The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2006
Filed:
Jul. 10, 2002
Anna Sommazzi, Genoa, IT;
Francesco Masi, Sant'Angelo Lodigiano-Lodi, IT;
Giampietro Borsotti, Novara, IT;
Roberto Santi, Novara, IT;
Fausto Calderazzo, Ghezzano-Pisa, IT;
Guido Pampaloni, Pontedera-Pisa, IT;
Vincenzo Passarelli, Pisa, IT;
Anna Sommazzi, Genoa, IT;
Francesco Masi, Sant'Angelo Lodigiano-Lodi, IT;
Giampietro Borsotti, Novara, IT;
Roberto Santi, Novara, IT;
Fausto Calderazzo, Ghezzano-Pisa, IT;
Guido Pampaloni, Pontedera-Pisa, IT;
Vincenzo Passarelli, Pisa, IT;
Polimeri Europa S.p.A., Brindisi, IT;
Abstract
An organometallic composition which can be used as activating component in a metallocene catalyst for the (co)polymerization of α-olefins, comprises: (A) a fluorinated di-unsaturated cyclic compound, having a relatively acid hydrogen atom, (B) an organometallic compound sufficiently basic to react with the acid hydrogen of the above compound (A), and (C) a polar aprotic organic compound, not containing metallic atoms, having a dielectric constant, in the pure state, equal to or greater than 2, and a weak coordinating capacity. Said composition allows a metallocene catalytic system of the ionic type to be obtained, with a high activity in the (co)polymerization of olefins and a reduced content of metallic residue in the polymeric product thus obtained.