Patents by Inventor Holger Barthel

Holger Barthel 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).

  • Single-shaft extruder and use of a single-shaft extruder, and method for altering morphology of a superabsorbent polymer, specifically an SAP polymer gel, using a single-shaft extruder
    Patent number: 11560456
    Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: January 24, 2023
    Assignee: BASF SE
    Inventors: Monica Haag, Stephan Deuerlein, Roland Krauss, Volker Klock, Holger Barthel
  • Single-shaft extruder and use of a single-shaft extruder, and method for altering morphology of a superabsorbent polymer gel using a single-shaft extruder
    Patent number: 11458665
    Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 4, 2022
    Assignee: BASF SE
    Inventors: Monica Haag, Stephan Deuerlein, Holger Barthel, Volker Klock, Roland Krauss
  • SINGLE-SHAFT EXTRUDER AND USE OF A SINGLE-SHAFT EXTRUDER, AND METHOD FOR ALTERING MORPHOLOGY OF A SUPERABSORBENT POLYMER, SPECIFICALLY AN SAP POLYMER GEL, USING A SINGLE-SHAFT EXTRUDER
    Publication number: 20190330426
    Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.
    Type: Application
    Filed: December 15, 2017
    Publication date: October 31, 2019
    Inventors: Monica Haag, Stephan Deuerlein, Roland Krauss, Volker Klock, Holger Barthel
  • SINGLE-SHAFT EXTRUDER AND USE OF A SINGLE-SHAFT EXTRUDER, AND METHOD FOR ALTERING MORPHOLOGY OF A SUPERABSORBENT POLYMER GEL USING A SINGLE-SHAFT EXTRUDER
    Publication number: 20190308358
    Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.
    Type: Application
    Filed: December 15, 2017
    Publication date: October 10, 2019
    Inventors: Monica Haag, Stephan Deuerlein, Holger Barthel, Volker Klock, Roland Krauss
  • Method for coating water-absorbing polymer particles
    Patent number: 8663734
    Abstract: A process for preparing water-absorbing polymer particles by spraying a liquid below the product bed surface by means of at least one spray nozzle in a mixer with moving mixing tools.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: March 4, 2014
    Assignee: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt, Jeff Vogt
  • Method for coating water-absorbing polymer particles
    Patent number: 8663733
    Abstract: A process for preparing water-absorbing polymer particles by spraying a liquid onto water-absorbing polymer particles by means of at least one thermally insulated and/or trace-heated spray nozzle in a mixer.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: March 4, 2014
    Assignee: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt, Karin Flore
  • Method for coating water-absorbing polymer particles
    Patent number: 8603577
    Abstract: A process for preparing water-absorbing polymer particles by coating water-absorbing polymer particles with a particulate solid in a mixer, wherein the particulate solid is dispersed by means of a gas stream and the supply of the dispersed particulate solid in the mixer ends below the product bed surface.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: December 10, 2013
    Assignee: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt
  • Process for Thermal Postcrosslinking in a Drum Heat Exchanger with an Inverse Screw Helix
    Publication number: 20130260032
    Abstract: A process for thermal surface postcrosslinking of water-absorbing polymer particles, wherein the polymer particles are coated with an aqueous solution, the coated polymer particles are deagglomerated and the deagglomerated polymer particles are thermally surface postcrosslinked by means of a drum heat exchanger with an inverse screw helix.
    Type: Application
    Filed: March 22, 2013
    Publication date: October 3, 2013
    Applicant: BASF SE
    Inventors: Holger Barthel, Gerald Gruenewald, Norbert Herfert, Markus Muehl, Birgit Reinhard
  • Coating Process for Water-Absorbing Polymer Particles
    Publication number: 20120058267
    Abstract: A coating process wherein an aqueous liquid is sprayed onto surface postcrosslinked water-absorbing polymer particles in a horizontal mixer and the inner wall of the horizontal mixer which is in contact with the product is made from a stainless steel.
