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Ethylene Polymerization with Cycloalkylidene‐Bridged Cyclopentadienyl Metallocene Catalysts
Author(s) -
Xu Shansheng,
Deng Xiaobin,
Wang Baiquan,
Zhou Xiuzhong,
Yang Ling,
Li Yufei,
Hu Youliang,
Zou Fenglou,
Li Yang
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010601)22:9<708::aid-marc708>3.0.co;2-o
Subject(s) - cyclopentadienyl complex , metallocene , ethylene , catalysis , polymerization , post metallocene catalyst , polymer chemistry , chemistry , materials science , organic chemistry , polymer
Ethylene was polymerized with cycloalkylidene‐bridged cyclopentadienyl metallocene catalysts 1 – 9 in the presence of methyl aluminoxane (MAO) as the cocatalyst. Unlike the normal titanocene catalysts, the cycloalkylidene‐bridged cyclopentadienyl titanocene catalysts show much higher activities than the corresponding zirconocene and hafnocene catalysts and show the highest activities at higher temperature. This indicates that the cycloalkylidene‐bridged cyclopentadienyl titanocene system is very thermally stable and maybe a very promising catalyst system for industrial application.