Patents by Inventor Olivier Tardif

Olivier Tardif 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: 11920022
    Abstract: Provided is a rubber composition that can achieve excellent breaking resistance while having high operability. A rubber composition comprises: a rubber component containing a multicomponent copolymer that contains a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit; and at least one selected from an ethylene-? olefin copolymer and an ethylene-aromatic vinyl copolymer each having a number-average molecular weight of 500 to 30,000.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: March 5, 2024
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuhiro Shoda, Olivier Tardif
  • Patent number: 11518831
    Abstract: To provide a method for producing a multicomponent copolymer with which a multicomponent copolymer having excellent rupture strength can be obtained, and a multicomponent copolymer, a rubber composition and a tire having excellent rupture strength. The method is a method for producing a multicomponent copolymer having a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, comprising adding a conjugated diene compound in divided portions into a reactor containing a catalyst and at least one selected from the group consisting of a non-conjugated olefin compound and an aromatic vinyl compound. The multicomponent copolymer is obtained with the production method. The rubber composition comprises the multicomponent copolymer as a rubber component. The tire uses the rubber composition.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: December 6, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shigenaga Takano, Aya Yanagisawa, Olivier Tardif, Yasuo Horikawa
  • Publication number: 20220220238
    Abstract: An object of the present disclosure is to provide a method for manufacturing a copolymer, wherein a crystal content and a vinyl bond content (or a glass transition temperature) of the copolymer can be controlled. Specifically, the present disclosure provides a method for manufacturing a copolymer, wherein the method comprises a process of copolymerizing ethylene with isoprene under the presence of a polymerization catalyst composition containing a half metallocene cation complex represented by following general formula (I) (In formula (I), M represents a lanthanoid element, scandium or yttrium; CpR? represents substituted cyclopentadienyl, substituted indenyl or substituted fluorenyl; X represents hydrogen atom, halogen atom, alkoxy, thiolate, amide, silyl, or a C1-20 monovalent hydrocarbon group; L represents a neutral Lewis base; w represents an integer in the range of 0 to 3; and [B]? represents a non-coordinating anion), wherein CpR? in general formula (I) has at least two substituent groups.
    Type: Application
    Filed: June 5, 2020
    Publication date: July 14, 2022
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shigenaga TAKANO, Olivier TARDIF, Shojiro KAITA
  • Patent number: 11286319
    Abstract: Provided is a method of producing a multicomponent copolymer, in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer. The method of producing a multicomponent copolymer is a method in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer, including a step of copolymerizing the ethylene, the non-conjugated olefin compound, and the conjugated diene compound, in the presence of a polymerization catalyst composition containing a rare earth element compound (component (A)) represented by predetermined formula.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 29, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Olivier Tardif
  • Patent number: 11279785
    Abstract: It is an object of the disclosure to provide a production method for a copolymer in which a copolymer with a high content of cis-1,4 bonds of a conjugated diene portion can be obtained at a high yield even when a cyclic olefin compound is used as a monomer. In order to achieve the object, the present disclosure includes a step of polymerizing a conjugated diene compound and a cyclic olefin compound in the presence of a catalyst composition containing a rare-earth element compound represented by the following formula (I), at least one compound selected from the group consisting of an ionic compound and a halogen compound, a compound represented by the following formula (II), and a coordination compound that can be a ligand: M-(AQ1)(AQ2)(AQ3)??(I) YR1aR2bR3c??(II).
