不同催化剂体系对聚异丁烯端基结构的影响  

EFFECT OF DIFFERENT CATALYST SYSTEMS ON END-GROUP STRUCTURES OF POLYISOBUTENES

作　　者：刘苹[1] 王京[1] 邵潜[1] 邓景辉[1] 

机构地区：[1]石油化工科学研究院,北京100083

出　　处：《石油学报（石油加工）》2001年第2期72-78,共7页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：通过测定异丁烯的聚合产物聚异丁烯的末端结构 ,着重研究了 BF3/醇、BF3/ H2 O和 Al Cl3/ H2 O催化剂体系对聚异丁烯的末端结构的影响。实验结果表明 ,BF3/醇配位催化剂体系聚合得到的聚异丁烯的末端结构主要是α-烯烃结构 ;而 BF3/ H2 O和 Al Cl3/ H2 O体系聚合得到的聚异丁烯末端结构主要是 β-烯烃结构。在 BF3/醇催化剂中 ,当 BF3与醇的摩尔比为 1时 ,聚异丁烯的末端 α-烯烃含量达到 80 %以上并且相对分子质量分布系数为The end group structures of highly reactive polyisobutenes(PIB)prepared by three different catalyst systems of BF 3/alcohole complex catalyst, BF 3/H 2O and AlCl 3/H 2O were studied by using FT IR and 13 C NMR in an effort to understand the termination mechanisms in polymerization Experimental results show that more than eighty percent of end groups can be classified as the groups of α olefin and relative molecular mass distribution is 2 when molar ratio of alcohol to BF 3 is 1 In contrast, β olefin is dominant in polyisobutenes produced with BF 3/H 2O or AlCl 3/H 2O catalysts

关 键 词：高反应性聚异丁烯 配位催化剂 末端烯烃 相对分子质量分布 

分 类 号：TQ325.15[化学工程—合成树脂塑料工业]