Patent ID: 7989570
Filing Date: 2011-08-02
Classification: C08F,C08G,G02F

Abstract:
1. A method for preparing a cyclic olefin addition polymer, which comprises a step of conducting an addition polymerization by contacting a monomer mixture comprising more than 20 mol % and less than 100 mol % of norbornene-based monomer having a polar functional group represented by the following Chemical Formula 7 with a catalyst system 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, m is an integer of 0 to 4; at least one of the R in the polar functional group, R R p is an integer of 1 to 10, and except polar functional group, R with a proviso that R wherein said a) the Group X transition metal compound is represented by the following 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′ and R″ is hydrogen; C