Summary
The homo- and copolymerization of styrene (S) with p-methylstyrene (p-MeS) and p-tert-butylstyrene (p-ButS) has been tested using initiator systems of the Ph2Zn-metallocene-MAO type. The metallocenes used were CpTiCl3, IndTiCI3, (n-BuCp)2TiCl2, Ind2ZrCl2 and Et(Ind)2ZrCl2. The Ph2Zn-metallocene-MAO systems homopolymerize styrene, p-methylstyrene and p-tert-butylstyrene, producing syndiotactic polymers in the case of the titanocenes and amorphous polymers in the case of the zirconocenes. The S/p-MeS and S/p-ButS copolymers obtained with the Ph2Zn-titanocene-MAO systems are enriched in the comonomer with respect to the initial feed.
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Pérez, M.A., Caro, C.J., Cancino, R.A. et al. Ph2Zn-metallocene-MAO initiator systems in the homo- and copolymerization of styrene/p-alkylstyrene. Polymer Bulletin 51, 199–208 (2003). https://doi.org/10.1007/s00289-003-0214-4
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DOI: https://doi.org/10.1007/s00289-003-0214-4