Patent ID: 7157532

Claim:
A process for preparing olefin homopolymers or copolymers which comprises polymerizing by polymerization of at least one olefin in a hydrocarbon or a mixture of hydrocarbons in the presence of a molar mass regulator, a mixed catalyst and a substance which increases the electrical conductivity of the hydrocarbon or the mixture of hydrocarbons and is soluble in the hydrocarbon or the mixture of hydrocarbons or which reacts with components of the mixed catalyst, wherein the mixed catalyst is obtainable by reaction of a magnesium alkoxide with titanium(IV) halide, and comprises titanium in the oxidation states four and three and also an organoaluminum compound, where the molar ratio of Ti(IV) to Ti(III) is from 100:1 to 1:100 and wherein up to a ratio component of 0.15, soluble organoaluminum compounds which increase the electrical conductivity of the solution are formed.