Patents by Inventor Roger G. Dureanleau

Roger G. Dureanleau 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 separation of product resulting from hydroformylation
    Patent number: 4678857
    Abstract: A process is disclosed for preparing products such as 4-hydroxybutanal which comprises contacting unsaturated compounds such as allyl alcohol with carbon monoxide and hydrogen in the presence of a rhodium carbonyl-phosphine catalyst and an aromatic solvent. The solvent is an aromatic which causes a large density difference between the resulting aqueous phase and organic phase so that the soluble rhodium catalyst can be easily separated from the 4-hydroxybutanal product and starting material without appreciable loss of the metal. This allows for easy recycle of the catalyst solution.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: July 7, 1987
    Assignee: Texaco Inc.
    Inventors: Roger G. Dureanleau, John F. Knifton