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
  • Publication number: 20210301053
    Abstract: A cycloolefin ring-opened copolymer including a structural unit derived from a monocyclic olefin and a structural unit derived from a norbornene compound, wherein a difference (?Tg) between an extrapolated glass transition ending temperature (Teg) and an extrapolated glass transition initiating temperature (Tig) obtained according to JIS K7121 is 30° C. or less, and a weight average molecular weight (Mw) is 50,000 to 1,000,000 is provided.
    Type: Application
    Filed: June 24, 2019
    Publication date: September 30, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yasuo TSUNOGAE, Shingo OKUNO
  • Publication number: 20210269585
    Abstract: A ring-opened copolymer composition comprising 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 is provided. 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: Application
    Filed: July 4, 2019
    Publication date: September 2, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yasuo TSUNOGAE, Shingo OKUNO
  • Publication number: 20210230357
    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: Application
    Filed: April 11, 2019
    Publication date: July 29, 2021
    Applicant: ZEON CORPORATION
    Inventors: Yasuo TSUNOGAE, Shingo OKUNO
  • 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
  • Publication number: 20200231744
    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: Application
    Filed: March 16, 2018
    Publication date: July 23, 2020
    Applicant: ZEON CORPORATION
    Inventors: Hiroyuki NITADORI, Shingo OKUNO, Yasuo TSUNOGAE
  • Publication number: 20200223979
    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: Application
    Filed: September 10, 2018
    Publication date: July 16, 2020
    Applicant: ZEON CORPORATION
    Inventor: Yasuo TSUNOGAE
  • Publication number: 20200055975
    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: Application
    Filed: October 25, 2017
    Publication date: February 20, 2020
    Applicant: ZEON CORPORATION
    Inventors: Yasuo TSUNOGAE, Shingo OKUNO, Hiroyuki NITADORI
  • Publication number: 20190367726
    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: Application
    Filed: March 16, 2018
    Publication date: December 5, 2019
    Applicant: ZEON CORPORATION
    Inventors: Shingo OKUNO, Yasuo TSUNOGAE
  • Publication number: 20190330415
    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: Application
    Filed: August 16, 2017
    Publication date: October 31, 2019
    Applicant: 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
  • Publication number: 20190256692
    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: Application
    Filed: October 25, 2017
    Publication date: August 22, 2019
    Applicant: ZEON CORPORATION
    Inventors: Yasuo TSUNOGAE, Shingo OKUNO, Hiroyuki NITADORI