Patents Assigned to Nippon Kayaku Kabushiki
  • Patent number: 10209417
    Abstract: A polarization element, which is obtained from a base material containing a dichromatic dye formed from an azo compound, is characterized in that the single-body transmittance is 35-60%, and a* and b* values, which are acquired for a polarization element or a polarization plate using JIS?Z?8729, have an a* and b* absolute value that is: less than 1 in a single-body transmittance measurement; less than 2 when two sheets of the base material are arranged parallel to the absorbing axis direction and the a* and b* values are measured; and less than 2 when two sheets of the base material are arranged orthogonal to the absorbing axis direction and the a* and b* values are measured.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 19, 2019
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventor: Noriaki Mochizuki
  • Patent number: 10209418
    Abstract: a* and b* values, which define, the hue of a polarization element or a polarization plate using JIS.Z.8729, are adjusted such that the absolute value of the a* and b* values is: less than 1 during a single-body transmittance measurement; less than 2 when two sheets of a base material are arranged parallel, to the absorbing axis direction and the a* and b* values are measured; and less than 2 when two sheets of the base material are arranged orthogonal to the absorbing axis direction and the a* and b* values are measured.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 19, 2019
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventor: Noriaki Mochizuki
  • Publication number: 20190048021
    Abstract: In the present invention, a composition comprising two types of thienothiophene compounds selected from the group consisting of the compounds indicated by formulas (1) to (4) (in formulas (1) to (4), either one of R1 and R2 represents an alkyl group, an aromatic hydrocarbon group having an alkyl group or a heterocyclic group having an alkyl group, and the other represents a hydrogen atom, an aromatic hydrocarbon group, a heterocyclic group or a substituent represented by formula (5) (in formula (5), R3 represents an aromatic hydrocarbon group or a heterocyclic group)) can form an organic thin film which is homogeneous over a large area, and an organic semiconductor device including the organic thin film is capable of exhibiting high mobility.
    Type: Application
    Filed: February 27, 2017
    Publication date: February 14, 2019
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Shunto ARAI, Tatsuo HASEGAWA, Satoru INOUE
  • Publication number: 20190038605
    Abstract: It is an object of the present invention to provide a pharmaceutical composition, which can suppress a reduction in the content of an active ingredient caused by oxidation or decomposition of rapamycin or a derivative thereof, can ensure long-term stability, and has high safety. In the present invention, the inventors have found that (B) a tocopherol derivative and (C) a phospholipid are used in a pharmaceutical formulation comprising rapamycin or a derivative thereof, so that oxidation or decomposition of the rapamycin or a derivative thereof can be suppressed, thereby completing the present invention. The rapamycin or a derivative thereof, and (B) the tocopherol derivative and (C) the phospholipid are preferably in the form of a solid mixture produced by preparing a solution containing these components and then removing the solvent from the solution.
    Type: Application
    Filed: September 14, 2016
    Publication date: February 7, 2019
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Dai KAWAMURA
  • Patent number: 10197913
    Abstract: Provided is a photosensitive resin composition that contains (A) a photobase generator and (B) an alkali-soluble epoxy compound, wherein the photobase generator (A) contains a compound represented by formula (2-1): and the alkali-soluble epoxy compound (B) is an epoxy compound obtained by reacting (c) a polybasic acid anhydride with a product of a reaction between (a) an epoxy compound having two or more epoxy groups in the molecule and (b) a compound having one or more hydroxyl groups and one carboxyl group in the molecule.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 5, 2019
    Assignees: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Koji Arimitsu, Kiwamu Terada
  • Patent number: 10190009
    Abstract: An aqueous black ink composition that contains a colorant represented by formula (1) and one or more colorants (B-a) to (B-t). The ink composition is stable even when stored for a long period of time, has a low chroma and tint-free neutral black-to-gray color even when printing a deep color or light color, has a high printed image density, exhibits no change in hue when printed on different media, and produces a black recorded image having particularly excellent recorded image color development properties, light resistance, ozone gas resistance and moisture resistance.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: January 29, 2019
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Daisuke Ono, Yumi Shiratori, Yasuaki Ishiguro
  • Publication number: 20190022073
    Abstract: It is an object of the present invention to provide a pharmaceutical composition, which can suppress a reduction in the content of an active ingredient caused by oxidation or decomposition of rapamycin or a derivative thereof, can ensure long-term stability, and has high safety. In the present invention, the inventors have found that (B) a salt of an ascorbic acid or a derivative thereof and/or a salt of chelating agent is used in a pharmaceutical formulation comprising rapamycin or a derivative thereof, so that oxidation or decomposition of the rapamycin or a derivative thereof can be suppressed, thereby completing the present invention. The rapamycin or a derivative thereof, and (B) the salt of an ascorbic acid or a derivative thereof and/or the salt of chelating agent are preferably in the form of a solid mixture produced by preparing a solution containing these components and then removing the solvent from the solution.
