Patents Examined by E. D. Irzinsk
  • Spherical components and catalysts for the polymerization of olefins
    Patent number: 5508245
    Abstract: Spherical components of catalysts for the polymerization of olefins comprising:(a) a vanadium compound selected from the compounds of formula VOX.sub.2 Y or VX.sub.n Y.sub.n-4n, where X is Cl or Br and Y is Cl, Br OR or NR.sup.I.sub.2(b) MgCl.sub.2 in spherical form.Said components have an average diameter greater than 1 .mu.m, a surface area of at least 10 m.sup.2 /g, a porosity of at least 0.1 g/cm.sup.3 and an X-ray spectrum having particular characteristics.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: April 16, 1996
    Assignees: Montell Technology Company bv, Montell North America Inc.
    Inventors: Giampiero Morini, Enrico Albizzati, Umberto Giannini, Matteo Nicolini