Catalyst composition comprising metallocene compound having bulky cycloalkyl-substituted cyclopentadienyl ligand, and process for olefin polymerization using the same

A catalyst composition for polymerizing olefins comprising:

• an unsymmetrical unbridged metallocene compound represented by chemical formula 1;
• and
• an alumoxane represented by chemical formula 2 or 3, wherein the metallocene compound and the aluminoxane are uniformly deposited on a porous support by using an oscillatory wave having the frequency of 20 to 500 kHz, and the activity of the catalyst composition increases when hydrogen is introduced in the polymerization of olefin.
• [Chemical formula 1]
• (R1CpR2)(Cp′R3)MX2
• wherein, Cp is a cyclopentadienyl radical;
• Cp′ is a radical having a cyclopentadienyl moiety;
• R1 is a radical selected from cyclohydrocarbyl radicals having 3 to 11 carbon atoms;
• R2 and R3 are one or more substituents substituted on Cp and Cp′, respectively, and the substituents can be the same or different, and are hydrogen, phosphine, amino, alkyl, alkoxy, alkyl amino, dialkyl amino, alkoxy-alkyl, aryl, aryloxy-alkyl, alkenyl, alkylaryl, or arylalkyl radical having 1 to 20 carbon atoms;
• M is a transition metal of Group 4B, 5B, or 6B of the Periodic Table;
• and X can be the same or different, and is a radical selected from halogen, alkyl, aryl, alkenyl, alkylaryl, arylalkyl, alkoxy, and aryloxy radical having 1 to 20 carbon atoms.
• 3
• wherein, each R′ is the same or different and is a hydrocarbyl radical having 1 to 10 carbon atoms, x is an integer in the range of 1 to 50, and y is an integer in the range of 3 to 50.