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Ultrahigh Molecular Weight Ethene Copolymers from Metallocene and Ziegler Catalysts
Author(s) -
Hasebe Koichi,
Fujiwara Akio,
Nozaki Takashi,
Miyamoto Koichi
Publication year - 2008
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200751423
Subject(s) - metallocene , copolymer , catalysis , post metallocene catalyst , materials science , polymer chemistry , organic chemistry , polymerization , chemistry , composite material , polymer
In this study, ultrahigh molecular weight polyethene homopolymer and copolymer were successfully produced with the metallocene and the Ziegler catalyst system. In case with the metallocene catalyst system, viscosity average molecular weight of the homopolymer was controlled from 2 million to 10 million. Also, the molecular weight of the copolymer was reached up to 6 million. In case with the Ziegler catalyst system, the molecular weight of the copolymer was reached up to 4 million. The transparency of the copolymer by the Ziegler catalyst, with which the copolymer with better uniformity was produced, could be comparable with that by the metallocene catalyst.