltration layer.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 20, 2023
    Applicants: JNC CORPORATION, JNC FILTER CO., LTD.
    Inventors: Ryota MINEO, Akitomo TANAKA, Yoshihiro NAKAMURA, Osamu YAMAGUCHI
  • Publication number: 20230203222
    Abstract: A polymerizable composition curable by ionizing radiation contains (A) a first component including a (meth)acryloylmorpholine represented by formula (1), and (B) a second component including a compound represented by formula (2). The total content of the first component and the second component in the polymerizable composition is 50 wt % or more. The polymerizable composition enables appropriate maintaining of a post-curing shape even after being in a high temperature environment, and enables dissolution thereof by a water-containing solution. In formula (1), R1 is hydrogen or methyl. In formula (2), R2 is hydrogen or a group having 1 to 6 carbons, R3 and R4 are each independently hydrogen or a group having 20 or less carbons, and n is an integer of 1 to 6.
    Type: Application
    Filed: June 16, 2021
    Publication date: June 29, 2023
    Applicant: JNC CORPORATION
    Inventor: Katsuyuki SUGIHARA
  • Patent number: 11685793
    Abstract: One embodiment shows a method for producing porous cellulose particles, including: (a) dissolving cellulose diacetate into a solvent to prepare a cellulose diacetate solution; (b) dispersing the cellulose diacetate solution into a medium immiscible with the cellulose diacetate solution to obtain a dispersed system; (c) cooling the dispersed system; (d) adding a poor solvent to the cooled dispersed system to precipitate cellulose diacetate particles; and (e) saponifying the cellulose diacetate particles.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: June 27, 2023
    Assignee: JNC CORPORATION
    Inventors: Toru Kurabayashi, Shigeyuki Aoyama, Akihiro Uchida
  • Publication number: 20230151237
    Abstract: A photocurable composition is capable of forming a cured product that has good reliability in a high-temperature constant-humidity environment, especially good ion migration resistance in a temperature range of 100° C. or higher. The photocurable composition (Z) is obtained by adding an ion scavenger (Y) to a composition (X) containing a monofunctional acrylic monomer (A) and a multifunctional acrylic monomer (B), wherein the content of the monofunctional acrylic monomer (A) relative to 100 wt% of the composition (X) is from 40 wt% to 80 wt%, and the content of the multifunctional acrylic monomer (B) relative to 100 wt% of the composition (X) is from 10 wt% to 50 wt%. An inkjet ink composition contains the photocurable composition (Z); a cured product; and an electronic component.
    Type: Application
    Filed: June 17, 2021
    Publication date: May 18, 2023
    Applicant: JNC CORPORATION
    Inventors: Masaaki YOHDA, Takayuki HIROTA, Kohsuke YOSHITOMI, Katsuyuki SUGIHARA, Hisao OIKAWA
  • Publication number: 20230148041
    Abstract: A small transistor type sensor capable of detecting a specific compound such as oxytocin is provided. The transistor type sensor includes a detection electrode that detects a compound by capturing the compound, and a field effect transistor that has a gate electrode connected to the detection electrode, wherein a surface of the detection electrode is provided with a film of a molecularly imprinted polymer having a space to which the compound is allowed to bond.
    Type: Application
    Filed: October 13, 2022
    Publication date: May 11, 2023
    Applicants: THE UNIVERSITY OF TOKYO, JNC CORPORATION
    Inventors: Tsuyoshi MINAMI, Qi ZHOU, Yusuke YAMANASHI, Katsumasa NAKAHARA, Hirokazu NAGAOKA
  • Patent number: 11623904
    Abstract: Provided is a process in which a cyclobutanediol compound having a high cis:trans ratio can be stably obtained. The cyclobutanediol compound having a cis:trans ratio of 1.5:1 to 5000:1 is produced by using at least one compound selected from a group consisting of a cyclobutanedione compound, a cyclobutane ketol compound, and a cyclobutanediol compound as a raw material, and performing a catalytic hydrogenation reaction and an isomerization reaction in the cyclobutanediol compound in a solid phase state in the presence of a metal catalyst without adding a solvent.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: April 11, 2023
    Assignee: JNC CORPORATION
    Inventors: Shinichi Furusato, Toshiyuki Kawanabe, Kaori Tsuruoka, Hironao Sajiki, Tsuyoshi Yamada, Kwihwan Park
  • Publication number: 20230108173
    Abstract: A photocurable composition is capable of forming a cured product having good adhesiveness to an inorganic base material and having good ion migration resistance. The photocurable composition includes a monofunctional acrylic monomer (A) in an amount of 40 to 80 wt % relative to 100 wt % of the composition, a polyfunctional acrylic monomer (B) in an amount of 10 to 50 wt % relative to 100 wt % of the composition, and a hydroxyl value adjusting agent (C) in an amount of 0.1 to 30 wt % relative to 100 wt % of the composition, wherein the hydroxyl value of the composition is 1 to 100 mgKOH/g.
