Patents Assigned to Nippon Paper Industries Co., LTD
  • Publication number: 20250002746
    Abstract: The present invention provides a hard coat film having high heat resistance and dimensional stability and being excellent in optical properties. A hard coat film of the present invention is a hard coat film including hard coat layers on both surfaces of a base material film, each hard coat layer containing an ionizing radiation curable resin composition, the hard coat film satisfying the following conditions (I) and (II), and having a maximum value of a heat shrinkage rate of 1.2% or less after the hard coat film is heat-treated at 150° C. to 200° C. for 1 minute to 30 minutes: condition (I): the ionizing radiation curable resin composition contains an acrylic resin including a (meth)acryloyl group; and condition (II): the ionizing radiation curable resin composition contains inorganic fine particles or organic fine particles.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 2, 2025
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yuki SAKAMOTO, Shotaro TOYA, Masahide HASEGAWA
  • Patent number: 12152090
    Abstract: Dry solids of anionically modified cellulose nanofibers with good redispersion are provided by incorporating 5 to 300% by mass of a water-soluble polymer relative to the anionically modified cellulose nanofibers during the preparation of the dry solids of anionically modified cellulose nanofibers.
    Type: Grant
    Filed: February 8, 2023
    Date of Patent: November 26, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeshi Nakatani, Koji Kimura, Shinji Sato
  • Patent number: 12138577
    Abstract: An object is to provide a new form of adsorbent suitable for a high performance canister. An adsorbent including activated carbon is used as the adsorbent for the canister and satisfies the following conditions. P0.2/100 expressed by Equation 1: P0.2/100=X÷Y×100??(Equation 1) is 18% or more, in Equation 1, X represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and Y represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: November 12, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO. LTD.
    Inventors: Daisuke Imai, Yoshihide Watanabe, Yuu Takata, Shunsuke Ozawa, Chie Yoshida
  • Patent number: 12123109
    Abstract: Carboxymethylated cellulose nanofibers in which the degree of carboxymethyl substitution is higher than 0.30 and no more than 0.60, the cellulose type I crystallinity is 60% or higher, and the transmittance of light having a wavelength of 660 nm when the carboxymethylated celluose nanofibers are made into an aqueous dispersion having a solids fraction of 1% (w/v) is 60% or higher.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: October 22, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kazuhiko Inoue, Takeshi Nakatani, Yusuke Tada
  • Patent number: 12116381
    Abstract: From the viewpoint of a decrease in environmental impact in recent years, an object of the present invention is to effectively utilize lignin as a circulative biomass resource having high effect of reducing environmental impact. Specifically, the object is to provide a lignin derivative that can improve the dispersibility of various substances to be dispersed regardless of uses of cements, dyes, oil field drilling mud, and the like. The present invention provides a lignin derivative compound that is a reaction product of a lignin sulfonic acid-based compound with an aromatic water-soluble compound, and a dispersant containing the same. The lignin derivative compound preferably has an anionic functional group and/or a polyalkylene oxide chain.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 15, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takuma Nakamura, Akihiko Nakamura, Sumio Tamura, Kanae Takahashi, Yoshito Nishimori
  • Publication number: 20240322175
    Abstract: This non-aqueous electrolyte secondary cell electrode binder includes at least: a carboxymethyl cellulose which has a carboxymethyl substitution degree per anhydroglucose unit of 0.5-1.2, and a 1 mass % aqueous solution viscosity, measured by a B-type viscometer (30 rpm) at 25° C., of 1,000-20,000 Pa·s and/or a salt thereof; and a borate. The non-aqueous electrolyte secondary cell electrode binder preferably includes the borate in the range of 0.1-20 mass % with respect to 100 mass % of the solid content of the carboxymethyl cellulose or salt thereof.
    Type: Application
    Filed: July 20, 2022
    Publication date: September 26, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takayuki SAKAJIRI, Kazuhiko INOUE, Daisuke NISHIDE
  • Publication number: 20240316529
    Abstract: A problem is to provide a formed adsorber having excellent adsorption and desorption performance for fuel vapor (in particular, n-butane) of a wide concentration range from a low concentration to a high concentration. A formed product including activated carbon fiber, granular activated carbon, and a binder is prepared. A weight ratio of the activated carbon fiber to the granular activated carbon is 5 to 95 parts by weight of the activated carbon fiber to 95 to 5 parts by weight of the granular activated carbon, in a total weight of the activated carbon fiber and the granular activated carbon, a content ratio of the binder in the formed adsorber is 0.3 to 20 parts by weight of the binder to 100 parts by weight of the activated carbon fiber and the granular activated carbon, the granular activated carbon has a total pore volume ranging from 0.90 to 2.50 cm3/g, and the activated carbon fiber has a total pore volume ranging from 0.50 to 1.20 cm3/g.