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: March 22, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shigenaga Takano, Shojiro Kaita, Olivier Tardif
  • Patent number: 11214639
    Abstract: An object of the present disclosure is to provide a copolymer excellent in fracture resistance, ozone resistance and wear resistance. In order to achieve the object, the present disclosure provides a copolymer containing at least an ethylene unit, a C4-10 non-conjugated olefin unit and a conjugated diene unit, wherein a content of 3,4 or 1,2-vinyl bond in the conjugated diene unit is equal to or larger than 30 mol %.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: January 4, 2022
    Assignee: Bridgestone Corporation
    Inventors: Olivier Tardif, Aya Yanagisawa
  • Publication number: 20210340363
    Abstract: Provided is a rubber composition that can achieve excellent breaking resistance while having high operability. A rubber composition comprises: a rubber component containing a multicomponent copolymer that contains a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit; and at least one selected from an ethylene-? olefin copolymer and an ethylene-aromatic vinyl copolymer each having a number-average molecular weight of 500 to 30,000.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 4, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuhiro SHODA, Olivier TARDIF
  • Patent number: 11142606
    Abstract: Provide is a polymer that can provide excellent toughness and weather resistance to a rubber composition and a rubber product such as a tire. The multicomponent copolymer contains a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, where a proportion of conjugated diene units bonded to a unit other than a conjugated diene unit out of the total conjugated diene units is 50% or more.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 12, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Olivier Tardif
  • Patent number: 11021595
    Abstract: An object of the present invention is to provide a multicomponent copolymer for use for producing a crosslinked rubber composition and a rubber product excellent in fracture performance (strength and elongation) at high temperatures while maintaining high weather resistance. Further, the invention provides a rubber composition containing the multicomponent copolymer, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a rubber product and a tire using the rubber composition or the crosslinked rubber composition. The multicomponent copolymer of the invention contains a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, wherein the main chain is formed of an acyclic structure alone, the content of the aromatic vinyl unit is 3 mol % or more of the whole multicomponent copolymer, and the content of the non-conjugated olefin unit is more than 44 mol % and less than 97 mol % of the whole multicomponent copolymer.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: June 1, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Olivier Tardif, Yamato Ono
  • Patent number: 11021550
    Abstract: To provide a method for producing a multicomponent copolymer with which a multicomponent copolymer having excellent rupture strength can be obtained, and a multicomponent copolymer, a rubber composition and a tire having excellent rupture strength. The method is a method for producing a multicomponent copolymer having a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, comprising adding continuously or intermittently continuously a conjugated diene compound into a reactor containing a catalyst and at least one selected from the group consisting of a non-conjugated olefin compound and an aromatic vinyl compound. The multicomponent copolymer is obtained with the production method. The rubber composition comprises the multicomponent copolymer as a rubber component. The tire uses the rubber composition.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: June 1, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shigenaga Takano, Aya Yanagisawa, Olivier Tardif, Yasuo Horikawa
  • Publication number: 20210061936
    Abstract: It is an object of the disclosure to provide a production method for a copolymer in which a copolymer with a high content of cis-1,4 bonds of a conjugated diene portion can be obtained at a high yield even when a cyclic olefin compound is used as a monomer.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 4, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shigenaga TAKANO, Shojiro KAITA, Olivier TARDIF
  • Publication number: 20210002399
    Abstract: An object of the present disclosure is to provide a copolymer which is reduced in heat generation in a low strain region and exhibits good workability, while having excellent wear resistance and crack growth resistance. To achieve the object, the present disclosure proposes a copolymer containing at least a non-conjugated olefin unit and a conjugated diene unit, wherein: a content of the non-conjugated olefin unit therein is equal to or larger than 40 mol %; and a degree of crystallinity derived from the non-conjugated olefin unit in the temperature range of 100° C. to 150° C. measured by a differential scanning calorimeter (DSC), is equal to or smaller than 4.0%. The present disclosure also proposes a method for manufacturing the copolymer.
    Type: Application
    Filed: November 29, 2018
    Publication date: January 7, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shigenaga TAKANO, Olivier TARDIF
  • Publication number: 20210002398
    Abstract: Provided is a method of producing a multicomponent copolymer, in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer. The method of producing a multicomponent copolymer is a method in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer, including a step of copolymerizing the ethylene, the non-conjugated olefin compound, and the conjugated diene compound, in the presence of a polymerization catalyst composition containing a rare earth element compound (component (A)) represented by predetermined formula.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 7, 2021
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Olivier TARDIF
  • Publication number: 20200299432
    Abstract: An object of the present disclosure is to provide a copolymer excellent in fracture resistance, ozone resistance and wear resistance. In order to achieve the object, the present disclosure provides a copolymer containing at least an ethylene unit, a C4-10 non-conjugated olefin unit and a conjugated diene unit, wherein a content of 3,4 or 1,2-vinyl bond in the conjugated diene unit is equal to or larger than 30 mol %.
