Patents by Inventor Alexander Korzhenko

Alexander Korzhenko 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: 11214523
    Abstract: A process for the production of highly carbonaceous material, including combining a structured precursor including fibres and an unstructured precursor, in the form of a fluid, wherein the fluid has a viscosity of less than 45,000 mPa·s?1 at the temperature at which the combination step occurs, and including at least a cyclic organic or aromatic compound in the molten state, or in solution at a concentration by weight of less than or equal to 65%, in order to obtain a combined precursor corresponding to the structured precursor covered by the unstructured precursor, wherein the process further includes step of thermal and dimensional stabilization of the combined precursor in order to obtain fibres covered with a cyclic organic or aromatic compound deposit, and a step of carbonization of the fibres covered with a cyclic organic or aromatic compound deposit in order to obtain a highly carbonaceous material.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: January 4, 2022
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Célia Mercader
  • Publication number: 20210119210
    Abstract: A new class of alkoxyamines is described that exhibits improved stability on storage, especially in the presence of monomers and/or of a solvent, and particularly where the alkoxylamines are a new class of oligomeric alkoxyamines, which are obtained by addition of one or more monomeric entities to an alkoxyamine.
    Type: Application
    Filed: April 19, 2019
    Publication date: April 22, 2021
    Applicant: Arkema France
    Inventors: Alexander Korzhenko, Pierre-Thomas Skowron, Paul-Guillaume Schmitt, Meriem Anouti
  • Publication number: 20210107791
    Abstract: The present invention proposes a process for purifying raw carbon nanotubes to obtain an content in metallic impurities comprised between 5 ppm and 200 ppm. The process includes an increase in the bulk density of the raw carbon nanotubes via compacting to produce compacted carbon nanotubes. The process further includes sintering the compacted carbon nanotubes by undergoing thermal treatment under gaseous atmosphere in order to remove at least a portion of the metallic impurities contained in the raw carbon nanotubes, and consequently producing purified carbon nanotubes. These purified carbon nanotubes are directly usable as electronic conductors serving as basis additive to an electrode material without requiring any subsequent purification step. The electrode material can then be used to manufacture an electrode destined to a lithium-ion battery.
    Type: Application
    Filed: March 29, 2018
    Publication date: April 15, 2021
    Applicants: HYDRO-QUÉBEC, Arkema France
    Inventors: Ali DARWICHE, Martin DONTIGNY, Naoyuki KONDO, Abdelbast GUERFI, Karim ZAGHIB, Julien BEAUSOLEIL, Alexander KORZHENKO
  • Publication number: 20210036331
    Abstract: An active material formulation comprising a sulfur-based material and an electrically conductive composition is described, wherein the electrically conductive composition comprises carbon nanotubes and carbon fibers. A process is also described for preparing the active material formulation, a catholyte comprising the formulation, a cathode comprising the catholyte and an accumulator comprising the cathode.
    Type: Application
    Filed: February 19, 2019
    Publication date: February 4, 2021
    Applicant: Arkema France
    Inventors: Alexander Korzhenko, Dominique Plee
  • Patent number: 10844521
    Abstract: A process for producing a highly carbonaceous fibre or set of fibres including combining a structured precursor comprising a hydrocellulose fibre or a set of fibres, and an unstructured precursor, including lignin or a lignin derivative in the form of a solution having a viscosity less than 15,000 mPa·s?1 at the temperature at which the combination step takes place, in order to obtain a hydrocellulose fibre or set of fibres coated with the lignin or lignin derivative, wherein the process further includes a step of thermal and dimensional stabilization of the hydrocellulose fibre or set of fibres covered with the lignin in order to obtain a hydrocellulose fibre or set of fibres covered with a deposit of lignin or lignin derivative, and a carbonization step of the hydrocellulose fibre or set of fibres coated with a lignin deposit in order to obtain a highly carbonaceous fibre or set of fibres.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 24, 2020
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Tatiana Kolomiets
  • Publication number: 20200346930
    Abstract: An agglomerated solid material comprising loose carbon nanotubes and that is free from organic compounds is described, as well as the method of preparation thereof, and uses thereof, where the agglomerated solid material consists of a continuous network of carbon nanotubes comprising aggregates of carbon nanotubes with an average size d50 under 5 ?m, in a proportion below 60% by area, determined by image analysis by electron microscopy and has an apparent density between 0.01 g/cm3 and 2 g/cm3.
    Type: Application
    Filed: January 10, 2019
    Publication date: November 5, 2020
    Applicant: Arkema France
    Inventors: Patrick Delprat, Alexander Korzhenko, Christophe Vincendeau, Daniel Cochard
  • Publication number: 20200350560
    Abstract: A formulation is described in the form of a solid-liquid dispersion for the manufacture of a cathode, comprising a liquid-phase solvent, a sulfur-carbon composite in the form of particles with a median diameter D50 of less than 50 ?m, and less than 10% by number of the particles of the dispersion are particles of sulfur in elemental form.
