Patents by Inventor Reinhold Klipper

Reinhold Klipper 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).

  • Process for preparing selective ion exchangers
    Patent number: 6610753
    Abstract: The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and (II) wherein X represents hydrogen or an alkali metal ion, by reacting a weak-base anion exchanger bearing primary amino groups with monochloro-acetic acid and/or an alkali metal salt of monochloroacetic acid at a temperature of from 70 to 110° C. and a pH of from 7 to 11.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: August 26, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Holger Lütjens, Klaus Rall, Axel Ingendoh, Reinhold Klipper
  • Monodisperse anion exchangers
    Publication number: 20030114544
    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: Application
    Filed: November 19, 2002
    Publication date: June 19, 2003
    Inventors: Reinhold Klipper, Olaf Halle, Claudia Schmid, Wolfgang Podszun, Rudiger Seidel, Hans-Karl Soest
  • Process for the preparation of monodisperse gel-type cation exchangers
    Publication number: 20020195392
    Abstract: The invention relates to a process for preparing gel-type cation exchangers of high osmotic and mechanical stability and enhanced stability to oxidation by a seed/feed process, the seed used being a polymer containing 3.5-7% by weight of crosslinker.
    Type: Application
    Filed: April 30, 2002
    Publication date: December 26, 2002
    Inventors: Claudia Schmid, Wolfgang Podszun, Rudiger Seidel, Reinhold Klipper, Ralf-Jurgen Born, Olaf Halle, Ulrich Schnegg
  • PROCESS FOR PREPARING SELECTIVE ION EXCHANGERS
    Publication number: 20020193454
    Abstract: The present invention relates to a process for preparing selective ion exchangers based on crosslinked vinylaromatic polymers and containing iminoacetic acid units of the general formulas (I) and (II) 1
    Type: Application
    Filed: August 10, 1999
    Publication date: December 19, 2002
    Inventors: HOLGER LUTJENS, KLAUS RALL, AXEL INGENDOH, REINHOLD KLIPPER
  • Process for preparing heterodisperse chelating resins
    Publication number: 20020185443
    Abstract: The object of the present invention is a process for preparing novel heterodisperse chelating resins having chelating functional groups, and their use for adsorbing metal compounds, in particular alkaline earth metals, heavy metal compounds and precious metal compounds, and also for extracting alkaline earth metals from saline solutions derived from alkali metal chloride electrolysis, and also in hydrometallurgy.
    Type: Application
    Filed: April 29, 2002
    Publication date: December 12, 2002
    Inventors: Reinhold Klipper, Rudiger Seidel, Bruno Hees, Dieter Irmscher, Bernhard Lehmann, Holger Lutjens, Ulrich Schnegg, Wolfgang Zarges
  • Process for the preparation of cation exchangers in gel form
    Publication number: 20020153323
    Abstract: Spherical copolymers prepared by a seed/feed process with a feed comprising vinylaromatic compounds, divinylbenzene, methyl acrylate, and free-radical initiator can be converted into cation exchangers in gel form having high stability and purity by sulfonation in the absence of a swelling agent.
    Type: Application
    Filed: January 29, 2002
    Publication date: October 24, 2002
    Inventors: Wolfgang Podszun, Ulrich Schnegg, Reinhold Klipper, Claudia Schmid
  • Process for preparing stable gel-type cation exchangers
    Publication number: 20020143109
    Abstract: The invention relates to a process for preparing stable gel-type cation exchangers by sulfonating acrylonitrile-containing bead polymers, to the gel-type cation exchangers themselves, and to their uses.
    Type: Application
    Filed: October 9, 2001
    Publication date: October 3, 2002
    Inventors: Wolfgang Podszun, Glandia Schmid, Rudiger Seidel, Reinhold Klipper
  • Sugar juice decolorization by means of mondisperse anion exchangers
    Publication number: 20020088755
    Abstract: The present invention relates to a process for decolorizing sugar juices by means of monodisperse ion exchangers, preferably anion exchangers, and the use of the same for sugar juice decolorization.
    Type: Application
    Filed: November 9, 2001
    Publication date: July 11, 2002
    Inventors: Hans-Karl Soest, Reinhold Klipper, Ulrich Schnegg, Martin Gladysch
  • Iodine resins
    Publication number: 20020074288
    Abstract: The present invention relates to a process for preparing monodisperse ion exchangers having polyiodide groups, the resins themselves and their use for drinking water treatment and drinking water disinfection.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 20, 2002
    Inventors: Michael Happ, Werner Struver, Reinhold Klipper, Ulrich Schnegg, Hans-Karl Soest, Helmut Schaffrath
  • Process for removing arsenic compounds from the distillation bottoms from the preparation of hydrogen fluoride
    Publication number: 20020063052
    Abstract: The invention relates to a novel process for removing arsenic compounds using amino/ammonium-functionalized anion exchangers from the distillation bottoms obtained in the purification of hydrogen fluoride by distillation.
