Patent ID: 7511106

Claim:
A process comprising: (i) contacting a bridged bis-indenyl transition metal metallocene catalyst compound and a non-coordinating anion (NCA) activator with an alpha-olefin, ethylene, and at least one diene comprising vinyl norbornene (VNB); wherein the NCA activator is dimethyl aniliniumtetrakis(heptafluoronaphthyl)borate; wherein the bridged bis-indenyl transitional metal metallocene catalyst compound comprises a cyclopentadienyl (Cp) fused to a phenyl ring; wherein the indenyl complex has the general formula: (Cp 1 R 1 m )R 3 (Cp 2 R 2 p )MX q wherein Cp 1 of ligand (Cp 1 R 1 m ) and Cp 2 of ligand Cp 2 R 2 p ) are the same, R 1 and R 2 each is, independently, a halogen or a hydrocarbyl, halocarbyl, hydrocarbyl-substituted organometalloid or halocarbyl-substituted organometalloid group containing up to about 20 carbon atoms, m is 1 to 5, p is 1 to 5; and two R 1 and two R 2 substituents on adjacent carbon atoms of the Cp ring associated therewith are joined together to form a ring containing six carbon atoms, R 3 is a bridging group, such that the number of carbon atoms in the direct chain between the two ligands is 2, M is a transition metal having a valence of from 3 to 6, from group 4, 5, or 6 of the periodic table of the elements and is in its highest oxidation state, each X is a non-Cp ligand and is, independently, a hydrocarbyl, oxyhydrocarbyl, halocarbyl, hydrocarbyl-substituted organometalloid, oxyhydrocarbyl-substituted organometalloid or halocarbyl-substituted organometalloid group containing up to about 20 carbon atoms, and q is equal to the valence of M minus 2; and (ii) recovering a polymer comprising units derived from alpha-olefin, ethylene, and diene wherein the polymer is free from gel.