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    • 10. 发明授权
    • Preparation of block copolymers by ionic polymerization
    • 通过离子聚合制备嵌段共聚物
    • US5587423A
    • 1996-12-24
    • US135406
    • 1993-10-13
    • Franz BrandstetterHermann GausepohlReiner Thiele
    • Franz BrandstetterHermann GausepohlReiner Thiele
    • C08F297/04
    • C08F297/04
    • In a process for preparing block copolymers of styrene or its equivalents on the one hand and of butadiene or its equivalents on the other hand by sequential anionic polymerization, in which a first monomer and the organometallic compound serving as initiator are first of all combined to form a reaction mixture and the reaction is continued until at least part of the first monomer has been consumed, and then at least one further monomer is added and is in each case partially or completely reacted, the polymerization is carried out continuously in a conventional manner in a tubular reactor, the reaction of in each case one monomer being carried out in each case in one reactor section and at least two reactor sections being separated by a mixing stretch.
    • 在一方面通过连续阴离子聚合制备苯乙烯或其等同物的丁二烯或其等同物的嵌段共聚物的方法,其中第一单体和用作引发剂的有机金属化合物首先组合形成 反应混合物并继续反应直到至少部分第一单体已被消耗,然后加入至少一种其它单体,并且在每种情况下部分或完全反应,聚合以常规方式在 管状反应器,在每种情况下的反应中,一种单体在每种情况下在一个反应​​器部分中进行,并且至少两个反应器部分通过混合拉伸分离。