Effect of allyl halide on polymerization of butadiene with Ziegler-Natta catalyst of molybdenum system& mo(ⅳ) and Mo(ⅴ) catalyst system 钼系Ziegler-Natta催化剂引发丁二烯聚合反应中烯丙基卤的作用&四价钼、五价钼催化体系
It is found that the allyl halide can considerably adjust the molecular weights, and also in some degree their distribution. 发现烯丙基卤可以大幅度调节聚合物的分子量,对分子量分布也有一定的调节作用。
The effect of halogen aluminium ethyl on the polybutadiene synthesis is not the same as that of allyl halide and the former acts as a chain end in the system. 卤代二乙基铝的影响效果与烯丙基卤不同,在本体系中起链终止作用。