    Type: Application
    Filed: September 1, 2016
    Publication date: January 24, 2019
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Dai KAWAMURA
  • Publication number: 20190023220
    Abstract: A gas generator includes a plurality of gas discharge openings arranged in a circumferential wall portion along a circumferential direction as not overlapping with each other. The plurality of gas discharge openings consist of one group or two or more groups of first gas discharge openings, one group or two or more groups of second discharge openings, and one group or two or more groups of third gas discharge openings. The gas discharge openings included in each of the groups of first to third gas discharge openings are set to be opened at an identical opening pressure. The second gas discharge openings are higher in opening pressure than the first gas discharge openings and lower in opening pressure than the third gas discharge openings. The gas discharge openings included in each group of gas discharge openings are evenly arranged in rotation symmetry at an angle not greater than 120°.
    Type: Application
    Filed: February 23, 2017
    Publication date: January 24, 2019
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Haruki TAKIZAWA, Shinya UEDA, Satoshi OHSUGI
  • Publication number: 20190015513
    Abstract: It is an object of the present invention to provide a pharmaceutical composition, which can suppress a reduction in the content of an active ingredient caused by oxidation or decomposition of rapamycin or a derivative thereof, can ensure long-term stability, and has high safety. In the present invention, the inventors have found that a tocopherol derivative and an ascorbic acid fatty acid ester are used in combination in a pharmaceutical formulation comprising rapamycin or a derivative thereof, so that oxidation or decomposition of the rapamycin or a derivative thereof can be suppressed, thereby completing the present invention. The rapamycin or a derivative thereof, and the tocopherol derivative and the ascorbic acid fatty acid ester are preferably in the form of a solid mixture produced by preparing a solution containing these components and then removing the solvent from the solution.
    Type: Application
    Filed: August 25, 2016
    Publication date: January 17, 2019
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Dai KAWAMURA
  • Patent number: 10179445
    Abstract: Method for producing an optical member, in which at least two optical substrates, of which at least either has a light shielding portion, are bonded to each other using an ultraviolet ray cured resin composition containing (A) a (meth)acrylate and (B) a photopolymerization initiator, an optical member obtained by the producing method, the use of an ultraviolet ray cured resin composition containing (A) a (meth)acrylate and (B) a photopolymerization initiator, and the ultraviolet ray cured resin composition. A bonded optical member causing little damage to an optical substrate, and exhibiting favorable productivity and excellent cure extent and adherence, for example, a touch panel or a display body unit having an optical substrate having a light shielding portion can be produced by the producing method of the present invention, and an optical member exhibiting high cure extent of resin at a light shielding portion and high reliability can be obtained.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: January 15, 2019
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Daisuke Kobayashi, Hayato Motohashi, Yuichiro Matsuo
  • Patent number: 10167405
    Abstract: An inkjet aqueous pigment dispersion which achieves high pigment concentration, exhibits favorable redispersion properties after drying, and does not exhibit changes in ink properties even when stored for a long time; and an ink composition using the aqueous pigment dispersion. The inkjet aqueous pigment dispersion contains a pigment, a liquid medium, and a polymer dispersion agent which is an A-B block polymer obtained by copolymerization using a mixture of an organic tellurium compound represented by formula (1) and an organic ditellurium compound represented by formula (2) as a polymerization initiator. The monomer for configuring the A block is at least one type of monomer represented by formula (3), and the monomer for configuring the B block is benzyl methacrylate and/or benzyl acrylate.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: January 1, 2019
