甲基铝氧烷对稀土催化体系催化异戊二烯聚合的影响  

Effect of methylaluminoxane on isoprene polymerization with rare earth catalyst

作　　者：李岩[1] 孙艳红[2] 王妍红[2] 邹向阳[2] 蔡小平[2] 

机构地区：[1]长春工业大学化学工程学院,吉林长春130012 [2]中国石油吉林石化公司研究院,吉林吉林132021

出　　处：《弹性体》2006年第6期41-44,共4页China Elastomerics

摘　　要：考察了甲基铝氧烷(MAO)作为助催化剂对稀土催化体系催化异戊二烯聚合的影响,结果表明MAO可极大地提高体系的催化活性,获得顺-1,4结构含量95%(质量分数)以上的聚异戊二烯,并且调节n(MAO)/n(Nd)和n(Al)/n(Nd)的值可有效地提高聚合产物的相对分子质量。This paper investigates the effect of methylaluminoxane(MAO) as a cocatalyst on isoprene polymerization with rare earth catalytic system.Results of the experiment indicate that MAO can improve much the activity of the catalytic system and obtain polyisoprene that the content of cis-1,4 is more than 95%.Moreover,the molecular weight of polyisoprene can be controlled effectively through adjusting the ratio of n(MAO)/n(Nd) and n(Al)/n(Nd).

关 键 词：稀土催化剂 甲基铝氧烷 异戊二烯 定向聚合 

分 类 号：TQ333.3[化学工程—橡胶工业]