Patent ID: 6995216

Claim:
A dual process comprising two or more sequential stages: (1) polymerizing, in the presence of a bridged indenoindolyl ligand-containing group 4 transition metal complex and an activator, ethylene or a mixture of ethylene and a C 3 to C 10 α-olefin in a reactor in the presence of hydrogen at an ethylene/α-olefin weight ratio greater than 95/5 and a hydrogen/ethylene molar ratio within the range of about 0.001/1 to about 10/1 to produce a high density polyethylene (HDPE); and (2) continuing the polymerization, in the presence of the same complex and the same activator as in stage (1), by adding a mixture of ethylene and a C 3 to C 10 α-olefin to the reactor at an ethylene/α-olefin weight ratio less than 95/5 and a hydrogen/ethylene molar ratio less than 1/1 to produce a linear low density polyethylene (LLDPE).