Patents by Inventor Katsunari Inagaki

Katsunari Inagaki 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: 20200216578
    Abstract: The invention relates to a method for producing a modified conjugated diene-based polymer, comprising a step of reacting an organometallic compound with a unit based on a modifying agent, in a conjugated diene-based polymer that has a unit based on a conjugated diene compound-containing monomer and a unit based on a modifying agent having a silicon atom, tin atom, germanium atom or phosphorus atom.
    Type: Application
    Filed: August 4, 2017
    Publication date: July 9, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Hiroshi AOSHIMA, Masako IMAI, Katsunari INAGAKI
  • Patent number: 9315608
    Abstract: A conjugated diene polymer rubber is provided that includes component (A) and component (B) below, component (A) having a content, with the total amount of component (A) and component (B) as 100% by weight, of from 5% to 90% by weight, and component (B) having a content of from 95% to 10% by weight, Component (A): a conjugated diene polymer rubber component modified with a carbonyl group- and substituted amino group-containing compound Component (B): a conjugated diene polymer rubber component modified with a compound represented by formula (IIa) below (R21O)mSi(R22A)nR234-m-n??(IIa) wherein m denotes a number from 1 to 3, n denotes a number from 1 to 3, m+n is from 2 to 4, R21 and R23 denote a hydrocarbyl group, R22 denotes a hydrocarbylene group, A denotes a substituted amino group or an optionally substituted hydrocarbyloxy group, when there are a plurality of R21s the plurality of R21s may be identical to or different from each other, when there are a plurality of R22s the plurality of R22s may be iden
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: April 19, 2016
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toru Fujii, Takuya Sudo, Mayumi Oshima, Katsunari Inagaki
  • Patent number: 8877832
    Abstract: The present invention provides a process for producing a conjugated diene-based polymer comprising polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using the following compounds (I) and (II), as a polymerization initiator component, (I) an organic alkali metal compound (II) a compound represented by the following formula (I) wherein R11 and R12 represent a hydrocarbyl group having 1 to 20 carbon atoms optionally having a substituent.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
  • Patent number: 8815977
    Abstract: The present invention provides a process for producing a conjugated diene-based polymer, comprising polymerizing a monomer component containing a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (1) wherein, R11 represents a hydrocarbylene group having 6 to 100 carbon atoms, R12 and R13 represent a hydrocarbyl group optionally having a substituent, or a trihydrocarbylsilyl group, or R12 and R13 are bonded to represent a hydrocarbylene group optionally having, as a hetero atom, at least one kind atom selected from the atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: August 26, 2014
    Assignee: Sumitomo Chemical Company, Ltd.
    Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
  • Publication number: 20140206811
    Abstract: A conjugated diene polymer rubber is provided that includes component (A) and component (B) below, component (A) having a content, with the total amount of component (A) and component (B) as 100% by weight, of from 5% to 90% by weight, and component (B) having a content of from 95% to 10% by weight, Component (A): a conjugated diene polymer rubber component modified with a carbonyl group- and substituted amino group-containing compound Component (B): a conjugated diene polymer rubber component modified with a compound represented by formula (IIa) below (R21O)mSi(R22A)nR234-m-n??(IIa) wherein m denotes a number from 1 to 3, n denotes a number from 1 to 3, m+n is from 2 to 4, R21 and R23 denote a hydrocarbyl group, R22 denotes a hydrocarbylene group, A denotes a substituted amino group or an optionally substituted hydrocarbyloxy group, when there are a plurality of R21s the plurality of R21s may be identical to or different from each other, when there are a plurality of R22s the plurality of R22s may be i
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toru FUJII, Takuya SUDO, Mayumi OSHIMA, Katsunari INAGAKI
  • Patent number: 8497334
    Abstract: A conjugated diene polymer comprising a constitutional unit based on a conjugated diene and a constitutional unit based on a compound represented by Formula (1) below, R1Si(OR2)mR3nR4(3-m-n)??(1) wherein m represents 1 or 2; n represents 1 or 2; m+n=2 or 3; R1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond; R2 represents a hydrocarbyl group, and, when there are plural R2s, R2s each may be the same or different; R3 represents an aryl group that may have an oxygen-containing substituent, and, when there are plural R3s, R3s each may be the same or different; and R4 represents an alkyl group or a substituted amino group.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: July 30, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mana Ito, Katsunari Inagaki
  • Patent number: 8436097
