[EN] ACTIVATING ORGANOMETALLIC COMPOSITION FOR THE (CO)POLYMERIZATION OF ALPHA-OLEFINS COMPRISING FLUORINATED CYCLOPENTADIENYL COMPOUNDS<br/>[FR] ACTIVATION D'UNE COMPOSITION ORGANOMETALLIQUE POUR LA (CO)POLYMERISATION D'ALPHA-OLEFINES CONTENANT DES COMPOSES CYCLOPENTADIENYLES FLUORES
                        
                            
                                申请人:POLIMERI EUROPA SPA
                            
                            
                                公开号:WO2003010210A1
                            
                            
                                公开(公告)日:2003-02-06
                            
                            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.