Patents by Inventor Ruediger Funk

Ruediger Funk 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 continuously producing water-absorbing polymer particles
    Patent number: 8829135
    Abstract: A process for continuously producing water-absorbing polymer particles, wherein the acrylic acid used to produce the polymer particles has a low purity.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: September 9, 2014
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Thomas Pfeiffer, Jürgen Schröder
  • Process for producing water-absorbing polymer particles
    Patent number: 8828323
    Abstract: A process for producing water-absorbing polymer particles, wherein a polymer gel is removed from a polymerization reactor, stored intermediately as a particulate polymer gel in a delay vessel, removed by means of a first conveying device at the lower end of the delay vessel and dried, the intermediately stored particulate polymer gel being conveyed within the delay vessel by means of at least one second conveying device above the first conveying device in the direction of the first conveying device.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: September 9, 2014
    Assignee: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Ann Becker, Leo Van Miert
  • Fluid-absorbent articles
    Patent number: 8796174
    Abstract: The present invention relates to a process for producing fluid-absorbent cores, comprising mixing a fibrous material and fluid-absorbent polymer particles having low moisture content and low apparent density and pressing the obtained mixture under specific conditions.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: August 5, 2014
    Assignee: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, Sylvia Bertha, John Joseph Louden
  • Method for producing water-absorbing polymer particles
    Patent number: 8789774
    Abstract: A process for producing water-absorbing polymer particles, wherein an aqueous polymer gel is applied by means of a swivel belt to the conveyor belt of a forced-air belt drier, and the swivel belt, proceeding from one end position, is accelerated through a first pivot angle to an angular speed v1, decelerated through a second pivot angle to an angular speed v2 and decelerated through a third pivot angle to the other end position.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: July 29, 2014
    Assignee: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Dominicus van Esbroeck, Ronny De Kaey
  • Process for continuously producing water-absorbing polymer particles
    Patent number: 8785583
    Abstract: A process for continuously producing water-absorbing polymer particles by polymerizing a monomer solution comprising acrylic acid and/or salts thereof, wherein the acrylic acid supplied has a dimeric acrylic acid content of at least 0.02% by weight and the dimeric acrylic acid content is kept essentially constant.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 22, 2014
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Thomas Pfeiffer, Jürgen Schröder
  • Process for producing water-absorbing polymer particles
    Patent number: 8765898
    Abstract: The invention relates to a process for producing water-absorbing polymer particles, comprising handling water-absorbing polymer particles in intermediate silos, storage silos and/or big bag filing stations that are connected with vent lines having a mitered joint.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: July 1, 2014
    Assignee: BASF SE
    Inventors: Monte Peterson, Ronny De Kaey, Leo Van Miert, Oskar Stephan, Rüdiger Funk, Matthias Weismantel, Dominicus van Esbroeck, Frans van Dyck
  • Method for producing water-absorbent polymer particles with a higher permeability by polymerizing droplets of a monomer solution
    Patent number: 8748000
    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: Grant
    Filed: July 12, 2007
    Date of Patent: June 10, 2014
    Assignee: BASF SE
    Inventors: Uwe Stueven, Matthias Weismantel, Wilfried Heide, Marco Krüger, Volker Seidl, Stefan Blei, Dennis Loesch, Rüdiger Funk, Annemarie Hillebrecht
  • METHOD FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES
    Publication number: 20140107305
    Abstract: A process for producing water-absorbing polymer particles, comprising the addition of a solid additive to a polymer gel by means of a conveying screw (1), wherein the solid additive and a gas volume flow are fed to the conveying screw (1) by means of an addition channel (2).
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Dominicus van Esbroeck, Filip Mees
  • Fluid-absorbent articles
    Patent number: 8669410
    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: Grant
    Filed: July 30, 2009
    Date of Patent: March 11, 2014
    Assignee: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, John Joseph Louden
  • PROCESS FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES
    Publication number: 20140066584
    Abstract: The invention relates to a process for producing water-absorbing polymer particles, comprising polymerization, drying the resulting polymer gel on a through circulation belt dryer, crushing the dried polymer gel, pre-grinding, separating of incompletely dried particles with a perforated plate, grinding and classifying the resulting polymer particles.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 6, 2014
    Applicant: BASF SE
    Inventors: Monte Peterson, John Perry Guentzel, Gregory Boykin, Leo Van Miert, Rene Callot, Oskar Stephan, Rüdiger Funk, Matthias Weismantel
  • PROCESS FOR PRODUCING WATER-ABSORBING POLYMER PARTICLES
    Publication number: 20140066582
    Abstract: The invention relates to a process for producing water-absorbing polymer particles, comprising thermal postcrosslinking in a contact dryer having external heated outer surfaces.
