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

✍ Scribed by Seung Woong Yoon; Youngjo Kim; Seong Kyun Kim; Sang Youl Kim; Youngkyu Do; Sungjin Park

• Book ID: 102484170
• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 309 KB
• Volume: 212
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.201000655

✦ Synopsis

Abstract

The synthesis and characterization of a novel titanium complex, {[C~5~(CH~3~)~5~]ClTi}~2~O~2~C~2~(CH~3~)~4~(µ‐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. magnified image