Patents Assigned to Encichem Elastomeri S.r.l.
  • Catalytic system and process for the production of poydiolefins
    Patent number: 5627119
    Abstract: A catalytic system to polymerize diolefinic monomers consists of a lanthanide salt, an organometallic compound of a metal belonging to groups I, II and III of the periodic table of elements and an organometallic compound of boron. The polymers obtained are characterized in that they have a high degree of 1,4 chain units and ratio between 1.4-cis/1,4-trans units which can vary as desired, and also a narrow molecular weight distribution.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: May 6, 1997
    Assignees: Encichem Elastomeri S.r.l., Eniricerche S.p.A.
    Inventors: Paolo Biagini, Gabriele Lugli, Fabio Garbassi, Piero Andreussi