Patents by Inventor James H. Pawlow

James H. Pawlow 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: 20190309133
    Abstract: A method for preparation of (meth)acrylate esters of polysiloxanes. The method comprises contacting in the presence of zirconium acetylacetonate or hafnium acetylacetonate: (i) a polysiloxane having at least two hydroxyl groups, each of which is attached to a carbon atom, and (ii) a C1-C4 alkyl (meth)acrylate.
    Type: Application
    Filed: November 9, 2017
    Publication date: October 10, 2019
    Inventors: Muhunthan Sathiosatham, James H. Pawlow, Lan T.P. Hoang Nguyen
  • Patent number: 10407522
    Abstract: A nanoparticle includes a copolymer comprising a vinyl-aromatic monomer and a heterocyclic monomer. The copolymer is crosslinked with a multifunctional crosslinking agent polymerizable through an addition reaction. A nanoparticle and elastomer composition is disclosed. Several methods of mixing heterocyclic and non-heterocyclic monomer nanoparticles into an elastomer are also disclosed. These methods include mixing in a multi-elements static mixer and an intermeshing mixer with venting, among others.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: September 10, 2019
    Assignee: Bridgestone Corporation
    Inventors: William L. Hergenrother, Waruna C. B. Kiridena, James H. Pawlow, James D. Ulmer, Christopher G. Robertson, Michael Davis, Jeffrey Quinn
  • Patent number: 10400089
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A stabilizing agent having the formula (R)4-nSi(OH)n wherein R is a C1 to C18 alkyl, C1 to C18 alkyl group containing a heteroatom such as nitrogen or oxygen, C4 to C8 cycloalkyl, or C6 to C18 aromatic group is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 3, 2019
    Assignee: Firestone Polymers, LLC
    Inventors: Mark N. DeDecker, Joseph P. Padolewski, James H. Pawlow
  • 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: 9718931
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A dialkoxysilane stabilizing agent is then added to the polymer in combination with a base material. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: August 1, 2017
    Assignee: Firestone Polymers, LLC
    Inventors: Kenji Nakatani, Mark N. DeDecker, Joseph P. Padolewski, James H. Pawlow
  • Patent number: 9708429
    Abstract: Methods of making polymers by polymerizing conjugated diolefin in a hydrocarbon solvent in the presence of an initiator are described. Trialkyl or triaryl siloxy iminosilane functionalizing agents are reacted with the polymer, followed by desolvatizing the polymer. The resulting polymer not only has good filler interaction and processability, but results in a polymer with stable Mooney viscosity. A polymer made by the process of the present invention, including silica, and carbon black fillers, and rubber compositions, and tires containing side walls and treads containing the polymers are also described.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 18, 2017
    Assignee: Firestone Polymers, LLC
    Inventor: James H. Pawlow
  • Patent number: 9611364
    Abstract: A method of making a polymer with stable Mooney viscosity is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxysilane terminal functionalizing groups are bonded to the polymer. An alkoxysilane stabilizing agent is then added to the polymer in the presence of hydrocarbon oil. The polymer is then desolvatized, resulting in a polymer with stable Mooney viscosity, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: April 4, 2017
    Assignee: Firestone Polymers, LLC
    Inventors: Mark N. DeDecker, James H. Pawlow, Joseph P. Padolewski, Kenji Nakatani
  • Patent number: 9447244
    Abstract: Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber as alcohol (a volatile organic compound (VOC)), during compounding and further processing. The blocked-mercapto alkoxy-modified silsesquioxane compounds also contain a blocked mercapto group which, when de-blocked, allows the mercapto group to interact with the polymer(s) in a rubber composition. Further described are rubber compounds containing the blocked-mercapto alkoxy-modified silsesquioxanes.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: September 20, 2016
    Assignee: Bridgestone Corporation
    Inventors: William L. Hergenrother, Chenchy Jeffrey Lin, James H. Pawlow, Terrence E. Hogan
  • Patent number: 9428604
    Abstract: A nanoparticle includes a copolymer comprising a vinyl-aromatic monomer and a heterocyclic monomer. The copolymer is crosslinked with a multifunctional crosslinking agent polymerizable through an addition reaction. A nanoparticle and elastomer composition is disclosed. Several methods of mixing heterocyclic and non-heterocyclic monomer nanoparticles into an elastomer are also disclosed. These methods include mixing in a multi-elements static mixer and an intermeshing mixer with venting, among others.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: August 30, 2016
    Assignee: Bridgestone Corporation
    Inventors: William L. Hergenrother, Waruna C. B. Kiridena, James H. Pawlow, James D. Ulmer, Christopher G. Robertson, Michael Davis
  • Patent number: 9365700
    Abstract: Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: June 14, 2016
    Assignee: Bridgestone Corporation
    Inventors: William L. Hergenrother, Walter Tomaszewski, Ashley Hilton, Michael Hayes, James H. Pawlow, Terrence E. Hogan
  • Patent number: 9255167
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A mixture of at least one of a first stabilizing agent having the formula (R)4-nSi(OH)n wherein R is a C1 to C18 alkyl, C1 to C18 alkyl group containing a heteroatom such as nitrogen or oxygen, C4 to C8 cycloalkyl, or C6 to C18 aromatic group, and a at least one of a second stabilizing agents having the formula (R)2Si(OH)2 wherein R is an aryl group, is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatized, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: February 9, 2016
    Assignee: Firestone Polymers, LLC
    Inventors: James H. Pawlow, Mark N. DeDecker
  • Publication number: 20150240016
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A mixture of at least one of a first stabilizing agent having the formula (R)4-nSi(OH)n wherein R is a C1 to C18 alkyl, C1 to C18 alkyl group containing a heteroatom such as nitrogen or oxygen, C4 to C8 cycloalkyl, or C6 to C18 aromatic group, and a at least one of a second stabilizing agents having the formula (R)2Si(OH)2 wherein R is an aryl group, is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatized, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Application
    Filed: December 4, 2014
    Publication date: August 27, 2015
    Applicant: Firestone Polymers, LLC
    Inventors: James H. Pawlow, Mark N. DeDecker
  • Publication number: 20150225506
    Abstract: Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber as alcohol (a volatile organic compound (VOC)), during compounding and further processing. The blocked-mercapto alkoxy-modified silsesquioxane compounds also contain a blocked mercapto group which, when de-blocked, allows the mercapto group to interact with the polymer(s) in a rubber composition. Further described are rubber compounds containing the blocked-mercapto alkoxy-modified silsesquioxanes.
