Patents by Inventor Sabine Beuermann

Sabine Beuermann 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).

  • Process for the preparation of powder coating compositions
    Patent number: 6828363
    Abstract: The invention relates to a method of preparation for polymers, particularly binders for powder coatings and powder coatings which are prepared as a solution in a supercritical fluid phase. Binders for powder coatings are prepared from at least two ethylenically unsaturated monomers capable of free-radical or ionic copolymerization, and conventional initiators and regulators in supercritical fluids, whereby polymerization is carried out in the homogeneous phase, and, after the reaction has ended, either the composition or the phase parameters of the mixture are altered so that at least two phases with supercritical fluid are obtained, and the phase containing predominantly polymer is separated and the polymer is separated as a powder from the sc fluid by depressurization or the polymer phase is further processed under supercritical phase conditions to the powder coating.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: December 7, 2004
    Assignee: E.I. du Pont de Nemours and COmpany
    Inventors: Sabine Beuermann, Michael Buback, Michael Juergens, Eckhard Weidner, Marcus Petermann, Christian Schwede, Peter Klostermann
  • Process for the preparation of powder coating compositions
    Publication number: 20020052456
    Abstract: The invention relates to a method of preparation for polymers, particularly binders for powder coatings and powder coatings which are prepared as a solution in a supercritical fluid phase. Binders for powder coatings are prepared from at least two ethylenically unsaturated monomers capable of free-radical or ionic copolymerization, and conventional initiators and regulators in supercritical fluids, whereby polymerization is carried out in the homogeneous phase, and, after the reaction has ended, either the composition or the phase parameters of the mixture are altered so that at least two phases with supercritical fluid are obtained, and the phase containing predominantly polymer is separated and the polymer is separated as a powder from the sc fluid by depressurization or the polymer phase is further processed under supercritical phase conditions to the powder coating.
    Type: Application
    Filed: August 23, 2001
    Publication date: May 2, 2002
    Inventors: Sabine Beuermann, Michael Buback, Michael Juergens, Eckhard Weidner, Marcus Petermann, Christian Schwede, Peter Klostermann