Patent ID: 7038070

Claim:
A metallocene compound of the formula VI where R 1 is a linear, branched or cyclic C 1 -C 8 -alkyl group which may bear one or more identical or different fluorine or chlorine substituents, a phenyl group which may bear one or more identical or different fluorine or chlorine substituents, a C 1 -C 12 -alkylaryl or arylalkyl group, where the alkyl part may bear one or more identical or different fluorine or chlorine subsituents and the aryl part may bear one or more identical or different fluorine or chlorine subsituents, a C 2 -C 8 -alkenyl group or a C 2 -C 8 -alkynyl group, a C 8 -C 12 -arylalkyl group which may bear one or more identical or different fluorine or chlorine subsituents, or R 1 is an OR 2 , SiR 2 3 or —OSiR 2 3 group, where R 2 are identical or different and are each a C 1 -C 4 -alkyl group or phenyl group or R 1 is a C 1 -C 16 -heterocyclic group, where the heteroatoms are oxygen, nitrogen, sulfur or silicon and the group may in turn bear C 1 -C 10 -radicals or heteroatoms as substituents, M is titanium, zirconium or hafnium, R 9 and R 10 are identical or different and are hydrogen, hydroxy, C 1 -C 10 -alkyl, C 1 -C 10 -alkoxy, C 1 -C 10 -alkyl, C 1 -C 10 -aryloxy, C 2 -C 10 -alkenyl, C 7 -C 40 -arylalkyl, C 7 -C 40 -alkyaryl or C 8 -C 40 -arylalkenyl, x is zero or 1, R 3 is 4-(C 4 -C 8 -alkyl) phenyl, where the (C 4 -C 8 -alkyl) group is a branched C 4 -C 8 -alkyl group, Y 4 and Y 6 are hydrogen Y 5 is hydrogen or R 3 , R 11 is a bridging group of the formula where M 2 is carbon, silicon, germanium or tin, p is 1, 2 or 3, R 12 and R 13 are identical or different and are hydrogen, halogen C 1 -C 20 -alkyl, C 6 -C 14 -aryl, C 1 -C 10 -alkoxy, C 2 -C 10 -alkenyl, C 7 -C 20 -arylalky, C 7 -C 20 -alkyaryl, C 6 -C 10 -aryloxy, C 1 -C 10 -fluoralkyl, C 6 -C 10 -haloaryl or C 2 -C 10 -alkynyl or R 12 and R 13 together with the atom connecting them from a ring, wherein the radicals having the same designation on the two indenyl ligands can be identical or different from one another.