    Type: Application
    Filed: February 20, 2015
    Publication date: August 13, 2015
    Applicant: Bridgestone Corporation
    Inventors: William L. Hergenrother, Chenchy Jeffrey Lin, James H. Pawlow, Terrence E. Hogan
  • Patent number: 9062144
    Abstract: Compositions and methods are included for preparing a hairy polymeric nanoparticle including first and second shell block polymer arms are at least partially phase-separated and surround a polymeric core. One type of polymeric arm can have a greater polarity than the other type(s) of polymeric arms. A rubber composition including the hairy nanoparticles is also provided.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: June 23, 2015
    Assignee: Bridgestone Corporation
    Inventors: Xiaorong Wang, Hideki Kitano, James H. Pawlow, Christopher G. Robertson, Yaohong Chen, Yuan-Yong Yan
  • Publication number: 20150166737
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A dialkoxysilane stabilizing agent is then added to the polymer in combination with a base material. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Application
    Filed: June 5, 2013
    Publication date: June 18, 2015
    Applicant: Firestone Polymers, LLC
    Inventors: Kenji Nakatani, Mark N. DeDecker, Joseph P. Padolewski, James H. Pawlow
  • Publication number: 20150166700
    Abstract: Methods of making polymers by polymerizing conjugated diolefin in a hydrocarbon solvent in the presence of an initiator are described. Trialkyl or triaryl siloxy iminosilane functionalizing agents are reacted with the polymer, followed by desolvatizing the polymer. The resulting polymer not only has good filler interaction and processability, but results in a polymer with stable Mooney viscosity. A polymer made by the process of the present invention, including silica, and carbon black fillers, and rubber compositions, and tires containing side walls and treads containing the polymers are also described.
    Type: Application
    Filed: June 5, 2013
    Publication date: June 18, 2015
    Applicant: Firestone Polymers, LLC
    Inventor: James H. Pawlow
  • Publication number: 20150166738
    Abstract: A method of making a polymer with stable Mooney viscosity and molecular weight is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxy silane terminal functionalizing groups are bonded to the polymer. A stabilizing agent having the formula (R)4-nSi(OH)n wherein R is a C1 to C18 alkyl, C1 to C18 alkyl group containing a heteroatom such as nitrogen or oxygen, C4 to C8 cycloalkyl, or C6 to C18 aromatic group is then added to the polymer, optionally in the presence of hydrocarbon oil. The polymer is then desolvatizing, resulting in a polymer with stable Mooney viscosity and molecular weight, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Application
    Filed: June 5, 2013
    Publication date: June 18, 2015
    Applicant: Firestone Polymers LLC
    Inventors: Mark N. DeDecker, Joseph P. Padolewski, James H. Pawlow
  • Publication number: 20150152249
    Abstract: Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water.
    Type: Application
    Filed: August 4, 2014
    Publication date: June 4, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: William L. Hergenrother, Walter Tomaszewski, Ashley Hilton, Michael Hayes, James H. Pawlow, Terrence E. Hogan
  • Publication number: 20150133601
    Abstract: A method of making a polymer with stable Mooney viscosity is described. A conjugated diolefin is reacted in a hydrocarbon solvent in the presence of an initiator to form a polymer. After forming the polymer, alkoxysilane terminal functionalizing groups are bonded to the polymer. An alkoxysilane stabilizing agent is then added to the polymer in the presence of hydrocarbon oil. The polymer is then desolvatized, resulting in a polymer with stable Mooney viscosity, even over prolonged periods of time. Compositions and articles containing the polymer are also described.
    Type: Application
    Filed: June 6, 2013
    Publication date: May 14, 2015
    Applicant: Firestone Polymers, LLC
    Inventors: Mark N. DeDecker, James H. Pawlow, Joseph P. Padolewski, Kenji Nakatani
  • Patent number: 8962746
    Abstract: Methods of forming blocked-mercapto alkoxy-modified silsesquioxanes are provided. The blocked-mercapto alkoxy-modified silsesquioxane compounds contain an alkoxysilane group that participates in an alkoxysilane-silica reaction as a silica dispersing agent in rubber, with the release of zero to about 0.1% by weight of the rubber as alcohol (a volatile organic compound (VOC)), during compounding and further processing. The blocked-mercapto alkoxy-modified silsesquioxane compounds also contain a blocked mercapto group which, when de-blocked, allows the mercapto group to interact with the polymer(s) in a rubber composition. Further described are rubber compounds containing the blocked-mercapto alkoxy-modified silsesquioxanes.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: February 24, 2015
    Assignee: Bridgestone Corporation
    Inventors: William L. Hergenrother, Chenchy Jeffrey Lin, James H. Pawlow, Terrence E. Hogan