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Study of low catalytic activity systems (biscyclopentadienyl complexes–aluminoxane) on olefin polymerization
Author(s) -
Justino Jorge,
Marques Maria Mercês,
Correia Sandra,
Dias A. Romão,
Lemos Francisco,
Ribeiro F. Ramoa
Publication year - 1997
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199712)44:4<517::aid-pi861>3.0.co;2-4
Subject(s) - methylaluminoxane , polymerization , catalysis , polymer chemistry , ethylene , metallocene , propene , olefin polymerization , materials science , olefin fiber , chemistry , organic chemistry , polymer
Olefin polymerization using low activity catalyst systems: Cp 2 WCl 2 –methylaluminoxane, [Cp 2 Mo(CH 3 ) 2 ][PF 6 ]–methylaluminoxane and Cp 2 Mo(CH 3 ) 2 –methylaluminoxane, is described. All these catalyst systems were studied in ethylene and propylene polymerization; however, they only showed catalytic activity for ethylene. Only one type of methylaluminoxane (MAO) was used, prepared in an Al/H 2 O ratio of 2. The kinetics of polymerization were examined and the experimental data (either presented here or in previous papers) were fitted to the kinetic models developed previously and now extended to account for the methylaluminoxane effect. ©1997 SCI