Patents by Inventor Valeri Kapeliouchko

Valeri Kapeliouchko 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: 9803036
    Abstract: The invention pertains to a process for manufacturing a (per)fluoropolymer, said process comprising polymerizing one or more fluorinated monomers in the presence of a multi-phase medium, said medium comprising: (A) a water phase [phase (W)]; (B) at least one fluorinated surfactant [surfactant (FS)] having formula (I) here below: Rf—(OCF2CF2)k-1—O—CF2—COOXa??(I) wherein Rf is a C1-C3 perfluoroalkyl group comprising, optionally, one or more ether oxygen atoms, k is 2 or 3 and Xa is a selected from a monovalent metal and an ammonium group of formula NRN4, wherein RN, equal or different at each occurrence, is a hydrogen atom or a C1-C3 alkyl group; (C) an oil phase [phase (O)] comprising: at least one non-functional (per)fluoropolyether (non-functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (RF)] and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R?F)] and having a number average molecular weight of
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: October 31, 2017
    Assignee: Solvay Specialty Polymers Italy S.P.A.
    Inventors: Riccardo Pieri, Valeri Kapeliouchko, Liubov Chernysheva
  • Patent number: 8859645
    Abstract: The invention pertain to a process for purifying a fluoropolymer dispersion, said process comprising: (i) providing an aqueous dispersion (D) of at least one fluoropolymer [polymer (F)]comprising at least one fluorinated surfactant [surfactant (FS)], having a solids content (SC) of 15% by weight or more; (ii) adding to said aqueous dispersion (D) at least one non-ionic non-fluorinated surfactant [surfactant (NS)]; (iii) adjusting said solid content (SC) to less than 10% by weight, to obtain a diluted aqueous dispersion (dD); (iv) contacting said diluted aqueous dispersion (dD) with at least one adsorbing material, so as to obtain an aqueous dispersion of polymer (F) having a content of the fluorinated surfactant (FS) of less than 1 ppm based on the total weight of solids. Still an object of the invention is an aqueous fluoropolymer dispersion comprising less than 1 ppm of fluorinated surfactant.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: October 14, 2014
    Assignee: Solvay Solexis S.p.A.
    Inventors: Tiziana Poggio, Fabrizio Spada, Valeri Kapeliouchko
  • Publication number: 20140228531
    Abstract: The invention pertains to a method for making a fluoropolymer comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein said aqueous emulsion polymerization is carried out in the presence of at least one cyclic fluorocompound of the following formula (I): wherein X1, X2, X3, equal or different from each other are independently selected among H, F, and C1-6 (per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms; L represents a bond or a divalent group; RF is a divalent fluorinated C1-3 bridging group; Y is a hydrophilic function selected among anionic functionalities, cationic functionalities and non-ionic functionalities.
    Type: Application
    Filed: March 5, 2014
    Publication date: August 14, 2014
    Applicant: SOLVAY SOLEXIS S.p.A.
    Inventors: Giuseppe MARCHIONNI, Vito Tortelli, Ivan Wlassics, Valeri Kapeliouchko
  • Patent number: 8703889
    Abstract: A method for making a fluoropolymer comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein the aqueous emulsion polymerization is carried out in the presence of at least one cyclic fluorocompound of the following formula (I): wherein X1, X2, X3, equal to or different from each other are independently selected among H, F, and C1-6 (per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms; L represents a bond or a divalent group; RF is a divalent fluorinated C1-3 bridging group; Y is a hydrophilic function selected among anionic functionalities, cationic functionalities and non-ionic functionalities.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: April 22, 2014
    Assignee: Solvay Solexis S.p.A.
