Patent ID: 6265339
Filing Date: 2001-07-24
Classification: C08F,Y10S

Abstract:
A process for preparing supported transition metal catalyst comprising a particulate organic or inorganic support material, a transition metal complex and a compound capable of forming metallocenium ions, which comprises the following process steps:a) contacting a solution of a compound capable of forming metallocenium ions with a second solvent in which this compound is only sparingly soluble, in the presence of the support material,b) removing at least part of the solvent from the support material andc) contacting a solution of a mixture of a compound capable of forming metallocenium ions and a transition metal complex of the general formula III ##STR9##where the substituents have the following meanings: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, alkylaryl having from 1 to 10 carbon atoms in the alkyl radical and from 6 to 20 carbon atoms in the aryl radical, --OR.sup.7 or --NR.sup.7 R.sup.8,whereR.sup.7 and R.sup.8 are C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl each having from 1 to 10 carbon atoms in the alkyl radical and from 6 to 20 carbon atoms in the aryl radical,R.sup.2 to R.sup.6 are hydrogen, C.sub.1 -C.sub.10 -alkyl, 5- to 7-membered cycloalkyl which may in turn bear a C.sub.1 -C.sub.10 -alkyl group as substituent, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two adjacent radicals may also together form a saturated or unsaturated cyclic group having from 4 to 15 carbon atoms, or Si(R.sup.9).sub.3 whereR.sup.9 is C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl, or C.sub.6 -C.sub.15 -aryl, ##STR10##where the radicalsR.sup.10 to R.sup.14 are hydrogen, C.sub.1 -C.sub.10 -alkyl, 5- to 7-membered cycloalkyl which may in turn bear a C.sub.1 -C.sub.10 -alkyl group as substituent, C.sub.6 -C.sub.15 -aryl or arylalkyl and where two adjacent radicals may also together form a saturated or unsaturated cyclic group having from 4 to 15 carbon atoms, or Si(R.sup.15).sub.3 whereR.sup.15 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 aryl or C.sub.3 -C.sub.10 -cycloalkyl, or where the radicals R.sup.5 and R.sup.13 together form a group --R.sup.16 --, where ##STR11##.dbd.BR.sup.17, .dbd.AlR.sup.17, --Ge--, --Sn--, --O--, --S--, .dbd.SO, .dbd.SO.sub.2 .dbd.NR.sup.17, .dbd.CO, .dbd.PR.sup.17 or .dbd.P(O)R.sup.17,whereR.sup.17, R.sup.18, and R.sup.19 are identical or different and are hydrogen, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -fluoroalkyl, C.sub.6 -C.sub.10 -fluoroaryl, C.sub.6 -C.sub.10 -aryl, C.sub.1 -C.sub.10 -alkoxy, C.sub.2 -C.sub.10 -alkenyl, C.sub.7 -C.sub.40 -arylalkyl, C.sub.8 -C.sub.40 -arylalkenyl or C.sub.7 -C.sub.40 -alkylaryl or two adjacent radicals together with the atoms connecting them from a ring, andM.sup.2 is silicon, germanium or tin, with a second solvent in which this mixture is only sparingly soluble, in the presence of the support material obtained as described in a) and b).