Patents by Inventor Ulrich Schnegg

Ulrich Schnegg 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 monodisperse ion exchangers having chelating functional
    Patent number: 7077964
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: July 18, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
  • Process for preparing monodisperse anion exchangers
    Patent number: 7053129
    Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers by (a) reacting monomer droplets made from monovinylaromatic compounds and polyvinylaromatic compounds, and optional porogens and/or initiators, (b) amidomethylating the resultant monodisperse, crosslinked bead polymers with phthalimide derivatives, (c) converting the amidomethylated bead polymers to aminomethylated bead polymers, and (d) alkylating the aminomethylated bead polymers.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: May 30, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Rüdiger Seidel, Alfred Mitschker, Holger Lütjens
  • Sugar juice decolorization by means of mondisperse anion exchangers
    Patent number: 6942805
    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: Grant
    Filed: November 9, 2001
    Date of Patent: September 13, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Karl Soest, Reinhold Klipper, Ulrich Schnegg, Martin Gladysch
  • Process for preparing monodisperse ion exchangers having chelating functional
    Publication number: 20040082744
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Application
    Filed: October 17, 2003
    Publication date: April 29, 2004
    Inventors: Reinhold Klipper, Werner Struver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lutjens
  • Method for conditioning ion exchangers
    Patent number: 6723881
    Abstract: Monodisperse cation-exchangers and anon-exchangers are conditioned by a process and thereafter used as catalysts and for the production of bisphenols.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: April 20, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Bödiger, Rainer Neumann, Frieder Heydenreich, Michael Prein, Gerhard Fennhoff, Ulrich Schnegg, Rudolf Wagner, Wolfgang Wambach, Reinhold Klipper
  • Process for preparing monodisperse anion exchangers having strongly basic functional groups
    Patent number: 6699913
    Abstract: The present invention relates to a process for preparing novel, monodisperse anion exchangers having strongly basic functional groups either in the center of the resin particle or in the shell of the resin particle, as well as to their use.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: March 2, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Ulrich Schnegg, Rüdiger Seidel, Hans-Karl Soest, Alfred Mitschker, Holger Lütjens
  • Process for preparing crosslinked ion exchangers based on unsaturated aliphatic nitriles
    Patent number: 6696503
    Abstract: The present invention relates to a process for preparing crosslinked ion exchangers with a homogeneous network structure based on unsaturated aliphatic nitriles in the presence of film-forming protective colloids.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: February 24, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Happ, Ralf-Jürgen Born, Reinhold Klipper, Ulrich Schnegg, Hans-Karl Soest, Wolfgang Zarges
  • Process for preparing monodisperse ion exchangers having chelating functional groups and the use thereof
    Patent number: 6649663
    Abstract: The present invention relates to a process for preparing novel, monodisperse ion exchangers having chelating functional groups, and their use for adsorbing metal compounds, in particular, heavy metal compounds and noble metal compounds, and also for extracting alkaline-earth metals from saline solutions from alkali metal chloride electrolysis.
    Type: Grant
    Filed: August 21, 2000
    Date of Patent: November 18, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhold Klipper, Werner Strüver, Ulrich Schnegg, Bruno Hees, Bernhard Lehmann, Holger Lütjens
  • 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 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
  • 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 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 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 preparing monodisperse adsorber resins and their use
    Publication number: 20010002656
    Abstract: The present invention relates to a process for preparing mono-disperse adsorber resin gels by polymerizing monomer droplets to give monodisperse polymers, followed by haloalkylating and crosslinking the resultant polymers, and also relates to the use of these resins.
    Type: Application
    Filed: November 29, 2000
    Publication date: June 7, 2001
    Inventors: Ulrich Schnegg, Georg Martin, Lothar Feistel, Werner Struver, Michael Holzbrecher
  • Process for preparing triazoles fused with aromatic systems by reaction of o-arylenediamines with nitrites
    Patent number: 4918195
    Abstract: Triazoles fused with aromatic systems are prepared by reaction of o-arylenediamines with nitrites and subsequent purification by distillation, the distillation being carried out in the presence of an alkaline substance.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: April 17, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Schnegg, Ulrich Bormann