    Type: Application
    Filed: March 20, 2024
    Publication date: September 26, 2024
    Applicants: NIPPON PAPER INDUSTRIES CO., LTD., FUTABA INDUSTRIAL CO., LTD.
    Inventors: Yoshihide Watanabe, Dongyeon Ryu, Minoru Yada, Takuya Nakagawa, Shogo Minezawa, Masahito Hosoi, Koji Iwamoto, Kyohei Yamaguchi, Tamami Ina
  • Publication number: 20240304821
    Abstract: An organic expander for lead storage batteries contains sulfomethylated kraft lignin. The sulfomethylated kraft lignin has an organic S content of 1.5 to 3.8% by mass.
    Type: Application
    Filed: February 21, 2022
    Publication date: September 12, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Hiroki SHINDO, Yoshito NISHIMORI, Hikaru AIMI, Masanobu KAWAMURA
  • Patent number: 12071499
    Abstract: The present invention has an object to provide a modified polyolefin resin capable of forming a coating film that is excellent in water-resistant adhesiveness under a high temperature condition. The present invention provides a modified polyolefin resin including a graft-modified product in which a component (A) that is a polyolefin resin is graft-modified with a component (B) that is an ?,?-unsaturated carboxylic acid or a derivative thereof, and having a tensile modulus of 250 MPa or higher, and a weight-average molecular weight of 70,000 or more and less than 200,000.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 27, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Ryo Koike, Fumiyasu Sakakibara, Shunji Sekiguchi, Ryuji Doi
  • Patent number: 12071728
    Abstract: A method for manufacturing a paper barrier base material includes a step of applying a water vapor barrier layer coating liquid that contains at least a water vapor barrier resin and a pigment onto a paper base material by a curtain coating method to form a water vapor barrier layer. The water vapor barrier layer coating liquid has a spinnability of 0.07 seconds or more and 0.4 seconds or less at a solid content concentration of 32% by weight and a temperature of 25° C. The method is intended to achieve good stability of a coating liquid and good continuous operability.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 27, 2024
    Assignees: NIPPON PAPER INDUSTRIES CO., LTD., JUJO THERMAL OY
    Inventors: Yuri Oishi, Kenta Watanabe, Satoshi Tsuda, Masashi Okamoto, Hiroshi Koyamoto
  • Publication number: 20240269646
    Abstract: One of problems to be solved is to provide an adsorbing material suitable for canisters and enabling reduction in pressure loss. Another one of the problems to be solved is to provide, using activated carbon fiber, a formed adsorber that is a formed product difficult to be deformed, the formed adsorber serving as an adsorbing material for canisters, the adsorbing material having excellent effects. The formed adsorber for canisters satisfies at least the following conditions (A), (B), and (C). (A) The formed adsorber is a formed product including activated carbon fiber, granular activated carbon, and a binder. (B) A weight ratio of the activated carbon fiber to the granular activated carbon in a total weight of the activated carbon fiber and the granular activated carbon is 5 to 95 parts by weight of the activated carbon fiber to 95 to 5 parts by weight of the granular activated carbon. (C) A weight ratio of the binder in the formed adsorber is 0.
    Type: Application
    Filed: March 27, 2024
    Publication date: August 15, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yoshihide WATANABE, Daisuke IMAI, Yu TAKATA, Dongyeon RYU
  • Patent number: 12053997
    Abstract: Provided is a thermosensitive recording medium having a sufficient water resistance to moisture and humidity, such as for outdoor use in rainy weather and the like, and also having a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like. As the protective layer comprises a specific silane-modified acrylic resin which is an aqueous emulsion of core-shell type p articles, in a thermosensitive recording medium having a thermosensitive recording layer on a substrate and a protective layer on the thermosensitive recording layer, the thermosensitive re cording medium has a sufficient water resistance and also has a superior color developing sensitivity, print image quality when printing at high speed, ink fixability and solvent resistance and the like.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: August 6, 2024
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Kenji Hirai, Yoshimi Midorikawa, Yuka Murata, Kentaro Kawasaki
  • Patent number: 12049522
    Abstract: A powder that contains carboxymethylated cellulose nanofibers, said carboxymethylated cellulose nanofibers having a degree of carboxymethyl substitution of 0.50 or less and a cellulose type I crystallinity of 60% or more, and has a median diameter of 10.0 ?m to 150.0 ?m. This powder is suitable usable as an additive.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: July 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Yusuke Tada, Kazuhiko Inoue, Takeshi Nakatani
  • Patent number: 12031016
    Abstract: This dispersion composition contains a water-based medium and a carboxymethyl cellulose having a carboxymethyl substitution degree of 0.20 or more and a cellulose-I crystallinity index of 50% or more, a water-based medium is easily dispersed even by low mixing power, and has a high viscosity.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: July 9, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Kazuhiko Inoue, Hiroyoshi Suzuki, Kasumi Nishigaya, Takeshi Nakatani
