Patent ID: 7091290

Claim:
A method for preparing homo- and co-polymers by polymerizing cyclic olefin compounds with a catalyst in a non-polar solvent, the catalyst including a complex prepared by mixing a nickel salt compound, an organoaluminoxane compound, and at least one organic boron compound selected from compounds represented by the following formulas 1 to 4: BR 1 R 2 R 3 Formula 1 Wherein, R 1 , R 2 , and R 3 are different or the same and independently a C 1 –C 10 alkyl group, B(OR 4 )(OR 5 )(OR 6 ) Formula 2 Wherein, R 4 , R 5 and R 6 are different or the same and independently a C 1 –C 10 alkyl group, BR 7 R 9 Formula 3 Wherein, R 7 , R 8 , and R 9 are different or the same and independently a C 1 –C 10 alkyl group, and Wherein, R 10 is a hydrogen atom, a C 1 –C 10 alkyl group, or a C 1 –C 10 alkoxy group.