    Type: Application
    Filed: June 4, 2020
    Publication date: September 24, 2020
    Applicant: Bridgestone Corporation
    Inventors: Olivier TARDIF, Aya YANAGISAWA
  • Publication number: 20200239675
    Abstract: A multicomponent copolymer according to the present invention contains a non-conjugated polyene unit, a non-conjugated olefin unit and an aromatic vinyl unit, wherein the content of the aromatic vinyl unit is 5% by mass or more and less than 30% by mass. A crosslinked rubber composition having a high strength, as compared with the case where EPDM is used, while having high weather resistance, a multicomponent copolymer useful for producing a rubber product, and a method for producing the multicomponent copolymer are provided.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 30, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Olivier TARDIF, Yasuo HORIKAWA
  • Publication number: 20200140576
    Abstract: To provide a method for producing a multicomponent copolymer with which a multicomponent copolymer having excellent rupture strength can be obtained, and a multicomponent copolymer, a rubber composition and a tire having excellent rupture strength. The method is a method for producing a multicomponent copolymer having a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, comprising adding continuously or intermittently continuously a conjugated diene compound into a reactor containing a catalyst and at least one selected from the group consisting of a non-conjugated olefin compound and an aromatic vinyl compound. The multicomponent copolymer is obtained with the production method. The rubber composition comprises the multicomponent copolymer as a rubber component. The tire uses the rubber composition.
    Type: Application
    Filed: April 16, 2018
    Publication date: May 7, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shigenaga TAKANO, Aya YANAGISAWA, Olivier TARDIF, Yasuo HORIKAWA
  • Publication number: 20200048380
    Abstract: To provide a method for producing a multicomponent copolymer with which a multicomponent copolymer having excellent rupture strength can be obtained, and a multicomponent copolymer, a rubber composition and a tire having excellent rupture strength. The method is a method for producing a multicomponent copolymer having a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, comprising adding a conjugated diene compound in divided portions into a reactor containing a catalyst and at least one selected from the group consisting of a non-conjugated olefin compound and an aromatic vinyl compound. The multicomponent copolymer is obtained with the production method. The rubber composition comprises the multicomponent copolymer as a rubber component. The tire uses the rubber composition.
    Type: Application
    Filed: October 17, 2019
    Publication date: February 13, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shigenaga TAKANO, Aya Yanagisawa, Olivier Tardif, Yasuo Horikawa
  • Publication number: 20190367654
    Abstract: Provide is a polymer that can provide excellent toughness and weather resistance to a rubber composition and a rubber product such as a tire. The multicomponent copolymer contains a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, where a proportion of conjugated diene units bonded to a unit other than a conjugated diene unit out of the total conjugated diene units is 50% or more.
    Type: Application
    Filed: November 13, 2017
    Publication date: December 5, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo HORIKAWA, Olivier TARDIF
  • Patent number: 10125210
    Abstract: A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, wherein: a structure of the multiblock copolymer includes A-(B-A)x and/or B-(A-B)x, wherein “A” represents a block portion constituted of monomer units of a non-conjugated olefin, “B” represents a block portion constituted of monomer units of a conjugated diene compound, and “x” represents an integer ?1; content of the non-conjugated olefin portion is ?30 mass %; and storage modulus G? at 130° C., measured by rubber process analysis using a rubber process analyzer, i.e. RPA, according to ASTM D6204, is ?20 kPa. It is possible to obtain vulcanized rubber and thus a tire having high fracture resistance and high weather resistance from the multiblock copolymer and a rubber composition derived therefrom.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: November 13, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Olivier Tardif, Shigeki Oishi
  • Publication number: 20180291185
    Abstract: An object of the present invention is to provide a multicomponent copolymer for use for producing a crosslinked rubber composition and a rubber product excellent in fracture performance (strength and elongation) at high temperatures while maintaining high weather resistance. Further, the invention provides a rubber composition containing the multicomponent copolymer, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a rubber product and a tire using the rubber composition or the crosslinked rubber composition. The multicomponent copolymer of the invention contains a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, wherein the main chain is formed of an acyclic structure alone, the content of the aromatic vinyl unit is 3 mol % or more of the whole multicomponent copolymer, and the content of the non-conjugated olefin unit is more than 44 mol % and less than 97 mol % of the whole multicomponent copolymer.
    Type: Application
    Filed: October 14, 2016
    Publication date: October 11, 2018
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuo HORIKAWA, Olivier TARDIF, Yamato ONO