SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES

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SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES

Note | Updated：2021-06-21

- SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES
- Issue 3, Pages: 325-329(2007)
- Affiliations：
  
  1.   State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry
  2.   Chinese Academy of Sciences
  3.   Changchun 130022
  4.   China
- Author bio：
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China and SINOPEC （No. 20334030）();by the National Basic Research Program of China （No. 2005CB623801）.()
- DOI：
  CLC： TQ316.3
- Published：2007
- Accepted：
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[1]李悦生.SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES[J].Chinese Journal of Polymer Science,2007(03):325-329.

SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES[J]. 2007, (3): 325-329.
[1]李悦生.SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES[J].Chinese Journal of Polymer Science,2007(03):325-329. DOI：

SYNDIOSPECIFIC POLYMERIZATION OF STYRENE WITH MULTI-NUCLEAR TITANIUM COMPLEXES[J]. 2007, (3): 325-329. DOI：

摘要

<正>Two multi-nuclear titanium complexes [Ti（η5-Cp*）Cl（μ-O）]3 （1） and [（η5-Cp*TiCl）（μ-O）2（η5-Cp*Ti）2（μ-O）（μ-O）2]2Ti （Cp*=C5Me5）（2） have been investigated as the precatalysts for syndiospecific polymerization of styrene. In the presence of modified methylaluminoxane （MMAO） as a cocatalyst

complexes 1 and 2 display much higher catalytic activities towards styrene polymerization

and produce the higher molecular weight polystyrenes with higher syndiotacticities and melting temperatures （Tm） than the mother complex Cp*TiCl3 does when the polymerization temperature is above 70℃and the Al/Ti molar ratio is in the low range especially.

Abstract

Two multi-nuclear titanium complexes [Ti（η5-Cp*）Cl（μ-O）]3 （1） and [（η5-Cp*TiCl）（μ-O）2（η5-Cp*Ti）2（μ-O）（μ-O）2]2Ti （Cp*=C5Me5）（2） have been investigated as the precatalysts for syndiospecific polymerization of styrene. In the presence of modified methylaluminoxane （MMAO） as a cocatalyst

complexes 1 and 2 display much higher catalytic activities towards styrene polymerization

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