【摘要】 研究了Ｎｉ（ｎａｐｈ）２－Ａｌ（ｉ－Ｂｕ）３－（ＢＦ３·ＯＥｔ２＋ＲＯＨ）体系催化丁二烯聚合的特点，考查了ＲＯＨ／Ｂ摩尔比、Ａｌ／Ｎｉ摩尔比、Ｎｉ／Ｂｄ摩尔比、Ａｌ／Ｂ摩尔比等反应条件对聚合活性及聚合产物分子量的影响。实验结果表明，该体系中ＲＯＨ的加入不仅保持了体系较高的聚合活性，而且大大提高了聚合物分子量，ＲＯＨ／Ｂ＝１为最佳值。Ａｌ／Ｎｉ比、Ｎｉ／Ｂｄ比的变化对聚合活性和聚合物分子量影响不大，Ａｌ／Ｂ比的变化对聚合活性和聚合物分子量影响显著。更多还原

【Abstract】 he behaviour of butadiene polymerization with Ni(naph)2(Ni)-Al(i-Bu)3(Al)-BF3·OEt2(B) +ROH catalyst system was investigated.The effects of polymerization conditions on the catalytic activity and the molecular weight were also examined.It revealed that the high-activity-range of Al/B mole ratio was widen and the molecular weight could be increased effectively with ROH as the fourth composition.The optimum ROH/B mole ratio of the new nickel catalyst system was 1.The results showed that the catalytic activity and the molecular weight were greatly influenced with Al/B mole ratio changing, while they were little influenced with Al/Ni、Ni/Bd mole ratio.更多还原