Patent ID: 6552210
Filing Date: 2003-04-22
Classification: C07F,C08F

Abstract:
A compound of the formula (I) whereM1 is a transition metal of group 4 of the Periodic Table of the Elements, R1 and R2 are identical or different and are each a hydrogen atom, a halogen atom or a C1-C20 group, R3 are identical or different and are each a hydrogen atom, a halogen atom or a C1-C40 group, and two radicals R3 may form a monocyclic or polycyclic ring system which may in turn be substituted, where at least one of the radicals R3 comprises a cationic group (â€”DEL)+Yâˆ’whereD is an atom of group 15 or 16 of the Periodic Table of the Elements, E are identical or different and are each a hydrogen atom or a C1-C20 group, and two radicals E may form a monocyclic or polycyclic ring system which may in turn be substituted, L is 3 when D is an atom of group 15 of the Periodic Table of the Elements and is 2 when D is an atom of group 16 of the Periodic Table of the Elements, Y is halogen C1-C10-alkylsulfonate, C1-C10-haloalkylsulfonate, C6-C20-alkylsulfonate, C6-C20-haloarylsulfonate, C1-C20-alkylarylsulfonate, C1-C20-haloalkylcarboxylate, C1-C10-alkyl sulfate, tetrafluoroborate, hexafluorophosphate, hexafluoroantimonate or hexafluoroarsenate, m is an integer less than or equal to 4 and greater than or equal to 1, mâ€² is an integer smaller than or equal to 4 and greater than or equal to 1, k is zero or 1, where the metallocene is unbridged when k=0 and is bridged when k=1, A is a bridge of the formula â€ƒor &boxH;BR4, AIR4, â€”Sâ€”, â€”SOâ€”, â€”SO2â€”, &boxH;NR4, &boxH;PR4, &boxH;P(O)R4, o-phenylene, 2,2â€²-biphenylene, where M2 is Carbon, silicon, germanium, tin, nitrogen or phosphorus, o is 1, 2, 3 or 4, R4 and R5 are identical or different and are each a hydrogen atom, halogen or a C1-C20 group, and R4 and R5 may form a monocyclic or polycyclic ring system.