Polymerization of1,3-Butadiene with Novel Calixarene Rare Earth Complex Based Homogeneous Catalysts

Abstract

Abstract: Neodymium based homogeneous catalysts for the polymerization of1,3-butadiene, calixarene neodymium(C[n]Nd_xCl_y)/Al(i-Bu)₃and C[n]Nd/Al(i-Bu)₃/Al(i-Bu)₂Cl were examined.The binary systems based on C[n]Nd_xCl_ywere found to be active even in the absence of halogen source, while adding Al(i-Bu)₂Cl as the third component, the catalytic activity was improved.Polymer obtained has M_vabout1×10⁵～2×10⁵and cis-1,4 content90%. The ternary systems based on C[n]Nd also had an activity of butadiene polymerization, the effect of different calixarenes on the catalytic activity of ternary system is in the order of C6>C4>C8

Key words: Rare earth catalyst, Calixarene, 1,3-Butadiene polymerization

CLC Number:

O632

TrendMD:

NI Xu-Feng, LI Wei-Shi, ZHANG Yi-Feng, SHEN Zhi-Quan, ZHANG Tian-Xu. Polymerization of1,3-Butadiene with Novel Calixarene Rare Earth Complex Based Homogeneous Catalysts[J]. Chem. J. Chinese Universities, 2000, 21(12): 1936.

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Polymerization of1,3-Butadiene with Novel Calixarene Rare Earth Complex Based Homogeneous Catalysts

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