摘要
Cis-1, 4-polybutadiene polymerized with lanthanide coordination catalyst (Ln-PB) has been developed in China. It possesses a cis-content greater than 97%, and nearly 100% recently (Table 1). The Ln-PB has been characterized and compared with other PB’s polymerized with Co-, Ni-and U-catalytic systems. Most of the characterization methods for structure and viscoelastic properties are similar to those reported for Ni-PB^2.
