Patents by Inventor Wolfgang Podszun

Wolfgang Podszun 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: 7754084
    Abstract: The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) where Ak, Ak?, Ak? are in each case independently of one another identically or differently a C1-C18-alkyl radical, n is an even number between 5 and 18, x+y=2, where x is equal to 0 or 1, and X is Cl, Br, OH, HCO3, HSO4, ½ (SO4), ½ CO3, NO3, F, H2PO4, ½ HPO4, ? PO4 with the result that these anion exchangers, preferably in the OH form, withstand a working temperature of at least 60° C., preferably of at least 80° C., over a relatively long time, a process for production thereof and also use thereof.
    Type: Grant
    Filed: September 4, 2007
    Date of Patent: July 13, 2010
    Assignee: LANXESS Deutschland GmbH
    Inventors: Pierre Vanhoorne, Wolfgang Podszun, Reinhold Klipper, Michael Schelhaas
  • Patent number: 7678865
    Abstract: The present invention relates to mixtures of substances based on organopolysiloxane polyethers and at least one further substance or component, preferably a polymer obtained from aqueous suspension, particularly preferably crosslinked functionalized polystyrene polymer beads, and also to the use of such mixtures of substances based on organopolysiloxane polyether together with crosslinked functionalized polystyrene polymer beads as free-flowing ion exchangers or free-flowing adsorbers, particularly preferably free-flowing monodisperse or heterodisperse anion exchangers or cation exchangers, but also free-flowing mixtures of anion and cation exchangers.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: March 16, 2010
    Assignee: Lanxess Deutschland GmbH
    Inventors: Reinhold Klipper, Wolfgang Podszun, Hanfried Treffurth, Udo Herrmann, Hans-Karl Soest, Ulrich Litzinger
  • Publication number: 20090218289
    Abstract: The present application relates to a process for the adsorption of radionuclides from waters or aqueous solutions such as arise in nuclear plants, by contacting the water to be treated or the aqueous solutions with monodisperse, macroporous ion exchangers.
    Type: Application
    Filed: February 27, 2007
    Publication date: September 3, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Burkhard Brings, Reinhold Klipper, Wolfgang Wambach, Wolfgang Podszun
  • Publication number: 20090158896
    Abstract: The present invention relates to the use of monodisperse, macroporous chelating resins in the recovery of metals in hydrometallurgical processes, in particular in resin-in-pulp processes.
    Type: Application
    Filed: January 26, 2007
    Publication date: June 25, 2009
    Inventors: Duilio Rossoni, Reinhold Klipper, Bruno Hees, Rudolf Wagner, Stefan Neumann, Olaf Halle, Wolfgang Podszun, Michael Schelhaas
  • Patent number: 7462286
    Abstract: The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2 groups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.
    Type: Grant
    Filed: November 6, 2004
    Date of Patent: December 9, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Reinhold Klipper, Bruno Hees, Olaf Halle, Wolfgang Podszun, Pierre Vanhoorne, Hubertus Mittag, Wolfgang Zarges
  • Publication number: 20080255258
    Abstract: The present invention relates to a method for the production of monodisperse acrylic-containing bead polymers, preferably having a particle size of 5 to 500 ?m, and also to their functionalization to give ion exchangers.
    Type: Application
    Filed: January 25, 2005
    Publication date: October 16, 2008
    Inventors: Wolfgang Podszun, Pierre Vanhoorne, Dmitry Chernyshov
  • Publication number: 20080229882
    Abstract: The present invention relates to a process for purifying sulphuric acids, in particular metal-containing sulphuric acids, characterized in that monodisperse ion exchangers having chelating functional groups are used.
    Type: Application
    Filed: August 23, 2004
    Publication date: September 25, 2008
    Inventors: Olaf Halle, Wolfgang Podszun, Bruno Hees, Rheinhold Klipper, Jean-Marc Vesselle
  • Publication number: 20080234398
    Abstract: The present invention relates to a process for producing novel monodisperse cation exchangers of the poly(meth)acrylic acid type, the ion exchangers themselves, and also use thereof and to the use of intermediate products as supports for enzymes and the systems resulting therefrom as enzyme catalysts for the preparation of fuels and in transesterification reactions and esterification reactions.
    Type: Application
    Filed: February 19, 2008
    Publication date: September 25, 2008
    Inventors: Reinhold Klipper, Wolfgang Podszun, Michael Schelhaas, Pierre Vanhoorne, Hans-Karl Soest, Ulrich Litzinger
  • Patent number: 7422691
    Abstract: The present invention relates to a method for the demineralization of water using a combination of a monodisperse cation filter operated as a lift bed and a monodisperse anion filter operated in the cocurrent flow procedure, and also devices which comprise such a lift bed in combination with at least one cocurrent flow filter and if appropriate a trickling degasser and/or a mixed-bed filter.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: September 9, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Burkhard Brings, Wolfgang Podszun
  • Publication number: 20080096987
    Abstract: The present invention relates to a method for the production of monodisperse pore-containing ion exchangers, and also of monodisperse pore-containing bead polymers having a particle size of 10-500 ?m.
