Patent ID: 7723450

Claim:
An organometallic transition metal compound according to formula (II) where M is an element of group 4 of the Periodic Table of the Elements, the radicals X are identical or different and are each an organic or inorganic radical, with two radicals X also being able to be joined to one another, is a divalent group R 1 is an organic radical having from 1 to 40 carbon atoms, R 2 is hydrogen, is a molecule fragment: R 7 is an organic radical having from 1 to 40 carbon atoms, R 8 is hydrogen or an organic radical having from 1 to 40 carbon atoms or R 7 and R 8 together with the atoms connecting them form a monocyclic or polycyclic ring system which may in turn be substituted, R 15 , R 16 , R 17 and R 18 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms or two adjacent radicals R 15 , R 16 , R 17 or R 18 together with the atoms connecting them form a monocyclic or polycyclic ring system which may in turn be substituted, R 19 , R 20 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms or R 19 and R 20 together with the atoms connecting them form a monocyclic or polycyclic ring system which may in turn be substituted, R 21 , R 22 , R 23 and R 24 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms or two adjacent radicals R 21 , R 22 , R 23 or R 24 together with the atoms connecting them form a monocyclic or polycyclic ring system which may in turn be substituted, A′ is where R 28 , R 29 , R 30 and R 31 are identical or different and are each hydrogen or an organic radical having from 1 to 40 carbon atoms or two radicals R 28 , R 29 and R 30 together with the atoms connecting them form a monocyclic or polycyclic ring system which may in turn be substituted, p is from 2 to 8.