Catalyst system for the polymerization of olefins

Details Catalyst system for the polymerization of olefins Catalyst system for the polymerization of olefins

2005-01-11

2005-01-11

Rabago, Roberto (Department: 1713)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

C526S141000, C526S147000, C526S163000, C526S161000, C526S172000, C526S160000, C526S127000, C526S133000, C526S134000, C502S123000, C502S155000, C502S167000, C502S103000, C502S152000

Reexamination Certificate

active

06841501

ABSTRACT:
A catalyst system for the polymerization of olefins comprising the product obtained by contacting:(A) at least one transition metal organometallic compound, pyrrolidyl bis(η-cyclopentadienyl)methylzirconium being excluded, and(B) an organometallic compound obtained by contacting:a) a Lewis base having formula (I): wherein Ra, Rb, Rcand Rd, equal to or different from each other, are selected from the group consisting of hydrogen, halogen, linear or branched, saturated or unsaturated, C1-C10alkyl, C6-C20aryl, C7-C20arylalkyl and C7-C20alkylaryl groups; withb) a Lewis acid of formula (II)in-line-formulae description="In-line Formulae" end="lead"?MtR13  (II)in-line-formulae description="In-line Formulae" end="tail"? wherein Mt is a metal belonging to Group 13 of the Periodic Table of th Elements; R1, equal to or different from each other, are selected from the group consisting of halogen, halogenated C6-C20aryl and halogenated C7-C20alkylaryl groups; and(C) optionally an alkylating agent.

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