    Type: Application
    Filed: August 18, 2005
    Publication date: April 24, 2008
    Inventors: Wolfgang Podszun, Pierre Vanhoorne
  • Publication number: 20080087604
    Abstract: The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) where Ak, Ak?, Ak? are in each case independently of one another identically or differently a C1-C18-alkyl radical, n is an even number between 5 and 18, x+y=2 and X is Cl, Br, OH, HCO3, HSO4, ½ (SO4), ½ CO3, NO3, F, H2PO4, ½ HPO4, ? PO4 with the result that these anion exchangers, preferably in the OH form, withstand a working temperature of at least 60° C., preferably of at least 80° C., over a relatively long time, a process for production thereof and also use thereof.
    Type: Application
    Filed: September 4, 2007
    Publication date: April 17, 2008
    Inventors: Pierre Vanhoorne, Wolfgang Podszun, Reinhold Klipper, Michael Schelhaas
  • Publication number: 20070259046
    Abstract: Process for removal of organic solvents from bead polymers, where the bead polymers are subjected to distillation of the organic solvent with addition of a water-soluble carboxylic acid.
    Type: Application
    Filed: April 30, 2007
    Publication date: November 8, 2007
    Inventors: Pierre Vanhoorne, Rheinhold Klipper, Rudolf Wagner, Wolfgang Podszun, Thomas Linn
  • Publication number: 20070241057
    Abstract: The present invention relates to a process for the preparation of iron oxide/iron oxyhydroxide-containing weakly basic anion exchangers prepared according to the phthalimide process and their use for removing oxo anions and their thio analogues, preferably of arsenic, from water and aqueous solutions and to a regeneration process.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 18, 2007
    Inventors: Reinhold Klipper, Wolfgang Podszun, Stefan Neumann, Holger Schafer, Thomas Linn, Wolfgang Zarges
  • Publication number: 20070241056
    Abstract: The present invention relates to the use of amphoteric ion exchangers for adsorbing oxo anions, preferably to the use of iron oxide/iron oxyhydroxide-containing amphoteric ion exchangers for removing oxo anions from water and aqueous solutions, and to the preparation of these amphoteric iron oxide/iron oxyhydroxide-containing ion exchangers.
    Type: Application
    Filed: April 5, 2007
    Publication date: October 18, 2007
    Inventors: Reinhold Klipper, Wolfgang Podszun, Stefan Neumann, Michael Schelhaas, Holger Schafer, Thomas Linn, Wolfgang Zarges
  • Publication number: 20070215550
    Abstract: The present invention relates to a method for the demineralization of water using a combination of a monodisperse cation filter operated as a lift bed and a monodisperse anion filter operated in the cocurrent flow procedure, and also devices which comprise such a lift bed in combination with at least one cocurrent flow filter and if appropriate a trickling degasser and/or a mixed-bed filter.
    Type: Application
    Filed: February 22, 2007
    Publication date: September 20, 2007
    Inventors: Burkhard Brings, Wolfgang Podszun
  • Patent number: 7265159
    Abstract: Process for preparing monodisperse weakly basic or optionally strongly basic anion exchangers of the poly(meth)acrylamide type, the ion exchangers themselves and their use.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: September 4, 2007
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Olaf Halle, Claudia Schmid, Wolfgang Podszun, Rüdiger Seidel, Hans-Karl Soest
  • Patent number: 7238762
    Abstract: The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: July 3, 2007
    Assignee: Lanxess Deutschland GmbH
    Inventors: Wolfgang Podszun, Olaf Halle, Reinhold Klipper, Rudolf Wagner, Pierre Vanhoorne, Wolfgang Zarges
  • Publication number: 20070084775
    Abstract: The present invention relates to mixtures of substances based on organopolysiloxane polyethers and at least one further substance or component, preferably a polymer obtained from aqueous suspension, particularly preferably crosslinked functionalized polystyrene polymer beads, and also to the use of such mixtures of substances based on organopolysiloxane polyether together with crosslinked functionalized polystyrene polymer beads as free-flowing ion exchangers or free-flowing adsorbers, particularly preferably free-flowing monodisperse or heterodisperse anion exchangers or cation exchangers, but also free-flowing mixtures of anion and cation exchangers.
    Type: Application
    Filed: February 17, 2004
    Publication date: April 19, 2007
    Inventors: Reinhold Klipper, Wolfgang Podszun, Hanfried Treffurth, Udo Herrmann, Hans-Karl Soest, Ulrich Litzinger
  • Publication number: 20070062878
    Abstract: The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2 groups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.
    Type: Application
    Filed: November 6, 2004
    Publication date: March 22, 2007
    Inventors: Reinhold Klipper, Bruno Hees, Olaf Halle, Wolfgang Podszun, Pierre Vanhoorne, Hubertus Mittag, Wolfgang Zarges
  • Publication number: 20070045193
    Abstract: The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 1, 2007
    Inventors: Wolfgang Podszun, Olaf Halle, Reinhold Klipper, Rudolf Wagner, Pierre Vanhoorne, Wolfgang Zarges