Process for preparing a catalyst for olefin polymerization

A process for preparing a supported metallocene catalyst for olefin polymerization, which comprises (1a) adding a cocatalyst compound to a transition metal compound;

• or (1b) adding a cocatalyst compound to a carrier;
• (2) forming a supported catalyst by supporting the transition metal compound obtained in step (1a) on a carrier, or by supporting a transition metal compound to the carrier obtained in step (1b);
• and (3) primarily treating the supported catalyst with a solution or suspension of an antistatic agent;
• and then washing the supported catalyst with a solvent and drying it, and (4) secondarily treating the supported catalyst with dry powder of an antistatic agent,
• wherein the transition metal compound is represented by Formula 1:
• in Formula 1, M is a transition metal of Group 4 of the Periodic Table of the Elements;
• Q is any one of carbon, silicon, germanium, and tin,
• X is each independently a halogen atom, an alkyl group having 1-10 carbon atoms, or an alkenyl group having 2-10 carbon atoms,
• R1 to R12 may each independently be one of a hydrogen atom, an alkyl group having 1-20 carbon atoms, a cycloalkyl group having 3-6 carbon atoms, and an aryl group having 6-14 carbon atoms, or when two adjacent Rn and Rn+1 (where n is 1 to 11) among R1 to R12 form a mono- or multi-cyclic compound having 1-15 carbon atoms unsubstituted or substituted with an alkyl group having 1-4 carbon atoms, other Rs than Rn and Rn+1 may each independently be one of hydrogen, an alkyl group having 1-20 carbon atoms, a cycloalkyl group having 3-6 carbon atoms, and an aryl group having 6-14 carbon atoms, and
• R13 and R14 are each independently an alkyl group having 1-10 carbon atoms or an aryl group having 6-14 carbon atoms,
• wherein the antistatic agent comprises at least one selected from the group consisting of aluminum stearate, sodium stearate, calcium stearate, zinc stearate, aluminum tristearate, aluminum acetate, and zinc acetate,
• wherein the amount of the antistatic agent used in step (3) is 0.01 to 5.0% by weight based on the total weight of the supported catalyst, and the amount of the antistatic agent used in step (4) is 0.1 to 3.5% by weight based on the total weight of the supported catalyst, and
• wherein the amount of the transition metal compound supported on the carrier is 0.5 to 3.0% by weight based on the total weight of the supported catalyst, and the amount of the cocatalyst compound supported on the carrier is 20 to 30% by weight based on the total weight of the supported catalyst.