Method for feeding an antistatic compound to a polymerization reactor

A method for feeding an antistatic compound to a polymerization reactor comprising:

• a) dispersing, under mixing conditions, a catalyst powder and an antistatic compound comprising an ester in an oil, wherein the oil has a dynamic viscosity at 20° C. in a range of 10-250 centiPoise, to produce a suspension of the catalyst powder and of the antistatic compound in the oil;
• b) successively adding, under mixing conditions, a molten thickening agent to the suspension of step a) wherein the feed temperature of the molten thickening agent in step b) ranges from 75-110° C. for obtaining a catalytic paste;
• and
• c) transferring the catalytic paste of step b) or its separate components to a polymerization reactor;
• wherein the catalytic paste, before entering the polymerization reactor, is optionally separated into its components by a flow of liquid alkane;
• the thickening agent has a melting point in a range of 30-70° C.;
• and
• the components of step a), the components of step b), oil and thickening agent cannot react,
• wherein the oil comprises a mixture of hydrocarbons having a molecular weight distribution comprised between 100 and 1000, with an average molecular weight Mw ranging from 200 to 500 as measured at 150° C. and a flow rate of 1.0 mL/min as measured by gel permeation chromatography, and
• wherein the weight ratio antistatic/catalyst is between 0.01 and 5.0.