Patents Assigned to Nippon Paper Industries Co., LTD
  • Publication number: 20210293661
    Abstract: Provided is an abnormality detection device with which, even if a plurality of target machines are being managed, early detection of an abnormality in each target machine is possible.
    Type: Application
    Filed: October 30, 2019
    Publication date: September 23, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventor: Susumu NOZOE
  • Publication number: 20210292632
    Abstract: A solid product of a lignin-containing composition can have high dispersibility and heat stability; a solid product of a high performance lignin derivative can be used as a dispersing agent, useful at a construction site, with a concrete, and/or as a premix mixed with a hydraulic composition. A composition can serve as a dispersing agent capable of providing various substances to be dispersed with a thickening property and of enhancing the properties thereof, regardless of the use thereof such as for a hydraulic composition, dye, inorganic or organic pigment, coal-water slurry, agricultural chemical, ceramic, and/or oil drilling mud. The composition includes a lignin sulfonic acid-based compound and a water-soluble compound, or includes a lignin derivative that is a reaction product of a lignin sulfonic acid-based compound with an aromatic water-soluble compound and that satisfies prescribed conditions; and the composition may be a granular product or a liquid product.
    Type: Application
    Filed: August 8, 2019
    Publication date: September 23, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Akihiko NAKAMURA, Kanae TAKAHASHI, Takuma NAKAMURA, Sumio TAMURA, Tubasa KANENAKA
  • Publication number: 20210292530
    Abstract: A chlorinated polyolefin resin may have excellent adhesion and can be produced without using a chlorinated solvent and without producing by-products through a series of production processes. Such a chlorinated polyolefin resin may be a chlorinated polyolefin resin having an amount of chlorine of 1% by weight to 45% by weight obtained by chlorinating a raw material composition in the absence of an organic solvent, wherein the raw material composition includes at least a polyolefin A or an acid-modified product thereof which has fluidity at 40° C. or less and a polyolefin B or an acid-modified product thereof which has a melting point of more than 40° C. and 150° C. or less.
    Type: Application
    Filed: July 22, 2019
    Publication date: September 23, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Minoru YADA, Naosuke KOMOTO
  • Patent number: 11118020
    Abstract: Disclosed herein is method for preparing a masterbatch by dispersing chemically modified cellulose nanofibers having carboxy groups under acidic conditions and then mixing the dispersed cellulose nanofibers with rubber latex. More specifically, the present disclosure provides a method for producing a masterbatch, including: (A) a step of introducing a carboxy group to a cellulose-based raw material to prepare a modified cellulose; (B) a step of carrying out defibration treatment and dispersion treatment of the modified cellulose to prepare a cellulose nanofiber; (C) a step of acidifying the cellulose nanofiber to prepare an acid type cellulose nanofiber; and (D) a step of mixing the acid type cellulose nanofiber and a rubber component. The rubber composition having excellent strength such as tensile strength can be provided by using the obtained masterbatch.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: September 14, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kotaro Ito, Yusuke Yasukawa
  • Publication number: 20210276878
    Abstract: The present invention aims to provide techniques for efficiently synthesizing inorganic microparticles. According to the present invention, inorganic carbonate microparticles can be synthesized by generating ultrafine bubbles containing carbonic acid gas by injecting a gas containing carbonic acid gas and a liquid into a reaction vessel through a nozzle to deposit an inorganic carbonate having an average primary particle size of 300 nm or less in the presence of the ultrafine bubbles.
    Type: Application
    Filed: September 4, 2017
    Publication date: September 9, 2021
    Applicants: NIPPON PAPER INDUSTRIES CO., LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masatoshi Oishi, Toru Nakatani, Moe Fukuoka, Shisei Goto
  • Patent number: 11105789
    Abstract: Provided is method for evaluating a cellulose nanofiber (CNF) dispersion, the method including: (1) a step of preparing 1.0 mass % of a CNF aqueous dispersion; (2) a step of adding a coloring material into the CNF aqueous solution and stirring with a vortex mixer; (3) a step of sandwiching a film of the coloring material-containing CNF aqueous dispersion between two glass plates such that said film has a thickness of 0.15 mm; (4) a step of observing, with a microscope, the film of the coloring material-containing CNF aqueous dispersion sandwiched between the two glass plates; (5) a step of sorting observed aggregates by size (diameter along major axis) thereof; and (6) a step of calculating a CNF dispersion index from the number of sorted aggregates and evaluating the dispersibility of the CNF aqueous dispersion.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: August 31, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeshi Fujii, Fumiko Iwahori, Kaori Yamabe, Takeshi Nakatani, Shinji Sato, Koji Kimura
  • Publication number: 20210265635
    Abstract: An organic expander for a lead storage battery, the organic expander containing lignin in which the methoxy group content relative to the solid content is 3 to 20 mass %, wherein the organic expander contains an organic acid in an amount of 0.0001 to 5 mass % relative to the solid content of the organic expander. It is possible to improve charge acceptance while maintaining the discharge characteristics of the lead storage battery.
