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Efficient Terpolymerization of Ethylene and Styrene with 1,7‐Octadiene by Aryloxo Modified Half‐Titanocenes–Cocatalyst Systems: Efficient Introduction of the Reactive Functionality
Author(s) -
Apisuk Wannida,
Nomura Kotohiro
Publication year - 2014
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201400143
Subject(s) - comonomer , styrene , chemistry , ethylene , polymer chemistry , polymer , copolymer , catalysis , organic chemistry
Terpolymerization of ethylene and styrene (St) with 1,7‐octadiene (OD) using aryloxo‐modified half‐titanocenes, Cp′ TiCl 2 (O‐2,6‐ i Pr 2 C 6 H 3 ) [Cp′ = Cp* ( 1 ), t BuC 5 H 4 ( 2 ), 1,2,4‐Me 3 C 5 H 2 ( 3 )], proceeds with high catalytic activity and efficient comonomer incorporation, affording high‐molecular‐weight polymers with unimodal molecular‐weight distributions (uniform compositions). An efficient introduction of the reactive functionality, terminal olefinic double bonds, into the side‐chain is attained by adopting this method by incorporation of OD without cyclization: the comonomer contents (St, OD) can be controlled by varying the comonomer concentration charged. The resultant polymers possess negligible resonance, ascribed to St–OD repeated insertion.