  • Patent number: 12024343
    Abstract: A paper inner container for storage of a refilling liquid content, the paper inner container including a body (11), which includes a body front panel (7), a body right side panel (6), a body left side panel (8), and a body back panel (5). A top surface (12) includes: a top surface forming panel (14) which is continuously provided on an upper edge of the body back panel; a top surface formation assisting panel (16), which is continuously provided on an upper edge of the body front panel, and is folded up on a lower side of the top surface forming panel; and right and left side panels (19, 20), which are continuously provided on upper edges of the body right side panel and the body left side panel, and are folded up along with overlapping of the top surface forming panel and the top surface formation assisting panel.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: July 2, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Hideki Okude, Takaharu Noda
  • Patent number: 12006389
    Abstract: A modified polyolefin resin may be capable of obtaining an intended adhesion strength regardless of a kind of a base resin thereof even when graft modification is carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. Such a modified polyolefin resin may be a modified product of a polyolefin resin and satisfying (A) and (B): (A): a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; and (B): a ring-opening degree expressed by formula (1) is 40 or more: ring-opening degree=modification degree K×ring-opening rate R??(1), wherein, in formula (1), the modification degree K is a grafting weight (% by weight) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: June 11, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu Ono, Kei Kondo, Koji Kimura, Takato Takenaka, Yuuko Nahara, Shunji Sekiguchi
  • Publication number: 20240166833
    Abstract: A hard coat film having high heat resistance and being excellent in optical properties, hardness, and adhesiveness with hard coat layers. The hard coat film includes hard coat layers on both surfaces of a base material film, and each hard coat layer contains an ionizing radiation curable resin composition. The hard coat film satisfies the following conditions (I), (II), and (III): condition (I): the ionizing radiation curable resin composition contains an acrylic resin including a (meth)acryloyl group; condition (II): the ionizing radiation curable resin composition contains inorganic fine particles or organic fine particles; and condition (III): a peak area ratio 1 ((A/B)×100) is 40% or more (wherein in an infrared spectroscopy spectrum measurement of the ionizing radiation curable resin composition being uncured, A denotes a peak area appearing at 1000 cm?1 to 1120 cm?1, and B denotes a peak area appearing at 1650 cm?1 to 1800 cm?1).
    Type: Application
    Filed: March 29, 2022
    Publication date: May 23, 2024
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shin SAITO, Shotaro TOYA, Masahide HASEGAWA
  • Patent number: 11970603
    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: Grant
    Filed: July 22, 2019
    Date of Patent: April 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Minoru Yada, Naosuke Komoto
  • Patent number: 11970593
    Abstract: The present invention provides a hard coat film having excellent adhesion to a hard coat layer when a cycloolefin polymer film is used as a base material. The hard coat film of the present invention comprises a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film through a primer layer. This primer layer contains a modified polyolefin resin in which a polyolefin resin is graft-modified with an ?,?-unsaturated carboxylic acid or a derivative thereof, and a (meth)acrylic acid ester. In this modified polyolefin resin, the graft weight of the ?,?-unsaturated carboxylic acid or derivative thereof is 0.4 to 7 wt. % when the amount of the modified polyolefin resin is taken as 100 wt. %.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: April 30, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Takeo Suzuki, Narihiro Ilo, Takashi Ino, Yusuke Sugiyama, Yasuaki Yoshida, Takuya Takahashi, Syunji Sekiguchi
  • Patent number: 11958926
    Abstract: A modified polyolefin resin having an intended adhesion strength to various substrates even when graft modification may be carried out by using an ?,?-unsaturated carboxylic acid derivative having a cyclic structure. The modified polyolefin resin may be a modified product of a polyolefin resin and satisfies conditions (A) to (C): condition (A)—a modifying component includes an ?,?-unsaturated carboxylic acid derivative having a cyclic structure; condition (B)—a ring-opening degree expressed by formula (1) is 40 or more; and condition (C)—the polyolefin resin includes an ethylene structural unit, ring-opening degree=modification degree K×ring-opening rate R??(1) wherein, in the formula (1), the modification degree K is a grafting weight (wt. %) of the ?,?-unsaturated carboxylic acid derivative, and the ring-opening rate R is a ring-opening rate (%) of the cyclic structure in the ?,?-unsaturated carboxylic acid derivative.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 16, 2024
    Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isamu Ono, Kei Kondo, Koji Kimura, Takato Takenaka, Yuuko Nahara, Shunji Sekiguchi