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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/1802
- Active-center equilibrium in Ziegler-Natta butadiene polymerization
- Cass, Peter J.; Fairhall, Kim; Laslett, Robert L.; Pratt, Kerry C.; Rizzardo, Ezio
- The Ziegler-Natta-catalyzed polymerization of 1,3-butadiene was investigated at a low aluminum alkyl/cobalt (Al/Co) ratio using two different soluble catalyst systems: cobalt(II) octanoate/diethylaluminum chloride/water and cobalt(II) octanoate/methylaluminoxane/tert-butyl chloride. When the active-center concentration was determined by the number-average molecular weight technique, it was found that the percentage of active cobalt depended on the Al/Co ratio. Subsequently, an equilibrium reaction was proposed to be Co + 2Al CoAl2, where Co is cobalt(II) octanoate, Al is either of the aluminum alkyl-activator species, and CoAl2 is the active catalyst.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. School of Engineering and Science
- Journal of Polymer Science Part A: Polymer Chemistry, Vol. 39, no. 13 (2001), pp. 2256-2261
- Publication year
- Cobalt octanoate; Diethylaluminum chloride; Methylaluminoxane; Tert-butyl chloride; Butadiene polymerization; cis-1,4-polybutadiene
- John Wiley & Sons
- Publisher URL
- Copyright © 2001 John Wiley & Sons, Inc. Publisher does not officially support author/institution self-archiving of either the postprint (final, revised accepted draft) or published version of full text.
- Peer reviewed