METALLOCENE COMPLEXES, THEIR SYNTHESIS AND USE IN CATALYST SYSTEMS FOR OLEFIN POLYMERIZATION

摘要

A metallocene complex is represented by the the formula (C<SUB>p</SUB>R5<SUB>n</SUB>MX<SUB>k</SUB> where C<SUB>p</SUB> (each occurrence) is a cyclopentadienyl group; each of the five R substituents on the or each cyclopentadienyl group is independently selected from hydrogen, C<SUB>1</SUB> to C<SUB>30</SUB> substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and SiR'<SUB>2</SUB>NR"<SUB>2</SUB> where each of the two R' substituents is independently selected from hydrogen, C<SUB>l</SUB> to C<SUB>30</SUB> substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R' substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure, and each of the two R" substituents is independently selected from C<SUB>2</SUB> to C<SUB>30</SUB> substituted or unsubstituted hydrocarbyl, halohydrocarbyl, silylhydrocarbyl or silylhalohydrocarbyl, wherein two adjacent R" substituents may be joined to form part of a saturated, partially unsaturated or aromatic monocyclic or polycyclic ring structure; n is 1 or 2; M is a metal of valence m from Groups 4 to 11 of the Periodic Table of Elements, k is equal to m minus n and the or each X substituent is a univalent anionic ligand, or two X substituents are joined and bound to the metal atom to form a metallocycle ring, or two X substituents are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand., provided that at least one R substituent on the or one cyclopentadienyl group is SiR'<SUP>2</SUP>NR"<SUB>2</SUB>, provided that at least one R substituent on at least one C<SUB>p</SUB> is SiR'<SUB>2</SUB>NR"<SUB>2</SUB> and provided that one or the C<SUB>p</SUB> may be bridged by a bridging group to another C<SUB>p</SUB> group, or a heteroatom containing group, where the bridging group replaces one R group on the C<SUB>p</SUB> group(s) or a hydrogen on a heteratom containing group.