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Polymerization of Vinyl Ethers by ( α ‐diimine)Ni II /Methylaluminoxane Catalysts
Author(s) -
Kim Il,
Ha Yun Sun,
Ha ChangSik
Publication year - 2003
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.200300027
Subject(s) - methylaluminoxane , diimine , catalysis , polymer chemistry , polymerization , polymer , ligand (biochemistry) , aryl , vinyl ether , chemistry , ether , nickel , yield (engineering) , materials science , organic chemistry , metallocene , copolymer , alkyl , biochemistry , receptor , metallurgy
Polymerizations of vinyl ethers are carried out with ( α ‐diimine)nickel( II ) catalysts in the presence of methylaluminoxane. Effects of structural variations of the ligand on the activities of catalysts and polymer microstructure are described. The catalysts prepared by changing the bulkiness of ligand substituents in the ortho aryl position result in no specific trends terms of the yield and molecular weight of polymer. Poly(vinyl ether)s are atactic regardless of the structure of the catalyst used.