    Type: Application
    Filed: August 26, 2013
    Publication date: March 6, 2014
    Inventors: Monte Peterson, Filip Mees, John Perry Guentzel, Justin Martin, Dominicus van Esbroeck, Karl J. Possemiers, Leo Van Miert, Oskar Stephen, Rüdiger Funk, Mathhias Welsmantel
  • Process for pneumatic conveying of water-absorbing polymer particles
    Patent number: 8651773
    Abstract: A process for pneumatic delivery of water-absorbing polymer particles, the initial gas rate in the delivery being from 1 to 6 m/s and the delivery material loading being from 1 to 100 kg/kg.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: February 18, 2014
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Hermann Josef Feise, Hanno Rüdiger Wolf
  • Method for producing water-absorbing polymer particles
    Patent number: 8633285
    Abstract: A process for producing water-absorbing polymer particles, comprising the addition of a solid additive to a polymer gel by means of a conveying screw (1), wherein the solid additive and a gas volume flow are fed to the conveying screw (1) by means of an addition channel (2).
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: January 21, 2014
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Dominicus van Esbroeck, Filip Mees
  • Process for Producing Water-Absorbing Polymer Particles in a Polymerization Reactor with At Least Two Axially Parallel Rotating Shafts
    Publication number: 20130338325
    Abstract: A process for producing water-absorbing polymer particles by polymerizing an aqueous monomer solution in a polymerization reactor with at least two axially parallel rotating shafts, wherein the polymerization is performed in the presence of an inert gas and under positive pressure.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Inventors: Monte Peterson, Karl J. Possemiers, Ronny De Kaey, Dominicus van Esbroeck, Rüdiger Funk
  • Method for the production of water-absorbing polymer particles
    Patent number: 8608096
    Abstract: A process for producing water-absorbing polymer particles, comprising classification by means of a tumbler screening machine, wherein the tumbler screening machine used for classification is equipped with at least one ball knock cleaning system and entrained balls are removed outside the tumbler screening machine by means of a capture device.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: December 17, 2013
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Jürgen Schröder, Emil Bitzer
  • Method for the continuous production of water-absorbent polymer particles
    Patent number: 8610097
    Abstract: A process for continuously preparing water-absorbing polymer beads by determining at least one particulate delivery material mass flow by means of incident electromagnetic waves.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: December 17, 2013
    Assignee: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Filip Mees, Koen Deboel
  • Method for the pneumatic conveying of water-absorbent polymer particles
    Patent number: 8591152
    Abstract: A process for pneumatic delivery of water-absorbing polymer particles, the compressor used for pneumatic delivery having a steep characteristic and the initial gas rate in the delivery corresponding to a Froude number of from 10 to 18.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: November 26, 2013
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Hanno Rüdiger Wolf, Hermann Josef Feise
  • Method for the Continuous Production of Water Absorbent Polymer Particles
    Publication number: 20130276325
    Abstract: A process for continuously preparing water-absorbing polymer beads, comprising the drying of a polymer gel on a forced-air belt dryer, the water content of the polymer gel being used to control the forced-air belt dryer during or after the drying.
    Type: Application
    Filed: June 24, 2013
    Publication date: October 24, 2013
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Karl J. Possemiers, Koen Deboel
  • Method for the continuous production of water-absorbent polymer particles
    Patent number: 8546461
    Abstract: The present invention relates to a method for producing water-absorbing polymer particles by radiation-inducing polymerization on a continuously revolving belt, electromagnetic radiation having a wavelength of greater than 400 nm being shielded.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: October 1, 2013
    Assignee: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus
  • Process for producing water-absorbing particles
    Patent number: 8541528
    Abstract: A process for producing water-absorbing polymer particles, wherein an aqueous polymer gel is dried in a forced-air belt drier on a circulating conveyor belt and the surface of the conveyor belt has a multitude of elevations or depressions which are suitable for restricting the mobility of the aqueous polymer gel in transverse direction.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: September 24, 2013
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Thomas Pfeiffer, Matthias Weismantel, Stefan Blei, Wilfried Heide, Volker Braig, Thomas Gieger, Andreas Brockmeyer