Patent ID: 7629423

Claim:
A method of preparing an alkene-acrylate-norbornene terpolymer comprising a step of polymerization of a monomer mixture consisting of alkene, acrylate and norbornene by a radical polymerization initiator in the presence of a metal oxide, wherein the metal oxide is a compound as represented in Formula 12, M x N y O z Formula 12 where M is at least one selected from the group consisting of alkali earth metals, transition metals, and group 13 and group 14 metals; N is group 5 or group 6 atom; O is oxygen atom; x, y and z are, respectively a value determined by state of oxidation of M and N, x>0, y≧0 and z>0, and the amount of the radical initiator to the acrylate monomer is 0.01 to 1 mol %.