为获得适中乙烯基含量的液体聚丁二烯为目的,对Co(naph)2-Al2(C2H5)3Cl3-P(OPh)3,催化体系进行了较为系统的研究,考察了该体系的催化剂配比、浓度及供电子试剂对分子量、微观结构和转化率的影响.实验结果表明,该体系在一定的条件下可以制备出分子量在700—3500、1,2结构含量在35%-40%且转化率高于55%的液体聚丁二烯.
Liquid polybutadiene with desirable 1,2-units content was synthesized by Co(naph) 2- Al2(C2H5)3Cl3-P(OPh)3 catalyst system. It was shown that liquid polybutadiene having adequate 1,2-unit content ( vinyl = 35 % -40% ), molecular weight (Mn = 700-3500), and acceptabele conversion ( ≥ 55 % ) can synthesized after optimizing polymerization conditions.