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Polymerization of styrene by diphenylzinc-additive systems

4. Ph2Zn-metallocene-MAO systems

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Summary

Styrene was polymerized using combined systems of diphenylzinc, Ph2Zn, and metallocene compounds activated by methylaluminoxane, MAO. From the various metallocenes employed bis (indenyl) zirconium dichloride, Ind2ZrCl2, [isopropyl (cyclopentadienyl) (1-fluorenyl)] zirconiumdichloride, i-Pr (Flu) (Cp) ZrCl2, and bis (cyclopentadienyl) titanium dichloride, Cp2TiCl2, produced the larger amounts of polymer. Ph2Zn-Cp2TiCl2-MAO system gave polystyrene, PSt, whose DSC analysis indicated a major endotherm peak at 256°C. A butanone insoluble fraction of the polymer was separated from the crude PSt. The proportion of insoluble polymer depends on the metallocene employed and on the conversion to polymer.

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Authors and Affiliations

  1. Grupo Polímeros, Departamento Ciencias Químicas, Facultad de Química y Biología, Universidad de Santiago de Chile, Casilla 307, Correo 2, Santiago, Chile

    Franco M. Rabagliati, M. Verónica Cuevas & Claudio A. Terraza

  2. Departamento Ingeniería Química, Facultad Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 2777, Santiago, Chile

    Raúl Quijada

Authors
  1. Franco M. Rabagliati
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  2. Raúl Quijada
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  3. M. Verónica Cuevas
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  4. Claudio A. Terraza
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Rabagliati, F.M., Quijada, R., Cuevas, M.V. et al. Polymerization of styrene by diphenylzinc-additive systems. Polymer Bulletin 37, 13–19 (1996). https://doi.org/10.1007/BF00313813

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  • DOI: https://doi.org/10.1007/BF00313813

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