Patents by Inventor Gabriela Eugenia Fonseca Zepeda

Gabriela Eugenia Fonseca Zepeda 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: 10927222
    Abstract: A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: February 23, 2021
    Assignee: BASF SE
    Inventors: Sandra Jeck, Oliver Soetje, Tobias Bringmann, Gabriela Eugenia Fonseca Zepeda, Dirk Meckelnburg, Dennis Loesch, Bjoern Langlotz, John Barratt, Faissal-Ali El-Toufaili, Hazel Sprafke, Bernd Schube, Markus Ostermayr
  • Patent number: 10604611
    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads of an aqueous solution comprising water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, recovering polymer beads, and then cleaning the non-aqueous liquid in which the process comprises providing the non-aqueous liquid in a vessel (1), forming a suspension of monomer beads from the aqueous monomer or monomer blend in the non-aqueous liquid, initiating polymerisation to form polymerising beads, removing a suspension of the polymer beads in non-aqueous liquid from the vessel and recovering, water soluble or water swellable polymer beads from the suspension, in which the non-aqueous liquid contains impurities which comprise particles, and then transferring the non-aqueous liquid from the suspension to a cleaning stage, in which the cleaning stage provides a cleaned non
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: March 31, 2020
    Assignee: BASF SE
    Inventors: John Scott Barratt, Aleksandra Jelicic, Pascal Hesse, Oliver Soetje, Robert Haschick, Gabriela Eugenia Fonseca Zepeda, Shankara Narayanan Keelapandal Ramamoorthy, Sandra Jeck, Jelan Kuhn
  • Publication number: 20190292330
    Abstract: A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.
    Type: Application
    Filed: April 20, 2017
    Publication date: September 26, 2019
    Applicant: BASF SE
    Inventors: Sandra JECK, Oliver SOETJE, Tobias BRINGMANN, Gabriela Eugenia FONSECA ZEPEDA, Dirk MECKELNBURG, Dennis LOESCH, Bjoern LANGLOTZ, John BARRATT, Faissal-Ali EL-TOUFAILI, Hazel SPRAFKE, Bernd SCHUBE, Markus OSTERMAYR
  • Patent number: 10370461
    Abstract: A reverse-phase suspension polymerization process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerizing the monomer or monomer blend, to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point initiating polymerization of the aqueous monomer beads to form polymerizing beads, wherein the polymerizing beads form polymer beads when they reach the polymer bead discharge point, removing a suspensi
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: August 6, 2019
    Assignee: BASF SE
    Inventors: Pascal Hesse, Aleksandra Jelicic, Gabriela Eugenia Fonseca Zepeda, Robert Haschick, Shankara Narayanan Keelapandal Ramamoorthy, Gareth Ian Naylor, John Scott Barratt, Oliver Soetje, Marcel Lievre, Florian Rainau, Mark Lebkuecher
  • Publication number: 20190153300
    Abstract: A method for preparing an aqueous polyacrylamide solution, where the method includes: hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution; directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel; and directly dissolving the polyacrylamide gel by addition of water so as to obtain an aqueous polyacrylamide solution, wherein the polyacrylamide gel is dissolved by water jet cutting.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 23, 2019
    Applicant: BASF SE
    Inventors: Hazel SPRAFKE, Faissal-Ali EL-TOUFAILI, Bjoern LANGLOTZ, John BARRATT, Tobias BRINGMANN, Gabriela Eugenia FONSECA ZEPEDA, Sandra JECK, Dennis LOESCH, Dirk MECKELNBURG, Markus OSTERMAYR, Bernd SCHUBE, Oliver SOETJE
  • Publication number: 20190144574
    Abstract: A method for preparing an aqueous polyacrylamide solution is disclosed. The method comprises:—hydrating acrylonitrile in water in presence of a biocatalyst capable of converting acrylonitrile to acrylamide so as to obtain an acrylamide solution,—directly polymerizing the acrylamide solution so as to obtain a polyacrylamide gel, and—directly dissolving the polyacrylamide gel by addition of water so as to obtain an aqueous polyacrylamide solution.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 16, 2019
    Applicant: BASF SE
    Inventors: Hazel SPRAFKE, Faissal-Ali EL-TOUFAILI, Bjoern LANGLOTZ, John BARRATT, Tobias BRINGMANN, Gabriela Eugenia FONSECA ZEPEDA, Sandra JECK, Dennis LOESCH, Dirk MECKELNBURG, Markus OSTERMAYR, Bernd SCHUBE, Oliver SOETJE
  • Publication number: 20180022837
    Abstract: Disclosed herein is a polymerization process involving the steps of generating monomer micro-volumes in a microfluidic device, feeding the monomer micro-volumes through the at least one first microfluidic channel towards a monomer feed point at which the monomer micro-volumes enter into or onto a volume of a non-aqueous liquid and form aqueous monomer droplets, allowing the aqueous monomer droplets to flow towards a polymer bead discharge point, initiating polymerisation of the aqueous monomer droplets to form polymerising beads, removing a suspension of the polymer beads in the non-aqueous liquid from the vessel at the polymer bead discharge point, and recovering water soluble or water swellable polymer beads from the suspension. The present disclosure also includes an apparatus for performing the polymerization process and water soluble or water swellable polymer beads obtained by the polymerization process.
