INFLUENCE OF MIXED ALUMINOXANE SYSTEMS ON ETHYLENE-NORBORNENE COPOLYMERIZATION CATALYZED BY METALLOCENE

Authors
WANG Q WENG JH FAN ZQ FENG LX
Citation
Q. Wang et al., INFLUENCE OF MIXED ALUMINOXANE SYSTEMS ON ETHYLENE-NORBORNENE COPOLYMERIZATION CATALYZED BY METALLOCENE, Macromolecular rapid communications, 18(12), 1997, pp. 1101-1107
Citations number
16
Journal title
Macromolecular rapid communications → ACNP
ISSN journal
10221336
Volume
18
Issue
12
Year of publication
1997
Pages
1101 - 1107
Database
ISI
SICI code
1022-1336(1997)18:12<1101:IOMASO>2.0.ZU;2-6
Abstract
The norbornene/ethylene copolymerization was investigated using Me2SiC p2MCl2 (M = Zr, Ti)/EBAO and MAO as catalyst systems (EBAO: mixed ethy l-isobutylaluminoxane, MAO: methylaluminoxane). The copolymers were ch aracterized by DSC and C-13 NMR. Copolymers with high content of norbo rnene and high Tg were obtained with the mixed EBAO. It is suggested t hat the copolymerization is greatly influenced by the state of the ion pair of the metallocene catalyst. The effect of aluminoxane on the co mposition and the microstructure of copolymer is discussed.