Patents by Inventor Yasuo Tsunogae

Yasuo Tsunogae 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: 11981773
    Abstract: A ring-opened copolymer including structural units derived from a norbornene compound having a specific structure and structural units derived from a monocyclic olefin, wherein the proportion of the structural units derived from a norbornene compound is 25 to 90 wt % and the proportion of the structural units derived from a monocyclic olefin is 10 to 75 wt % relative to the total repeating structural units in the ring-opened copolymer, the weight average molecular weight of the ring-opened copolymer is 100,000 to 1,000,000, and the cis/trans ratio of the ring-opened copolymer is 0/100 to 50/50.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: May 14, 2024
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno
  • Patent number: 11718709
    Abstract: A ring-opened copolymer composition has a ring-opened copolymer containing structural unit derived from a norbornene compound represented by general formula (1) below and structural unit derived from a monocyclic olefin, wherein a content of a norbornene compound represented by general formula (1) is 1 ppm by weight or more and 1000 ppm by weight or less based on the ring-opened copolymer, wherein R1 to R4 are each a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or a substituent containing a halogen atom, a silicon atom, an oxygen atom or a nitrogen atom, and R2 and R3 may be bonded to each other to form a ring, and “m” is 0 or 1.
    Type: Grant
    Filed: July 4, 2019
    Date of Patent: August 8, 2023
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno
  • Patent number: 11535696
    Abstract: A crosslinkable composition containing: a liquid monocyclic olefin ring-opened polymer (A) having a reactive group at a polymer chain end thereof and a weight-average molecular weight (Mw) of 1,000 to 50,000; and a crosslinkable compound (B) having, in the molecule, two or more functional groups reactive with the reactive group at the polymer chain end of the monocyclic olefin ring-opened polymer (A).
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: December 27, 2022
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno, Hiroyuki Nitadori
  • Patent number: 11390709
    Abstract: A liquid cyclopentene ring-opened copolymer includes a monomer unit derived from cyclopentene and a monomer unit derived from a norbornene compound, the monomer unit derived from cyclopentene being present in an amount of 60 to 95 wt %, the liquid cyclopentene ring-opened copolymer having a hydroxyl group-terminated copolymer chain and having a melt viscosity at 25° C. of less than 500 Pa·s, which is measured using a B-type viscometer.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: July 19, 2022
    Assignee: ZEON CORPORATION
    Inventor: Yasuo Tsunogae
  • Patent number: 11332610
    Abstract: A rubber composition that contains 0.1 to 50 parts by weight of an organic peroxide with respect to 100 parts by weight of a cyclopentene ring-opening polymer.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: May 17, 2022
    Assignee: ZEON CORPORATION
    Inventors: Shingo Okuno, Yasuo Tsunogae
  • Patent number: 11286339
    Abstract: A cyclopentene ring-opening copolymer having a branch structure contains a structure in which at least four cyclopentene ring-opening polymer chains are linked via a branch-structural unit. At least part of the cyclopentene ring-opening polymer chains is terminally modified.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: March 29, 2022
    Assignee: ZEON CORPORATION
    Inventors: Hiroyuki Nitadori, Shingo Okuno, Yasuo Tsunogae
  • Patent number: 11267956
    Abstract: A rubber composition containing: a solid rubber (A) having a weight-average molecular weight (Mw) of 100,000 or more; and a liquid monocyclic olefin ring-opened polymer (B) having a weight-average molecular weight (Mw) of 1,000 to 50,000, wherein a proportion of the liquid monocyclic olefin ring-opened polymer (B) is 1 to 100 parts by weight per 100 parts by weight of the solid rubber (A).
