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在以加氢汽油为溶剂,MoCl_3(C_7H_(15)COO)_2(Mo)为主催化剂,(i-Bu)_2AlO〈O〉(Al)为助催化剂合成1,2-聚丁二烯的二元催化体系中,添加BF_3CH3·OEt_2等,对体系的催化活性影响显著。以的混合物为第三组份加入催化体系,较大幅度提高了钼系催化体系的活性。在Mo/Bd=8.0×10~(-5)(摩尔比),聚合5小时,丁二烯转化率可达到70％。初步搞清了钼催化体系合成的1,2-聚丁二烯中产生凝胶的条件,推测了凝胶的生成原因,考察了聚合条件对催化活性、分子量及微观结构含量的影响。
The synthesis of 1,2-polybutadiene was carried out using hydrogenated gasoline as solvent, MoCl_3 (C_7H_ (15) COO) _2 (Mo) as main catalyst and (i-Bu) _2AlO Metatalytic system, the addition of BF_3CH3 · OEt_2, etc., on the catalytic activity of the system significantly. The mixture of the third component added to the catalytic system greatly improves the catalytic activity of the molybdenum-based system. When Mo / Bd = 8.0 × 10 ~ (-5) (molar ratio), 5 hours of polymerization, butadiene conversion can reach 70%. The conditions of gel formation in 1,2-polybutadiene synthesized by molybdenum catalyst system were preliminarily determined. The reason for the formation of gel was presumed. The effects of polymerization conditions on the catalytic activity, molecular weight and microstructure were investigated.