Patent ID: 6919412

Claim:
A process for polymerization or copolymerization of olefins, in which olefins are polymerized in the presence of the following components: (A) a substituted monocyclopentadienyl, monoindenyl, monofluorenyl or heterocyclopentadienyl complex of formula (I) [Y−M−X n ] m, I in which the variables have the following meaning: M is chromium, molybdenum or tungsten, Y is described by formula II in which the variables have the following meaning: E 1 -E 5 are carbon or at maximum one of E 1 to E 5 is phosphorus or nitrogen, Z is NR 5 R 6 , PR 5 R 6 , OR 5 , SR 5 , or an unsubstituted, substituted or condensed, partially unsaturated heterocyclic or hetetoaromatic ring system, B is one of the following groups: and additionally, if Z is an unsubstituted, substituted or condensed, partially unsaturated heterocyclic or heteroaromatic ring system, B can also be in which L 1 , L 2 denotes silicon or carbon, k denotes 1, or if Z is an unsubstituted, substituted or condensed, partially unsaturated heterocyclic or heteroaromatic ring system, is also 0, X independently of one another fluorine, chlorine, bromine, iodine, hydrogen, C 1 -C 10 alkyl, C 2 -C 10 alkenyl, C 6 -C 20 aryl, alkylaryl with from 1 to 10 C atoms in the alkyl radical and from 6 to 20 C atoms in the aryl radical, NR 15 R 16 , OR 15 , SR 15 , SO 3 R 15 , OC(O)R 15 , CN, SCN, β-diketonate, CO, BF 4 —, PF 6 —, or bulky non-coordinating anions, R 1 -R 16 independently of one another hydrogen, C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 6 -C 20 aryl, alkylaryl with from 1 to 10 C atoms in the alkyl radical and from 6 to 20 C atoms in the aryl radical, SiR 17 3 , in which the organic radicals R 1 -R 16 can also be substituted by halogens, and two geminal or vicinal radicals R 1 -R 16 can also be joined to a 5- or 6-membered ring, R 17 independently of one another hydrogen, C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 6 -C 20 aryl, alkylaryl with from 1 to 10 C atoms in the alkyl radical and from 6 to 20 C atoms in the aryl radical, and two geminal radicals R 17 can also be joined to a 5- or 6-membered ring, n is 1, 2 or 3, m is 1, 2 or 3, (B) optionally, one or more activator compounds, and (C) one or more additional catalysts conventionally used for the polymerization of olefins.