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).

  • 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: 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: 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: 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
  • Patent number: 10710337
    Abstract: A metal and/or ceramic microlattice structure, comprising an alternation of first layers and of second layers formed by tubes, and interlocking with each other in order to form open loops cooperating two by two in order to form nodes of an articulated/ball-joint nature.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: July 14, 2020
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Olivier Dellea, Olivier Lebaigue, François Tardif
  • 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: 20200023614
    Abstract: A metal and/or ceramic microlattice structure, comprising an alternation of first layers and of second layers formed by tubes, and interlocking with each other in order to form open loops cooperating two by two in order to form nodes of an articulated/ball-joint nature.
    Type: Application
    Filed: February 6, 2019
    Publication date: January 23, 2020
    Inventors: Olivier Dellea, Olivier Lebaigue, François Tardif
  • 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
  • Patent number: 9701776
    Abstract: The present invention provides a random copolymer that is used for manufacturing a rubber having high fracture strength and excellent low loss properties (low heat generation properties) and that includes randomly arranged monomer units of a conjugated diene compound and of a non-conjugated olefin, a rubber composition containing the random copolymer, a cross-linked rubber composition obtained by crosslinking the rubber composition, and a tire manufactured by using the rubber composition or the cross-linked rubber composition. A copolymer of a conjugated diene compound and a non-conjugated olefin includes a random copolymer having randomly arranged monomer units of the conjugated diene compound and of the non-conjugated olefin, which random copolymer contains, by at least 5 mol %, alternate bonding units of the conjugated diene compound and the non-conjugated olefin in a unit derived from the non-conjugated olefin.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: July 11, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Shojiro Kaita, Olivier Tardif, Junko Matsushita
  • Patent number: 9670302
    Abstract: Provided is a copolymer of a conjugated diene compound and a non-conjugated olefin, the copolymer being a tapered copolymer including: at least one of a block sequence including monomer units of the conjugated diene compound and a block sequence including monomer units of the non-conjugated olefin; and a random sequence including randomly arranged monomer units of the conjugated diene compound and monomer units of the non-conjugated olefin.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: June 6, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yasuo Horikawa, Shojiro Kaita, Olivier Tardif, Junko Matsushita
  • Publication number: 20170101500
    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: Application
    Filed: February 24, 2015
    Publication date: April 13, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Olivier TARDIF, Shigeki OISHI
  • Publication number: 20170073450
    Abstract: A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, is characterized in that: 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 50 mol %; 0 mol % <crystal content of the non-conjugated olefin portion 20 mol %; and 0% <degree of crystallinity of the non-conjugated olefin portion 40%. Vulcanized rubber having high fracture resistance and high crack resistance (thus a rubber composition and a tire each using the vulcanized rubber and having such excellent physical properties) can be manufactured from the multiblock polymer.
    Type: Application
    Filed: February 24, 2015
    Publication date: March 16, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Madoka KIMURA, Yasuo HORIKAWA, Olivier TARDIF
  • Patent number: 9399689
    Abstract: The present invention provides a method for synthesizing a polybutadiene more efficiently and stably which is possible to obtain a rubber composition and a tire excellent in durability (fracture resistance, wear resistance and crack growth resistance). A method for producing a polybutadiene, where a butadiene monomer is polymerized with the existence of rare-earth element compounds represented by the following formula (i): M-(NQ)1(NQ)2(NQ)3??(i) (in the formula, M is at least one selected from lanthanides, scandium and yttrium; (NQ)1, (NQ)2 and (NQ)3 are amide groups which may be the same or different to each other, and have M-N bonds).
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 26, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Satoru Tamaki, Olivier Tardif
  • Patent number: 9346907
    Abstract: This invention relates to a method for producing a copolymer of a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound having a high cis-1,4 bond content of a conjugated diene compound portion, and more particularly to a method for producing a copolymer characterized by comprising a step of polymerizing a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound in the presence of a polymerization catalyst composition including at least one complex selected from a metallocene complex represented by the following general formula (I): (wherein M is a lanthanoid element, scandium or yttrium, and CpR is independently a non-substituted or substituted indenyl, and Ra-Rf are independently an alkyl group having a carbon number of 1-3 or a hydrogen atom, and L is a neutral Lewis base, and w is an integer of 0-3) and so on.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: May 24, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shojiro Kaita, Olivier Tardif, Yasuo Horikawa
  • Patent number: 9266978
    Abstract: Disclosed is a method of manufacturing a copolymer of a conjugated diene compound and an olefin other than the conjugated diene compound, where a conjugated diene compound and an olefin other than the conjugated diene compound is copolymerized in the presence of a polymerization catalyst composition containing components: (A) a rare earth element compound or a reactant of the rare earth element compound and a Lewis base; and (B) at least one selected from a group consisting of an ionic compound (B-1) composed of a non-coordinating anion and a cation, an aluminoxane (B-2), and at least one kind of halogen compound (B-3) selected from among a Lewis acid, a complex compound of a metal halide and a Lewis base, and an organic compound containing active halogen (when containing at least one of (B-1) and (B-3), the polymerization catalyst composition further contains component (C): an organometallic compound).
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 23, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shojiro Kaita, Olivier Tardif, Hideki Kitano
  • Patent number: 9212274
    Abstract: The present invention provides a rubber composition that is used for manufacturing a rubber excellent in weather resistance, fracture resistance and crack growth resistance, and that contains a conjugated diene compound/non-conjugated olefin copolymer, a conjugate diene-based polymer and a non-conjugated diene compound/non-conjugated olefin copolymer, a rubber composition for tire side use using the rubber composition for tire sidewall members, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a tire. The rubber composition includes: (A) a conjugated diene compound/non-conjugated olefin copolymer containing a conjugated diene compound-derived unit by at least 40 mol %; (B) a conjugated diene-based polymer; and (C) a non-conjugated diene compound/non-conjugated olefin copolymer containing an ethylene-propylene-diene rubber.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: December 15, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Junko Matsushita, Yasuo Horikawa, Shojiro Kaita, Olivier Tardif