Patents by Inventor Christine M. Rademacher

Christine M. Rademacher 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: 10745497
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: August 18, 2020
    Assignee: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Publication number: 20190338052
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Publication number: 20190330403
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Inventors: Christine M. RADEMACHER, Daniel F. GRAVES
  • Patent number: 10400056
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: September 3, 2019
    Assignee: Firestone Polymers, LLC
    Inventors: Christine M. Rademacher, Daniel F. Graves
  • Patent number: 10150869
    Abstract: A method for producing a functionalized polymer, the method comprising the steps of polymerizing conjugated diene monomer, optionally together with a copolymerizable monomer, within a solvent to produce a polymerization mixture including a polymer having a reactive terminus, coupling a portion of the polymer having a reactive terminus with a hydrocarbyloxysiloxane to produce a polymerization mixture including polymer coupled with the hydrocarbyloxysiloxane and residual polymer having a reactive terminues, reacting the residual polymer having a reactive terminus with a functionalizing agent having at least one hydrocarbyloxy functionality to produce a polymerization mixture including a functionalized polymer and the polymer coupled with the hydrocarbyloxysiloxane, and desolventizing the polymerization mixture including the functionalized polymer and the polymer coupled with the hydrocarbyloxysiloxane.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 11, 2018
    Assignee: Firestone Polymers, LLC
    Inventors: Terrence E. Hogan, Mark N. Dedecker, Jessica C. Kurasch, Gabrielle L. Mcintyre, Karen Maglione, Christine M. Rademacher
  • Publication number: 20180291135
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Application
    Filed: June 14, 2018
    Publication date: October 11, 2018
    Inventors: Christine M. RADEMACHER, Daniel F. GRAVES
  • Patent number: 10066035
    Abstract: Embodiments of methods of producing 1,4-polybutadiene comprise polymerizing a solution comprising conjugated diene monomer and organic solvent to yield 1,4-polybutadiene having a cis content of between about 92% to about 98%, a vinyl content of about 1% to about 5%, a trans content of about 1 to about 3%, a molecular weight distribution (MWD) of about 3 to about 5, and a Mooney viscosity (ML1+4) at 100° C. of less than 60. The polymerization achieves over an 80% conversion of the conjugated diene monomer when catalyzed with a catalyst comprising at least one nickel compound, at least one aluminum activator compound, and a mixture of BF3.hexanol and BF3.H2O. For the catalyst, the molar ratio of Ni/H2O is from about 0.05 to about 20 and the molar ratio of BF3/H2O is from about 1.8 to about 500.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: September 4, 2018
    Assignee: Bridgestone Corporation
    Inventors: Zengquan Qin, Christine M. Rademacher
  • Patent number: 10005874
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: June 26, 2018
    Assignee: Bridgestone Corporation
    Inventors: Christine M. Rademacher, Daniel F. Graves
  • Publication number: 20180155460
    Abstract: Metallated aminosilane compounds for use as functional initiators in anionic polymerizations and processes for producing an aminosilane-functionalized polymer using the metallated aminosilane compounds to initiate anionic polymerization of at least one type of anionically polymerizable monomer. Preferred use of the metallated aminosilane compounds results in rubber compositions for use in tires comprising an aminosilane functionalized polymer.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 7, 2018
    Applicant: Bridgestone Corporation
    Inventors: David F. Lawson, Terrence E. Hogan, Christine M. Rademacher, David M. Roggeman, Fuminori Ota
  • Patent number: 9840619
    Abstract: A process for producing a styrene-butadiene diblock copolymer-containing blend that is not an agglomeration, that involves mixing a styrene-butadiene multiblock thermoplastic elastomer solution with a styrene-butadiene diblock copolymer solution. Blends comprising a styrene-butadiene diblock copolymer and a styrene-butadiene multiblock thermoplastic elastomer, which blends are not an agglomeration.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: December 12, 2017
    Assignee: Firestone Polymers, LLC
    Inventors: Daniel F. Graves, Peter W. Boerner, John R. Schreffler, Christine M. Rademacher
  • Publication number: 20170342187
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled, to form a first batch; (ii) allowing the monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C., to form a second batch; (iv) allowing the monomer to polymerize the second batch to fully convert all monomer to form a second block; and (v) charging into the reactor a quenching agent.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 30, 2017
    Inventors: Christine M. RADEMACHER, Daniel F. GRAVES
  • Publication number: 20170335045
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Application
    Filed: August 1, 2017
    Publication date: November 23, 2017
    Inventors: Christine M. RADEMACHER, Daniel F. GRAVES
  • Publication number: 20170291977
    Abstract: The cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding any of a class of morpholine compounds to a catalyst composition that includes a lanthanide metal atom.
