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Amalgamation of ziegler‐natta and metallocene catalysts
Author(s) -
Soga K.,
Jin J.,
Kaji E.,
Uozumi T.,
Suzuki Y.
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971180108
Subject(s) - methylaluminoxane , natta , metallocene , catalysis , propene , yield (engineering) , polymer chemistry , polymerization , chemistry , materials science , ziegler–natta catalyst , organic chemistry , polymer , metallurgy , ethylene
The MgCl 2 supported half titanocenes and Ti(4, 4, 4‐trifluoro‐1‐phenyl‐1, 3‐butanedionato) 2 Cl 2 catalysts were synthesized and applied to propene polymerization. Without supporting on MgCl 2 , those complexes displayed almost no activity even using methylaluminoxane (MAO) as cocatalyst. When supported on MgCl 2 , on the other hand, the resulting catalysts could be activated by ordinary alkylaluminums to yield polypropene in fairly high yields. The catalyst isospecificity was markedly improved by the addition of a suitable Lewis base.