Multimodal ethylene-based copolymer compositions and processes of producing

A process of polymerizing a multi-modal polyethylene polymer, the process comprising:

• contacting ethylene and optionally one or more α-olefin monomers with at least two catalyst systems in a solution reactor at a reactor temperature of greater than 150° C.;
• wherein:
• the at least two catalyst systems produce a vinyl end group count per 1000 carbon atoms is greater than 0.3, wherein the vinyl end group count per 1000 carbon atoms is measured by 600 MHz nuclear magnetic resonance (NMR) instrument;
• a first catalyst system of the at least two catalyst systems comprises a first procatalyst;
• and
• a second catalyst system of the at least two catalyst systems comprises a second procatalyst having a reactivity ratio of less than 20, wherein the reactivity ratio of the first procatalyst is measured in a single reactor with only the first catalyst system in the presence of 1250 grams of ISOPAR-E, with a mol fraction of ethylene in solution of 0.709, and at a reactor temperature of at least 150° C.