Patents by Inventor Joshua S. Dickstein

Joshua S. Dickstein 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).

  • AGED LANTHANIDE-BASED CATALYST SYSTEMS AND THEIR USE IN THE PREPARATION OF CIS-1,4-POLYDIENES
    Publication number: 20230183399
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 15, 2023
    Inventors: Joshua S. DICKSTEIN, Steven LUO, Joshua ABELL, Laura S. KOCSIS, Kevin MCCAULEY
  • Polybutadiene polymers and rubber compositions incorporating same for low temperature applications
    Patent number: 11168160
    Abstract: Embodiments of 1,4-polybutadiene rubber compositions useful at low temperatures are provided, wherein the 1,4-polybutadiene incorporated therein comprises a cis content of at least 85 to about 92%, a vinyl content of at about 1% to about 5%, and a trans content of about 3 to about 12%, and wherein the 1,4-polybutadiene has an enthalpy of melting ?Hm of about 5 to about 25 J/g° C. as measured via differential scanning calorimetry (DSC).
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: November 9, 2021
    Assignee: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Joshua S. Dickstein, Dennis R. Brumbaugh, Zengquan Qin
  • Polymers functionalized with imine compounds containing a cyano group
    Patent number: 11066486
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a cyano group.
    Type: Grant
    Filed: January 25, 2020
    Date of Patent: July 20, 2021
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • AGED LANTHANIDE-BASED CATALYST SYSTEMS AND THEIR USE IN THE PREPARATION OF CIS-1,4-POLYDIENES
    Publication number: 20200407473
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Inventors: Joshua S. DICKSTEIN, Steven LUO, Joshua ABELL, Laura S. KOCSIS, Kevin MCCAULEY
  • Aged lanthanide-based catalyst systems and their use in the preparation of cis-1,4-polydienes
    Patent number: 10774162
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: September 15, 2020
    Assignee: Bridgestone Corporation
    Inventors: Joshua S. Dickstein, Steven Luo, Joshua Abell, Laura S. Kocsis, Kevin McCauley
  • Polybutadiene Polymers And Rubber Compositions Incorporating Same For Low Temperature Applications
    Publication number: 20200255558
    Abstract: Embodiments of 1,4-polybutadiene rubber compositions useful at low temperatures are provided, wherein the 1,4-polybutadiene incorporated therein comprises a cis content of at least 85 to about 92%, a vinyl content of at about 1% to about 5%, and a trans content of about 3 to about 12%, and wherein the 1,4-polybutadiene has an enthalpy of melting ?Hm of about 5 to about 25 J/g° C. as measured via differential scanning calorimetry (DSC).
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Applicant: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Joshua S. Dickstein, Dennis R. Brumbaugh, Zengquan Qin
  • POLYMERS FUNCTIONALIZED WITH IMINE COMPOUNDS CONTAINING A CYANO GROUP
    Publication number: 20200157253
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a cyano group.
    Type: Application
    Filed: January 25, 2020
    Publication date: May 21, 2020
    Inventors: Steven LUO, Joshua S. DICKSTEIN
  • Polybutadiene polymers and rubber compositions incorporating same for low temperature applications
    Patent number: 10640589
    Abstract: Embodiments of 1,4-polybutadiene rubber compositions useful at low temperatures are provided, wherein the 1,4-polybutadiene incorporated therein comprises a cis content of at least 85 to about 92%, a vinyl content of at about 1% to about 5%, and a trans content of about 3 to about 12%, and wherein the 1,4-polybutadiene has an enthalpy of melting ?Hm of about 5 to about 25 J/g° C. as measured via differential scanning calorimetry (DSC).
