Patents by Inventor Maggy Kermarec

Maggy Kermarec 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).

  • Catalysts for the selective dimerization of ethylene or propylene to monoolefines, of the type based on nickel on a silica support, process for preparing it and dimerization process employing it
    Patent number: 4749675
    Abstract: The present invention relates to a catalyst for the selective dimerization of ethylene or of propylene into monoolefines of the type based on nickel on a silica support whose active sites are complexes of the Ni.sup.+ ion. This catalyst is characterized in that practically the whole of the nickel is present in the form of Ni.sup.+ complexes co-ordinated with the oxygen of the surface of the silica support and whose co-ordination sphere comprises one or two trialkylphosphine ligands. The invention also relates to a process for the preparation of these catalysts and to a process of dimerization employing them.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: June 7, 1988
    Assignee: Centre National de la Recherche Scientifique (CNRS)
    Inventors: Daniele Olivier, Feng X. Cai, Christine Lepetit, Maggy Kermarec