Patents by Inventor Andreas Bosse-Plois

Andreas Bosse-Plois 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).

  • Patent number: 5688973
    Abstract: Process for the production of 2-vinyl-1,3-dioxolane reacting acrolein with ethylene glycol in the presence of a solid, acidic catalyst and recovery of the reaction mixture. Selectivity may be increased in comparison with known prior art processes by performing the reaction in the presence of a solid acidic catalyst at a temperature of below 50.degree. C.; the reaction mixture, from which the catalyst has been removed, is treated by extraction using an organic solvent which substantially does not dissolve ethylene glycol and has a boiling point of above 130.degree. C.; the two phases obtained on extraction are treated for recovery by distillation and recovered educts and the organic solvent are recycled.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: November 18, 1997
    Assignee: Degussa Aktiengesellschaft
    Inventors: Mathias Hoepp, Dietrich Arntz, Wolfgang Boeck, Andreas Bosse-Plois, Klaus Raible