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Akira Kawaguchi, Akio Kuwahara
  • Publication number: 20180369254
    Abstract: A DDS preparation of a platinum complex, which exhibits a superior antitumor effect required as a medicine and reduced side effects, that is, a clinically usable DDS preparation of a platinum complex, which is conjugated to a polymer carrier that is different from conventional carriers, is desired. Provided is a polymer conjugate of a platinum(II) complex, the polymer conjugate including: a block copolymer having a polyethylene glycol structural moiety and a polyaspartic acid moiety or a polyglutamic acid moiety; a sulfoxide derivative introduced into a side-chain carboxyl group of the block copolymer; and a platinum(II) complex coordinate-bonded to a sulfoxide group of the sulfoxide derivative.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 27, 2018
    Applicant: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaharu Nakamura, Tsuyoshi Fukuda, Ken Yamakawa, Takuya Kato
  • Publication number: 20180375033
    Abstract: The present invention provides a material for photoelectric conversion elements for use in imaging elements which comprises a compound represented by the following formula (1). The material for photoelectric conversion elements for use in imaging elements, which comprises a compound represented by the following formula (1), is used to produce a photoelectric conversion element which is excellent in terms of hole- or electron-leakage prevention, thermal resistance to processing temperatures, transparency to visible light, etc. In formula (1), R1 and R2 each independently represent a substituted or unsubstituted aromatic group.
    Type: Application
    Filed: August 1, 2018
    Publication date: December 27, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Hidenori YAKUSHIJI, Kazuki NIIMI, Ryoutarou MORITA, Tatsuya YAMAMOTO, Toshifumi INOUCHI, Masahiro HAMADA
  • Publication number: 20180370908
    Abstract: The purpose of the present invention is to provide: a novel compound which can generate a base and radical upon the irradiation with an active energy ray; a photopolymerization initiator which comprises the novel compound; and a photosensitive resin composition which contains the photopolymerization initiator, has high sensitivity and excellent storage stability, and can be formed into a cured article that does not have a metal-corrosive property. The novel compound is represented by formula (1): (wherein R1 to R6 independently represent a hydrogen atom, a hydroxy group, an alkoxy group, an organic group other than the aforementioned substituents, or the like; X represents a residue having a structure such that n hydrogen atoms are removed from a saturated hydrocarbon containing a ring structure; and n represents an integer of 1 to 6).
    Type: Application
    Filed: December 7, 2016
    Publication date: December 27, 2018
    Applicants: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kiwamu TERADA, Kazuyoshi YAMAMOTO, Koji ARIMITSU
  • Patent number: 10150871
    Abstract: The present invention relates to an azo compound that is useful as a dichroic pigment used in a polarizing plate having excellent polarizing performance and durability and having little color leakage in a visible light region, and used in a neutral gray polarizing plate for vehicle mounting that uses the aforementioned polarizing plate. More specifically, the invention relates to an azo compound that is represented by formula (1) [In the formula, R1-R4 each independently represent a hydrogen atom, a C1-5 alkyl group, a C1-5 alkoxy group, a sulfo group, or a C1-5 alkoxy group having a sulfo group, X represents an amino group having a substituent, a benzoylamino group having a substituent, a phenylamino group having a substituent, a phenylazo group having a substituent, or a naphthotriazole group having a substituent, m represents 3 or 4, n represents 1 or 2, and p represents 1, 2, or 3.], or to a salt of said compound.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 11, 2018
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co., Ltd.