    Type: Application
    Filed: March 9, 2021
    Publication date: April 6, 2023
    Applicant: JNC CORPORATION
    Inventors: Ayako KIKUCHI, Shungo KOJIMA, Kohsuke YOSHITOMI, Yuka TAKAHASHI, Katsuyuki SUGIHARA
  • Publication number: 20230024193
    Abstract: A transistor-type sensor capable of detecting a compound having an amino group has a simple structure and also is expected to be effective in antioxidation action and prevention of dementia, etc. The transistor-type sensor includes a detection electrode for capturing a compound having an amino group for detection, and a transistor having a gate electrode connected with the detection electrode. The detection electrode has a cucurbituril structure-containing compound immobilized on the surface thereof.
    Type: Application
    Filed: February 19, 2021
    Publication date: January 26, 2023
    Applicants: The University of Tokyo, JNC CORPORATION
    Inventors: Tsuyoshi MINAMI, Katsumasa NAKAHARA, Toshihiro KOIKE
  • Publication number: 20220416152
    Abstract: A barium titanate fiber is useful as a filler for a polymer composite piezoelectric body, a polymer composite piezoelectric body has high piezoelectric properties, and a piezoelectric element utilizes the polymer composite piezoelectric body. In the barium titanate fiber, the molar ratio of barium atoms to titanium atoms (Ba/Ti ratio) falls within the range of 1.01 to 1.04. The polymer composite piezoelectric body includes a resin composition containing the barium titanate fiber and a polymer. The piezoelectric element including an electrically conductive layer on one surface or both surfaces of the polymer composite piezoelectric body.
    Type: Application
    Filed: July 27, 2020
    Publication date: December 29, 2022
    Applicant: JNC CORPORATION
    Inventors: You UMEBAYASHI, Miwako NISHIMURA
  • Publication number: 20220410525
    Abstract: A sound-absorbing material has an excellent sound absorbing property in a low-frequency range, an intermediate-frequency range, and a high-frequency range. The sound-absorbing material is a laminated sound-absorbing material, which includes at least one first layer, and at least one second layer that differs from the first layer. The first layer has a mean flow pore diameter of 2.0 to 60 ?m and an air permeability according to the Frazier method of 30 to 200 cc/cm2·s. The second layer is a layer including at least one kind selected from a foamed resin, a nonwoven fabric and a woven fabric, has a thickness of 3 to 40 mm, and has a density that is lower than the first layer and is 51 to 150 kg/m3. The first layer is disposed on a sound incidence side of the second layer.
    Type: Application
    Filed: March 16, 2020
    Publication date: December 29, 2022
    Applicants: JNC CORPORATION, JNC FIBERS CORPORATION
    Inventors: Takayuki HATTORI, Hidemi ITO
  • Patent number: 11535717
    Abstract: There is provided a novel ionic composite material that can be molded into various shapes using lignin sulfonic acid as one of raw materials thereof, and having flexibility and elasticity, to significantly improve the strength and toughness and impart complete biodegradability thereto. It was found that a combination of ?-polylysine (?-PL) which is a cationic polymer that is produced by microorganisms and lignin sulfonic acid exhibits excellent strength and toughness. In addition, ?-PL used in this technology is a biodegradable polymer that is completely degraded by microorganisms and the like in the environment. Since lignin sulfonic acid is also a biodegradable polymer, it is thought that a complex in which ?-PL and lignin sulfonic acid are mixed in this technology will exhibit complete biodegradability, and more applications thereof can be expected when utilizing the strength, durability, and biodegradability thereof in addition to the improved strength and toughness.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: December 27, 2022
    Assignees: JNC CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kazunori Ushimaru, Tokuma Fukuoka, Tomotake Morita
  • Patent number: 11531223
    Abstract: To prevent arcing discharge of a liquid crystal device. Provided is a liquid crystal device including a liquid crystal layer, a first substrate, a second substrate and an insulating film, wherein the liquid crystal layer is arranged between the first substrate and the second substrate, the first substrate includes electrode 1, the second substrate includes electrode 2, the insulating film is arranged between electrode 1 and electrode 2, and the insulating film is a cured product of a thermosetting polymer composition.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: December 20, 2022
    Assignee: JNC CORPORATION
    Inventors: Chien Cheng Liu, Yi Cheng Lan, Yi Pin Lee, Ren Lung Chen, Kuie Hua Hsieh, Chun Hung Chiang, Hiroaki Fujita
  • Patent number: 11492551
    Abstract: As a material used in an element used for phase control of an electromagnetic wave signal having a frequency of 1 GHz to 10 THz, a liquid crystal composition is required, which has a high upper limit temperature of a nematic phase, a low lower limit temperature of a nematic phase, large dielectric anisotropy and a small tan ? in a frequency region where the phase control of an electromagnetic wave signal is performed, and stability against heat, and which has an excellent balance of the characteristics. A liquid crystal composition which is used in an element for phase control of an electromagnetic wave signal having any frequency from 1 GHz to 10 THz, the liquid crystal composition containing at least one compound selected from compounds represented by Formula (1) as a first component.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: November 8, 2022
    Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATION
    Inventors: Takanori Mori, Yoichi Uriu, Eiji Okabe, Hitoshi Tobata