Synthesis and characterization of titanium complexes bearing sulfoxide groups and their catalytic behaviors in ethylene homo- and copolymerization

Titanium complexes derived from 2,4-di-tert-butyl-6-（（2-（arylsulfinyl）phenylimino）methyl）phenol are designed and synthe- sized. X-ray diffraction studies reveal that the complexes adopt distorted octahedral geometry with O（phenol）, N（imine）, and O（sulfoxide） coordinated with titanium. Combined with...

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Bibliographic Details
Published in:Science China. Chemistry 2014-08, Vol.57 (8), p.1144-1149
Main Authors: Wang, Zheng, Peng, Ai-Qing, Sun, Xiu-Li, Tang, Yong
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Copolymerization
Sulfoxides
Titanium
X射线衍射分析
亚砜基
催化性能
共聚单体
均聚
复合轴承
聚乙烯
钛络合物
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Summary:Titanium complexes derived from 2,4-di-tert-butyl-6-（（2-（arylsulfinyl）phenylimino）methyl）phenol are designed and synthe- sized. X-ray diffraction studies reveal that the complexes adopt distorted octahedral geometry with O（phenol）, N（imine）, and O（sulfoxide） coordinated with titanium. Combined with modified methylaluminoxane（MMAO）, the complexes exhibit moderate to high activity to afford polyethylene even at 120 ℃ under 1 atm ethylene pressure. The complexes also show excellent capability in copolymerization of ethylene with either 1-hexene or norbornene. Results indicate that the introduction of sulfoxide groups could open the space around central metal and favors the insertion of bulky comonomers.
ISSN:1674-7291
1869-1870
DOI:10.1007/s11426-014-5137-4