    Inventors: Takahiro Higeta, Takuto Nishiguchi, Mitsunori Nakamura
  • Patent number: 10126468
    Abstract: This achromatic polarizing plate has a high transmissivity, while expressing an achromatic white color when the absorption axes of the polarizing elements are positioned in parallel, and expressing an achromatic black color when the absorption axes of the polarizing elements are positioned orthogonally to one another. This polarizing element contains at least two specific azo compounds, and the absolute value of the difference between the average transmissivity of 420 nm to 480 nm light and the average transmissivity of 520 nm to 590 nm light is equal to or less than 2.5, and the absolute value of the difference between the average transmissivity of 520 nm to 590 nm light and the average transmissivity of 590 nm to 640 nm light is equal to or less than 2.0.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: November 13, 2018
    Assignees: Nippon Kayaku Kabushiki Kaisha, Polatechno Co. Ltd.
    Inventor: Noriaki Mochizuki
  • Patent number: 10120206
    Abstract: [Problem] The present invention provides eyewear, such as polarized sunglasses, having cholesteric liquid crystal layers, wherein the eyewear has a metallic tone and antiglare properties, minimizes the reduction in light-polarizing element absorptive capability that is associated with circular polarization, and is moreover unaffected by external degrading factors such as sebum, moisture, and salt air. [Solution] This optical film is characterized by being provided with a light-reflecting layer R comprising a cholesteric liquid crystal layer that has right-handed helical orientation, a light-reflecting layer L comprising a cholesteric liquid crystal layer that has left-handed helical orientation, and a polarizing element layer.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 6, 2018
    Assignees: NIPPON KAYAKU KABUSHIKI KAISHA, MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Kouichi Tanaka, Yoshiyuki Yahagi, Hideyoshi Fujisawa, Takuya Gotou, Katsuyuki Murai, Kazuhisa Mitsuhata, Kyousuke Nakamura
  • Publication number: 20180312132
    Abstract: A gas generator includes a housing containing an accommodation space, a gas generating agent, an igniter, and a sealing tape. The housing includes a cylindrical circumferential wall portion including plural gas discharge openings and the plural gas discharge openings are closed by the sealing tape. The plural gas discharge openings include gas discharge openings set to be different from one another in opening pressure so as to be opened stepwise with increase in pressure in the accommodation space as a result of burning of the gas generating agent. A condition of T>1.8 [mm] and SA?60 [mm2] is satisfied where T represents a thickness of a portion of the housing and SA represents a total opening area of the plurality of gas discharge openings. At least one of the plural gas discharge openings is in a shape of an elongated hole.
    Type: Application
    Filed: October 21, 2016
    Publication date: November 1, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Satoshi OHSUGI, Shinya UEDA, Haruki TAKIZAWA
  • Publication number: 20180305566
    Abstract: Disclosed is an ink emulsion composition that, when used as an ink composition, retains a high concentration of a colorant and exhibits good re-dispersibility after drying, and that causes no change in the physical properties of the ink when stored for a long period of time. The ink emulsion composition contains: (A) a dye and/or a pigment; (B) a styrene-(meth)acrylic copolymer; and (C) a compound in an amount of more than 0.18 mass %, the compound (C) being represented by formula (1): where t represents 1 to 5.
    Type: Application
    Filed: October 28, 2016
    Publication date: October 25, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Keijyou SASAKI, Shinsuke SHIMIZU, Shunta MISAWA, Junya MASEKI, Hiroko HIGUCHI
  • Publication number: 20180304848
    Abstract: A gas generator includes a housing, a partition member which divides a space in the housing into a combustion chamber where a gas generating agent is accommodated and a filter chamber where a filter is accommodated, and a sealed container which externally seals the gas generating agent. The filter has a hollow portion which reaches an axial end surface located on a side of the combustion chamber. The sealed container is made of a member relatively low in mechanical strength so as to burst or melt as a result of burning of the gas generating agent. The partition member is made of a member relatively high in mechanical strength such that only a portion opposed to the hollow portion bursts as a result of burning of the gas generating agent to provide a communication hole which allows communication between the combustion chamber and the filter chamber with each other.
    Type: Application
    Filed: October 21, 2016
    Publication date: October 25, 2018
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventor: Takahiro IMAI