Patent ID: 11945889
Assignee: UNIVATION TECHNOLOGIES, LLC
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 4:
5. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer of claim 1, the method consisting essentially of copolymerizing ethylene and 1-hexene with a combination of a bimodal catalyst system and a trim catalyst in the presence of molecular hydrogen gas (H2) and, optionally, an induced condensing agent (ICA) in one polymerization reactor under effective polymerizing conditions to give an initial bimodal ethylene-co-1-hexene copolymer, and optionally oxygen tailoring the initial bimodal ethylene-co-1-hexene copolymer to give an oxygen-tailored bimodal ethylene-co-1-hexene copolymer; wherein the bimodal catalyst system is made by contacting a first activator with bis(2-(pentamethylphenylamido)ethyl)-amine zirconium dibenzyl and a bis(butylcyclopentadienyl)zirconium dihalide; wherein the trim catalyst is made by contacting a second activator with bis(butylcyclopentadienyl)zirconium dialkyl; wherein the first and second activators are the same or different; and wherein the effective polymerizing conditions comprise a reaction temperature from 80 degrees (°) to 1100 Celsius (C.); a molar ratio of the molecular hydrogen gas to the ethylene (H2/C2 molar ratio) from 0.001 to 0.020; and a molar ratio of the 1-hexene (“C6”) to the ethylene (C6/C2 molar ratio) from 0.005 to 0.050.