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Polymerization of butadiene catalyzed by a cobalt-containing catalyst in aliphatic media

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Abstract

The polymerization of butadiene catalyzed by the preformed Co(2-ethylhexanoate)2-Et3Al2Cl3-isoprene (a molar ratio of 1: 20: 20) catalytic system in toluene, cyclohexane, and hexane has been studied. In toluene, the catalyst demonstrates high activity and stereospecificity and yields a high-molecular-mass polymer. In cyclohexane and hexane, the catalyst has a high activity but affords polymers with lower contents of 1,4-cis-units and reduced intrinsic viscosities. The addition of EtAlCl2 and/or a decrease in the polymerization temperature make it possible to obtain polybutadiene containing more than 96% 1,4-cis-units and an acceptable intrinsic viscosity (2.0–2.8 dl/g) in the nonaromatic solvents as well.

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Authors and Affiliations

  1. Topchiev institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia

    O. K. Sharaev, N. N. Kostitsyna, N. N. Glebova, G. N. Bondarenko & V. A. Yakovlev

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  1. O. K. Sharaev
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  2. N. N. Kostitsyna
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  3. N. N. Glebova
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  4. G. N. Bondarenko
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  5. V. A. Yakovlev
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Additional information

Original Russian Text © O.K. Sharaev, N.N. Kostitsyna, N.N. Glebova, G.N. Bondarenko, V.A. Yakovlev, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. B, 2006, Vol. 48, No. 10, pp. 1906–1909.

This work was supported by the Division of Chemistry and Material Sciences, Russian Academy of Sciences, within the framework of the program of Basic Research no. 1 “Theoretical and Experimental Study of the Nature of Chemical Bond and Mechanisms of the Most Important Chemical Reactions and Processes” (project no. 2).

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Sharaev, O.K., Kostitsyna, N.N., Glebova, N.N. et al. Polymerization of butadiene catalyzed by a cobalt-containing catalyst in aliphatic media. Polym. Sci. Ser. B 48, 274–276 (2006). https://doi.org/10.1134/S1560090406090120

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  • DOI: https://doi.org/10.1134/S1560090406090120

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