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    • 14. 发明授权
    • Thermoplastic molding material
    • 热塑性成型材料
    • US5700876A
    • 1997-12-23
    • US527496
    • 1995-09-13
    • Konrad KnollHermann Gausepohl
    • Konrad KnollHermann Gausepohl
    • C08F4/48C08F285/00C08F287/00C08F297/04C08F297/02
    • C08F287/00C08F297/04
    • In a process for preparing a thermoplastic molding material comprising from 80 to 50% by weight of a hard matrix of an anionically polymerized aromatic vinyl compound and from 20 to 50% by weight of a soft phase uniformly distributed in the hard matrix, the percentages being based in each case on the sum of the hard matrix and soft phase, a rubber-elastic block copolymer based on an aromatic vinyl compound and on an alkadiene in a weight ratio of 5:95 to 55:45 is anionically polymerized in a first stage, if desired the living chain ends are capped and the aromatic vinyl compound is polymerized in the presence of the block copolymer with renewed addition of an anionic initiator and while stirring, and the living chain ends are finally (re)closed.
    • 在制备热塑性成型材料的方法中,其包含80至50重量%的阴离子聚合的芳族乙烯基化合物的硬质基质和均匀分布在硬质基质中的20至50重量%的软相,百分比为 在每种情况下基于硬质基质和软相的总和,基于芳族乙烯基化合物和重量比为5:95至55:45的链二烯的橡胶弹性嵌段共聚物在第一阶段中阴离子聚合 如果需要,活性链末端被封端,并且在嵌段共聚物存在下聚合芳香族乙烯基化合物,同时重新加入阴离子引发剂并在搅拌的同时终止活性末端的封闭。