调节镍系顺丁橡胶分子量的研究

Control of molecular weight of cis-1,4-polybutadiene with nickel catalyst

研究了改变聚合工艺条件及加入分子量调节剂D、C对顺丁橡胶分子量的调节作用。结果表明 :Ni-Al-B体系中改变聚合工艺条件不能大幅度调节顺丁橡胶的分子量 ;加入分子量调节剂D可以大幅度调节顺丁橡胶的分子量 ;

The effects of polymerization conditions and components of D and C on molecular weight of polybutadiene were studied respectively. The molecular weight of polybutadiene changed with polymerization conditions in a narrow range by Ni-Al-B catalyst system. The changing range of molecular weight of polybutadiene was widen largely by the addition of D component into Ni-Al-B catalyst. With the increase of C component the molecular weight of polybutadiene obtained decreased.