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Polymerization of styrene by diphenylzinc-additive systems. Part IX. New experiments with Ph2Zn-Met-MAO systems

✍ Scribed by Rabagliati, Franco M; Pérez, Mónica; Cancino, Rodrigo; Quijada, Raúl

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 70 KB
Volume: 48
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199908)48:8<681::aid-pi199>3.0.co;2-p

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✦ Synopsis

The combined systems diphenylzinc±metallocene±methylaluminoxane (Ph 2 Zn±Met±MAO) have proved able to induce styrene polymerization, producing polystyrene with a variable content of stereoregular polymer. The tacticity of the obtained polymer is strongly dependent on the nature of the metallocene and on its molar ratio toward diphenylzinc (Met/Ph 2 Zn). The stereoregular polymer was syndiotactic according to its crystalline melting temperature T m , 13 C NMR spectrum, and insolubility in boiling butanone.

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