Patents by Inventor Marco KRUEGER

Marco KRUEGER 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).

  • Publication number: 20110130735
    Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer and a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles having a moisture content of at least 8% by weight.
    Type: Application
    Filed: July 30, 2009
    Publication date: June 2, 2011
    Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph
  • Patent number: 7951304
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets and postcrosslinking the polymer particles, wherein the postcrosslinked polymer particles are at least partly coated.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: May 31, 2011
    Assignee: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Wilfried Heide, Marco Krüger
  • Publication number: 20110125119
    Abstract: The present invention relates to fluid-absorbent articles, comprising an upper liquid-pervious layer, a lower liquid-impervious layer, a fluid-absorbent core, wherein the fluid-absorbent core comprises a fibrous material and 10 to 95% by weight of spherical fluid-absorbent polymer particles, and an acquisition distribution layer, wherein the acquisition distribution layer comprises a fibrous material and 0 to 20% by weight of spherical fluid-absorbent polymer particles.
    Type: Application
    Filed: July 30, 2009
    Publication date: May 26, 2011
    Applicant: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph Louden
  • Publication number: 20110112252
    Abstract: A process for thermally surface postcrosslinking water-absorbing polymer particles in a fluidized bed generated by means of a carrier gas, wherein the surface postcrosslinker is supplied to the fluidized bed in gaseous form.
    Type: Application
    Filed: July 3, 2009
    Publication date: May 12, 2011
    Inventors: Stefan Blei, Marco Krüger, Wilfried Heide, Matthias Weismantel, Uwe Stueven
  • Publication number: 20110111231
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase in a reaction chamber, wherein the monomer solution is metered into the reaction chamber via at least one bore, and the diameter is from 210 to 290 ?m per bore and the metering rate is from 0.9 to 5 kg/h per bore.
    Type: Application
    Filed: July 1, 2009
    Publication date: May 12, 2011
    Applicant: BASF SE
    Inventors: Marco Krüger, Stefan Blei, Wilfried Heide, Matthias Weismantel, Uwe Stueven
  • Publication number: 20110105707
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, wherein the monomer solution comprises at least 0.0002% by weight of oxygen and the oxygen content of the gas phase is at least 0.5% by volume.
    Type: Application
    Filed: August 25, 2008
    Publication date: May 5, 2011
    Applicant: BASF SE
    Inventors: Dennis Löesch, Marco Krüger, Uwe Stueven, Wilfried Heide, Matthias Weismantel, Stefan Blei
  • Publication number: 20110059329
    Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130° C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 10, 2011
    Applicant: BASF SE
    Inventors: Rainer Dobrawa, Thomas Daniel, Uwe Stueven, Marco Krüger, Francisco Javier Lopez Villanueva, Norbert Herfert, Michael A. Mitchell
  • Publication number: 20100294988
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the particle surface is coated at least partly with at least one polymer and/or wax.
    Type: Application
    Filed: December 12, 2007
    Publication date: November 25, 2010
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Wilfried Heide, Marco Krüger
  • Publication number: 20100062932
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, said monomer solution comprising at least one azo compound and at least one persulfate, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally at a temperature of at least 100° C. for at least 5 minutes.
    Type: Application
    Filed: February 4, 2008
    Publication date: March 11, 2010
    Applicant: BASF SE a German corporation
    Inventors: Dennis Lösch, Marco Krüger, Stefan Blei, Matthias Weismantel, Wilfried Heide
  • Publication number: 20100035059
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally in the fluidized state in the presence of steam at a temperature of at least 60° C.
    Type: Application
    Filed: February 4, 2008
    Publication date: February 11, 2010
    Applicant: BASF SE
    Inventors: Dennis Lösch, Marco Krüger, Stefan Blei, Matthias Weismantel, Wilfried Heide
  • Publication number: 20100029866
    Abstract: In a process for producing water-absorbing polymeric particles which comprises generating droplets comprising monomers, polymerizing the monomers in a heated gas phase surrounding the droplets and flowing the gas through the polymerization reactor, the temperature of the gas leaving the polymerization reactor is closed-loop controlled.
