High pressure low density polyethylene resins with improved optical properties produced through use of highly active chain transfer agents

A process, comprising

• a. Splitting a process fluid, a portion of which comprises ethylene, for delivery into a tubular reactor, into an upstream process feed stream and at least one downstream process feed stream;
• b. Feeding the upstream process feed stream into a first reaction zone and the at least one downstream process feed stream into an at least one other reaction zone to recombine the process fluid, where inside the tubular reactor in at least one of several reaction zones the process fluid has an average velocity of at least 10 meters per second;
• and
• c. Initiating a free-radical polymerization reaction inside the tubular reactor so as to produce an ethylene-based polymer adduct and heat,
• where the tubular reactor comprises several reaction zones including a first reaction zone and at least one other reaction zone, and where the upstream process feed stream further comprises at least one chain transfer agent with a chain transfer constant, Cs, greater than 1.

A process, comprising

• a. Feeding a process fluid via an upstream process feed stream into a first reaction zone of a tubular reactor, where the process fluid has an average velocity in the tubular reactor in at least one of several reaction zones of at least 10 meters per second;
• and
• b. Initiating a free-radical polymerization reaction inside the tubular reactor so as to produce an ethylene-based polymer adduct and heat,
• where the tubular reactor comprises several reaction zones including a first reaction zone and at least one other reaction zone, and where a portion of the process fluid comprises ethylene and another portion comprises at least one chain transfer agent with a chain transfer constant, Cs, greater than 1.