Patents by Inventor Christopher J. Hardiman

Christopher J. Hardiman 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: 20200048393
    Abstract: Polar modifier systems based on a blend of DTHFP, ETE, TMEDA, DMTHFMA and/or functionally similar compounds with BDMAEE and SMT are used to make block copolymers having high levels of pendant vinyl double bond repeat units, which is through highly selective 1,2-bond butadiene addition, low vinylcyclopentane formation, unimodal narrow molecular weight distribution, and a low level of randomized co-monomer repeat units. The block copolymers have very high levels of 1,2-vinyl content and high 3,4-vinyl bond addition of the conjugated diene monomer and low vinylcyclopentane content. The polar modifier systems provide a fast polymerization rate, with a unimodal narrow molecular weight distribution. The polar modifier systems allow operation at a higher temperature than in prior art systems, which reduces cooling requirements.
    Type: Application
    Filed: September 8, 2017
    Publication date: February 13, 2020
    Applicant: Dynasol Elastómeros, S.A. de C.V.
    Inventors: Daniel Abraham Elizarrarás Maya, Christopher J. Hardiman, Sergio Corona Galván, Sergio Alberto Moctezuma Espiricueto, Luis Antonio Rodríguez Guadarrama
  • Publication number: 20190322841
    Abstract: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber. Hydrophobated silica is mixed into a latex emulsion. Solution-rubber crumb in an aqueous suspension is mixed into the latex emulsion, which is coagulated, and a crumb is recovered, further homogenized, dried and baled to yield the silica masterbatch. A well-dispersed mixture of hydrophobated silica and emulsion-made rubber is added into a steam distillation step of a solution-rubber process from which a silica masterbatch is recovered. The emulsion-made rubber can be omitted to make a silica masterbatch of solution rubber and silica without emulsion rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Applicant: Industrias Negromex, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Robert J. Scribner, Julian Maldonado Valenzuela
  • Publication number: 20190263979
    Abstract: A process is provided for making a silica masterbatch, that contains silica and solution-made rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition. A process is also provided for making a masterbatch of silica, a solution-made rubber and an emulsion-made rubber.
    Type: Application
    Filed: August 31, 2017
    Publication date: August 29, 2019
    Applicant: Dynasol Elastómeros, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Sergio Alberto Moctezuma Espiricueto, John Kounavis, Gabriela Elizabeth Blanco Reyes, Julian Maldonado Valenzuela, José María Islas Manzur, Gabriel Hernández Zamora
  • Patent number: 10344146
    Abstract: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber. Hydrophobated silica is mixed into a latex emulsion. Solution-rubber crumb in an aqueous suspension is mixed into the latex emulsion, which is coagulated, and a crumb is recovered, further homogenized, dried and baled to yield the silica masterbatch. A well-dispersed mixture of hydrophobated silica and emulsion-made rubber is added into a steam distillation step of a solution-rubber process from which a silica masterbatch is recovered. The emulsion-made rubber can be omitted to make a silica masterbatch of solution rubber and silica without emulsion rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: July 9, 2019
    Assignee: Industrias Negromex, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Robert J. Scribner, Julian Maldonado Valenzuela
  • Publication number: 20170313857
    Abstract: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber. Hydrophobated silica is mixed into a latex emulsion. Solution-rubber crumb in an aqueous suspension is mixed into the latex emulsion, which is coagulated, and a crumb is recovered, further homogenized, dried and baled to yield the silica masterbatch. A well-dispersed mixture of hydrophobated silica and emulsion-made rubber is added into a steam distillation step of a solution-rubber process from which a silica masterbatch is recovered. The emulsion-made rubber can be omitted to make a silica masterbatch of solution rubber and silica without emulsion rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition.
