Patent ID: 8426529

Claim:
An ethylene-dicyclopentadiene copolymer composition comprising copolymers derived from ethylene and dicyclopentadiene (DCPD) co-monomers, wherein said copolymer composition: a) has a DCPD-derived comonomer unit content of from about 25 mole % to about 45 mole %; b) has an Mw/Mn of from 1.96 to 2.34, and a Number Average Molecular Weight, Mn, of 251,610 g/mol or more; c) comprises amorphous material and has a glass transition temperature, T g , which is from about 85° C. to about 129° C.; and which has a relationship to the mole % DCPD defined by the equation T g (in ° C.)≧[(mole % DCPD×3.142)−4.67]; and d) comprises no significant amount of crystalline polyethylene homopolymer or crystallizable polyethylene segments within said ethylene-dicyclopentadiene copolymers.