Patents by Inventor Andreas Stüttgen

Andreas Stüttgen 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).

  • Defoamer composition based on organofunctionally modified polybutadienes
    Publication number: 20220389131
    Abstract: A defoamer composition contains a compound based on polybutadiene having at least one repeat unit selected from the divalent radicals:
    Type: Application
    Filed: May 25, 2022
    Publication date: December 8, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Philippe Favresse, Alexander Schulz, Michael Fiedel, Sarah Otto, Frank Schubert, Thorsten Schierle, Heike Semmler, Andreas Stüttgen
  • Phosphoric esters as emulsifiers and dispersants
    Patent number: 6689731
    Abstract: The invention relates to the use of particular phosphoric esters as emulsifiers and dispersants for pigments and fillers, based on polystyrene-block (b)-polyalkylene oxide copolymers. The invention provides block copolymeric phosphoric esters and their salts of the general formula (I) [R1O(SO)a(EO)b(CH2CHCH3O)c(BO)d]xPO—(OH)3−x  (I) where R1=a straight-chain or branched or cycloaliphatic radical having 1 to 22 carbon atoms, SO=styrene oxide, EO=ethylene oxide, BO=butylene oxide and a=1 to<2, b=3 to 100, c=0 to 10, d=0 to 3, x=1 or 2 where b≧a+c+d.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: February 10, 2004
    Assignee: Goldschmidt AG
    Inventors: Eberhard Esselborn, Wernfried Heilen, Kathrin Lehmann, Ellen Reuter, Stefan Silber, Andreas Stüttgen
  • Maleic anhydride copolymers containing amine oxide groups and their use as dispersants for pigments of fillers
    Patent number: 6423785
    Abstract: The invention relates to maleic anhydride copolymers containing amine oxide groups and to their use as dispersants for pigments and fillers.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: July 23, 2002
    Assignee: Goldschmidt AG
    Inventors: Eberhard Esselborn, Manfred Gaikowski, Wolfgang Josten, Ellen Reuter, Stefan Silber, Andreas Stüttgen