Patents by Inventor Astrid RUPPEL

Astrid RUPPEL 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 acrylic acid from formaldehyde and acetic acid
    Patent number: 9546123
    Abstract: The present invention relates to a process for preparing acrylic acid from formaldehyde and acetic acid, comprising reacting formaldehyde and acetic acid via an aldol condensation in a reaction unit comprising n reaction zones arranged in series, each comprising an aldol condensation catalyst, where n is at least 2, and wherein at least one stream leaving a reaction zone, before being fed into the reaction zone immediately downstream, is mixed with a stream comprising formaldehyde and optionally comprising acetic acid. The present invention further relates to an apparatus for preparing acrylic acid from formaldehyde and acetic acid and to the use of this apparatus.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: January 17, 2017
    Assignee: BASF SE
    Inventors: Till Christian Brueggemann, Nicolai Tonio Woerz, Astrid Ruppel
  • PROCESS FOR PREPARING ACRYLIC ACID FROM FORMALDEHYDE AND ACETIC ACID
    Publication number: 20160176797
    Abstract: The present invention relates to a process for preparing acrylic acid from formaldehyde and acetic acid, comprising reacting formaldehyde and acetic acid via an aldol condensation in a reaction unit comprising n reaction zones arranged in series, each comprising an aldol condensation catalyst, where n is at least 2, and wherein at least one stream leaving a reaction zone, before being fed into the reaction zone immediately downstream, is mixed with a stream comprising formaldehyde and optionally comprising acetic acid. The present invention further relates to an apparatus for preparing acrylic acid from formaldehyde and acetic acid and to the use of this apparatus.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Applicant: BASF SE
    Inventors: Till Christian BRUEGGEMANN, Nicolai Tonio WOERZ, Astrid RUPPEL