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Syndiospecific polymerization of styrene using methylaluminoxane‐activated bis(phenolato)titanium complexes
Author(s) -
Okuda Jun,
Masoud Emad
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980401)199:4<543::aid-macp543>3.0.co;2-9
Subject(s) - methylaluminoxane , styrene , polymer chemistry , polymerization , chemistry , titanium , polystyrene , tacticity , catalysis , metallocene , copolymer , organic chemistry , polymer
Styrene was polymerized using a series of methylaluminoxane‐activated bis(phenolato)titanium complexes of the type {(OC 6 H 2 ‐4‐Me‐6‐ t Bu) 2 Z}Tix 2 (X = Cl, O i Pr, η 5 ‐C 5 Me 5 ) to give syndiotactic polystyrene. Catalyst activity was found to depend on the nature of the bridging group Z, where Z = CH 2 , CH 2 CH 2 , S, SO. Activity was found to be highest for Z = S.