Patents by Inventor Gian Ravanetti

Gian Ravanetti 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).

  • Chlorinated promoters for vanadium-based polymerization catalysts
    Publication number: 20050274928
    Abstract: Promoters are described for vanadium-based catalysts used in the (co)polymerization of olefins and, in particular, in the production of ethylene/propylene (EPR) or ethylene/propylene/diene (EPDM) elastomeric copolymers. The promoters of the present invention belong to the group of compounds having general formula I: wherein: “X” represents a (—CO—) carbonyl or (—SO2—) sulfonyl group; “n” is 0 or 1; R? is an alkyl or alkylaryl group having from 1 to 20 carbon atoms; R?=R?, H.
    Type: Application
    Filed: May 26, 2005
    Publication date: December 15, 2005
    Applicant: POLIMERI EUROPA S.p.A.
    Inventors: Stefanio Bonsignore, Marco Ricci, Antonio Proto, Roberto Santi, Maria Rivellini, Laura Santi, Stefano Santi, Gian Ravanetti, Andrea Vallieri