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Copolymerization of Propene and 5-Vinyl-2-Norbornene: A Simple Route to Polar Poly(propylene)s

✍ Scribed by Yann Sarazin; Gerhard Fink; Klaus Hauschild; Manfred Bochmann

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
136 KB
Volume
26
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: The metallocenes rac‐C~2~H~4~(Ind)~2~ZrCl~2~ (1), rac‐Me~2~Si(Ind)~2~ZrCl~2~ (2), and rac‐Me~2~Si(2‐Me‐benz[e]Ind)~2~ZrCl~2~ (3) efficiently copolymerize propene and 5‐vinyl‐2‐norbornene (VNB). 1 and 2 give a high VNB content and high productivities, whereas 3 gives moderate incorporation. Surprisingly, precatalysts 1 and 2, which have very closely related structures, showed very different reactivities toward VNB, with 1 having a greater affinity for VNB than for propene. The copolymers are quantitatively converted into polyolefins with polar functionalities.
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