Catalyst composition including novel transition metal compound

A catalyst composition, comprising:

• a transition metal compound represented by the following Formula 1;
• and
• one or more of a compound represented by the following Formula 2, a compound represented by the following Formula 3 and a compound represented by the following Formula 4:
• —[Al(R10)—O]a— [Formula 2]
• A(R11)3 [Formula 3]
• [L-H]+[WD4]− or [L]+[WD4]− [Formula 4]
• in Formula 1,
• R1 to R9 are each independently selected from the group consisting of hydrogen, a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, a cycloalkyl having 3 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms, an aryloxy having 6 to 20 carbon atoms, a silyl, and a combination thereof, or two or more adjacent functional groups of R1 to R9 are connected to each other to form an aliphatic ring having 6 to 20 carbon atoms or an aromatic ring having 3 to 20 carbon atoms;
• X1 and X2 are each independently selected from the group consisting of a halogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, a cycloalkyl having 3 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, an alkylamino having 1 to 20 carbon atoms, an arylamino having 6 to 20 carbon atoms, and an alkylidene having 1 to 20 carbon atoms;
• where the cycloalkyl and aryl are optionally independently substituted with 1 to 5 substituents selected from the group consisting of a halogen, —CF3, —NO2, —OH, —SH, —CN, an alkoxy having 1 to 6 carbon atoms, an alkyl having 1 to 8 carbon atoms, an alkenyl having 2 to 8 carbon atoms, and an alkynyl having 2 to 8 carbon atoms;
• M is a Group 4 metal;
• Y is a Group 16 element;
• and
• n is an integer of 3 to 20;
• in Formulas 2 to 4,
• R10 and R11 are the same or different and are each independently selected from the group consisting of a halogen, a hydrocarbyl having 1 to 20 carbon atoms, and a hydrocarbyl having 1 to 20 carbon atoms substituted with a halogen;
• A is aluminum or boron;
• D independently represents an aryl having 6 to 20 carbon atoms or an alkyl having 1 to 20 carbon atoms in which at least one hydrogen atom is optionally substituted with a substituent, and the substituent is at least one selected from the group consisting of a halogen, a hydrocarbyl having 1 to 20 carbon atoms, an alkoxy having 1 to 20 carbon atoms and an aryloxy having 6 to 20 carbon atoms;
• H is a hydrogen atom;
• L is a neutral or cationic Lewis acid;
• W is a Group 13 element;
• and
• a is an integer of 2 or more.