Johannes Obenauf, Winfried P. Kretschmer, Tobias Bauer and Rhett Kempe An Efficient Titanium Amidinate Catalyzed Version of Ziegler's “Aufbaureaktion” European Journal of Inorganic Chemistry 2013
New ammonium titanates undergo polyethylenyl chain transfer polymerization to triethylaluminium after activation with d-MAO (“dry methylaluminoxane”). Polymerization activities of up to 1000 kgPE molcat–1 h–1 bar–1 in the presence of 1000 equiv. of triethylaluminium were observed. Linear aluminium-terminated polyethylene is found. This polymerization process can be viewed as an efficient version of Ziegler's “Aufbaureaktion”.
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