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Copolymerization of Propene and 5‐Vinyl‐2‐Norbornene: A Simple Route to Polar Poly(propylene)s
Author(s) -
Sarazin Yann,
Fink Gerhard,
Hauschild Klaus,
Bochmann Manfred
Publication year - 2005
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200500241
Subject(s) - propene , norbornene , copolymer , polymer chemistry , chemistry , materials science , organic chemistry , catalysis , polymer
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.