Patents Assigned to BASF SE a German corporation
  • 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
  • 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
  • Method for Producing Water-Absorbent Polymer Particles
    Publication number: 20100272998
    Abstract: A process for producing water-absorbing polymer particles, wherein a product stream comprising water-absorbing polymer particles is tested for nonferritic metallic impurities by means of an eddy current detector.
    Type: Application
    Filed: December 9, 2008
    Publication date: October 28, 2010
    Applicant: BASF SE a German corporation
    Inventors: Matthias Weismantel, Rüdiger Funk, Dominicus van Esbroeck
  • 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
  • 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
  • Method for Producing White and Color-Stable Water-Absorbing Polymer Particles Having High Absorbency and High Saline Flow Conductivity
    Publication number: 20100041550
    Abstract: Water-absorbing polymeric particles are produced by polymerizing a monomer solution or suspension comprising at least one unsaturated carboxylic acid and at least one hydroquinone monoether, and coating the polymeric particles with at least one salt of a tervalent metal cation of a carboxylic acid and/or at least one basic salt of a tervalent metal cation.
    Type: Application
    Filed: January 29, 2008
    Publication date: February 18, 2010
    Applicant: BASF SE a German corporation
    Inventors: Ulrich Riegel, Thomas Daniel, Uwe Stueven, Mark Elliott, Volker Braig, Michael de Marco
  • 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-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
  • Method for Producing Polymer Particles by the Polymerization of Fluid Drops in a Gas Phase
    Publication number: 20090315204
    Abstract: A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores into a reaction chamber comprising the gas phase, wherein ratio of length of the feed to greatest diameter of the feed in the region of the multitude of bores is at least 10.
    Type: Application
    Filed: January 10, 2008
    Publication date: December 24, 2009
    Applicant: BASF SE A German Corporation
    Inventors: Dennis Lösch, Carolin Nadine Dücker, Asif Karim, Andreas Daiss, Marco Krüger, Volker Spindler, Stefan Blei, Dieter Ehnes, Oliver Gampfer, Dieter Reimer, Michael Heeger
  • 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
  • Neutralization Process
    Publication number: 20090221746
    Abstract: The invention relates to a neutralization process in which at least one ethylenically unsaturated carboxylic acid is preneutralized at least partly with a base, wherein the preneutralized solution is divided into at least two part-solutions and at least one part-solution is aftertreated so as to form part-solutions with different degree of neutralization and/or solids content, and also to an apparatus for carrying out the process.
    Type: Application
    Filed: August 31, 2006
    Publication date: September 3, 2009
    Applicant: BASF SE a German corporation
    Inventors: Michael de Marco, Matthias Weismantel, Karl J. Possemiers, Filip Mees, Ronny De Kaey
  • Method for the Pneumatic Conveying of Water-Absorbent Polymer Particles
    Publication number: 20090022603
    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: Application
    Filed: March 6, 2007
    Publication date: January 22, 2009
    Applicant: BASF SE a German corporation
    Inventors: Hermann Josef Feise, Hanno Rudiger Wolf, Rudiger Funk