公开(公告)号：US5554696A

公开(公告)日：1996-09-10

申请号：US437738

申请日：1995-05-09

申请人： Roger M. A. Fayt ,  Frederik H. van der Steen ,  Phillippe J. Teyssie ,  Judith J. B. Walhof ,  Yi-Song Yu

发明人： Roger M. A. Fayt ,  Frederik H. van der Steen ,  Phillippe J. Teyssie ,  Judith J. B. Walhof ,  Yi-Song Yu

IPC分类号： C07F1/02 ,  C08F4/42 ,  C08F4/48 ,  C08F36/04 ,  C08F297/04

CPC分类号： C08F297/042 ,  C08F36/04 ,  C08F4/48

摘要： Process for the preparation of an efficient industrial .alpha., .omega.-dilithio poly(conjugated diene) diinitiator having a peak molecular weight in the range of from 1000 to 3000, comprising the reaction of mono-organolithium initiator with diisopropenyl benzene in an apolar hydrocarbon solvent, optionally in the presence of a tertiary amine, followed by addition to the reaction mixture of a small amount of conjugated diene monomer and at least 15 vol % of an aromatic ether activator at a temperature in the range of from 0.degree. to 30.degree. C.; the use of said .alpha., .omega.-dithio initiator for the manufacture of symmetrical block copolymers by anionic polymerization, from monovinylaromatic, conjugated diene and/or polar vinyl compound monomers; and block copolymers so obtained having a combination of a narrow molecular weight distribution (Mw/Mn.ltoreq.1.20) and relatively low vinyl content (.ltoreq.18%).

摘要翻译： 制备峰分子量为1000-3000的有效工业α，ω-二硫代聚（共轭二烯）二引发剂的方法，包括在非极性烃溶剂中单有机锂引发剂与二异丙烯基苯的反应， 任选地在叔胺的存在下，然后在0℃至30℃的温度范围内加入少量共轭二烯单体和至少15体积％的芳族醚活化剂的反应混合物。 ; 使用所述α，ω-二硫代引发剂通过阴离子聚合从单乙烯基芳族共轭二烯和/或极性乙烯基化合物单体制造对称嵌段共聚物; 和如此获得的具有窄分子量分布（Mw / Mn <1.20）和相对低乙烯基含量（