Ethene-1,3-butadiene copolymerizations in the presence of CpTiCl3–MAO: Relevance of the cocatalyst
2008
Abstract Ethene-1,3-butadiene copolymerizations in the presence of CpTiCl 3 /MAO catalytic system were performed. The microstructure of the obtained copolymers and the activity were reported as a function of the Al/Ti ratio. At high Al/Ti ratio prevailingly 1,4 -cis butadiene homosequences were obtained, whereas, at low Al/Ti ratio, over 50% of alternating ethene-1,4 -trans -butadiene was produced. The activity shows a minimum value at Al/Ti = 128.
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