503860-07-9Relevant academic research and scientific papers
Facile preparation and activation of high-productivity single-site nickel catalysts for highly linear polyethylene
Pickel, Marco,Casper, Thomas,Rahm, Annette,Dambouwy, Christian,Chen, Peter
, p. 4337 - 4352 (2002)
A easy-to-prepare series of nickel complexes are reported, which, upon activation with near-stoichiometric alkylating agents, polymerize ethylene with turnover number (TON) of over 105, which brings the catalyst into the range of commercial single-site catalysts based on early transition metals. However, in contrast to the usual metallocenes, the catalyst shows the same activity in coordinating solvents such as THF and dioxane as it shows in toluene. Moreover, the polymer produced is highly linear, which, together with the long catalyst lifetime, suggests that the combination of the nickel catalyst and a Lewis acid suppresses formation of nickel hydrides.