    Type: Application
    Filed: July 8, 2019
    Publication date: August 26, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shigeki YOKOYAMA, Hikaru AIMI
  • Patent number: 11092587
    Abstract: Herein provided are methods for evaluating cellulose nanofiber dispersions, comprising the steps of: (1) preparing a cellulose nanofiber dispersion; (2) adding a color material into the cellulose nanofiber dispersion; and (3) observing the cellulose nanofiber dispersion to which a colored pigment has been added with a light microscope. The methods allow for easy evaluation of whether or not agglomerates of cellulose nanofibers exist in cellulose nanofiber dispersions, which cannot be visually determined.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: August 17, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeshi Nakatani, Shinji Sato, Koji Kimura
  • Patent number: 11077033
    Abstract: The present invention aims to provide techniques for preparing complexes of a hydrotalcite and a fiber. The complexes of a hydrotalcite and a fiber can be synthesized efficiently by synthesizing the hydrotalcite in an aqueous system in the presence of the fiber.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 3, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masatoshi Oishi, Naoyuki Sugawara, Shisei Goto
  • Patent number: 11072454
    Abstract: A liquid paper container capable of preventing leakage of a liquid and intrusion of, for example, air into the container through a gap between a part of a corresponding one of top-portion horizontal folding creases formed in a blank sheet and a top-portion horizontal folding crease formed in a side sealing panel, which overlap with each other, top panels (11, 12) and side panels (15, 16) are respectively contiguous with upper ends of body panels through top-portion horizontal folding creases (9, 10, 13, 14). Bottom panels (21, 22) and inner panels (25, 26) are respectively contiguous with lower ends of the body panels through bottom-portion horizontal folding creases (19, 20, 23, 24). A side sealing panel (30) is contiguous with a one-side open end edge of a blank sheet (1A). A top-portion horizontal folding crease (31) and a bottom-portion horizontal folding crease (32) are formed in the side sealing panel.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: July 27, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Tatsuo Wada, Kazuhiko Sase, Takashi Omori, Yukihiro Tanaka, Eiichi Asoi
  • Publication number: 20210221918
    Abstract: An object of the present invention is to provide cellulose acetate that has excellent compatibility with a resin, can reinforce a resin, and has excellent thermal stability. An embodiment of the present invention is cellulose acetate having a cellulose triacetate I crystal structure, wherein a temperature at which a weight loss relative to weight at 100° C. reaches 5% is 200° C. or higher when the cellulose acetate is heated at a heating rate of 10° C./min under a nitrogen atmosphere.
    Type: Application
    Filed: June 12, 2019
    Publication date: July 22, 2021
    Applicants: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY, NIPPON PAPER INDUSTRIES CO., LTD., DAICEL CORPORATION
    Inventors: Yasumitsu URAKI, Haruo KONNO, Shu SHIMAMOTO
  • Publication number: 20210221926
    Abstract: A modified polyolefin resin is described. The modified polyolefin resin can enhance a cleaning property upon cleaning inside of a coating machine with a cleaning solvent including water, and is excellent in a balance between heat resistance and solution stability. The modified polyolefin resin is a polyolefin resin that is modified with an ?,?-unsaturated carboxylic acid or a derivative thereof and with an amino alcohol having a primary or a secondary amino group.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 22, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Fumiyasu SAKAKIBARA, Ryuji DOI, Kei KONDO, Takao YOSHIMOTO, Chiaki HIRAOKA, Shunji SEKIGUCHI, Isamu ONO, Koji KIMURA, Takato TAKENAKA, Naosuke KOMOTO
  • Patent number: 11053133
    Abstract: The present invention aims to provide techniques for preparing complexes of magnesium carbonate particles and a fiber. The complexes of magnesium carbonate microparticles and a fiber can be synthesized efficiently by synthesizing the magnesium carbonate in a solution containing the fiber.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: July 6, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Moe Fukuoka, Toru Nakatani, Shisei Goto
  • Patent number: 11052694
    Abstract: A water-dispersible sheet is described having suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining water dispersibility. The base paper of the water-dispersible sheet has a multilayer structure, including an inner layer which is not in contact with a tacky adhesive layer and a surface layer which is in contact with the tacky adhesive layer. The layers are independently mixtures of papermaking fibers and an alkalized fibrous carboxymethyl cellulose.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: July 6, 2021
    Assignees: NIPPON PAPER PAPYLIA CO., LTD, Nippon Paper Industries Co., Ltd.
