Catálise estereoespecífica de estireno por titanocenos alquil-substituídos do tipo (RCp)2TiCl2

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Published: Dec 4, 2000
DOI: https://doi.org/10.26850/1678-4618eqj.v25.1.2000.p97-108
Keywords:
Titanocenos substituídos, Catálise homogênea, Poliestileno sindiotático

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Brasílio Carvalho de Araújo Pereira
Universidade Estadual Paulista, Instituto de Química, Araraquara, Brasil.
Stanlei Ivair Klein
Universidade Estadual Paulista, Instituto de Química, Araraquara, Brasil.
Marcos Lopes Dias
Universidade Federal do Rio de Janeiro, Instituto de Macromoléculas Profa Eloisa Mano, Rio de Janeiro, Brasil.

Abstract

Uma série de sete complexos alquil substituídos do tipo (RCp)2TiCl2 (R= H, etila, n-propila, iso-propila, n-butila, iso-amila, ciclo-hexila) foi preparada juntamente com o ainda inédito contendo R= sec-butila, e o efeito do substituinte na polimerização do estireno foi investigada à temperaturas de polimerização de 0 e 50 oC. Foi encontrado que R = n-butila maximiza a produção de poliestireno sindiotático. Ligantes alquilas com R = RCH2- são superiores aos R = RR’CH- e ao precursor Cp2TiCl2 na produção de poliestireno sindiotático de alto peso molecular.

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How to Cite
Pereira, B. C. de A. ., Klein, S. I., & Dias, M. L. (2000). Catálise estereoespecífica de estireno por titanocenos alquil-substituídos do tipo (RCp)2TiCl2. Eclética Química, 25(1), 97–108. https://doi.org/10.26850/1678-4618eqj.v25.1.2000.p97-108
Issue
Vol. 25 No. 1 (2000): Eclética Química
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Original articles
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