Patents by Inventor Satoshi Kiriki

Satoshi Kiriki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11643522
    Abstract: The present invention provides a polymer composition comprising a polymer and an antioxidant comprising a diarylamine-based compound represented by General Formula (1): where, in General Formula (1), A1 and A2 each independently represent a C6 to C18 arylene group which may have a substituent, and A3 and A4 each independently represent an organic group having a cyclic imide structure which may have a substituent.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: May 9, 2023
    Assignee: ZEON CORPORATION
    Inventors: Mitsuru Sugawara, Satoshi Kiriki, Kazuhiro Ejiri
  • Publication number: 20220127430
    Abstract: The present invention provides a polymer composition comprising a polymer and an antioxidant comprising a diarylamine-based compound represented by General Formula (1): where, in General Formula (1), A1 and A2 each independently represent a C6 to C18 arylene group which may have a substituent, and A3 and A4 each independently represent an organic group having a cyclic imide structure which may have a substituent.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 28, 2022
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kazuhiro EJIRI
  • Patent number: 11254802
    Abstract: The present invention provides a diarylamine-based compound represented by General Formula (1): (where A1 and A2 each independently represent a C6 to C18 arylene group which may have a substituent, and A3 and A4 each independently represent an organic group having a cyclic imide structure which may have a substituent).
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: February 22, 2022
    Assignee: ZEON CORPORATION
    Inventors: Mitsuru Sugawara, Satoshi Kiriki, Kazuhiro Ejiri
  • Patent number: 11203716
    Abstract: Disclosed is a mixture containing polymerizable compounds having Formulas (III) and (IV) wherein Ar1 and Ar2 are divalent aromatic hydrocarbon or heteroaromatic ring group having D1 or D2 as a substituent; D1 and D2 are C1-C20 organic group having at least one aromatic ring selected from the group consisting of aromatic hydrocarbon ring and heteroaromatic ring; A11-A22 and B11-B22 are alicyclic or aromatic group which may have a substituent, Y11-Y22 and L11-L22 are single bond, —O—, —CO—, —CO—O—, —O—CO—, —NR21—CO—, —CO—NR22—, —O—CO—O—, —NR23—CO—O—, —O—CO—NR24— or —NR25—CO—NR26— where R21—R26 are hydrogen or C1-C6 alkyl group; R4—R9 are hydrogen, methyl group or chlorine; one of f and k is integer of 1 to 3 with the other being integer of 0 to 3; g, j, m and q are integer of 1 to 20; and h, i, n and p are 0 or 1.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: December 21, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Kumi Okuyama, Satoshi Kiriki
  • Patent number: 11091452
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: August 17, 2021
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Patent number: 10633319
    Abstract: Provided is a method of efficiently producing a solution composition containing a monoetherified product (III) using a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II). The method of producing a solution composition includes: a step (1) of reacting a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II) in a two-phase system including an alkaline aqueous solution and a hydrophobic ether solvent, and in the absence of a phase transfer catalyst and a hydrophilic organic solvent; and a step (2) of separating and removing an aqueous phase of a two-phase reaction liquid by liquid separation, and washing an organic phase using an aqueous solution containing a neutral inorganic salt and a hydroxide of an alkali metal, or the like.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: April 28, 2020
    Assignee: ZEON CORPORATION
    Inventors: Satoshi Kiriki, Kei Sakamoto
  • Publication number: 20200048213
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Application
    Filed: October 8, 2019
    Publication date: February 13, 2020
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Satoshi KIRIKI, Kumi OKUYAMA, Kanako TAIRA
  • Publication number: 20200002507
    Abstract: The present invention provides a diarylamine-based compound represented by General Formula (1): (where A1 and A2 each independently represent a C6 to C18 arylene group which may have a substituent, and A3 and A4 each independently represent an organic group having a cyclic imide structure which may have a substituent).
    Type: Application
    Filed: February 22, 2018
    Publication date: January 2, 2020
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kazuhiro EJIRI
  • Patent number: 10487065
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 26, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Publication number: 20190276634
    Abstract: Provided is an acrylic polymer composition comprising an acrylic polymer and a polyfunctional organic compound having a urea group, wherein the acrylic polymer composition has less than 50% decrease in molecular weight of the acrylic polymer when heated under conditions of 190° C. and 144 hours in air.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 12, 2019
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kei SAKAMOTO, Kazuhiro EJIRI
  • Publication number: 20190264107
    Abstract: Disclosed is a mixture containing polymerizable compounds having Formulas (III) and (IV) wherein Ar1 and Ar2 are divalent aromatic hydrocarbon or heteroaromatic ring group having D1 or D2 as a substituent; D1 and D2 are C1-C20 organic group having at least one aromatic ring selected from the group consisting of aromatic hydrocarbon ring and heteroaromatic ring; A11-A22 and B11-B22 are alicyclic or aromatic group which may have a substituent, Y11-Y22 and L11-L22 are single bond, —O—, —CO—, —CO—O—, —O—CO—, —NR21—CO—, —CO—NR22—, —O—CO—O—, —NR23—CO—O—, —O—CO—NR24— or —NR25—CO—NR26— where R21-R26 are hydrogen or C1-C6 alkyl group; R4-R9 are hydrogen, methyl group or chlorine; one of f and k is integer of 1 to 3 with the other being integer of 0 to 3; g, j, m and q are integer of 1 to 20; and h, i, n and p are 0 or 1.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 29, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Kumi OKUYAMA, Satoshi KIRIKI
  • Patent number: 10329247
    Abstract: The present invention relates to: a polymerizable compound represented by a formula (I); a polymerizable composition comprising the polymerizable compound and an initiator; a polymer obtained by polymerizing the polymerizable compound or the polymerizable composition; and an optically anisotropic article comprising the polymer [in the formula, Y1 to Y8 are a chemical single bond, —O—, —O—C(?O)—, —C(?O)—O—, or the like; G1 and G2 are a divalent aliphatic group having 1 to 20 carbon atoms, or the like; Z1 and Z2 are an alkenyl group having 2 to 10 carbon atoms, or the like; A1 is a tetravalent aromatic group, or the like; A2 and A3 are a divalent alicyclic hydrocarbon group having 3 to 30 carbon atoms, or the like; A4 and A5 are a divalent aromatic group having 4 to 30 carbon atoms, or the like; Ax1 and Ax2 are an organic group having 2 to 30 carbon atoms that includes an aromatic ring, or the like; Ay1 and Ay2 are a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or the like; Q1 and Q2 are a hydrogen
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 25, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama
  • Publication number: 20190112467
    Abstract: Provided is an acrylic polymer composition comprising an acrylic polymer and a polyfunctional organic compound represented by the following general formula (1): (in the general formula (1), R4 and R2 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, R3 and R4 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms, and k is an integer of 1 or larger).
