Ethylene interpolymers catalyzed using mixed homogeneous catalyst formulations

An ethylene interpolymer product comprising a first component with an undetectable level of long-chain branches quantified by a dimensionless Long Chain Branching Factor (LCBF) less than about 0.001 produced using a first homogeneous catalyst formulation and a second component with a detectable level of long-chain branches quantified by a dimensionless Long Chain Branching Factor (LCBF) greater than about 0.001 produced using a second homogeneous catalyst formulation, wherein said first component has a weight-average molecular weight higher than said second component, wherein said ethylene interpolymer product is characterized by:

• (a) an Arrhenius type flow activation energy Ea greater than or equal to 33 KJ/mol and less than or equal to 45 KJ/mol;
• and
• (b) a number-average relaxation time τn measured at 190° C. greater than or equal to 2 ms and less than or equal to 15 ms, wherein said number-average relaxation time is calculated using zero-shear viscosity η0 at 190° C. in kPa·s and plateau modulus GN0 at 190° C. in MPa, according to
• τ
• n
• =
• η
• 0
• G
• N
• 0
• ;
• wherein said ethylene interpolymer product has from about 0.003 part per million (ppm) To about 2.7 ppm of titanium originating from the first homogenous catalyst formulation;
• and from about 0.003 ppm to about 2.7 ppm of hafnium originating from the second homogeneous catalyst formulation wherein said residual catalytic metals are measured using neutron activation analysis.