Supported metallocene complexes having heterofunctional groups in the cyclopentadienyl system as catalyst systems

Process for the preparation of a supported catalyst system which comprises:

• a) reacting a finely divided carrier with an .alpha.-trisalkoxy-sily-.omega.-haloalkyl compound,
• b) adding a metallocene complex of the formula I ##STR18## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum,
• X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or --OR.sup.5,
• R.sup.5 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, where in each case the alkyl radical is of 1 to 10 carbon atoms and the aryl radical is of 6 to 20 carbon atoms,
• R.sup.1 to R.sup.3 and
• R.sup.6 to R.sup.8 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, 5-membered to 7-membered cycloalkyl which in turn may carry C.sub.1 -C.sub.10 -alkyl radicals as substituents, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two neighboring radicals together may furthermore be a cyclic group of 4 to 15 carbon atoms, or Si(R.sup.10).sub.3,
• R.sup.10 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or C.sub.3 -C.sub.10 -cycloalkyl,
• R.sup.4 is ##STR19## Q.sup.1 is nitrogen, phosphorus, arsenic, antimony or bismuth, R.sup.11 and R.sup.12 are each C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.15 -cycloalkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, where in each case the alkyl radical is of 1 to 10 carbon atoms and the aryl radical is of 6 to 20 carbon atoms, or the two radicals together may be a cyclic group of 2 to 15 carbon atoms which in turn may contain 1 to 8 heteroatoms of main groups III to VI of the Periodic Table of Elements
• R.sup.9 is hydrogen, C.sub.1 -C.sub.10 -alkyl, 5-membered to 7-membered cycloalkyl which in turn may carry C.sub.1 -C.sub.10 -alkyl radicals as substituents, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two neighboring radicals together may furthermore be a cyclic group of 4 to 15 carbon atoms, or Si(R.sup.13).sub.3 or ##STR20## R.sup.13 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or C.sub.3 -C.sub.10 -cycloalkyl,
• Q2 is nitrogen, phosphorus, arsenic, antimony or bismuth,
• R.sup.14 and R.sup.15 are each C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.15 -cycloalkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, where in each case the alkyl radical is of 1 to 10 carbon atoms and the aryl radical is of 6 to 20 carbon atoms, or the two radicals together may be a cyclic group of 2 to 15 carbon atoms which in turn may contain 1 to 8 heteroatoms of main groups III to VI of the Periodic Table of Elements,
• Y is ##STR21## Z is silicon, germanium, tin or carbon and, R.sup.16, R.sup.17, R.sup.18 and R.sup.19 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl or C.sub.6 -C.sub.15 -aryl, where two neighboring radicals together may furthermore be a cyclic group of 4 to 15 carbon atoms,
• c) reacting with a quaternizing agent of the formula V
• A.sub.a X.sup.2 V
• where
• A is C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.15 -cycloalkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, where in each case the alkyl radical is of 1 to 10 carbon atoms and the aryl radical is of 6 to 20 carbon atoms,
• X.sup.2 is fluorine, chlorine, bromine, iodine, SO.sub.3.sup.2-, SO.sub.4.sup.2- or NO.sub.3.sup.- and
• a is 1 or 2,
• and
• d) optionally adding an open-chain or cyclic alumoxane compound of the formula VI or VII ##STR22## where R.sup.20 is C.sub.1 -C.sub.4 -alkyl and is an integer from 5 to 30,
• in the stated sequence.