2-substituted disindenylmetallocenes, process for their preparation, and their use as catalysts in the polymerization of olefins
AssigneeHoechst Aktiengesellschaft
InventorsAndreas Winter, Martin Antberg, Walter Spaleck, Jurgen Rohrmann, Volker Dolle
Life of this patent
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Abstract
The novel metallocenes of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.3 and R.sup.4 are hydrogen, R.sup.5 and R.sup.6 are alkyl or haloalkyl, --(CR.sup.8 R.sup.9).sub.m --R.sup.7 --(CR.sup.8 R.sup.9).sub.n -- is a single- or multi-membered chain in which R.sup.7 may also be a (substituted) hetero atom, and m+n is zero or 1, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high molecular weight.
Claims19
A compound of the formula I ##STR10## in which M.sup.1 is a metal from group IVb, Vb or VIb of the Periodic Table,
- R.sup.1 and R.sup.2 are identical or different and are a hydrogen atom, a C.sub.1 -C.sub.10 -alkyl group, a C.sub.1 -C.sub.10 -alkoxy group, a C.sub.6 -Ch.sub.10 -aryl group, a C.sub.6 -C.sub.10 -aryloxy group, a C.sub.2 -C.sub.10 -alkenyl group, a C.sub.7 -C .sub.40 -arylalkyl group, a C.sub.7 -C.sub.40 -alkylaryl group, a C.sub.8 -C.sub.40 -arylalkenyl group or a halogen atom,
- R.sup.3 and R.sup.4 are identical or different and are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -alkyl group, which is optionally halogenated, a C.sub.6 -C.sub.10 -aryl group, an --NR.sub.2.sup.10, --SR.sup.10, --OSiR.sub.3.sup.10. --SiR.sub.3.sup.10 or --PR.sub.2.sup.10 radical in which R.sup.10 is a halogen atom, a C.sub.1 -C.sub.10 -alkyl group or a C.sub.6 -C.sub.10 -aryl group,
- R.sup.5 and R.sup.6 are identical or different and are as defined for R.sup.3 and R.sup.4, with the proviso that R.sup.5 and R.sup.6 are not hydrogen, ##STR11## .dbd.Br.sup.11, .dbd.AlR.sup.11, --Ge--, --Sn--, --O--, --S--, .dbd.SO, .dbd.SO.sub.2, .dbd.NR.sup.11, .dbd.CO, .dbd.PR.sup.11 or .dbd.P(O)R.sup.11,
- where
- R.sup.11, R.sup.12 and R.sup.13 are identical or different and are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -alkyl group, a C.sub.1 -C.sub.10 -fluoroalkyl group, a C.sub.6 -C.sub.10 -aryl group, a C.sub.6 -C.sub.10 -fluoroaryl group, a C.sub.1 -C.sub.10 -alkoxy group, a C.sub.2 -C.sub.10 -alkenyl group, a C.sub.7 -C.sub.40 -arylalkyl group, a C.sub.8 -C.sub.40 -arylalkenyl group or a C.sub.7 -C.sub.40 -alkylaryl group, or R.sup.11 and R.sup.12 or R.sup.11 and R.sup.13, in each case with the atoms connecting them, form a ring,
- M.sup.2 is silicon, germanium or tin,
- R.sup.8 and R.sup.9 are identical or different and are as defined for R.sup.11, and
- m and n are identical or different and are zero, 1 or 2, m plus n being zero, 1 or 2.
a compound as claimed in calim 1, wherein R.sup.1 and R.sup.2 are identical or different and are a hydrogen atom, a C.sub.1 -C.sub.3 -alkyl group, a C.sub.1 -C.sub.3 -alkoxy group, a C.sub.6 -C.sub.8 -aryl group, a C.sub.6 -C.sub.8 -aryloxy group, a C.sub.2 -C.sub.4 -alkenyl group, a C.sub.7 -C.sub.10 -arylalkyl group, a C.sub.7 -C.sub.12 -alkylaryl group, a C.sub.8 -C.sub.12 -arylalkenyl group or chlorine.
Dependencies are inferred from the claim text.