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    • 10. 发明公开
    • THERMOPLASTISCHES ELASTOMER
    • 热塑性弹性体
    • EP0766706A1
    • 1997-04-09
    • EP95923261.0
    • 1995-06-08
    • BASF AKTIENGESELLSCHAFT
    • KNOLL, KonradGAUSEPOHL, HermannNIESSNER, NorbertBENDER, DietmarNAEGELE, Paul
    • C08F297C08J5
    • C08J5/18C08F297/04C08J2353/02
    • A rubber elastic block copolymer has at least one block A made of polymerised units of a vinyl aromatic monomer that forms a hard phase and/or a block B with diene monomers that forms a first rubber elastic (soft) phase, and at least one elastomer block B/A with polymerised units of both a vinyl aromatic monomer and a diene that forms if required a second or additional soft phase. The glass transition temperature Tg of block A is higher than 25 °C and that of blocks B or B/A is lower than 25 °C. The phase volume ratio between blocks A and B/A is selected so that the hard phase represents 1 - 40 % by volume of the total block copolymer and the diene amounts to less than 50 % by weight.
    • 橡胶弹性嵌段共聚物具有至少一个由乙烯基芳族单体的聚合单元构成的嵌段A,所述聚合单元形成硬质相和/或嵌段B与形成第一橡胶弹性(软)相的二烯单体以及至少一种弹性体 嵌段B / A与乙烯基芳族单体和二烯的聚合单元组成,如果需要,形成第二或另外的软相。 块A的玻璃化转变温度Tg高于25℃,块B或B / A的玻璃化转变温度Tg低于25℃。 选择嵌段A和B / A之间的相体积比,使得硬相占总嵌段共聚物的1-40体积%,并且二烯含量低于50重量%。