Patents by Inventor Rudiger Funk

Rudiger 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).

  • Method for grading a particulate water-absorbing resin
    Patent number: 8104621
    Abstract: Process for classifying a particulate water-absorbing resin using a sieving apparatus at a reduced pressure compared with the ambient pressure and a sieving apparatus for classifying a particulate water-absorbing resin at a reduced pressure compared with the ambient pressure.
    Type: Grant
    Filed: December 31, 2005
    Date of Patent: January 31, 2012
    Inventors: Matthias Weismantel, Rüdiger Funk, Thomas Daniel, Uwe Stueven
  • Method for the Production of Water-Absorbing Polymer Particles
    Publication number: 20120001000
    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: Application
    Filed: February 15, 2010
    Publication date: January 5, 2012
    Inventors: Rüdiger Funk, Jürgen Schröder, Emil Bitzer
  • Method for preparing water-absorbing polymer particles by suspension polymerization
    Patent number: 8084556
    Abstract: In a process for producing water-absorbing polymeric particles by suspension polymerization, a monomer solution is metered into a stirred reactor via at least one feed line, the stirred reactor has a volume of at least 1 m3 and the at least one feed line ends in the stirred reactor at a point less than 25 cm above the liquid surface.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: December 27, 2011
    Assignee: BASF SE
    Inventor: Rüdiger Funk
  • Process for continuously producing water-absorbing polymer particles
    Patent number: 8080620
    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recycling of the undersize obtained in the classification, wherein the polymer gel obtained by the polymerization is withdrawn from the polymerization reactor and mixed with the recycled undersize.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: Grant
    Filed: June 17, 2009
    Date of Patent: December 20, 2011
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Leigh R. Blair, Kevin D. Heitzhaus
  • Method using a dry fluidized bed for producing thin, absorbent surface structures
    Patent number: 8063266
    Abstract: A process for producing thin absorbent planar structures which may be used in hygiene products such as diapers, incontinence products, wound contact materials or sanitary napkins to absorb body fluids, comprises the steps of: A) producing a mixture of an adhesive in dispersion form and a particulate absorbent by fluidizing the components, B) applying the mixture of adhesive and absorbent uniformly to the surface of one side of a first planar backing material, C) one side of a second planar backing material is applied to the mixture of adhesive and absorbent that is present on the surface of one side of the first planar backing material, so producing a sandwichlike intermediate, and D) the sandwichlike intermediate is processed to the end product at a temperature of at least 90° C., a pressure of from 4 to 50 bar, and a pressing time of from 0.5 to 5 min.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: November 22, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Heider, Jürgen Hofmann, Mariola Wanior, Rüdiger Funk, Ulrike Licht, Michael Ehle
  • Method For Removing Metallic Impurities
    Publication number: 20110251353
    Abstract: A process for removing metallic impurities from a product mass flow comprising water-absorbing polymer particles, wherein the product mass flow has a temperature of 35 to 90° C.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 13, 2011
    Applicant: BASF SE
    Inventor: Rüdiger Funk
  • Process for Producing Water-Absorbing Polymer Particles
    Publication number: 20110237735
    Abstract: A process for producing water-absorbing polymer particles, wherein heated water-absorbing polymer particles are remoisturized and cooled in a high-speed mixer.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 29, 2011
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Thomas Pfeiffer
  • Process for Producing Water-Absorbing Polymer Particles
    Publication number: 20110204288
    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 roughness of at least 0.9 ?m.
    Type: Application
    Filed: February 21, 2011
    Publication date: August 25, 2011
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Jürgen Schröder, Thomas Pfeiffer, Matthias Weismantel, Stefan Blei
  • Process for Producing Water-Absorbing Particles
    Publication number: 20110207906
    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: Application
    Filed: February 22, 2011
    Publication date: August 25, 2011
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Thomas Pfeiffer, Matthias Weismantel, Stefan Blei
  • Method for grading water-absorbent polymer particles
    Patent number: 7967148
    Abstract: A process for classifying water-absorbing polymer beads, wherein screens having different mesh sizes are used before and after the postcrosslinking to remove the oversize.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: June 28, 2011
    Assignee: BASF SE
    Inventors: Uwe Stueven, Rüdiger Funk, Matthias Weismantel, Karl J. Possemiers, Filip Mees
  • Method for producing water-absorbing polymers
    Patent number: 7960485
    Abstract: The invention relates to processes for preparing water absorbing polymers by polymerization of a monomer solution comprising allyl acrylate and/or allyl alcohol, the solution comprising not more than 0.002% by weight of allyl acrylate and/or allyl alcohol, based on acrylic acid, to aqueous monomer solutions for producing water absorbing polymers, to water absorbing polymers, to processes for producing hygiene articles and also to hygiene articles.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: June 14, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Rüdiger Funk, Uwe Stueven, Friedrich-Georg Martin, Jürgen Schröder
  • Process for preparing color-stable water-absorbing polymer particles with a low degree of neutralization
    Patent number: 7960490
    Abstract: The present invention relates to a process for producing water-absorbing polymeric particles by polymerizing a monomer solution comprising at least one ethylenically unsaturated acid-functional monomer less than 55 mol % neutralized and drying the resulting polymeric gel by means of a heated gas stream in at least two temperature zones.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: June 14, 2011
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Volker Braig
  • Fluid Absorbent Articles
    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
  • Fluid-Absorbent Articles
    Publication number: 20110130275
    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: Application
    Filed: August 3, 2009
    Publication date: June 2, 2011
    Inventors: Matthias Weismantel, Rüdiger Funk, Ulrich Schröder, Marco Krüger, Sylvia Bertha, John Joseph Louden
  • Method for producing mechanically stable water-absorbent polymer particles
    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
  • FLUID-ABSORBENT ARTICLES
    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
  • Method for the Surface Post-Crosslinking of Water Absorbing Polymer Particles
    Publication number: 20110118419
    Abstract: A process for producing water-absorbing polymer particles, wherein the water-absorbing polymer particles are surface postcrosslinked with unsaturated fatty acids or derivatives thereof.
    Type: Application
    Filed: July 10, 2009
    Publication date: May 19, 2011
    Applicant: BASF SE (a German corporation)
    Inventors: Rüdiger Funk, Wilfried Heide, Uwe Stueven
  • Method for Producing Water-Absorbing Polymer Particles
    Publication number: 20110118430
    Abstract: A process for producing water-absorbing polymer particles, comprising polymerization, drying, comminution, classification and recycling of the undersize obtained in the classification, wherein the recycled undersize is coated with a reducing agent and/or inorganic particles.
    Type: Application
    Filed: July 3, 2009
    Publication date: May 19, 2011
    Applicant: BASF SE
    Inventors: Rüdiger Funk, Matthias Weismantel, Sylvia Bertha
  • Acidic superabsorbent hydrogels
    Patent number: 7915363
    Abstract: The present invention relates to novel hydrophilic swellable addition polymers comprising improved odor control, a process for their preparation and their use for absorbing aqueous fluids and a process for screening superabsorbents.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: March 29, 2011
    Inventors: Rüdiger Funk, Norbert Herfert, Mariola Wanior, Uwe Stüven, Martin Beck
  • Method for producing water-absorbing polymer particles
    Patent number: 7910675
    Abstract: A process for producing water-absorbing polymeric particles comprises conducting the polymerization in at least two parallel continuous polymerization reactors under substantially identical conditions and further processing the reaction products conjointly in at least one process step.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: March 22, 2011
    Assignee: BASF SE
    Inventors: Rüdiger Funk, Jürgen Schröder