引用本文:
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.
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.
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.
Synthesis of Syndiotactic Polystyrene with Novel Titanocene Catalysts Activated by Modified Methylaluminoxane
摘要:
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.
English
Synthesis of Syndiotactic Polystyrene with Novel Titanocene Catalysts Activated by Modified Methylaluminoxane
Abstract:
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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Key words:
- Metallocene
- / syndiotactic polystyrene
- / methylaluminoxane
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