Patents by Inventor Robert Laubner

Robert Laubner 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 the depolymerization of mixtures that contain mono-and/or diesters of polytetrahydrofurane
    Patent number: 7902386
    Abstract: The present invention provides a process for depolymerizing mixtures comprising mono- and/or diesters of polytetrahydrofuran in the presence of an acidic catalyst and of a C1- to C3-alcohol at temperatures of from 80 to 200° C. and a pressure of from 0.05 to 0.5 MPa, where the molar ratio of the C1- to C3-alcohol relative to the carboxyl groups present in the mixture is greater than 1.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: March 8, 2011
    Assignee: BASF SE
    Inventors: Tobias Wabnitz, Ricardo Ferre Gimenez, Robert Laubner, Ralf Stolle
  • METHOD FOR THE DEPOLYMERIZATION OF MIXTURES THAT CONTAIN MONO-AND/OR DIESTERS OF POLYTETRAHYDROFURANE
    Publication number: 20100298583
    Abstract: The present invention provides a process for depolymerizing mixtures comprising mono- and/or diesters of polytetrahydrofuran in the presence of an acidic catalyst and of a C1- to C3-alcohol at temperatures of from 80 to 200° C. and a pressure of from 0.05 to 0.5 MPa, where the molar ratio of the C1- to C3-alcohol relative to the carboxyl groups present in the mixture is greater than 1.
    Type: Application
    Filed: August 27, 2008
    Publication date: November 25, 2010
    Applicant: BASF SE
    Inventors: Tobias Wabnitz, Ricardo Ferre Gimenez, Robert Laubner, Ralf Stolle