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Citation:
Fang Ming ZHU, Qun Fang WANG, Yu Tang FANG, Shang An LIN. Synthesis of Syndiotactic Polystyrene with Novel Titanocene Catalysts Activated by Modified Methylaluminoxane[J]. Chinese Chemical Letters,
;1999, 10(2): 171-174.
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Novel highly active n5-pentamethylcyclopentadienyltribenzyloxy titanium catalyst activated by modified methylaluminoxane (m-MAO) was prepared for styrene syndiospecific polymerization. The influences of the contents of trimethylaluminum (TMA) in m-MAO and external addition of tri-isobutylaluminum (TIBA) on the distribution of the oxidation states of titanium were investigated in detail. The Ti(III)is in favour of styrene syndiospecific polymerization in higher catalytic activity.
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Keywords:
- Metallocene,
- syndiotactic polystyrene,
- methylaluminoxane
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