Patents by Inventor Stephanie A. Bejune

Stephanie A. Bejune 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 preparing ?-caprolactone
    Patent number: 8247580
    Abstract: The present invention provides a process for preparing ?-caprolactone in a purity of more than 99% by cyclizing 6-hydroxycaproic esters in the liquid phase at from 150 to 400° C. and from 1 to 1020 hPa abs., and removing and condensing the compounds which are volatile under cyclization conditions, which comprises thermally treating the remaining bottom product of the cyclization in at least one further reactor, removing and condensing volatile compounds and obtaining ?-caprolactone by distillation from the condensates.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: August 21, 2012
    Assignee: BASF SE
    Inventors: Rolf Pinkos, Gerd-Dieter Tebben, Thomas Krug, Tilman Sirch, Todd C Spengeman, Stephanie A. Bejune, Jeffrey T. Andress, Todd Gasiorowski
  • PROCESS FOR PREPARING EPSILON-CAPROLACTONE
    Publication number: 20100240913
    Abstract: The present invention provides a process for preparing ?-caprolactone in a purity of more than 99% by cyclizing 6-hydroxycaproic esters in the liquid phase at from 150 to 400° C. and from 1 to 1020 hPa abs., and removing and condensing the compounds which are volatile under cyclization conditions, which comprises thermally treating the remaining bottom product of the cyclization in at least one further reactor, removing and condensing volatile compounds and obtaining ?-caprolactone by distillation from the condensates.
    Type: Application
    Filed: October 28, 2008
    Publication date: September 23, 2010
    Applicant: BASF SE
    Inventors: Rolf Pinkos, Gerd-Dieter Tebben, Thomas Krug, Tilman Sirch, Todd C. Spengeman, Stephanie A. Bejune, Jeffrey T. Andress, Todd Gasiorowski