    Type: Application
    Filed: March 22, 2017
    Publication date: April 18, 2019
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kei SAKAMOTO, Kazuhiro EJIRI
  • Publication number: 20190112466
    Abstract: Provided is an acrylic polymer composition comprising an acrylic polymer and a polyfunctional organic compound having an amide group, wherein the cross-linkable acrylic polymer composition has less than 50% decrease in molecular weight of the acrylic polymer when heated under conditions of 190° C. and 144 hours in air.
    Type: Application
    Filed: March 22, 2017
    Publication date: April 18, 2019
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kei SAKAMOTO, Kazuhiro EJIRI
  • Publication number: 20190106552
    Abstract: Provided is an acrylic polymer composition comprising an acrylic polymer and a polyfunctional organic compound represented by the following general formula (1): (in the general formula (1), R4 and R2 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; R3 and R4 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 10 carbon atoms; and k is an integer of 1 or larger).
    Type: Application
    Filed: March 22, 2017
    Publication date: April 11, 2019
    Applicant: ZEON CORPORATION
    Inventors: Mitsuru SUGAWARA, Satoshi KIRIKI, Kei SAKAMOTO, Kazuhiro EJIRI
  • Publication number: 20190077738
    Abstract: Provided is a method of efficiently producing a solution composition containing a monoetherified product (III) using a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II). The method of producing a solution composition includes: a step (1) of reacting a hydroquinone compound (I) and a hydroxyl group-containing etherifying agent (II) in a two-phase system including an alkaline aqueous solution and a hydrophobic ether solvent, and in the absence of a phase transfer catalyst and a hydrophilic organic solvent; and a step (2) of separating and removing an aqueous phase of a two-phase reaction liquid by liquid separation, and washing an organic phase using an aqueous solution containing a neutral inorganic salt and a hydroxide of an alkali metal, or the like.
    Type: Application
    Filed: March 1, 2017
    Publication date: March 14, 2019
    Applicant: ZEON CORPORATION
    Inventors: Satoshi KIRIKI, Kei SAKAMOTO
  • Patent number: 10227292
    Abstract: A polymerizable compound, a polymerizable composition, and a polymer, which have a low melting point at a practical level and exhibit excellent solubility in a general-purpose solvent, can be produced at low cost. The polymerizable compound, polymerizable composition, and polymer can produce an optical film, which exhibits excellent transparency and achieves uniform conversion of polarized light over a wide wavelength band, and an optically anisotropic article. The polymerizable compound is represented by formula (I).
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: March 12, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Sanuki
  • Publication number: 20190062289
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article.
    Type: Application
    Filed: October 31, 2018
    Publication date: February 28, 2019
    Applicant: ZEON CORPORATION
    Inventors: Kei SAKAMOTO, Satoshi KIRIKI, Kumi OKUYAMA, Kanako TAIRA
  • Patent number: 10173992
    Abstract: A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article. A carbonyl compound is useful as a raw material for producing the polymerizable compound. (In the formula (I), Y1 to Y8 represent —C(?O)—O—, G1 and G2 represent a C1-20 divalent linear aliphatic group, Z1 and Z2 represent a C2-10 alkenyl group that is unsubstituted, or substituted with a halogen atom, Ax represents a C2-30 organic group with at least one aromatic ring, Ay represents a hydrogen atom or C1-20 alkyl group, A1 represents a trivalent aromatic group, A2 and A3 represent a C3-30 divalent alicyclic hydrocarbon group, A4 and A5 represent a C6-30 divalent aromatic group or the like, and Q1 represents a hydrogen atom.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: January 8, 2019
    Assignee: ZEON CORPORATION
    Inventors: Kei Sakamoto, Satoshi Kiriki, Kumi Okuyama, Kanako Taira
  • Patent number: 9951247
    Abstract: The present invention pertains to: a polymerizable composition comprising a cycloolefin-based monomer represented by a formula (I), and a polymerization catalyst, wherein R1 is a hydrocarbon group having 1 to 10 carbon atoms, a halogen atom, etc, m is an integer from 0 to 6n+6, and n is an integer from 1 to 3. As a result of the present invention, a polymerizable composition that is useful as a material for producing a cycloolefin-based resin formed article that exhibits excellent adhesion to a metal, a cycloolefin-based polymer obtained from the polymerizable composition, a cycloolefin-based resin formed article, and a laminate that includes a metal foil and a cycloolefin-based resin layer that is situated adjacent to the metal foil are provided.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: April 24, 2018
    Assignee: ZEON CORPORATION
    Inventors: Mitsuteru Endo, Satoshi Kiriki, Yasuo Tsunogae