Method of polymerization of olefins

A process for the polymerization of olefins in the presence of a catalyst system comprising

• A) a metal complex of group 3, 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table comprising at least one group C=E or a heteroaromatic ring system containing at least one atom from the group consisting of N, P, O and S, where
• E is NR1, PR1, O or S,
• R is C1-C20-alkyl, C2-C20-alkenyl, C6-C20-aryl, alkylaryl having from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, SiR23, where the organic radical R1 may also be substituted by halogens, and
• R2 are each, independently of one another, hydrogen, C1-C20-alkyl, C2-C20-alkenyl, C6-C20-aryl, alkylaryl having from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part and two radicals R3 may also be joined to form a five- or six-membered ring,
• B) optionally an organic or inorganic support,
• C) one or more cation-forming compounds and
• D) optionally one or more metal compounds of group 13 of the Periodic Table,
• wherein the catalyst system is reacted with a compound of the formula F-I
• M1(R3)rA(R4)sA (F-I)
• where
• M1 is Li, Na, K, Be, Mg, Ca, Sr, Ba or Zn,
• R3 is C1-C20-alkyl, C2-C20-alkenyl, C6-C20-aryl, alkylaryl having from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part,
• R4 is hydrogen, halogen, C1-C20-alkyl, C2-C20-alkenyl, C6-C20-aryl, alkylaryl having from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part or alkoxy having from 1 to 10 carbon atoms in the alkyl radical and 6-20 carbon atoms in the aryl radical,
• rA is 1 or 2
• and
• sA is 0 or 1, where the sum rA+sA corresponds to the valence of M1,
• and the metal complex A) is not 1-(8-quinolyl)-2,3,4,5-tetramethylcyclopentadienylchromium(III) dichloride or 1-(8-quinolyl)indenylchromium(III) dichloride.