Novel Dinuclear Half-Titanocene-Producing Styrene/Ethylene Copolymers Containing Syndiotactic Styrene/Styrene Sequences

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The synthesis and characterization of a novel titanium complex, {[C(5)(CH(3))(5)]ClTi}(2)O(2)C(2)(CH(3))(4)(mu-O) (2), which has two titanium metal centers linked by heteroleptic bridges, oxo and pinacolato, is described. The compound shows good stability under air. The 2/modified methylalumoxane (MMAO) catalytic system produces ethylene/styrene interpolymers (ESIs) containing syndiotactic styrene/styrene sequences (syndiotactic polystyrene blocks) with a high styrene content. To the best of our knowledge, this is the first example of a group-4-based catalytic system producing an ESI with syndiotactic polystyrene blocks.
Publisher
WILEY-BLACKWELL
Issue Date
2011-04
Language
English
Article Type
Article
Keywords

SYNDIOSPECIFIC STYRENE POLYMERIZATION; ETHYLENE/STYRENE COPOLYMERIZATION; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURE; CATALYST; COMPLEXES; POLYSTYRENE; HYDROLYSIS; MECHANISM; SYSTEMS

Citation

MACROMOLECULAR CHEMISTRY AND PHYSICS, v.212, no.8, pp.785 - 789

ISSN
1022-1352
URI
http://hdl.handle.net/10203/98045
Appears in Collection
CH-Journal Papers(저널논문)
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