    Inventors: Giuseppe Marchionni, Vito Tortelli, Ivan Wlassics, Valeri Kapeliouchko
  • Publication number: 20120283383
    Abstract: The invention pertains to a process for manufacturing a (per)fluoropolymer, said process comprising polymerizing one or more fluorinated monomers in the presence of a multi-phase medium, said medium comprising: (A) a water phase [phase (W)]; (B) at least one fluorinated surfactant [surfactant (FS)] having formula (I) here below: Rf—(OCF2CF2)k-1—O—CF2—COOXa??(I) wherein Rf is a C1-C3 perfluoroalkyl group comprising, optionally, one or more ether oxygen atoms, k is 2 or 3 and Xa is a selected from a monovalent metal and an ammonium group of formula NRN4, wherein RN, equal or different at each occurrence, is a hydrogen atom or a C1-C3 alkyl group; (C) an oil phase [phase (O)] comprising: at least one non-functional (per)fluoropolyether (non-functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (RF)] and at least one functional (per)fluoropolyether (functional PFPE) comprising at least one (per)fluoropolyoxyalkylene chain [chain (R?F)] and having a number average molecular
    Type: Application
    Filed: December 16, 2010
    Publication date: November 8, 2012
    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
    Inventors: Riccardo Pieri, Valeri Kapeliouchko, Liubov Chernysheva
  • Publication number: 20110160415
    Abstract: The invention pertains to a method for making a fluoropolymer comprising an aqueous emulsion polymerization of one or more fluorinated monomers wherein said aqueous emulsion polymerization is carried out in the presence of at least one cyclic fluorocompound of the following formula (I): wherein X1, X2, X3, equal or different from each other are independently selected among H, F, and C1-6 (per)fluoroalkyl groups, optionally comprising one or more catenary or non-catenary oxygen atoms; L represents a bond or a divalent group; RF is a divalent fluorinated C1-3 bridging group; Y is a hydrophilic function selected among anionic functionalities, cationic functionalities and non-ionic functionalities.
    Type: Application
    Filed: July 6, 2009
    Publication date: June 30, 2011
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Giuseppe Marchionni, Vito Tortelli, Ivan Wlassics, Valeri Kapeliouchko
  • Patent number: 7915356
    Abstract: A fluoropolymer [polymer (F)], a polymerisation process for its manufacture, and a molding process using such fluoropolymer [polymer (F)]. The polymerisation process comprises polymerising at least one fluorinated monomer in a polymerization medium, in which the polymerization medium is mixed by means of a stirring system comprising at least two counter-rotating impellers. Surprisingly and advantageously, the polymerization occurs without fouling or deposit formation on the reactor walls, and moreover, occurs with improved homogeneity, without composition, pressure or temperature gradients, thus enabling obtaining homogeneous polymer composition with no risk of local overheating. A polymer (F) obtained from such process has improved morphology (percentage of organized structures, i.e.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: March 29, 2011
    Assignee: Solvay Solexis S.p.A.
    Inventors: Vincenzo Arcella, Valeri Kapeliouchko, Stefano Ferrero, Aniello Gargiulo
  • Publication number: 20110040039
    Abstract: Core-shell particles having a core of at least one tetrafluoroethylene (TFE) polymer and having an average primary particle size of less than 50 nm; and a shell of at least one acrylic polymer having recurring units, more than 50% by moles of which being derived from at least one ethylenically unsaturated monomer having directly bonded to one of the sp2 carbon atoms of the ethylenic unsaturation at least one group of formula: Process for manufacturing core-shell particles. Use as ingredients/additives in polymer compositions, polymer composition and articles containing the same.
    Type: Application
    Filed: April 24, 2007
    Publication date: February 17, 2011
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Giovanna Palamone, Tiziana Poggio, Valeri Kapeliouchko, Michele Laus
  • Patent number: 7691936
    Abstract: Fine fluoropolymer powders substantially fluorinated surfactant free, in particular fluorinated ionic surfactants, preferably perfluorooctanoic acid or its salts, comprising an anionic polyelectrolyte.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: April 6, 2010
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Malvasi, Stefano Ferrero, Valeri Kapeliouchko
  • Patent number: 7683118
    Abstract: A process for preparing a fluoropolymer dispersion that is substantially anionic fluorinated surfactant free includes adding to a fluoropolymer dispersion a nonionic surfactant having a cloud point (CP) between 40 and 80° C. in a concentration of 1.5% to 50% by weight of the fluoropolymer, heating the dispersion up to a temperature Tc in a range of CP±10°C., decanting the dispersion in a reactor at Tc until obtaining a lower aqueous phase containing a concentrated fluoropolymer dispersion and an upper aqueous phase substantially not containing the fluoropolymer dispersion, washing the decanted dispersion with a solution of water and nonionic surfactant having a concentration of the nonionic surfactant of 0.5% to 50% by weight of the fluoropolymer, removing the upper aqueous phase from the upper part of the reactor, and discharge and recovery of the fluoropolymer dispersion.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: March 23, 2010
    Assignee: Solvay Solexis S.p.A.
