Citation:
LI Yan-Rong, LI Yue-Sheng, SHI Bao-Chuan. Addition Polymerization of Norbornene by Salicylaldimnato-nickel(Ⅱ) Complex[J]. Chinese Journal of Applied Chemistry,
;2002, 19(7): 617-620.
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The salicylaldimnato Ni(Ⅱ) complexes activated with modified methylaluminoxane(MMAO) as catalysts were employed in addition polymerization of norbornene to give soluble polymer with hight molecular weight. The catalytic activity, polymer yield, and molecular weight of polymer product were found significantly depended on the reaction condifions, such as n(Al)/n(Ni) ratio, monomer concentration and polymerization reaction temperature and time. The catalyst activity of up to 1.3×107g/(mol·h), and viscosity-average molecular weight of polymer of up to 106 were obtained at optimum condition.
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