    Type: Application
    Filed: January 16, 2019
    Publication date: November 5, 2020
    Applicant: Arkema France
    Inventors: Alexander Korzhenko, Patrick Delprat, Christophe Vincendeau
  • Patent number: 10633508
    Abstract: The invention relates to a method for producing a master batch comprising between 0.01 and 50 wt. % of carbonaceous nanofillers and at least one sulphurated material such as elemental sulphur by melt compounding, and to the master batch thus produced and the different uses thereof. The invention also relates to a solid composition comprising carbonaceous nanofillers dispersed in a sulphurated material.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: April 28, 2020
    Assignee: Arkema France
    Inventors: Alexander Korzhenko, Christophe Vincendeau, Thierry Aubert
  • Patent number: 10446831
    Abstract: The present invention relates to an active material suitable for the production of an electrode, in particular an electrode for a Li—S battery. The active material according to the invention comprises carbon nanofillers homogeneously dispersed in the substance of a sulphur material, the active material being obtainable according to a method involving melting in the presence of intense mechanical energy. The quantity of carbon nanofillers in the active material represents 1 to 25% by weight with respect to the total weight of the active material. The active material according to the invention allows an improvement in the electronic conductivity of the formulation of the electrode. Another aspect of the invention is the use of the active material in an electrode, in particular in a Li—S battery cathode.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 15, 2019
    Assignee: Arkema France
    Inventors: Alexander Korzhenko, Christophe Vincendeau
  • Publication number: 20190271101
    Abstract: A process for producing a highly carbonaceous fibre or set of fibres including combining a structured precursor comprising a hydrocellulose fibre or a set of fibres, and an unstructured precursor, including lignin or a lignin derivative in the form of a solution having a viscosity less than 15,000 mPa·s?1 at the temperature at which the combination step takes place, in order to obtain a hydrocellulose fibre or set of fibres coated with the lignin or lignin derivative, wherein the process further includes a step of thermal and dimensional stabilization of the hydrocellulose fibre or set of fibres covered with the lignin in order to obtain a hydrocellulose fibre or set of fibres covered with a deposit of lignin or lignin derivative, and a carbonization step of the hydrocellulose fibre or set of fibres coated with a lignin deposit in order to obtain a highly carbonaceous fibre or set of fibres.
    Type: Application
    Filed: October 26, 2017
    Publication date: September 5, 2019
    Applicant: Arkema France
    Inventors: Alexander KORZHENKO, Tatiana KOLOMIETS
  • Publication number: 20190270678
    Abstract: A process for the production of highly carbonaceous material, including combining a structured precursor including fibres and an unstructured precursor, in the form of a fluid, wherein the fluid has a viscosity of less than 45,000 mPa·s?1 at the temperature at which the combination step occurs, and including at least a cyclic organic or aromatic compound in the molten state, or in solution at a concentration by weight of less than or equal to 65%, in order to obtain a combined precursor corresponding to the structured precursor covered by the unstructured precursor, wherein the process further includes step of thermal and dimensional stabilization of the combined precursor in order to obtain fibres covered with a cyclic organic or aromatic compound deposit, and a step of carbonization of the fibres covered with a cyclic organic or aromatic compound deposit in order to obtain a highly carbonaceous material.
    Type: Application
    Filed: October 26, 2017
    Publication date: September 5, 2019
    Applicant: Arkema France
    Inventors: Alexander KORZHENKO, Célia MERCADER
  • Patent number: 10208180
    Abstract: Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. A method for producing a master mixture including at least one superplasticiser and carbonaceous nanofillers at a mass ratio of between 0.1% and 25%, preferably between 0.2% and 20%, in relation to the total weight of the master mixture, and also to said master mixture thus obtained and to the use thereof in a hardenable inorganic system with a view to producing materials with improved properties. The disclosure applies to the construction industry, the building trade and the oil drilling industry.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 19, 2019
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Christophe Vincendeau, Anna Lushnikova, Grigory Ivanovich Yakovlev, Grigoriy Nikolayevich Pervushin, Jean-Marc Suau, David Platel
  • Publication number: 20190006059
    Abstract: A method for preparing a paste-like composition including carbon-based conductive fillers, at least one polymeric binder, at least one solvent, and at least one polymeric dispersant being different from the binder. Also, the paste that can result from said method, and to the uses thereof, in pure or diluted form, in particular for the manufacture of Li-ion batteries and super-capacitors.
