Patents by Inventor Linda S. Lagace

Linda S. Lagace 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 recovery of cobalt oxo catalysts
    Patent number: 4404119
    Abstract: According to one embodiment of the improved process of this invention, dicobalt octacarbonyl is produced in an olefinic medium by contacting an aqueous solution of a tetracarbonylcobaltate metal salt with an oxygen-containing gas in the presence of an olefinic extractant for dicobalt octacarbonyl to oxidize the tetracarbonylcobaltate anion to dicobalt octacarbonyl which is efficiently extracted into the olefinic phase, thereby producing an organic phase which can then be recovered and passed to a cobalt-catalyzed olefin hydroformylation reaction zone as source of at least a portion of the catalyst and olefin required in the olefin hydroformylation reaction to form the corresponding aldehydes.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: September 13, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Linda S. Lagace, David A. Young
  • Oxidative recovery of cobalt oxo catalysts
    Patent number: 4400299
    Abstract: According to one embodiment of the improved process of this invention, dicobalt octacarbonyl is produced in an olefinic medium by contacting an aqueous solution of a tetracarbonylcobaltate metal salt with an oxygen-containing gas in the presence of an olefinic extractant for dicobalt octacarbonyl to oxidize the tetracarbonylcobaltate anion to dicobalt octacarbonyl which is efficiently extracted into the olefinic phase, thereby producing an organic phase which can then be recovered and passed to a cobalt-catalyzed olefin hydroformylation reaction zone as source of at least a portion of the catalyst and olefin required in the olefin hydroformylation reaction to form the corresponding aldehydes.
    Type: Grant
    Filed: December 23, 1981
    Date of Patent: August 23, 1983
    Assignee: Exxon Research & Engineering Co.
    Inventors: Linda S. Lagace, Richard C. Miller, David A. Young