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Catalytic behavior of Co(II) complexes with 2‐(benzimidazolyl)‐6‐(1‐(arylimino)ethyl)pyridine ligands on isoprene stereospecific polymerization
Author(s) -
Wang Geng,
Jiang Xiubo,
Zhao Weizhen,
Sun WenHua,
Yao Wei,
He Aihua
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39703
Subject(s) - isoprene , polymerization , stereospecificity , catalysis , polymer chemistry , pyridine , chemistry , molar ratio , copolymer , cobalt , organic chemistry , polymer
Polymerization behaviors of isoprene under different polymerization conditions with 2‐(1‐methyl‐2‐benzimidazolyl)‐6‐(1‐(arylimino)ethyl) pyridine cobalt(II) dichloride and ethylaluminum sesquichloride or diethylaluminum chloride catalyst system were evaluated. The effects of temperature, solvents, [Al]/[Co] molar ratio, and the structure of cocatalysts on the catalyst activity and the characteristics of polyisoprenes (PIs) were investigated and optimum conditions for synthesizing stereoselective PIs were obtained. The results showed that pre‐catalyst activity was strongly influenced by polymerization temperature, [Al]/[Co] molar ratio and solvents, and the kinds of solvents and cocatalysts affected the microstructures of PIs greatly. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39703.