    Inventors: Masaki Kishimoto, Yoshiaki Ishino, Yasuaki Matsumori
  • Publication number: 20210198111
    Abstract: An object of the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2200 m2/g; a pore volume ranging from 0.20 to 1.20 cm3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; and a sheet density ranging from 0.030 to 0.200 g/cm3.
    Type: Application
    Filed: December 16, 2020
    Publication date: July 1, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Daisuke IMAI, Yoshihide WATANABE, Yuu TAKATA, Shunsuke OZAWA, Chie YOSHIDA, Kenichi FUJINO
  • Patent number: 11046844
    Abstract: Provided is a modified polyolefin resin that is excellent in adhesion to nonpolar substrates such as a polyolefin substrate, and excellent in stability in an alcohol solvent. In the modified polyolefin resin, the following polymer (A) is grafted on the following resin (B). Polymer (A): a polymer including at least one constitutional unit selected from the group consisting of a constitutional unit derived from an ?,?-unsaturated carboxylic acid and a constitutional unit derived from a derivative of an ?,?-unsaturated carboxylic acid, and having a hydroxyl value in a range of 10 mgKOH/g or larger and 200 mgKOH/g or smaller. Resin (B): a polyolefin resin or a modified product thereof.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: June 29, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru Kono, Minoru Yada, Naosuke Komoto
  • Publication number: 20210179738
    Abstract: Oxidized cellulose nanofibers wherein an aqueous dispersion of the oxidized cellulose nanofibers which has undergone concentration adjustment has a retention of a viscosity of 50% or higher measured immediately after 30-minute stirring with Disper at a rotation speed of 1,000 rpm, with respect to the viscosity of the aqueous dispersion of the oxidized cellulose nanofibers measured immediately after the concentration adjustment.
    Type: Application
    Filed: August 21, 2019
    Publication date: June 17, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Makoto MATSUMOTO, Takeshi NAKAYAMA, Naoyuki TAMURA
  • Patent number: 11014703
    Abstract: A paper container includes a body front panel (5), a body left side panel (6), a body right side panel (8), and a body back panel (7), which are contiguous through body vertical folding lines (1), (2), (3), and (4). A vertical direction sealing panel (25) is configured to form a quadrangular tubular body (26). The body vertical folding line (1) and the body vertical folding line (2) are approximately symmetrical bent lines bent toward a center of the body front panel (5), and the body vertical folding line (3) through which the body back panel and the body left side panel are contiguous with each other and the body vertical folding line (4) through which the body back panel and the body right side panel are contiguous with each other are approximately symmetrical bent lines bent toward a center of the body back panel.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: May 25, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kouya Nakamura, Kazuhide Onomura, Eiichi Asoi
  • Patent number: 10988549
    Abstract: A method for producing a dry solid of cellulose nanofiber, the method comprising (A) preparing a dispersion in which cellulose nanofiber with an average fiber diameter of 2 to 500 nm is dispersed in a mixed solvent of water and a water-soluble organic solvent; and (B) drying the dispersion.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: April 27, 2021
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeshi Nakatani, Shinji Sato
  • Publication number: 20210102054
    Abstract: A resin composition can be used as a raw material of a primer, and capable of superior solution stability, adhesion to a non-polar substrate, and/or chipping resistance in a coating film formed from the composition.
    Type: Application
    Filed: February 28, 2019
    Publication date: April 8, 2021
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Masaru KONO, Hitomi ABE, Junichi HAYAKAWA, Minoru YADA, Naosuke KOMOTO