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Ethylene polymerization with ansa-metallocene systems rac-(Me2SiOSiMe2)[Ind]2ZrCl2-MAO and rac-(Me2SiOSiMe2)[IndH4]MtCl2-MAO; (Mt = Zr, Ti)

โœ Scribed by Bo Liang; Yong Li; Guanghua Xie

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
159 KB
Volume
17
Category
Article
ISSN
1022-1336

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## Abstract Reactions of 1 and 2 with MAO and MMAO were monitored by EPR. It was found that MMAO is a stronger reducing agent than MAO. 1 is more prone to reduction than 2. The reduction of Zr^IV^ to Zr^III^ seems to be the essential pathway of some zirconocene catalysts' deactivation. Zr^III^ spec