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Applicant: Industrias Negromex, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Robert J. Scribner, Julian Maldonado Valenzuela
  • Patent number: 9738776
    Abstract: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber. Hydrophobated silica is mixed into a latex emulsion. Solution-rubber crumb in an aqueous suspension is mixed into the latex emulsion, which is coagulated, and a crumb is recovered, further homogenized, dried and baled to yield the silica masterbatch. A well-dispersed mixture of hydrophobated silica and emulsion-made rubber is added into a steam distillation step of a solution-rubber process from which a silica masterbatch is recovered. The emulsion-made rubber can be omitted to make a silica masterbatch of solution rubber and silica without emulsion rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 22, 2017
    Assignee: Industrias Negromex, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Robert J. Scribner, Julian Maldonado Valenzuela
  • Publication number: 20150252176
    Abstract: The present invention provides a process for making a silica masterbatch that contains hydrophobated silica, solution-made rubber and emulsion-made rubber. Hydrophobated silica is mixed into a latex emulsion. Solution-rubber crumb in an aqueous suspension is mixed into the latex emulsion, which is coagulated, and a crumb is recovered, further homogenized, dried and baled to yield the silica masterbatch. A well-dispersed mixture of hydrophobated silica and emulsion-made rubber is added into a steam distillation step of a solution-rubber process from which a silica masterbatch is recovered. The emulsion-made rubber can be omitted to make a silica masterbatch of solution rubber and silica without emulsion rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition.
    Type: Application
    Filed: February 19, 2015
    Publication date: September 10, 2015
    Applicant: Industrias Negromex, S.A. de C.V.
    Inventors: Christopher J. Hardiman, Xuan Fu, Robert J. Scribner, Julian Maldonado Valenzuela
  • Patent number: 8865799
    Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: October 21, 2014
    Assignees: Industrias Negromex, S.A. de C.V., Cooper Tire & Rubber Company
    Inventors: Peter J. Wallen, Christopher J. Hardiman, Howard A. Colvin, Gregory C. Bowman, Jose Eduardo Rojas Reyna
  • Publication number: 20140083598
    Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.
    Type: Application
    Filed: January 22, 2013
    Publication date: March 27, 2014
    Inventors: Peter J. Wallen, Christopher J. Hardiman, Howard A. Colvin, Gregory C. Bowman, Jose Eduardo Rojas Reyna
  • Publication number: 20130192746
    Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.
    Type: Application
    Filed: January 22, 2013
    Publication date: August 1, 2013
    Inventors: Peter J. Wallen, Christopher J. Hardiman, Howard A. Colvin, Gregory C. Bowman, Jose Eduardo Rojas Reyna
  • Patent number: 8357733
    Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: January 22, 2013
    Assignees: Industrias Negromex, S.A. de C.V., Cooper Tire & Rubber Company
    Inventors: Peter J. Wallen, Gregory C. Bowman, Howard A. Colvin, Christopher J. Hardiman, José Eduardo Rojas Reyna
  • Publication number: 20120077916
    Abstract: An emulsion polymerization copolymer comprising 59-77 phr butadiene, 10-16 phr styrene; 10-16 phr acrylonitrile; and from 3-9 phr methacrylic acid is soluble in acetone for U.S. EPA-exempt, low-VOC emissions, while also soluble in toluene. The composition is formulated with a tackifying resin; a plasticizer oil; and a U.S. EPA-exempt solvent, preferably acetone, to make an adhesive. The formulation is particularly useful as a pressure sensitive adhesive for tape and for making shoes.
    Type: Application
    Filed: September 28, 2011
    Publication date: March 29, 2012
    Applicant: INDUSTRIAS NEGROMEX, S.A. DE C.V
    Inventors: José Maria Islas Manzur, Christopher J. Hardiman, Enrique Alejandro Rodríguez Resendiz
  • Publication number: 20100022684
    Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.
    Type: Application
    Filed: July 23, 2009
    Publication date: January 28, 2010
    Inventors: Peter J. Wallen, Gregory C. Bowman, Howard A. Colvin, Christopher J. Hardiman, José Eduardo Rojas Reyna
  • Patent number: 5532025
    Abstract: A corrosion inhibiting composition is provided. The composition comprises an intrinsically conductive polymer, e.g. polyaniline or polypyrrole, blended in a binder material, preferably a non-thermoplastic matrix, the blend being capable of adhering to a metal surface to provide enhanced corrosion resistance to the metal. The blend provides corrosion resistance in a variety of corrosive environments such as acidic, alkaline, and salt environments. A method for protecting metal surfaces from corrosive attack by applying the corrosion inhibiting composition is provided, as well as two component corrosion inhibiting coatings, corrosion inhibited thin films of metal adhered to an intrinsically conducting polymer containing substrate, and corrosion inhibited metal bilayers.