    Type: Application
    Filed: January 28, 2016
    Publication date: January 25, 2018
    Applicant: BASF SE
    Inventors: Robert HASCHICK, Aleksandra JELICIC, Gabriela Eugenia FONSECA ZEPEDA, Anna RECKMANN, Christian HOLTZE, Bernd STRUBEL
  • Patent number: 9765167
    Abstract: A reverse-phase suspension polymerization process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerizing the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises, providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point subjecting the aqueous monomer beads to polymerization conditions to initiate polymerization to form polymerizing beads, wherein the polymerizing beads have formed polymer beads when they reach the poly
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: September 19, 2017
    Assignee: BASF SE
    Inventors: Robert Haschick, Aleksandra Jelicic, John Scott Barratt, Pascal Hesse, Oliver Soetje, Gabriela Eugenia Fonseca Zepeda, Shankara Narayanan Keelapandal Ramamoorthy, Bjoern Langlotz
  • Patent number: 9732174
    Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerizing the monomer or monomers and transferring the polymerizing monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerized product; iii) flowing the partially polymerized product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerized in the partially polymerized product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerization in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), ch
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: August 15, 2017
    Assignee: BASF SE
    Inventors: Shankara Narayanan Keelapandal Ramamoorthy, Oliver Soetje, John Scott Barratt, Gabriela Eugenia Fonseca Zepeda
  • Patent number: 9382364
    Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerisation in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), char
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: July 5, 2016
    Assignee: BASF SE
    Inventors: Shankara Narayanan Keelapandal Ramamoorthy, Oliver Soetje, John Scott Barratt, Gabriela Eugenia Fonseca Zepeda
  • Publication number: 20160185889
    Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerisation in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), cha
    Type: Application
    Filed: March 4, 2016
    Publication date: June 30, 2016
    Applicant: BASF SE
    Inventors: Shankara Narayanan KEELAPANDAL RAMAMOORTHY, Oliver Soetje, John Scott Barratt, Gabriela Eugenia Fonseca Zepeda
  • Publication number: 20160159939
    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend, to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point initiating polymerisation of the aqueous monomer beads to form polymerising beads, wherein the polymerising beads form polymer beads when they reach the polymer bead discharge point, removing a suspensi
    Type: Application
    Filed: July 29, 2014
    Publication date: June 9, 2016
    Applicant: BASF SE
    Inventors: Pascal HESSE, Aleksandra JELICIC, Gabriela Eugenia FONSECA ZEPEDA, Robert HASCHICK, Shankara Narayanan KEELAPANDAL RAMAMOORTHY, Gareth Ian NAYLOR, John Scott BARRATT, Oliver SOETJE, Marcel LIEVRE, Florian RAINAU, Mark LEBKUECHER
  • Publication number: 20160159958
    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads of an aqueous solution comprising water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, recovering polymer beads, and then cleaning the non-aqueous liquid in which the process comprises providing the non-aqueous liquid in a vessel (1), forming a suspension of monomer beads from the aqueous monomer or monomer blend in the non-aqueous liquid, initiating polymerisation to form polymerising beads, removing a suspension of the polymer beads in non-aqueous liquid from the vessel and recovering, water soluble or water swellable polymer beads from the suspension, in which the non-aqueous liquid contains impurities which comprise particles, and then transferring the non-aqueous liquid from the suspension to a cleaning stage, in which the cleaning stage provides a cleaned non
    Type: Application
    Filed: July 29, 2014
    Publication date: June 9, 2016
    Applicant: BASF SE
    Inventors: John Scott BARRATT, Aleksandra JELICIC, Pascal HESSE, Oliver SOETJE, Robert HASCHICK, Gabriela Eugenia FONSECA ZEPEDA, Shankara Narayanan KEELAPANDAL RAMAMOORTHY, Sandra JECK, Jelan KUHN
  • Publication number: 20160159955
    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises, providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point subjecting the aqueous monomer beads to polymerisation conditions to initiate polymerisation to form polymerising beads, wherein the polymerising beads have formed polymer beads when they reach the poly
    Type: Application
    Filed: July 29, 2014
    Publication date: June 9, 2016
    Applicant: BASF SE
    Inventors: Robert HASCHICK, Aleksandra JELICIC, John Scott BARRATT, Pascal HESSE, Oliver SOETJE, Gabriela Eugenia FONSECA ZEPEDA, Shankara Narayanan KEELAPANDAL RAMAMOORTHY, Bjoern LANGLOTZ
  • Publication number: 20150232600
    Abstract: A process for preparation of a polymer product comprising the steps of i) feeding an aqueous mixture comprising a monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers into a first reactor device (2) through at least one inlet; ii) partially polymerising the monomer or monomers and transferring the polymerising monomer or mixture of monomers from the inlet to an outlet (3) of the first reactor device (2) to provide a partially polymerised product; iii) flowing the partially polymerised product out of the outlet (3), in which no more than 60% of the monomer or mixture of monomers has been polymerised in the partially polymerised product as it exits the outlet (3) of first reactor device (2), and transferring it to a further reactor device (5), in which the further reactor device (5) has an inlet and an outlet (6); iv) continuing the polymerisation in the further reactor device (5) and removing the polymer product from the outlet (6) of the further reactor device (5), char
    Type: Application
    Filed: September 23, 2013
    Publication date: August 20, 2015
    Applicant: BASF SE
    Inventors: Shankara Narayanan Keelapandal Ramamoorthy, Oliver Soetje, John Scott Barrat, Gabriela Eugenia Fonseca Zepeda