Patents by Inventor Andrea Vöcker

Andrea Vöcker 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 PRODUCING POLYESTERS AND CO-POLYESTERS FROM LACTONES
    Publication number: 20120202966
    Abstract: The invention relates to a method for producing polyesters and co-polyesters from lactones
    Type: Application
    Filed: August 12, 2010
    Publication date: August 9, 2012
    Applicant: Evonik Degussa GmbH
    Inventors: Emmanouil Spyrou, Friedrich Georg Schmidt, Susanne Kreischer, Andrea Voecker, Elke Gollan, Helmut Ritter, Jiawen Zhou
  • CATALYSIS OF EPOXY RESIN FORMULATIONS HAVING SPARINGLY SOLUBLE CATALYSTS
    Publication number: 20120115988
    Abstract: The present invention relates to epoxy resin formulations having a specific sparingly soluble catalyst mixture for enhancing reactivity.
    Type: Application
    Filed: April 29, 2010
    Publication date: May 10, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Emmanouil Spyrou, Rainer Lomölder, Susanne Kreischer, Andrea Vöcker
  • LOW-CATALYST CARBODIIMIDE GROUPS AND/OR ISOCYANATE MIXTURES COMPRISING URETONIMINE GROUPS
    Publication number: 20120065424
    Abstract: A low-catalyst-content isocyanate mixture containing at least one of a carbodiimide group and a uretonimine groups, obtained by: reacting at least one monomeric diisocyanate (A) in the presence of phosphorus-containing catalyst (B), to obtain a reaction mixture comprising carbodiimide, where the reaction does not take place to complete conversion of the diisocyanate (A) and 1-80% by weight of the diisocyanate (A) employed remains in the reaction mixture as excess diisocyanate; and subsequently simultaneously removing, by distillation, a fraction of the excess of diisocyanate and the catalyst (B), to obtain the isocyanate mixture and a distillate, where the isocyanate mixture has a monomeric diisocyanate (A) content of 0.5%-20% by weight, based on the monomeric diisocyanate (A) employed, and a catalyst (B) content of 0% to 20% by weight, based on the catalyst (B) employed. In addition, a process for preparing a low-catalyst-content isocyanate mixture.
    Type: Application
    Filed: April 21, 2010
    Publication date: March 15, 2012
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Emmanouil Spyrou, Evelyn Albrecht, Annegret Lilienthal, Iris Brueckner, Andrea Voecker