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Química Nova

On-line version ISSN 1678-7064


MELLO, Ivana L. et al. Cis-1,4 polymerization of butadiene with Ziegler-Natta catalyst systems based on neodymium. Quím. Nova [online]. 2004, vol.27, n.2, pp. 277-286. ISSN 1678-7064.

Nowadays the catalyst systems based on neodymium are the ones most used in the high cis polybutadiene production. These systems contain a neodymium compound (catalyst), an alkylaluminium compound (cocatalyst) and a halogen compound (halogenating agent). The microstructure, molecular weight characteristics and the reaction activity are influenced by the nature and concentration of catalyst system components. Those characteristics are also affected by the polymerization conditions. This paper presents a brief review on 1,4-cis-butadiene polymerization on neodymium catalysts.

Keywords : high cis polybutadiene; Ziegler-Natta catalyst; neodymium catalysts.

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