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: May 5, 2020
    Assignee: Bridgestone Corporation
    Inventors: Hyeonjae Kim, Joshua S. Dickstein, Dennis R. Brumbaugh, Zengquan Qin
  • Polymers functionalized with imine compounds containing a cyano group
    Patent number: 10590208
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a cyano group.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: March 17, 2020
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Cis-1,4-polydienes with improved cold flow resistance
    Patent number: 10316121
    Abstract: A method for preparing cis-1,4-polydienes having useful resistance to cold flow, the method comprising the steps of preparing a polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer and adding a Lewis acid to the polymerization system including a reactive polymer.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 11, 2019
    Assignee: Bridgestone Corporation
    Inventor: Joshua S. Dickstein
  • Polymers functionalized with protected oxime compounds containing a cyano group
    Patent number: 10030083
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound containing a cyano group.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: July 24, 2018
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Aged Lanthanide-Based Catalyst Systems And Their Use In The Preparation Of Cis-1,4-Polydienes
    Publication number: 20180009918
    Abstract: A method for preparing cis-1,4-polydienes, the method comprising the steps of preparing a preformed, active lanthanide-based catalyst, aging the active lanthanide-based catalyst for more than 5 days to thereby formed an aged catalyst, and introducing the aged catalyst and conjugated diene monomer to be polymerized to thereby form an active polymerization mixture in which the conjugated diene monomer is polymerized to form a polydiene having a reactive chain end.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 11, 2018
    Applicant: Bridgestone Corporation
    Inventors: Joshua S. Dickstein, Steven Luo, Joshua Abell, Laura S. Kocsis, Kevin McCauley
  • Cis-1,4-Polydienes With Improved Cold Flow Resistance
    Publication number: 20180009919
    Abstract: A method for preparing cis-1,4-polydienes having useful resistance to cold flow, the method comprising the steps of preparing a polymerization system including a reactive polymer by introducing a lanthanide-based catalyst and a conjugated diene monomer and adding a Lewis acid to the polymerization system including a reactive polymer.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 11, 2018
    Applicant: Bridgestone Corporation
    Inventor: Joshua S. DICKSTEIN
  • Polymers functionalized with heterocyclic imines
    Patent number: 9850328
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a heterocyclic group and a hydrocarbyloxy-substituted or silyloxy-substituted aryl group.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: December 26, 2017
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein, Joshua P. Abell
  • Polymers functionalized with unsaturated heterocycles containing an azolinyl group
    Patent number: 9663637
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an unsaturated heterocycle containing an azolinyl group.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: May 30, 2017
    Assignee: Bridgestone Corporation
    Inventors: Steven Luo, Joshua P. Abell, Joshua S. Dickstein
  • Lanthanide complex catalyst and polymerization method employing same
    Patent number: 9469658
    Abstract: A novel class of lanthanide metal salen complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers.
    Type: Grant
    Filed: February 5, 2012
    Date of Patent: October 18, 2016
    Assignee: Bridgestone Corporation
    Inventors: Zengquan Qin, Steven Luo, Joshua S. Dickstein
  • Polymers Functionalized With Imine Compounds Containing A Cyano Group
    Publication number: 20160237179
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a cyano group.
    Type: Application
    Filed: October 1, 2014
    Publication date: August 18, 2016
    Applicant: Bridgestone Corporation
    Inventors: Steven Luo, Joshua S. Dickstein
  • Lanthanide complex catalyst and polymerization method employing same
    Patent number: 9273165
    Abstract: A novel class of lanthanide metal phenoxyimine complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers.
    Type: Grant
    Filed: February 5, 2012
    Date of Patent: March 1, 2016
    Assignee: Bridgestone Corporation
    Inventors: Zengquan Qin, Steven Luo, Joshua S. Dickstein
  • Polymers Functionalized With Heterocyclic Imines
    Publication number: 20160039958
    Abstract: A method for preparing a functionalized polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with an imine compound containing a heterocyclic group and a hydrocarbyloxy-substituted or silyloxy-substituted aryl group.
    Type: Application
    Filed: March 7, 2014
    Publication date: February 11, 2016
    Applicant: Bridgestone Corporation
    Inventors: Steven LUO, Joshua S. DICKSTEIN, Joshua P. ABELL
  • Bulk polymerization process for producing polydienes
    Patent number: 9228037
    Abstract: A process for preparing a polydiene, the process comprising the steps of: polymerizing conjugated diene monomer with a metallocene complex catalyst system within a polymerization mixture that includes less than 20% by weight of solvent based on the total weight of the polymerization mixture, where the metallocene complex catalyst system includes the combination or reaction product of: (a) metallocene complex, (b) an alkylating agent, and optionally (c) a non-coordinating anion.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: January 5, 2016
    Assignee: Bridgestone Corporation
    Inventors: Kevin M. McCauley, Zengquan Qin, Joshua S. Dickstein, Steven Luo