    Type: Application
    Filed: May 2, 2018
    Publication date: January 3, 2019
    Applicant: ARKEMA FRANCE
    Inventors: Serge NICOLAS, Alexander KORZHENKO, Amélie MERCERON, Yvan LECOMTE
  • Patent number: 10158116
    Abstract: A method for the manufacture of a paste composition suitable for the production of an electrode for lead-acid battery, including mixing a carbon nanofiller/lead oxide composite of a first particulate size with sulphuric acid, water and further lead oxide of a second particulate size. Also, the paste thus obtained, the composite used in its manufacture, and the electrode and lead-acid battery obtained from this paste.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: December 18, 2018
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Patrick Delprat, Christophe Vincendeau, Beni Cahana
  • Patent number: 10125243
    Abstract: A composite material containing a polymer composition and a very low concentration of carbon nanofillers, in particular carbon nanotubes, having improved mechanical properties. The method for producing said composite material and to the different uses thereof. The use of carbon nanofillers at a concentration of between 0.1 ppm and 99 ppm in order to improve mechanical properties, in particular the tensile properties of a polymer matrix encasing at least one polymer selected from a thermoplastic polymer alone or mixed with an elastomer resin base, while facilitating the shaping thereof into composite parts using any suitable technique, in particular injection, extrusion, compression or molding, and while improving the electrostatic dissipation capability thereof.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: November 13, 2018
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Patrick Delprat, Catherine Bluteau, Andriy Tymoshenko, Anatolly Goryachkin, Dmitry Zakharov
  • Publication number: 20180166689
    Abstract: A masterbatch in agglomerated solid form including carbon nanofibers and/or nanotubes and/or carbon black, the content of which is between 15 wt % and 40 wt %, preferably between 20 wt % and 35 wt %, relative to the total weight of the masterbatch; at least one solvent; at least one polymer binder, which represents from 1 wt % to 40 wt %, preferably from 2 wt % to 30 wt % relative to the total weight of the masterbatch. Also, a concentrated masterbatch, characterized in that it is obtained by eliminating all or part of the solvent from the masterbatch described previously. Also, a process for preparing said masterbatches and to the uses of the latter, especially in the manufacture of an electrode or of a composite material for an electrode.
    Type: Application
    Filed: January 25, 2018
    Publication date: June 14, 2018
    Applicant: Arkema France
    Inventors: Serge Nicolas, Alexander Korzhenko, Amelie Merceron, Mickael Havel, Yvan Lecomte
  • Publication number: 20180148561
    Abstract: Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. A method for producing a master mixture including at least one superplasticiser and carbonaceous nanofillers at a mass ratio of between 0.1% and 25%, preferably between 0.2% and 20%, in relation to the total weight of the master mixture, and also to said master mixture thus obtained and to the use thereof in a hardenable inorganic system with a view to producing materials with improved properties. The disclosure applies to the construction industry, the building trade and the oil drilling industry.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 31, 2018
    Applicant: Arkema France
    Inventors: Alexander Korzhenko, Christophe Vincendeau, Anna Lushnikova, Grigory Ivanovich Yakovlev, Grigoriy Nikolayevich Pervushin, Jean-Marc Suau, David Platel
  • Patent number: 9909235
    Abstract: A method for manufacturing a continuous carbon fiber from a precursor material. According to this method, a precursor material including a continuous natural fiber and carbon nanofillers is used, said natural fiber being obtained from at least one plant constituent such as a cellulose. A process for manufacturing a continuous carbon fiber from a precursor material, including a step of carbonization of said precursor material, in which the precursor material includes a continuous natural fiber and carbon nanofillers, said natural fiber being obtained from at least one plant constituent, wherein it also includes a step of sizing the precursor material before the carbonization step.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: March 6, 2018
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Patrice Gaillard, Andriy Tymoshenko, Anatolly Goryashkin, Dimitry Zakharov
  • Publication number: 20180053939
    Abstract: The present invention relates to the field of lead batteries. More particularly, the present invention relates to the use, in the preparation of a lead battery electrode formulation, of a liquid composition, stable over time, comprising from 0.2% to 10% by weight, preferably from 0.2% to 5% by weight, of carbon-based nanofillers, at least one water-soluble polymer and at least one cationic component chosen from alkali metal or alkaline earth metal cations and ammonium ions dispersed in a liquid medium. Another subject-matter of the invention is a lead battery electrode obtained by using the said composition.
    Type: Application
    Filed: March 4, 2016
    Publication date: February 22, 2018
    Inventors: Alexander KORZHENKO, Christophe VINCENDEAU, Patrick DELPRAT, Beni CAHANA
  • Patent number: 9896564
    Abstract: The use of very low concentrations of carbon nanofillers selected from among carbon nanotubes, carbon nanofibers, graphene or a mixture of same in any proportions, in order to improve resistance to ageing, in particular protection against ultraviolet (UV) light, of a composite material based on a polymer matrix. A composite product comprising a composite material, the composite material stabilized with respect to UV light using a content of between 1 ppm and 0.1% by weight, of carbon-based nanofillers chosen from carbon nanotubes, carbon nanofibers, graphene or a mixture of these in all proportions, wherein the composite product is selected from yarns, films, tubes, fibers, and nonwovens.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: February 20, 2018
    Assignee: ARKEMA FRANCE
    Inventors: Alexander Korzhenko, Patrick Delprat, Catherine Bluteau, Andriy Tymoshenko, Anatoliy Goryachkin, Dmitry Zakharov