    Abstract: A process for producing a modified polymer rubber comprising the steps of: (1) polymerizing a conjugated diene monomer or a combination thereof with an aromatic vinyl monomer in a hydrocarbon solvent, in the presence of an alkali metal catalyst or a specified alkali metal compound, to form an alkali metal end-carrying active polymer, and (2) reacting the alkali metal end-carrying active polymer with a specified isocyanurate compound or a combination thereof with a specified coupling agent in a hydrocarbon solvent.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: May 7, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Katsunari Inagaki, Seiichi Mabe, Mayumi Oshima
  • Patent number: 8367765
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. There is provided a conjugated diene-based polymer having a conjugated diene unit, a monomer unit based on a compound represented by the following formula (1) and a monomer unit based on a compound represented by the following formula (2). wherein R11 represents a hydrogen atom or a hydrocarbyl group, m is 0 or 1, R12 represents a hydrocarbylene group, and X1, X2 and X3 each independently represent a substituted amino group, or a hydrocarbyl group optionally having a substituent, provided that at least one of X1, X2 and X3 is a substituted amino group.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: February 5, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
  • Patent number: 8334339
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and a tensile strength at break can be obtained. There is provided a conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G). V1-S1??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group.) V2-A2??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: December 18, 2012
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
  • Patent number: 8304488
    Abstract: Conjugated diene polymer is provided that comprises a constitutional unit based on a conjugated diene and a constitutional unit based on a compound represented by Formula (1) below: R1Si(—R2-A)mR33-m??(1) wherein m represents an integer of 1 to 3; R1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond; R2 represents a hydrocarbylene group, and, when there are plural R2s, R2s each may be the same or different; A represents a substituted amino group, and, when there are plural A's, A's each may be the same or different; R3 represents a hydrocarbyl group, a substituted hydrocarbyl group or a substituted amino group, and, when there are plural R3s, R3s each may be the same or different.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 6, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toru Fujii, Katsunari Inagaki
  • Patent number: 8299179
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound. V1—S1??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group. V2-A2??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: October 30, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mana Ito, Katsunari Inagaki
  • Patent number: 8293832
    Abstract: A conjugated diene polymer obtained by reacting one end of a conjugated diene polymer having a monomer unit based on a conjugated diene and a monomer unit based on a compound represented by Formula (1) with a compound represented by Formula (2) wherein the content of the monomer unit based on the compound represented by Formula (1) is 0.01 to 20% by weight relative to 100% by weight of the total amount of the monomer unit in the conjugated diene polymer: wherein R11, R12, R21-R25,A, m and n are as defined in the specification.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 23, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mayumi Oshima, Mana Ito, Katsunari Inagaki
  • Patent number: 8278404
    Abstract: There are provided (I) a process for producing a copolymer of ethylene, an ?-olefin having from 3 to 20 carbon atoms and optionally a polyene, which comprises the step of copolymerizing those monomers in a polymerization reactor by feeding the following components (A), (B), (C1) and (D) to the polymerization reactor: (A) a transition metal complex, (B) an organic aluminum compound, (C1) a halogen-containing compound, and (D) a Lewis base, wherein those components are fed to the polymerization reactor without a preliminary contact of (1) the component (A) with the component (B), (2) the component (A) with the component (C1), (3) the component (B) with the component (C1), and (4) the component (B) with the component (D); and (II) a process for producing said copolymer, which comprises the step of copolymerizing those monomers in a polymerization reactor (i) by feeding to the polymerization reactor the components (A), (B), (D), (C2) a halogen-containing compound, which is a derivative of an aryl group-contai
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: October 2, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Jun Kawashima, Katsunari Inagaki, Tatsuo Sassa
  • Publication number: 20120245275
    Abstract: The present invention provides a process for producing a conjugated diene-based polymer comprising adding the following compounds (I) and (II); (I) Organic alkali metal compound; (II) Compound represented by the following formula (I) wherein R11 represents a hydrocarbylene group having 3 to 20 carbon atoms optionally having, as a hetero atom, at least one kind atom selected from an atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom, as a polymerization initiator component to a solution containing at least one kind monomer component and using a hydrocarbon as a solvent, in an order of the compound (I) and the compound (II), and polymerizing a monomer component comprising a conjugated diene-compound and a silicon-containing vinyl compound.