    Type: Application
    Filed: October 29, 2007
    Publication date: February 4, 2010
    Applicant: BASF SE
    Inventors: Dennis Lösch, Marco Krüger, Matthias Weismantel, Wilfried Heide
  • Publication number: 20100019198
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets and postcrosslinking the polymer particles, wherein the postcrosslinked polymer particles are at least partly coated.
    Type: Application
    Filed: December 12, 2007
    Publication date: January 28, 2010
    Applicant: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Wilfried Heide, Marco Krüger
  • Publication number: 20100016505
    Abstract: A process for producing polymer particles by polymerizing liquid droplets in a gas phase surrounding the droplets, said droplets comprising at least one monomer and being coated with particulate solids during the polymerization.
    Type: Application
    Filed: February 4, 2008
    Publication date: January 21, 2010
    Applicant: BASF SE
    Inventors: Dennis Lösch, Annemarie Hillebrecht, Marco Krüger, Stefan Blei, Matthias Weismantel, Wilfried Heide
  • Publication number: 20100010176
    Abstract: A process for preparing water-absorbing polymer beads by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, the initiator being added to the monomer solution from 0.5 to 60 seconds before the droplets are generated.
    Type: Application
    Filed: October 2, 2007
    Publication date: January 14, 2010
    Applicant: BASF SE
    Inventors: Dennis Lösch, Marco Krüger, Achim Stammer
  • Publication number: 20090315204
    Abstract: A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores into a reaction chamber comprising the gas phase, wherein ratio of length of the feed to greatest diameter of the feed in the region of the multitude of bores is at least 10.
    Type: Application
    Filed: January 10, 2008
    Publication date: December 24, 2009
    Applicant: BASF SE A German Corporation
    Inventors: Dennis Lösch, Carolin Nadine Dücker, Asif Karim, Andreas Daiss, Marco Krüger, Volker Spindler, Stefan Blei, Dieter Ehnes, Oliver Gampfer, Dieter Reimer, Michael Heeger
  • Publication number: 20090275725
    Abstract: The present invention relates to a process for the preparation of polysulfones having a yellowness index according to DIN 6167 of less than 19 and polyether sulfones having a yellowness index according to DIN 6167 of less than 30, wherein the polymerization is carried out in basic, aprotic solvents with the use of a positively conveying stirrer passing close to the wall. The present invention also relates to the polyether sulfones and polysulfones obtainable for the first time by this process and to the use of such polymers for the production of moldings, films, membranes and foams.
    Type: Application
    Filed: June 13, 2007
    Publication date: November 5, 2009
    Applicant: BASF SE
    Inventors: Christian Dienes, Marco Krüger, Stefan Müssig, Jörg Erbes, Achim Stammer, Martin Weber, Karl-Heinz Wassmer, Gerhard Lange
  • Publication number: 20090258994
    Abstract: A process for preparing postcrosslinked water-absorbing polymer beads with high absorption by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the solids content of the monomer solution is at least 35% by weight and the polymer beads have a mean diameter of at least 150 ?m.
    Type: Application
    Filed: July 9, 2007
    Publication date: October 15, 2009
    Applicant: BASF SE
    Inventors: Uwe Stueven, Matthias Weismantel, Wilfried Heide, Marco Krüger, Volker Seidl, Stefan Blei, Dennis Lösch, Rüdiger Funk, Annemarie Hillebrecht
  • Publication number: 20090192035
    Abstract: A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein a water-insoluble inorganic salt is suspended in the monomer solution and the polymer beads have a mean diameter of at least 150 ?m.
    Type: Application
    Filed: July 12, 2007
    Publication date: July 30, 2009
    Applicant: BASF SE
    Inventors: Uwe Stueven, Matthias Weismantel, Wilfried Heide, Marco Krüger, Volker Seidl, Stefan Blei, Dennis Lösch, Rüdiger Funk, Annemarie Hillebrecht
  • Publication number: 20090192036
    Abstract: The invention relates to a method for the production of water absorbent polymer particles by polymerizing drops, comprising at least one monomer in a gas phase surrounding the drops, wherein the drops are produced by surrounding a first monomer solution with a second monomer solution and polymerizing the second monomer solution to a higher cross-linked polymer than the first monomer solution.
    Type: Application
    Filed: October 2, 2007
    Publication date: July 30, 2009
    Inventors: Dennis Lösch, Matthias Weismantel, Marco Krüger, Antje Ziemer