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 8, 2022
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno, Hiroyuki Nitadori
  • Patent number: 11192975
    Abstract: A crosslinked rubber is produced by crosslinking a polymer composition containing 100 parts by weight of a rubber component containing a cyclopentene ring-opening polymer and 20 to 200 parts by weight of carbon black, wherein, when the crosslinked rubber is subjected to an ozone treatment in which the rubber is maintained at 40° C. and an ozone concentration of 50 pphm for 144 hours under a 20% tensile strain, the crosslinked rubber shows a rate of change in tensile strength before and after ozone treatment of within ±70%.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: December 7, 2021
    Assignee: ZEON CORPORATION
    Inventors: Shingo Okuno, Yasuo Tsunogae
  • Patent number: 10774174
    Abstract: A crosslinked rubber is a member for use in an environment at ?10° C. or less produced by crosslinking a polymer composition containing 20 to 200 parts by weight of carbon black with respect to 100 parts by weight of a rubber component containing a monocyclic olefin ring-opening polymer having a proportion of cis bond of a structural unit derived from a monocyclic olefin of 45 to 95%.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: September 15, 2020
    Assignee: ZEON CORPORATION
    Inventors: Shingo Okuno, Yasuo Tsunogae
  • Patent number: 10435497
    Abstract: [Problem] To provide a cyclopentene ring-opening copolymer used in a rubber composition for tires having excellent wet grip performance and low heat buildup; and a method for producing the cyclopentene ring-opening copolymer. To further provide a rubber composition obtained by using the cyclopentene ring-opening copolymer. [Solution] This cyclopentene ring-opening copolymer comprises cyclopentene and a cyclic olefin containing an aromatic ring; the content of the aromatic ring with respect to the total weight of the copolymer is 10 to 40 wt %; and the weight average molecular weight (Mw) is 200,000 to 1,000,000. The cyclopentene ring-opening copolymer alternatively comprises cyclopentene and a norbornene compound; the weight ratio of cyclopentene-derived structural units to all repeating structural units in the copolymer is 40 to 90 wt %, and the weight ratio of norbornene compound-derived structural units is 10 to 60 wt %; and the weight average molecular weight (Mw) is 200,000 to 1,000,000.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 8, 2019
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Takeshi Sugimura
  • Patent number: 10400060
    Abstract: A cyclopentene ring-opening polymer having, at a polymer chain end, a structure where a polymer chain and a group containing an alkoxysilyl group are bonded through —NH— and having a weight average molecular weight of 100,000 to 1,000,000, wherein the structure is a structure represented by the following general formula (1): pCP—Y1-NH—Y2-Si(OR1)a(R2)3-a??(1) where, in the general formula (1), pCP represents a cyclopentene ring-opening polymer chain, Y1 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms, each of R1 and R2 represents a hydrocarbon group having 1 to 20 carbon atoms, Y2 represents a bivalent hydrocarbon group having 1 to 20 carbon atoms in which —NH— may be interposed, and “a” is an integer of 1 to 3.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: September 3, 2019
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Fumiaki Bando
  • Patent number: 10344124
    Abstract: The present invention is a polyether-based polymer composition includes: a polyether-based polymer including an oxirane monomer unit and having one cationic group substantially only at one terminal of a polymer chain, and a nanocarbon material. The polyether-based polymer composition of the present invention can be suitably used, for example, as a bucky gel or as a master batch for preparing a nanocarbon material aqueous dispersion in which a nanocarbon material is favorably dispersed.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 9, 2019
    Assignee: ZEON CORPORATION
    Inventors: The Ban Hoang, Keisuke Ohta, Shigetaka Hayano, Yasuo Tsunogae
  • Patent number: 10072101
    Abstract: A cycloolefin rubber having a weight average molecular weight of 100,000 to 800,000, having a silyl group at the polymer chain end, and containing a fatty acid ester of a polyvalent alcohol. A cycloolefin rubber excellent in processability at the time of blending and kneading and excellent in low heat buildup property can be provided.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 11, 2018
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Shingo Okuno, Naoaki Kuramoto
  • 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
  • Publication number: 20180016391
    Abstract: The present invention is a polyether-based polymer composition includes: a polyether-based polymer including an oxirane monomer unit and having one cationic group substantially only at one terminal of a polymer chain, and a nanocarbon material. The polyether-based polymer composition of the present invention can be suitably used, for example, as a bucky gel or as a master batch for preparing a nanocarbon material aqueous dispersion in which a nanocarbon material is favorably dispersed.
