Patents by Inventor Franco Pirinoli

Franco Pirinoli 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 preparing catalyst carrier of magnesium chloride
    Patent number: 4401641
    Abstract: A new crystalline form (beta form) of MgCl.sub.2 is disclosed, as are methods for obtaining it by reaction of SOCl.sub.2 with hydrated MgCl.sub.2 at a temperature comprised between room temperature and the boiling point of SOCl.sub.2.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: August 30, 1983
    Assignee: Montedison S.p.A.
    Inventors: Enrico Albizzati, Ivano Bassi, Giorgio Foschini, Sandro Parodi, Franco Pirinoli
  • Process for polymerizing olefins
    Patent number: 4174429
    Abstract: New catalysts for the polymerization and copolymerization of olefins are disclosed. The catalysts are prepared from (1) a new class of metal compounds containing at least one atom of Mg, Mn or Ca and at least one atom of Ti, V or Zr and (2) organometallic compounds of metals belonging to one of Groups I to III of the Mendelyeev Periodic Table.
    Type: Grant
    Filed: August 23, 1978
    Date of Patent: November 13, 1979
    Assignee: Montedison S.p.A.
    Inventors: Umberto Giannini, Enrico Albizzati, Sandro Parodi, Franco Pirinoli
  • Catalysts for the polymerization of olefins
    Patent number: 4174299
    Abstract: New catalysts for the polymerization and copolymerization of olefins are described. The catalysts are prepared from new components which are complexes of the metals Mg, Mn and/or Ca with the transition metals Ti, V and/or Zr, plus an electron-donor compound.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: November 13, 1979
    Assignee: Montedison S.p.A.
    Inventors: Umberto Giannini, Enrico Albizzati, Sandro Parodi, Franco Pirinoli
  • Catalysts for polymerizing olefins
    Patent number: 4124532
    Abstract: New catalysts for the polymerization and copolymerization of olefins are disclosed. The catalysts are prepared from (1) a new class of metal complexes of general formula M.sub.m M'X.sub.2m Y.nE, in which M is Mg, Mn and/or Ca; m is a number from 0.5 to 2.0; M' is Ti, V and/or Zr; X is Cl, Br or I; Y is one or more atoms or groups of atoms of various kinds in an amount such as to satisfy the valence of M'; n is a number from 0.5m to 20m; and E is an electron-donor compound; and (2) organometallic compounds of metals belonging to one of Groups I to III of the Mendelyeev Periodic Table.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: November 7, 1978
    Assignee: Montedison S.p.A.
    Inventors: Umberto Giannini, Enrico Albizzati, Sandro Parodi, Franco Pirinoli
  • Three-component metathesis catalysts
    Patent number: 3956178
    Abstract: New three-component metathesis catalysts prepaed from a tungsten compound, an organic ligand and an organometallic compound of a metal belonging to Group I to IV of the Mendelyeev Periodic System are disclosed. More particularly, the disclosed catalysts are prepared from a tungsten oxychloride, an organic ligand containing a nitrile or ester group, and an organic aluminum compound.
    Type: Grant
    Filed: February 13, 1974
    Date of Patent: May 11, 1976
    Assignee: Montedison S.p.A.
    Inventors: Alberto Greco, Franco Pirinoli, Gino Dall'Asta