Patents by Inventor Karin Flore

Karin Flore 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).

  • Water-absorbent polymer particles
    Patent number: 9073040
    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: Grant
    Filed: April 25, 2013
    Date of Patent: July 7, 2015
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Thomas Daniel, Uwe Stueven, Marco Krüger, Francisco Javier Lopez Villanueva, Norbert Herfert, Karin Flore, Stefan Blei, Michael A. Mitchell
  • 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
  • Water-absorbent porous polymer particles having specific sphericity and high bulk density
    Patent number: 8481159
    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: Grant
    Filed: August 25, 2010
    Date of Patent: July 9, 2013
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Thomas Daniel, Uwe Stueven, Marco Krüger, Francisco Javier Lopez Villanueva, Norbert Herfert, Karin Flore, Stefan Blei, Michael A. Mitchell
  • Process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution
    Patent number: 8450428
    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, which comprises thermal postcrosslinking in the presence of steam.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: May 28, 2013
    Assignee: BASF SE
    Inventors: Thomas Daniel, Marco Krüger, Karin Flore, Stefan Blei, Uwe Stueven, Norbert Herfert, Michael A. Mitchell
  • Process for removing residual monomers from water-absorbing polymer particles
    Patent number: 8299207
    Abstract: A process for removing residual monomers from water-absorbing polymer particles, wherein the water-absorbing polymer particles are thermally aftertreated in a mixer with rotating mixing tools at a temperature of at least 60° C. in the presence of water vapor.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: October 30, 2012
    Assignee: BASF SE
    Inventors: Robert Wengeler, Karin Flore
  • Process for Producing Water-Absorbent Polymer Particles by Polymerizing Droplets of a Monomer Solution
    Publication number: 20110237754
    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, which comprises thermal postcrosslinking in the presence of steam.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Applicant: BASF SE
    Inventors: Thomas Daniel, Marco Krüger, Karin Flore, Stefan Blei, Uwe Stueven, Norbert Herfert, Michael A. Mitchell
  • Process for Removing Residual Monomers from Water-Absorbing Polymer Particles
    Publication number: 20110237767
    Abstract: A process for removing residual monomers from water-absorbing polymer particles, wherein the water-absorbing polymer particles are thermally aftertreated in a mixer with rotating mixing tools at a temperature of at least 60° C. in the presence of water vapor.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Applicant: BASF SE
    Inventors: Robert Wengeler, Karin Flore
  • 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
  • PROCESS FOR PRODUCING A FREE-FLOWING AND STORAGE-STABLE SOLID COMPRISING ESSENTIALLY ALPHA-ALANINE-N,N-DIACETIC ACID AND/OR ONE OR MORE DERIVATIVES OF ALPHA-ALANINE-N,N-DIACETIC ACID
    Publication number: 20100187724
    Abstract: A process is proposed for producing a free-flowing and storage-stable solid comprising essentially ?-alanine-N,N-diacetic acid and/or one or more derivatives of ?-alanine-N,N-diacetic acid proceeding from a powder of ?-alanine-N,N-diacetic acid and/or one or more derivatives of ?-alanine-N,N-diacetic acid by a. compacting the powder of ?-alanine-N,N-diacetic acid on a roller press to obtain slugs, b. crushing the slugs and c. screening the crushed slugs, which comprises performing the compaction on the roller press with addition of polyethylene glycol with a melting point greater than 35° C.
    Type: Application
    Filed: June 30, 2008
    Publication date: July 29, 2010
    Applicant: BASF SE
    Inventors: Robert Heinz, Karin Flore, Lars Kissau, Thomas Heidenfelder, Tanja Seebeck, Frank Mrzena
  • 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