Catalyst system for preparing cyclic olefin addition polymer, cyclic olefin addition polymer prepared by using the catalyst systsem and method for preparing the same

A catalyst system for preparing a cyclic olefin addition polymer, comprising:

• a) a Group X transition metal compound;
• b) a compound comprising a neutral Group XV electron donor ligand having a cone angle of at least 160°;
• and
• c) a salt capable of offering an anion that can be weakly coordinated to the transition metal of the a) the Group X transition metal compound, wherein said a) the Group X transition metal compound is represented by the following Chemical Formula 1:
• M(R)2 [Chemical Formula 1]
• wherein M is a Group X metal;
• and
• R is an anionic ligand of acetylacetonate (R″C(O)CHC(O)R″), or acetate group offering σ- and π-bonds, wherein each of R″ is hydrogen;
• C1 to C20 linear or branched alkyl;
• C2 to C20 linear or branched alkenyl, or vinyl;
• C5 to C12 cycloalkyl substituted with hydrocarbon or unsubstituted;
• C6 to C40 aryl substituted with hydrocarbon or unsubstituted;
• C6 to C40 aryl having hetero atom;
• C7 to C15 aralkyl substituted with hydrocarbon or unsubstituted;
• or C3 to C20 alkynyl.