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    • 9. 发明申请
    • PREPARATION METHOD OF VINYL AROMATIC HYDROCARBON-CONJUGATED DIENE BLOCK COPOLYMER USING COUPLING REACTION WITH IMPROVED ION STABILITY
    • 乙烯芳香烃共轭二烯嵌段共聚物的改进离子稳定性的耦合反应制备方法
    • WO2011059225A3
    • 2011-10-27
    • PCT/KR2010007913
    • 2010-11-10
    • LG CHEMICAL LTDLEE CHOON HWACHUN MOON SEOK
    • LEE CHOON HWACHUN MOON SEOK
    • C08F297/04C08F2/44C08F236/10
    • C08F297/044
    • The present invention relates to a preparation method of a vinyl aromatic hydrocarbon-conjugated diene block copolymer using coupling polymerization with improved ion stability. According to the present invention, the preparation method of a vinyl aromatic hydrocarbon-conjugated diene block copolymer comprises the following steps of: (a) polymerizing a vinyl aromatic hydrocarbon monomer with an organolithium compound polymerization initiator in a hydrocarbon solvent to prepare a first mixture solution containing a vinyl aromatic hydrocarbon block; and (b) adding a conjugated diene monomer to the first mixture solution of the step (a) to form a conjugated diene block to the terminal of the vinyl aromatic hydrocarbon block, thereby preparing a second mixture solution containing a vinyl aromatic hydrocarbon block-conjugated diene block copolymer, wherein the preparation method comprises the step of (c) adding a Lewis acid to the first mixture solution before the initiation of polymerization of the vinyl aromatic hydrocarbon monomer of the step (a), during polymerization, or the termination of polymerization.
    • 乙烯基芳香烃 - 共轭二烯嵌段共聚物的制备方法本发明涉及使用离子稳定性提高的偶联聚合制备乙烯基芳香烃 - 根据本发明,乙烯基芳香烃 - 共轭二烯嵌段共聚物的制备方法包括以下步骤:(a)使乙烯基芳烃单体与有机锂化合物聚合引发剂在烃溶剂中聚合以制备第一混合物溶液 含有乙烯基芳烃嵌段; 和(b)在步骤(a)的第一混合溶液中加入共轭二烯单体以在乙烯基芳烃嵌段的末端形成共轭二烯嵌段,由此制备含乙烯基芳烃嵌段共轭物的第二混合溶液 二烯嵌段共聚物,其中所述制备方法包括以下步骤:(c)在步骤(a)的乙烯基芳烃单体的聚合引发之前,在聚合期间或聚合的终止期间,将路易斯酸添加至第一混合物溶液 。