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Phenoxy–Ether Ligated Ti Complexes for the Polymerization of Ethylene
Author(s) -
Suzuki Yasuhiko,
Inoue Yoshihisa,
Tanaka Hidetsugu,
Fujita Terunori
Publication year - 2004
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200300115
Subject(s) - methylaluminoxane , polyethylene , ether , polymer chemistry , polymerization , ethylene , catalysis , imine , coordination polymerization , chemistry , materials science , organic chemistry , polymer , metallocene , solution polymerization
Summary: Bis(phenoxy–ether) Ti complexes were investigated as ethylene polymerization catalysts. The complexes, combined with i Bu 3 Al/Ph 3 CB(C 6 F 5 ) 4 or methylaluminoxane (MAO) cocatalysts, can be highly active single‐site catalysts, which display activities ( turnover frequency, max. 2 065 min −1 ) comparable with that of a highly active bis(phenoxy–imine) Ti complex/MAO system, and provide very high molecular weight polyethylenes ( $\overline M _{\rm v}$ 2 040 000–5 420 000) at 25 °C under atmospheric pressure.Synthesis of polyethylene using bis(phenoxy–ether) Ti complexes, an example of which is shown.