✦ LIBER ✦
Alkyl exchange reaction between dialkylzinc compounds and methylaluminoxane and the effect on propylene polymerization
✍ Scribed by Chuanhui Zhang; Hua-Hua Huang; Hui Niu; Jin-Yong Dong
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 239 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0268-2605
- DOI
- 10.1002/aoc.1660
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✦ Synopsis
Abstract
Alkyl exchange reaction between dialkylzinc compounds and vacuum‐dried methylaluminoxane (MAO) was investigated. ^1^H NMR shows a clear and direct proof of alkyl exchange reaction between ZnEt~2~ 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.