Polymerization of ethylene with new diimine complexes of late transition metals

Authors
Laine, TV Lappalainen, K Liimatta, J Aitola, E Lofgren, B Leskela, M
Citation
Tv. Laine et al., Polymerization of ethylene with new diimine complexes of late transition metals, MACRO RAPID, 20(9), 1999, pp. 487-491
Citations number
21
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULAR RAPID COMMUNICATIONS
ISSN journal
10221336 → ACNP
Volume
20
Issue
9
Year of publication
1999
Pages
487 - 491
Database
ISI
SICI code
1022-1336(199909)20:9<487:POEWND>2.0.ZU;2-W
Abstract
Three pyridylimine based complexes of Ni-II and Co-II were reacted with met hylaluminoxane (MAO) and tested as catalysts in ethylene polymerization. Th e two nickel catalysts produced mainly methyl branched polymers with good t o moderate activity, while the cobalt compound showed only marginal activit y. Reaction conditions strongly affect the polymer properties, such as mole cular weight, melting temperature, degree of branching, and chain end unsat uration type.