    Type: Application
    Filed: May 10, 2010
    Publication date: March 8, 2012
    Applicant: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Holger Barthel, Oskar Stephan
  • Process for Producing Re-Moisturised Surface-Crosslinked Superabsorbents
    Publication number: 20100323885
    Abstract: Re-moisturised, surface-crosslinked superabsorbents are produced using a process that comprises the steps of contacting a superabsorbent base polymer with an organic crosslinker and a polyvalent metal salt solution in the presence of an alcohol, heat-treating to produce a surface-crosslinked, dry superabsorbent and re-moisturising the surface-crosslinked dry superabsorbent.
    Type: Application
    Filed: March 10, 2008
    Publication date: December 23, 2010
    Applicant: BASF SE a German corporation
    Inventors: Norbert Herfert, Martin Wendker, Holger Barthel, William G-J Chiang
  • PROCESS FOR THE CONTINUOUS GRANULATION OF FERTILIZERS
    Publication number: 20100263420
    Abstract: The present invention relates to a process for the preparation of fertilizer granules. The process is particularly suitable for the preparation of finely divided fertilizer granules. Furthermore, the invention relates to the granulated fertilizers obtainable by this process, and to their use for fertilizing agricultural and/or horticultural crops.
    Type: Application
    Filed: September 19, 2007
    Publication date: October 21, 2010
    Applicant: BASF SE
    Inventors: Karin Flore, Holger Barthel, Reiner Witt, Bernhard Purucker, Michael Mauss
  • Method for the Continuous Mixing of Polymer Particles
    Publication number: 20100140546
    Abstract: In a process for continuous mixing of water-absorbing polymeric particles with liquids or other particles while the polymeric particles move in the product stream direction under their own weight, at least a portion of the material undergoing mixing acquires, through the rotational movement of at least one mixing tool secured to a rotating shaft, a momentum opposite the product stream direction.
    Type: Application
    Filed: November 30, 2006
    Publication date: June 10, 2010
    Applicant: BASF SE
    Inventors: Holger Barthel, Matthias Weismantel, Karin Ax, Wolfgang Kanther
  • Method for Coating Water-Absorbing Polymer Particles
    Publication number: 20100112200
    Abstract: A process for preparing water-absorbing polymer particles by coating water-absorbing polymer particles with a particulate solid in a mixer, wherein the particulate solid is dispersed by means of a gas stream and the supply of the dispersed particulate solid in the mixer ends below the product bed surface.
    Type: Application
    Filed: March 17, 2008
    Publication date: May 6, 2010
    Applicant: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt
  • Method for Coating Water-Absorbing Polymer Particles
    Publication number: 20100104761
    Abstract: A process for preparing water-absorbing polymer particles by spraying a liquid below the product bed surface by means of at least one spray nozzle in a mixer with moving mixing tools.
    Type: Application
    Filed: March 17, 2008
    Publication date: April 29, 2010
    Applicant: BASF SE
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt, Jeff Vogt
  • Method for Coating Water-Absorbing Polymer Particles
    Publication number: 20100047445
    Abstract: A process for preparing water-absorbing polymer particles by spraying a liquid onto water-absorbing polymer particles by means of at least one thermally insulated and/or trace-heated spray nozzle in a mixer.
    Type: Application
    Filed: March 17, 2008
    Publication date: February 25, 2010
    Inventors: Holger Barthel, Martin Wendker, Reiner Witt, Karin Flore
  • Coated preparations that contain at least one hydroformate
    Publication number: 20060141010
    Abstract: The present invention relates to coated or liquid preparations comprising at least one hydroformate of the general formula (I) M3[HCOO]3.HCOOH ??(I) where M=Na, K, Cs, NH4, and the use thereof.
    Type: Application
    Filed: June 11, 2004
    Publication date: June 29, 2006
    Applicant: Basf Aktiengesellschaft
    Inventors: Jorn Karl, Gerd Diebold, Andreas Habich, Holger Barthel