Volume 24, Issue 9 pp. 641-645
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Alkyl exchange reaction between dialkylzinc compounds and methylaluminoxane and the effect on propylene polymerization

Chuanhui Zhang

Chuanhui Zhang

CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China

Graduate School, Chinese Academy of Sciences, Beijing, People's Republic of China

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Hua-Hua Huang

Hua-Hua Huang

CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China

Graduate School, Chinese Academy of Sciences, Beijing, People's Republic of China

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Hui Niu

Hui Niu

CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China

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Jin-Yong Dong

Corresponding Author

Jin-Yong Dong

CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China

Joint Laboratory of Polymer Science and Materials, Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 People's Republic of China.Search for more papers by this author
First published: 28 April 2010
Citations: 9

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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