    Type: Grant
    Filed: July 23, 1993
    Date of Patent: July 2, 1996
    Inventors: Patrick J. Kinlen, David C. Silverman, Edward F. Tokas, Christopher J. Hardiman
  • Patent number: 5266665
    Abstract: Cyclic olefin metathesis polymerization catalyst comprising metal compounds wherein said metals consist essentially of a minor amount of a transition metal which Will initiate ring-opening metathesis polymerization of a cyclic olefin and a major amount of at least one second metal which will propagate the polymerization, wherein said catalyst is essentially devoid of pyrophoric metal compounds, e.g. metal alkyls, and preformed metal carbenes. A preferred transition metal is ruthenium. Said second metal can comprise aluminum, copper, hafnium, iron (III), iridium, manganese, molybdenum, nickel, niobium, rhenium, rhodium, tantalum, titanium, tungsten, yttrium, a Lanthanide, zinc or zirconium or a mixture thereof. Using such catalyst cyclic olefin, e.g. norbornene derivatives, can be polymerized, e.g. in an extruder, even in the presence of water.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: November 30, 1993
    Assignee: Monsanto Company
    Inventor: Christopher J. Hardiman
  • Patent number: 5190658
    Abstract: An apparatus and a method for size exclusion chromatography is provided. The apparatus is a chromatographic column adapted for use in size exclusion chromatography by having dimensions suitable for size exclusion chromatography and by having a packing material comprising generally spherical particles having wedge-shaped macropores. Preferred particles are in the shape of lamellar and/or acicular crystals extending radially outwardly from a central core region and comprise aluminum oxide, aluminum hydroxide or a mixture thereof. The method involves passing a solution of macromolecules through a column adapted for size exclusion chromatography packed with such particles. The particles effectively and efficiently separate a wide range of macromolecules in decreasing order of their molecular weight.
    Type: Grant
    Filed: February 3, 1992
    Date of Patent: March 2, 1993
    Assignee: Monsanto Company
    Inventors: Lev Z. Vilenchik, Roger C. Ayotte, Jawed Asrar, Christopher J. Hardiman
  • Patent number: 5117327
    Abstract: Electrical devices, e.g. molded circuit boards, connectors and capacitors, fabricated from electrical insulating component, comprising norbornene dicarboximide thermoplastic polymer exhibiting a glass transition temperature greater than about 200.degree. C., moisture absorption after equilibrating in boiling water of less than about 3 weight percent and an electrical permittivity at 1000 hertz measured at 25.degree. C. and 50 percent relative humidity of less than 2.8. Preferred polymers comprise N-methyl norbornene dicarboximide, N-ethyl norbornene dicarboximide, N-propyl norbornene dicarboximide, N-butyl norbornene dicarboximide, N-trifluoroethyl norbornene dicarboximide, N-phenyl norbornene dicarboximide, N-trifluoromethylphenyl norbornene dicarboximide, N-cyclohexyl norbornene dicarboximide, N-cycloheptyl norbornene dicarboximide, N-cyclooctyl norbornene dicarboximide.
    Type: Grant
    Filed: December 19, 1990
    Date of Patent: May 26, 1992
    Assignee: Monsanto Company
    Inventors: Jawed Asrar, Christopher J. Hardiman
  • Patent number: 5100547
    Abstract: Stationary phases, useful for reversed-phase liquid chromatography, comprise polybutadiene-coated inorganic substrates having enhanced hydrophobicity due to attached alkyl groups, e.g. 2-30 carbon alkyl groups such as an octadecene group, and a low level of carbon-oxygen bonding in the polymer coating, e.g. less than 1 percent of the carbon in the polymer coating is bonded to oxygen.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: March 31, 1992
    Assignee: Monsanto Company
    Inventors: Christopher J. Hardiman, Jawed Asrar
  • Patent number: 5015613
    Abstract: Metal drier moderated to provide compositions of extended pot life by at least one molybdenum compound. Coating compositions of free radical polymerizable compounds and moderated metal drier exhibit lower propensity to yellowing when they are cured.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: May 14, 1991
    Assignee: Monsanto Company
    Inventors: Christopher J. Hardiman, Gary R. Bowers
  • Patent number: 5010154
    Abstract: Coating compositions comprising a free radical polymerizable compound, a fatty acid metal drier and a fugitive inhibitor of the metal drier comprising a compound selected from the group consisting of fluoro .beta.-diketones and fluoro .beta.-ketoesters. Upon application of the coating composition as a film to a substrate, the fugitive inhibitor is allowed to volatilize and the metal drier catalyzes the free-radical polymerization of the free radical polymerizable compound.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: April 23, 1991
    Assignee: Monsanto Company
    Inventor: Christopher J. Hardiman