Patents by Inventor Bruno Engelhard

Bruno Engelhard 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: 3970713
    Abstract: Allyl alcohol is produced in simple and economical fashion from propylene and oxygen by reacting propylene, oxygen and acetic acid over a palladium-containing catalyst in the presence of water; condensing the reaction product to form a condensate containing allyl acetate, acetic acid and water; treating the condensate with an acid catalyst and separating the resulting product by distillation into a head product consisting essentially of an allyl acetate/allyl alcohol/water azeotrope and into a sump product consisting essentially of acetic acid, allyl alcohol and water; recycling the head product to the acid catalyst stage; separating the sump product in a second distillation into an allyl alcohol/water head product and into a second sump product consisting essentially of acetic acid and water and recycling this sump product to the initial reaction.
    Type: Grant
    Filed: March 8, 1974
    Date of Patent: July 20, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Scharfe, Wulf Schwerdtel, Wolfgang Swodenk, Bruno Engelhard, Johann Grolig, Manfred Martin, Karl-Hermann Reissinger