Catalyst system for polymerization of ethylene

Abstract

Catalyst system for the production of polyethylene comprising: I) the reaction product obtained by reacting, preferably in a reactor vessel a) a hydrocarbon solution comprising: i) a magnesium-containing compound selected from an organic oxygen-containing magnesium compound and/or a halogen-containing magnesium compound; and ii) an organic oxygen-containing titanium compound wherein the molar ratio of magnesium:titanium is lower than 3:1; and b) an organo aluminium halide having the formula AlRnX3-n in which R is a hydrocarbon moiety containing 1-10 carbon atoms, X is a halogen and 0<n<3; wherein the molar ratio of supplied organo aluminium halide I)b) to supplied titanium in I)a) in the preparation of I) is in the range of 1 to 12; and wherein the average particle size distribution (PSD) of the catalyst particles is in the range of 0.8 to 1.6 and wherein PSD is defined as PSD=D90−D10)/D50.

Dependencies are inferred from the claim text.