Processes to prepare ethylene-based polymer compositions

A process to form an ethylene-based polymer composition, the process comprising at least the following:

• Step 1:
• polymerizing a first ethylene-based polymer in the presence of at least one molecular catalyst and a hydrocarbon chain transfer agent, and at a polymerization pressure of at least 14,000 psi;
• Step 2:
• polymerizing a second ethylene-based polymer, and
• wherein the molecular catalyst is a zirconium complex of a polyvalent aryloxyether corresponding to the formula:
• where R20, independently in each occurrence, is a divalent aromatic or inertly substituted aromatic group, each having from 5 to 20 atoms not counting hydrogen;
• T3 is a divalent hydrocarbon or a silane group, each having from 1 to 20 atoms not counting hydrogen, or an inertly substituted derivative thereof;
• and
• RD, independently in each occurrence, is a monovalent ligand group having from 1 to 20 atoms, not counting hydrogen, or two RD groups together are a divalent ligand group having from 1 to 40 atoms, not counting hydrogen;
• and
• wherein at least one alkyl aluminum is added to the process after Step 2.