Abstract
Experimental data on ethylene homo- and copolymerization with higher a-olefins (hex-1-ene, oct-1-ene, and dec-1-ene) by the catalytic system TiCl2{η2-1-[C(H)=N(2,3,5,6-tetrafluorophenyl)]-2-O-3,5-di-But-C6H2}2/MAO in a Nefras medium and in toluene are presented. The catalytic system provides ultrahigh-molecular-weight polyethylene and incorporation of comonomer units at a level of 2–3 mol.% in both solvents. Nascent copolymers formed in Nefras (petroleum solvent), unlike those obtained in toluene, are characterized by two melting peaks in the DSC thermograms and only one when obtained in toluene. The molecular weight of polyolefins is efficiently controlled by the introduction of hydrogen into the system.
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Dedicated to Academician of the Russian Academy of Sciences M. P. Egorov on the occasion of his 60th anniversary.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2500–2508, Novemer, 2013.
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Bravaya, N.M., Saratovskikh, S.L., Mukhina, E.V. et al. Influence of polymerization conditions on catalytic properties of the TiCl2{η2-1-[C(H)=N(2,3,5,6-tetrafluorophenyl)]-2-O-3,5-di-But-C6H2}2/MAO system in ethylene homopolymerization and copolymerization with α-olefins. Russ Chem Bull 62, 2500–2508 (2013). https://doi.org/10.1007/s11172-013-0363-z
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DOI: https://doi.org/10.1007/s11172-013-0363-z