Copolymerization of ethylene with isoprene promoted by titanium complexes containing a tetradentate [OSSO]‐type bis(phenolato) ligand |
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| Authors: | Carmine Capacchione Daniela Saviello Antonietta Avagliano Antonio Proto |
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| Affiliation: | Dipartimento di Chimica, and NANOMATES, Research Centre for NANOMAterials and nanoTEchnology at Università di Salerno, via Ponte don Melillo, I‐84084 Fisciano (Salerno), Italy |
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| Abstract: | Copolymerization of ethylene with isoprene (IP) catalyzed by 1,4‐dithabutanediyl‐linked bis(phenolato) titanium complexes 1 and 2 and methylaluminoxane (MAO) produced exclusively ethylene‐IP copolymers with good activity. The copolymer microstructure can be varied by changing the ratio between the monomers in the copolymerization feed, affording copolymers with IP content ～60%. The copolymer microstructure was fully elucidated by 13C‐NMR spectroscopy of the copolymers with various IP content revealing a strong tendency to the alternating microstructure. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 4200–4206, 2010 |
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| Keywords: | copolymerization stereospecific polymers Ziegler‐Natta polymerization |
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