    Type: Application
    Filed: October 10, 2015
    Publication date: October 12, 2017
    Applicant: Bridgestone Corporation
    Inventors: Zengquan Qin, James H. Pawlow, Christine M. Rademacher
  • Patent number: 9732178
    Abstract: A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: August 15, 2017
    Assignee: Bridgestone Corporation
    Inventors: Christine M. Rademacher, Daniel F. Graves
  • Publication number: 20170158787
    Abstract: Embodiments of methods of producing 1,4-polybutadiene comprise polymerizing a solution comprising conjugated diene monomer and organic solvent to yield 1,4-polybutadiene having a cis content of between about 92% to about 98%, a vinyl content of about 1% to about 5%, a trans content of about 1 to about 3%, a molecular weight distribution (MWD) of about 3 to about 5, and a Mooney viscosity (ML1+4) at 100° C. of less than 60. The polymerization achieves over an 80% conversion of the conjugated diene monomer when catalyzed with a catalyst comprising at least one nickel compound, at least one aluminum activator compound, and a mixture of BF3.hexanol and BF3.H2O. For the catalyst, the molar ratio of Ni/H2O is from about 0.05 to about 20 and the molar ratio of BF3/H2O is from about 1.8 to about 500.
    Type: Application
    Filed: December 7, 2016
    Publication date: June 8, 2017
    Applicant: Bridgestone Corporation
    Inventors: Zengquan Qin, Christine M. Rademacher
  • Patent number: 9546237
    Abstract: A process for treating a polymer having a hydrolyzable functionality, the process comprising: (i.) providing a polymer having hydrolyzable functionality; (ii.) introducing an alkoxysilane to the polymer, where the alkoxysilane is defined by the formula I ?where R2 is a hydrocarbyl group, R3, R4, and R5 are each independently a hydrocarbyl group or a hydrocarbyloxy group; and (iii.) introducing a silane having a hydrolyzable functionality, where the silane is defined by the formula II where ? is a hydrolyzable group that forms an acidic species upon hydrolysis, where R6, R7, and R8 are each independently a halogen atom, a hydrocarbyl group, a hydrocarboxylate group, or a hydrocarbyloxy group.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: January 17, 2017
    Assignee: Bridgestone Corporation
    Inventors: Christine M. Rademacher, Terrence E. Hogan, Jessica C. Kurasch
  • Patent number: 9499683
    Abstract: A process for treating a polymer having a hydrolyzable functionality, the method comprising: (i.) providing a polymer having hydrolyzable functionality; and (ii.) introducing a stabilizing agent to the polymer, where the stabilizing agent is defined by the formula (I) where ÷ is a hydrolyzable group that forms an acidic species upon hydrolysis, where R2, R3, and R4 are each independently a halogen atom, a hydrocarbyl group, a hydrocarboxylate group, or a hydrocarbyloxy group.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: November 22, 2016
    Assignee: Bridgestone Corporation
    Inventors: Christine M. Rademacher, Terrence E. Hogan, Christopher G. Robertson, Jessica C. Kurasch
  • Publication number: 20160312028
    Abstract: A method for producing a functionalized polymer, the method comprising the steps of polymerizing conjugated diene monomer, optionally together with a copolymerizable monomer, within a solvent to produce a polymerization mixture including a polymer having a reactive terminus, coupling a portion of the polymer having a reactive terminus with a hydrocarbyloxysiloxane to produce a polymerization mixture including polymer coupled with the hydrocarbyloxysiloxane and residual polymer having a reactive terminues, reacting the residual polymer having a reactive terminus with a functionalizing agent having at least one hydrocarbyloxy functionality to produce a polymerization mixture including a functionalized polymer and the polymer coupled with the hydrocarbyloxysiloxane, and desolventizing the polymerization mixture including the functionalized polymer and the polymer coupled with the hydrocarbyloxysiloxane.
    Type: Application
    Filed: December 12, 2014
    Publication date: October 27, 2016
    Applicant: Firestone Polymers, LLC
    Inventors: Terrence E. Hogan, Mark N. Dedecker, Jessica C. Kurasch, Gabrielle L. Mcintyre, Karen Maglione, Christine M. Rademacher
  • Patent number: 9056925
    Abstract: A process for producing a modified conjugated diene based polymer includes a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction takes place at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a silicon atom to which a hydrocarbyloxy group and a reactive group are bonded, to thereby modify the active end, and a step (b) of performing condensation reaction, in the presence of a titanium compound serving as a titanium-based condensation-accelerating agent. A rubber composition contains the modified diene polymer, and a tire is produced from the rubber composition.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: June 16, 2015
    Assignees: BRIDGESTONE CORPORATION, JSR CORPORATION
    Inventors: Ken Tanaka, Kouji Masaki, Yoichi Ozawa, Eiji Suzuki, Christine M. Rademacher, Terrence E. Hogan, Takuo Sone, Takaomi Matsumoto
  • Patent number: 8673998
    Abstract: A method for preparing a polymeric composition, the method comprising providing a polymer cement including a polymer and a solvent; introducing a cold-flow inhibitor with the polymer cement, where the cold-flow inhibitor is selected from the group consisting of vicinal diamides, vicinal diureas and vicinal amide-ureas; and isolating at least a portion of the polymer and the cold-flow inhibitor from the solvent to provide a polymeric composition including the polymer and the cold-flow inhibitor.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 18, 2014
    Assignee: Bridgestone Corporation
    Inventors: Kevin M McCauley, Toshihiro Uchiyama, Christine M. Rademacher, Terrence E. Hogan