Patents by Inventor Matthias Weismantel

Matthias Weismantel 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).

  • 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
  • Production of water-absorbing polymeric particles by dropletization polymerization in the gas phase
    Patent number: 7727586
    Abstract: A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: June 1, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Bruhns, Volker Frenz, Dennis Lösch, Volker Seidl, Uwe Stueven, Carolin Nadine Dücker, Matthias Weismantel, Wilfried Heide, Stefan Blei
  • Production of Superabsorbent Polymers on a Continuous Belt Reactor
    Publication number: 20100099791
    Abstract: The invention relates to the production of superabsorbent polymers comprising polymerizing a monomer solution on a continuous belt reactor, wherein the consistency of the formed polymer gel at the end of the continuous belt reactor is controlled by adjusting the intensity of energy-rich radiation.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 22, 2010
    Applicant: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Sylvia Bertha, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Production of Superabsorbent Polymers on a Continuous Belt Reactor
    Publication number: 20100083802
    Abstract: The invention relates to the production of superabsorbent polymers on a continuous belt reactor, comprising at least one rotating knife that cuts the formed polymer gel at the end of the continuous belt reactor, wherein the length of the cutting edge is at least 1 cm and the cutting edge is non-parallel to the rotation axis.
    Type: Application
    Filed: January 10, 2008
    Publication date: April 8, 2010
    Applicant: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution
    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
  • Transportation of a Monomer Composition in a Transport Means or Pipe
    Publication number: 20100056739
    Abstract: The invention relates to a method for the transportation of a monomer composition in which a composition comprising an aqueous solution of partially or entirely neutralized acrylic acid or overneutralized acrylic acid is placed in a transport means or sent through a pipe. The method according to the invention is characterized in that it has an increased level of safety during the transportation of acrylic acid monomers, an improved quality of the resulting product, and a high degree of efficiency. The method ensures safe transport of the highly reactive acrylic acid. The amount of polymerization inhibitors added to said acrylic acid may be reduced. An additional advantage is the minimization of the formation of dimeric acrylic acid. Tempering of containers, pipes, and pipelines may be omitted.
    Type: Application
    Filed: March 20, 2008
    Publication date: March 4, 2010
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Wilfried Heide, Matthias Weismantel, Ulrich Hammon, Andrea Karen Bennett
  • Production of Superabsorbent Polymers
    Publication number: 20100041549
    Abstract: The invention relates to the production of superabsorbent polymers comprising conveying a polymer gel having acid groups on an oscillating conveyor belt to a continuous through-circulation belt dryer, wherein the belt speed of the conveyor belt is at least 0.4 m/s.
    Type: Application
    Filed: January 14, 2008
    Publication date: February 18, 2010
    Applicant: BASF SE a German corporation
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Production of Superabsorbent Polymers on a Continuous Belt Reactor
    Publication number: 20100041847
    Abstract: The invention relates to a process for production of superabsorbent polymers on a continuous belt reactor, wherein a continuous polymerization belt rests at least partly upon the upper surface of at least one continuous support belt and the at least one continuous support belt slides at least partly on a fixed surface.
    Type: Application
    Filed: January 10, 2008
    Publication date: February 18, 2010
    Applicant: BASF SE a German corporation
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution
    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
  • Regulation of a Process for Producing Water-Absorbing Polymer Particles in a Heated Gas Phase
    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
  • Method for Producing Mechanically Stable Water-Absorbent Polymer Particles
    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
  • Method for Producing Polymer Particles by the Polymerization of Liquid Droplets in a Gas Phase
    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
  • Method for the Continuous Production of Water Absorbent Polymer Particles
    Publication number: 20100016522
    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: September 24, 2007
    Publication date: January 21, 2010
    Applicant: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Karl J. Possemiers, Koen Deboel
  • Production of Super Absorbent Polymers on a Continuous Belt Reactor
    Publication number: 20100010173
    Abstract: The invention relates lo a process for production of super absorbent polymers on a continuous belt reactor, wherein a continuous polymerization belt rests at least partly upon the upper surface of at least one continuous support belt.
    Type: Application
    Filed: January 10, 2008
    Publication date: January 14, 2010
    Applicant: BASF SE
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Process for Producing Water-Absorbing Polymer Particles
    Publication number: 20100010184
    Abstract: A process for producing water-absorbing polymer particles by neutralizing the monomer and cooling it by means of an indirect heat exchanger, wherein the specific cooling performance of the heat exchanger is less than 10 W/m2.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 14, 2010
    Applicant: BASF SE
    Inventors: Matthias Weismantel, Rudiger Funk, Leigh R. Blair, Kevin D. Heitzhaus
  • Method for the Continuous Production of Water-Absorbent Polymer Particles
    Publication number: 20090321664
    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: Application
    Filed: September 24, 2007
    Publication date: December 31, 2009
    Applicant: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Filip Mees, Koen Deboel
  • Method for Producing Water-Absorbing Polymer Particles by Polymerizing Droplets of a Monomer Solution
    Publication number: 20090318582
    Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution, where the monomer solution comprises at least two initiators, one of the initiators is a peroxide with the exception of persulfate, and the molar ratio of peroxide to further initiator is at least 1:8, the water-absorbing polymer particles themselves, and hygiene articles comprising these water-absorbing polymer particles.
    Type: Application
    Filed: July 12, 2007
    Publication date: December 24, 2009
    Applicant: BASF SE a German Corporation
    Inventors: Dennis Loesch, Volker Seidl, Matthias Weismantel
  • Process for Continuously Producing Water-Absorbing Polymer Particles
    Publication number: 20090318633
    Abstract: A process for continuously producing water-absorbing polymer particles, comprising polymerization, drying, grinding, classification and at least partial recycling of the undersize obtained in the classification, wherein the polymer gel obtained by the polymerization is withdrawn from the polymerization reactor and mixed with the recycled undersize.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 24, 2009
    Applicant: BASF SE
    Inventors: Rudiger Funk, Matthias Weismantel, Leigh R. Blair, Kevin D. Heitzhaus
  • Production of Superabsorbent Polymers on a Continuous Belt Reactor
    Publication number: 20090312184
    Abstract: The invention relates to the production of superabsorbent polymers on a continuous belt reactor, wherein the continuous belt rests at least partly upon at least one support belt and the at least one continuous support belt is a metallic belt with a basis weight of at least 1 kg/m2.
    Type: Application
    Filed: January 10, 2008
    Publication date: December 17, 2009
    Applicant: BASF SE a German Corporation
    Inventors: Matthias Weismantel, Rüdiger Funk, Leigh R. Blair, Kevin D. Heitzhaus, Bruce Storey
  • Method for Producing Water-Absorbing Composite Materials
    Publication number: 20090312182
    Abstract: Water-absorbing composites comprising at least two particulate water-absorbing polymers having different pH values and at least one fibrous material are produced without premixing the water-absorbing polymers and are used in hygiene articles.
    Type: Application
    Filed: June 29, 2007
    Publication date: December 17, 2009
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Sylvia Bertha