    Type: Application
    Filed: October 4, 2001
    Publication date: May 30, 2002
    Inventors: Axel Peters, Gunter Lailach, Reinhold Klipper
  • Use of monodisperse ion exchangers for arsenic and/or antimony removal
    Publication number: 20020042450
    Abstract: The present invention relates to the use of monodisperse ion exchangers, particularly monodisperse anion exchangers or monodisperse chelating resins, for the selective removal of arsenic and/or antimony in the form of AsF6− ions or SbF6− ions from aqueous solutions.
    Type: Application
    Filed: October 4, 2001
    Publication date: April 11, 2002
    Inventors: G?uuml;nter Lailach, Reinhold Klipper
  • Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds
    Publication number: 20020035216
    Abstract: The present invention relates to a process for preparing novel, monodisperse crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds, in particular heavy metal compounds or noble metal compounds.
    Type: Application
    Filed: October 15, 2001
    Publication date: March 21, 2002
    Inventors: Reinhold Klipper, Werner Struver, Ulrich Schnegg, Heiko Hoffmann, Dieter Mauer, Bernhard Lehmann, Bruno Hees, Holger Lutjens
  • Sulfonation process
    Publication number: 20020022671
    Abstract: The present invention relates to a process for preparing strongly acidic macroporous or strongly acidic monodisperse-gel-type ion exchangers, particularly macroporous monodisperse, macroporous heterodisperse, or monodisperse-gel-type cation exchangers, by treating the respective basis polymer with sulfuric acid in stepwise cycles at graded concentrations. The invention further relates to the cation exchangers prepared by this process and to their uses.
    Type: Application
    Filed: July 5, 2001
    Publication date: February 21, 2002
    Inventors: Reinhold Klipper, Rudolf Wagner, Rudiger Seidel, Holger Lutjens, Axel Ingendoh, Ulrich Schnegg
  • Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds
    Patent number: 6329435
    Abstract: The present invention relates to a process for preparing novel, monodisperse crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds, in particular heavy metal compounds or noble metal compounds.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: December 11, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Heiko Hoffmann, Dieter Mauer, Bernhard Lehmann, Bruno Hees, Holger Lütjens
  • Process for gas adsorption using aminomethylated bead polymers
    Publication number: 20010043881
    Abstract: The present invention relates to a process for gas adsorption, in particular of acidic gases, using monodisperse aminomethylated bead polymers.
    Type: Application
    Filed: May 9, 2001
    Publication date: November 22, 2001
    Inventors: Rudolf Wagner, Ulrich Schnegg, Wolfgang Wambach, Reinhold Klipper
  • Process for preparing monodisperse cation-exchanger gels
    Publication number: 20010036968
    Abstract: The invention relates to a process for preparing monodisperse cation-exchanger gels with increased oxidation resistance and with high osmotic stability and purity by
    Type: Application
    Filed: April 17, 2001
    Publication date: November 1, 2001
    Inventors: Claudia Schmid, Wolfgang Podszun, Rudiger Seidel, Olaf Halle, Ralf-Jurgen Born, Reinhold Klipper
  • Process for preparing crosslinked ion exchangers based on unsaturated aliphatic nitriles
    Publication number: 20010006159
    Abstract: The present invention relates to a process for preparing crosslinked ion exchangers with a homogeneous network structure based on unsaturated aliphatic nitrites in the presence of film-forming protective colloids.
    Type: Application
    Filed: December 14, 2000
    Publication date: July 5, 2001
    Inventors: Michael Happ, Ralf-Jurgen Born, Reinhold Klipper, Ulrich Schnegg, Hans-Karl Soest, Wolfgang Zarges
  • Process for decreasing the chlorine content of organic isocyanates
    Patent number: 6222066
    Abstract: A process for the purification of organic isocyanates or isocyanate mixtures in which the amount of chlorine compound(s) present is reduced by mixing the isocyanate(s) or isocyanate mixtures with a gel-type or macroporous, anion-exchanging organic material having tertiary and/or quaternary amino groups. The process renders possible a purification of the isocyanates from chlorine-containing compounds which is milder than in conventional processes and is therefore particularly suitable for temperature-sensitive isocyanates.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: April 24, 2001
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karsten Danielmeier, Harald Leps, Dieter Mager, Reinhard Halpaap, Martin Brahm, Reinhold Klipper, Andreas Hauner
  • Process for preparing weakly-basic anion exchangers and reagents suitable for this purpose
    Patent number: 5464875
    Abstract: An improved aminomethylation process gives weakly-basic anion exchangers in an elegant way, with by-product obtained being able to be processed into a suitable starting material without problems.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: November 7, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Stefan Antons, Guido Steffan, Alfred Mitschker, Werner Struver, Holger Lutjens
  • N-phenyl-N'-vinylethyleneureas
    Patent number: 4587347
    Abstract: Substituted ethyleneureas are prepared by reacting appropriate .beta.-hydroxyethylureas with alkyl carbonates in the presence of catalysts at an elevated temperature.Substituted ethyleneureas are used, inter alia, as polymerization and copolymerization components for the preparation of plastics, coatings, surface finishes and ion exchangers.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: May 6, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Reinhold Klipper, Peter M. Lange, Peter Mues