    Type: Application
    Filed: April 6, 2012
    Publication date: September 27, 2012
    Inventors: Mana ITO, Katsunari INAGAKI, Mayumi OSHIMA
  • Publication number: 20120190770
    Abstract: The present invention provides a process for producing a conjugated diene-based polymer comprising polymerizing a monomer component comprising a conjugated diene compound and a silicon-containing vinyl compound using the following compounds (I) and (II), as a polymerization initiator component, (I) an organic alkali metal compound (II) a compound represented by the following formula (I) wherein R11 and R12 represent a hydrocarbyl group having 1 to 20 carbon atoms optionally having a substituent.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 26, 2012
    Inventors: Mana ITO, Katsunari INAGAKI, Mayumi OSHIMA
  • Publication number: 20120190771
    Abstract: The present invention provides a process for producing a conjugated diene-based polymer, comprising polymerizing a monomer component containing a conjugated diene compound and a silicon-containing vinyl compound using a polymerization initiator represented by the following formula (1) wherein, R11 represents a hydrocarbylene group having 6 to 100 carbon atoms, R12 and R13 represent a hydrocarbyl group optionally having a substituent, or a trihydrocarbylsilyl group, or R12 and R13 are bonded to represent a hydrocarbylene group optionally having, as a hetero atom, at least one kind atom selected from the atomic group consisting of a silicon atom, a nitrogen atom and an oxygen atom.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
  • Publication number: 20120041135
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. There is provided a conjugated diene-based polymer having a conjugated diene unit, a monomer unit based on a compound represented by the following formula (1) and a monomer unit based on a compound represented by the following formula (2). wherein R11 represents a hydrogen atom or a hydrocarbyl group, m is 0 or 1, R12 represents a hydrocarbylene group, and X1, X2 and X3 each independently represent a substituted amino group, or a hydrocarbyl group optionally having a substituent, provided that at least one of X1, X2 and X3 is a substituted amino group.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mana ITO, Katsunari INAGAKI, Mayumi OSHIMA
  • Publication number: 20120041136
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and elongation at break can be obtained, a polymer composition containing the conjugated diene-based polymer and a reinforcing agent, and a process for producing the conjugated diene-based polymer. A conjugated diene-based polymer obtained by reacting one end of a polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2) with an alkoxysilane compound. V1-S1 ??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group. V2-A2 ??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mana ITO, Katsunari INAGAKI
  • Publication number: 20120041134
    Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and a tensile strength at break can be obtained. There is provided a conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G). V1-S1??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group.) V2-A2??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 16, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mana ITO, Katsunari INAGAKI, Mayumi OSHIMA
  • Patent number: 8110635
    Abstract: A method for producing a conjugated diene polymer is provided that includes a step of polymerizing a conjugated diene-containing monomer in a hydrocarbon solvent in the presence of an alkali metal catalyst, thus giving a polymer having a catalyst-derived alkali metal at one terminus of a polymer chain comprising a conjugated diene-based monomer unit, and a step of reacting the polymer obtained in the step of polymerizing and a trialkoxysilane compound represented by the formula below. (In the formula, Y and Z independently denote an oxygen atom or a sulfur atom, R1, R2, and R3 independently denote an alkyl group having 1 to 4 carbon atoms, m denotes an integer of 1 to 5, and n denotes an integer of 0 to 5.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: February 7, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Naoaki Maeda, Mayumi Oshima, Katsunari Inagaki