| 摘要 |
Catalyst component for the polymerization of alpha-olefins of general formula (I)wherein:M is a transition metal of groups 3, 4-10 of the periodic table of the elements, Each X group can be equal or different and it is hydride, halogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl with 1 to 20 carbon atoms, linear or branched. L is a neutral Lewis baseA is a ring with delocalized pi electrons, that directly coordinates to the transition metal M. Each E group can be equal to or different from each other and it is BR<III>, CR<IV>2, SiR<III>2, GeR<III>2; at least one E is SiR<III>2. R<II >is hydrogen, alkyl, cycloalkyl, aryl, alkenyl, arylalkyl, arylalkenyl or alkylaryl from 1 to 20 carbon atoms, linear or branched, whose hydrogens can be substituted by SiR3, GeR3, OR, NR2, OSiR3 or any combination of thereof. It can moreover form a condensed ring through another bond with E.
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