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Polymerization of 1‐vinylcyclohexene in the presence of group 4 metallocenes – MAO catalysts
Author(s) -
Longo Pasquale,
Grassi Alfonso,
Grisi Fabia,
Milione Stefano
Publication year - 1998
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.1998.030190501
Subject(s) - methylaluminoxane , cyclopentadienyl complex , tacticity , metallocene , polymerization , isopropyl , polymer chemistry , catalysis , polymer , chemistry , materials science , organic chemistry
1‐Vinylcyclohexene was polymerized in the presence of several homogeneous catalytic systems consisting of methylaluminoxane and group 4 metallocenes such as CpTiCl 3 , [isopropyl(cyclopentadienyl)(1‐fluorenyl)]ZrCl 2 , rac ‐[ethylenebis(1‐indenyl)] ZrCl 2 , (CH 3 ) 2 Si(Cp) 2 ZrCl 2 , CpZrCl 3 . The structure of the polymers depends on the catalyst. In fact, with CpTiCl 3 , [isopropyl(cyclopentadienyl)(1‐fluorenyl)]ZrCl 2 and rac ‐[ethylenebis‐(1‐indenyl)]ZrCl 2 the polymers are chemo‐, regio‐ and stereoregular with 1,4 cis , 1,4 trans and 1,2 isotactic structure, respectively.