Alkyl exchange reaction between dialkylzinc compounds and methylaluminoxane and the effect on propylene polymerization |
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| Authors: | Chuanhui Zhang Hua‐Hua Huang Hui Niu Jin‐Yong Dong |
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| Affiliation: | 1. CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China;2. Graduate School, Chinese Academy of Sciences, Beijing, People's Republic of China |
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| Abstract: | Alkyl exchange reaction between dialkylzinc compounds and vacuum‐dried methylaluminoxane (MAO) was investigated. 1H NMR shows a clear and direct proof of alkyl exchange reaction between ZnEt2 and trimethylaluminum associated with MAO. Detailed analysis of polymers produced in the presence of dialkylzinc compounds gave other indirect but equally strong evidence of alkyl exchange. Therefore, care must be taken to investigate dialkylzinc‐based chain transfer reaction in combination with a precatalyst and MAO. Copyright © 2010 John Wiley & Sons, Ltd. |
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| Keywords: | chain transfer dialkylzinc compounds metallocene catalysts olefin polymerization polyolefins |
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