Activating organometallic composition for the (co)...

Details Activating organometallic composition for the (co)... Activating organometallic composition for the (co)...

2006-07-25

2006-07-25

Lu, Caixia (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S141000, C526S143000, C526S160000, C526S170000, C526S943000, C502S126000, C502S124000, C502S128000, C502S152000

Reexamination Certificate

active

07081505

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.

REFERENCES:
patent: 6274529 (2001-08-01), Fusco et al.
patent: 6596891 (2003-07-01), Sommazzi et al.
patent: 0 924 223 (1999-06-01), None
patent: 1 013 675 (2000-06-01), None

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