Patents by Inventor Alessandro Pennati

Alessandro Pennati 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 of the ziegler-natta type for the (co)polymerization of olefins with a high productivity
    Patent number: 9334341
    Abstract: Solid catalyst with a high thermal stability for the (co)polymerization of ?-olefins, comprising titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, wherein at least 60% of the titanium is in oxidation state +3, and, when examined by means of XPS spectroscopy, has an absorption band characteristic of a binding energy ranging from 455 to 458 eV. Said catalyst, used in combination with a suitable co-catalyst in (co)polymerization processes of ?-olefins at a high temperature, shows an improved productivity, a high incorporation of co-monomers in the copolymerization of ethylene and an increased thermal stability with respect to the systems so far in use.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 10, 2016
    Assignee: Versalis S.p.A.
    Inventors: Francesco Masi, Mario Polesello, Roberto Fusco, Anna Sommazzi, Antonio Alfonso Proto, Laura Meda, Tiziano Pennati, Elena Maria Frigerio, Alessandro Pennati, Giuseppe Conti, Francesco Menconi
  • CATALYSTS OF THE ZIEGLER-NATTA TYPE FOR THE (CO)POLYMERIZATION OF OLEFINS WITH A HIGH PRODUCTIVITY
    Publication number: 20120322959
    Abstract: Solid catalyst with a high thermal stability for the (co)polymerization of ?-olefins, comprising titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, wherein at least 60% of the titanium is in oxidation state +3, and, when examined by means of XPS spectroscopy, has an absorption band characteristic of a binding energy ranging from 455 to 458 eV. Said catalyst, used in combination with a suitable co-catalyst in (co)polymerization processes of ?-olefins at a high temperature, shows an improved productivity, a high incorporation of co-monomers in the copolymerization of ethylene and an increased thermal stability with respect to the systems so far in use.
    Type: Application
    Filed: November 18, 2010
    Publication date: December 20, 2012
    Applicant: versalis S.p.A.
    Inventors: Francesco Masi, Mario Polesello, Roberto Fusco, Anna Sommazzi, Antonio Alfonso Proto, Laura Meda, Tiziano Pennati, Elena Maria Frigerio, Alessandro Pennati, Giuseppe Conti, Francesco Menconi