    Type: Application
    Filed: February 26, 2016
    Publication date: January 18, 2018
    Applicant: ZEON CORPORATION
    Inventors: The Ban Hoang, Keisuke Ohta, Shigetaka Hayano, Yasuo Tsunogae
  • Patent number: 9469612
    Abstract: A polyether compound containing oxirane monomer units in an average number per molecule of 10 to 100, wherein the polyether compound contains repeating units which are represented by the general formula (2) as at least part of the oxirane monomer units is provided. According to the present invention, it is possible to provide a polymer material which has suitable fluidity and is excellent in ion conductivity. (R1 to R4 respectively independently indicate a hydrogen atom or C1 to C3 alkyl group, and R2 and R3 may be bonded with each other. Further, X? is an anion which is comprised of 2 to 25 atoms.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 18, 2016
    Assignee: ZEON CORPORATION
    Inventors: Shigetaka Hayano, Yasuo Tsunogae
  • Publication number: 20160002490
    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: Application
    Filed: February 19, 2014
    Publication date: January 7, 2016
    Applicant: ZEON CORPORATION
    Inventors: Mitsuteru Endo, Satoshi Kiriki, Yasuo Tsunogae
  • Publication number: 20160002382
    Abstract: [Problem] To provide a cyclopentene ring-opening copolymer used in a rubber composition for tires having excellent wet grip performance and low heat buildup; and a method for producing the cyclopentene ring-opening copolymer. To further provide a rubber composition obtained by using the cyclopentene ring-opening copolymer. [Solution] This cyclopentene ring-opening copolymer comprises cyclopentene and a cyclic olefin containing an aromatic ring; the content of the aromatic ring with respect to the total weight of the copolymer is 10 to 40 wt %; and the weight average molecular weight (Mw) is 200,000 to 1,000,000. The cyclopentene ring-opening copolymer alternatively comprises cyclopentene and a norbornene compound; the weight ratio of cyclopentene-derived structural units to all repeating structural units in the copolymer is 40 to 90 wt %, and the weight ratio of norbornene compound-derived structural units is 10 to 60 wt %; and the weight average molecular weight (Mw) is 200,000 to 1,000,000.
    Type: Application
    Filed: February 26, 2014
    Publication date: January 7, 2016
    Applicant: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Takeshi Sugimura
  • Patent number: 9045617
    Abstract: There is provided a ring-opening polymer of cyclopentene wherein a cis ratio of the cyclopentene-derived structural units is 30% or more, a weight average molecular weight (Mw) is 100,000 to 1,000,000, and a functional group containing a structure represented by the general formula (1) or (2) is included at an end of the polymer chain. —Y—H??(1) (in the above general formula (1), Y represents an oxygen atom or a sulfur atom.) —NH-Q??(2) (in the above general formula (2), Q represents a hydrogen atom or a hydrocarbon group or a silyl group which may have a substituent group.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: June 2, 2015
    Assignee: ZEON CORPORATION
    Inventors: Yasuo Tsunogae, Yoshihisa Takeyama
  • Patent number: 8889786
    Abstract: A cyclopentene ring-opening polymer which has hydroxy groups at the polymer chain terminal ends is produced, then the hydroxy groups of the cyclopentene ring-opening polymer and isocyanate groups of a compound containing alkoxysilyl groups and isocyanate groups in its molecule are made to react to thereby produce a cyclopentene ring-opening polymer which contains structures at the polymer chain terminal ends where the polymer chains and groups including alkoxysilyl groups are bonded through urethane bond groups and which has a weight average molecular weight of 100,000 to 1,000,000.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: November 18, 2014
    Assignee: Zeon Corporation
    Inventors: Yasuo Tsunogae, Shigetaka Hayano, Takeshi Sugimura