Date of Publication:2010-01-01

Journal:合成橡胶工业

Volume:33

Issue:1

Page Number:11-15

ISSN No.:1000-1255

Abstract:The solution polymerization of 1,3-butadiene(Bd) was investigated in styrene (St) with the catalyst system comprised of neodymium phosphonate Nd(P_(507))_3(Nd),Al(i-Bu)_2H(Al) and Et_3Al_2Cl_3(Cl), the effects of solvent, Al/Nd, Cl/Nd and polymerization temperature on the polymerization of Bd were examined. The results indicated that the selective polymerization of Bd was achieved in St by the above catalyst. The polymer yield was up to 90% at 50 ℃, Al/Nd(mole ratio) of 10 and Cl/Nd(mole ratio) of 2.0. The produced polymer had mole fraction of 1,2-unit of 4%, mole fraction of cis-1,4-unit of 90% and mole fraction of St unit of bellow 4%.

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