Patent ID: 7312285
Filing Date: 2007-12-25
Classification: C08F,C08G,G02F

Abstract:
1. A method, comprising: contacting a norbornene-based monomer having an ester or acetyl group with a catalyst system comprising: i) a Group X transition metal compound represented by M(R) ii) a compound comprising a neutral Group XV electron donor ligand having a cone angle of at least 160°; and iii) a salt capable of offering an anion that can be weakly coordinated to the i) transition metal, in solvent to conduct an addition polymerization; and forming a norbornene-based addition polymer having a polar group of ester or acetyl having a number average molecular weight (Mn) of 10,000 to 1,000,000, which is a norbornene-based homopolymer comprising an ester or acetyl group or a copolymer of norbornene-based monomers comprising different ester or acetyl groups.