    Inventors: Alberto Mirigliani, Evasio Deregibus, Valeri Kapeliouchko
  • Patent number: 7678848
    Abstract: A process to substantially remove fluorinated anionic surfactants from fluoropolymer dispersions comprising the following steps: a) addition to the fluoropolymer dispersion of one or more non fluorinated surfactants; b) contact of the dispersion with an anionic exchanger; c) separation of the dispersion from the anionic exchanger and recovery of the dispersion substantially fluorinated anionic surfactant free.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: March 16, 2010
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Malvasi, Valeri Kapeliouchko
  • Patent number: 7645845
    Abstract: A process for producing a polymer by polymerizing at least one fluorinated monomer in the presence of a radical initiator and a surfactant in a polymerization medium containing essentially only carbon dioxide. The surfactant is a functional (per)fluoropolyether having recurring units (R1) and at least one functional group containing a heteroatom other than fluorine, the recurring units containing at least one ether linkage in the main chain and at least one fluorine atom. Molded article containing the polymer obtained from the process.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: January 12, 2010
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Apostolo, Valeri Kapeliouchko, Alessandro Galia, Onofrio Scialdone, Giuseppe Filardo
  • Publication number: 20090272944
    Abstract: The invention pertain to a process for purifying a fluoropolymer dispersion, said process comprising: (i) providing an aqueous dispersion (D) of at least one fluoropolymer [polymer (F)] comprising at least one fluorinated surfactant [surfactant (FS)], having a solids content (SC) of 15% by weight or more; (ii) adding to said aqueous dispersion (D) at least one non-ionic non-fluorinated surfactant [surfactant (NS)]; (iii) adjusting said solid content (SC) to less than 10% by weight, to obtain a diluted aqueous dispersion (dD); (iv) contacting said diluted aqueous dispersion (dD) with at least one adsorbing material, so as to obtain an aqueous dispersion of polymer (F) having a content of the fluorinated surfactant (FS) of less than 1 ppm based on the total weight of solids. Still an object of the invention is an aqueous fluoropolymer dispersion comprising less than 1 ppm of fluorinated surfactant.
    Type: Application
    Filed: April 6, 2007
    Publication date: November 5, 2009
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Tiziana Poggio, Fabrizio Spada, Valeri Kapeliouchko
  • Publication number: 20090264594
    Abstract: The invention relates to an aromatic sulfone polymer composition comprising at least one aromatic sulfone polymer [polymer (P)]; from 0.02 to less than 10 wt %, based on the total weight of the composition, of a tetrafluoroethylene (TFE) polymer [polymer (F)] under the form of nanoparticles, wherein said nanoparticles have an average primary particle size of less than 100 nm. The compositions of the invention advantageously display an unexpected combination of excellent mechanical properties, excellent chemical resistance, excellent optical properties (transparency and/or colorability) and low flammability. Still an object of the invention is a process for manufacturing aromatic sulfone polymer compositions. According to a preferred embodiment, said process comprises a co-coagulating step of an aromatic sulfone polymer solution with TFE nanoparticles. Still objects of the invention are the articles comprising the composition as above specified.
    Type: Application
    Filed: December 4, 2006
    Publication date: October 22, 2009
    Applicant: SOLVAY (SOCIETE ANONYME)
    Inventors: Shari Weinberg, Thomas H. Schwab, Tiziana Poggio, Valeri Kapeliouchko, Jean-Raphael Caille, Daniel Gloesener
  • Patent number: 7534825
    Abstract: Dispersions of fluorinated polymers substantially free from fluorinated surfactants, having high stability to shear combined with high stability to segregation, said dispersions comprising one or more anionic surfactants having the following general formula (1): Y?-(P1)n-CH(Y)-(P2)n?-Y???(1) wherein: Y, Y? and Y? are anionic or nonionic groups, with the proviso that at least one of Y, Y? or Y? is an anionic group and at least one of the remaining of Y, Y? or Y? is a nonionic group; p1 and p2, equal or different, are linear or branched alkylene groups, optionally containing one or more unsaturations, having a number of carbon atoms from 1 to 10, preferably from 1 to 6; n and n? equal or different, are zero or 1.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 19, 2009
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Malvasi, Valeri Kapeliouchko
  • Publication number: 20090108501
    Abstract: A fluoropolymer [polymer (F)], a polymerisation process for its manufacture, and a moulding process using such fluoropolymer [polymer (F)]. The polymerisation process comprises polymerising at least one fluorinated monomer in a polymerization medium, in which the polymerization medium is mixed by means of a stirring system comprising at least two counter-rotating impellers. Surprisingly and advantageously, the polymerization occurs without fouling or deposit formation on the reactor walls, and moreover, occurs with improved homogeneity, without composition, pressure or temperature gradients, thus enabling obtaining homogeneous polymer composition with no risk of local overheating. A polymer (F) obtained from such process has improved morphology (percentage of organized structures, i.e.
