多核钕-铝双金属配合物催化丁二烯聚合V.甲基铝氧烷的影响

Butadiene Polymerization Catalyzed by Polynuclear Nd-Al Bimetallic Complex V. Effect of Methylaluminoxane

以外添加的方式，考查了甲基铝氧烷（MAO）对多核钕－铝双金属配合物催化了二烯聚合的影响，并与烷基铝存在下的作用结果相比较．结果表明，MAO用量较低时（n（Al）／n（Nd）在5～20之间），即可较烷基铝更大程度提高稀土配合物的催化活性，获得顺式聚了二烯；MAO的链转移作用较烷基铝的低．

The effect of methylaluminoxane(MAO) on butadiene polymerization catalyzed bypolynuclear Nd-Al bimetallic complex has been examined. Compared with alkylaluminiumMAO could improve the activity of the catalyst system to a higher extent even at n (Al)/n(Nd) 5～20 mol/mol. The chain transfer seems to be lower by using MAO than that by using alkylaluminium.