| abstract |
A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based polymer, and (B) contacting under second polymerization conditions the first ethylene-based polymer of (A) with at least additional ethylene and a carbon-carbon free radical initiator of Structure (I): wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R 1 , R 2 , R 3 , R 4 , R 5 and R 6 ) form a ring structure, with the proviso that at least one of R 2 and R 5 , and at least one of R 3 and R 6 is a hydrocarbyl group of at least two carbon atoms, to form the composition. |