    Type: Application
    Filed: April 6, 2007
    Publication date: April 30, 2009
    Applicant: SOLVAY SOLEXIS S.P.A.
    Inventors: Vincenzo Arcella, Valeri Kapeliouchko, Stefano Ferrero, Aniello Gargiulo
  • Publication number: 20080275162
    Abstract: The invention relates to core-shell particles, said particles comprising: a core consisting essentially of at least one tetrafluoroethylene (TFE) polymer [polymer (F)], said core having an average primary particle size of less than 100 nm a shell consisting essentially of at least one high performance polymer [polymer (HPP)], wherein the polymer (HPP) is chosen among polycondensation polymers that have a heat deflection temperature (HDT) of above 80° C. under a load of 1.82 MPa when measured according to ASTM D648. The core-shell particles of the invention advantageously allow obtaining molded articles with homogeneous properties, both when used alone and when used as additive, as they generally do not undergo segregation phenomena. Still objects of the inventions are the process for manufacturing said core-shell particles, the use of said particles as additives, the composition and the articles thereof.
    Type: Application
    Filed: December 4, 2006
    Publication date: November 6, 2008
    Applicant: SOLVAY (Societe Anonyme)
    Inventors: Thomas H. Schwab, Shari Weinberg, Tiziana Poggio, Valeri Kapeliouchko, Michele Laus
  • Publication number: 20080014423
    Abstract: Tape comprising a polymer composition, said polymer composition comprising at least one fluoropolymer and a modifier consisting of at least one aromatic polyimide chosen from aromatic polyamide-imides and aromatic polyesterimides, and, optionally in addition, at least one aromatic polyimide chosen from aromatic polyimides other than aromatic polyamide-imides and aromatic polyesterimides, said modifier being comprised in the polymer composition in an amount of up to 75 wt. % (based on the total weight of the polymer composition). Article comprising said tape. Processes especially well-adapted for manufacturing said tape. Use of the above modifier as an additive of a polymer composition comprising a fluoropolymer, to increase the abrasion resistance either of a tape comprising said polymer composition, or of an article comprising an outermost layer which covers at least partially the article, said outer most layer comprising a tape comprising said polymer composition.
    Type: Application
    Filed: June 10, 2005
    Publication date: January 17, 2008
    Applicant: Solvay (Societe Anonymw
    Inventors: David Garrison, Peter Sirusas, Valeri Kapeliouchko, Fabio Polastri, Enrico Marchese, Brian Stern
  • Patent number: 7297744
    Abstract: A process for preparing fluoropolymer dispersions, substantially free from anionic fluorinated surfactants, and with a coagulum amount <0.1% by weight, comprising: a) step a1) addition of: a non ionic surfactant having cloud point (CP) between 40° and 80° C., in an amount from 1.5% to 50% by weight on the dispersion fluoropolymer; and optionally an electrolyte to bring the specific conductivity of the dispersion to values in the range 130-8,000 ?S/cm; optionally a buffer agent to have a pH between 2 and 12 to a fluoropolymer dispersion obtainable by an emulsion polymerization process; step a2): heating of the dispersion obtained in a1) up to a temperature Tc in the range CP±10° C.; decantation without stirring, at the temperature Tc, until obtaining the dispersion separation in two aqueous phases, of which the lower one containing the fluoropolymer is discharged; b) step b1): the dispersion obtained in step a2) is optionally additioned of an electrolyte and of a non ionic surfactant as in a1).
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: November 20, 2007
    Assignee: Solvay Solexis S.p.A.
    Inventors: Valeri Kapeliouchko, Marco Malvasi
  • Patent number: 7294276
    Abstract: A process to substantially remove the fluorinated anionic surfactants from fluoropolymer dispersions comprising the following steps: a) addition to the fluoropolymer dispersion of an anionic polyelectrolyte; b) contact of the dispersion with an anionic exchanger; c) separation of the dispersion from the anionic exchanger and recovery of the dispersion substantially fluorinated anionic surfactant free.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: November 13, 2007
    Assignee: Solvay Solexis S.p.A.
    Inventors: Marco Malvasi, Tiziana Poggio, Valeri Kapeliouchko