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    • 4. 发明公开
    • BLOCK COPOLYMER AND ADHESIVE COMPOSITION
    • BLOCKCOPOLYMER UND KLEBSTOFFZUSAMMENSETZUNG
    • EP3098264A1
    • 2016-11-30
    • EP15740534.1
    • 2015-01-22
    • ASAHI KASEI KABUSHIKI KAISHAJapan Elastomer Co., Ltd.
    • NAKATANI, KosukeARAKI, YoshifumiSHIBUYA, KentaHISASUE, TakahiroMORITOU, Kazuo
    • C08L53/02C08F8/04C09J11/06C09J11/08C09J107/00C09J109/00C09J125/00C09J153/02
    • C09J153/02C08L53/02C08L2205/025C09J107/00C09J109/00
    • There is provided a block copolymer composition having 20% by mass or more and 90% by mass or less of a component (A) and 10% by mass or more and 80% by mass or less of a component (B),
      wherein the component (A) is a block copolymer having a polymer block mainly comprising a vinyl aromatic monomer unit and a polymer block mainly comprising a conjugated diene monomer unit, and having a weight-average molecular weight of 30,000 or higher and 190,000 or lower; and
      the component (B) is a block copolymer having a polymer block mainly comprising a vinyl aromatic monomer unit and a polymer block mainly comprising a conjugated diene monomer unit, and having a weight-average molecular weight of 60,000 or higher and 500,000 or lower,
      wherein the hydrogenation ratio of the conjugated diene monomer units in the component (A) and the component (B) is 10 to 80% by mol to the total amount of the conjugated diene monomer units of the component (A) and the component (B); and
      the ratio of the weight-average molecular weight of the component (B) to the weight-average molecular weight of the component (A) is 1.3 to 10.
    • 提供了20质量%以上且90质量%以下的成分(A)和10质量%以上且80质量%以下的成分(B)的嵌段共聚物组合物,其中, 组分(A)是具有主要包含乙烯基芳族单体单元的聚合物嵌段和主要包含共轭二烯单体单元的聚合物嵌段,重均分子量为30,000以上且190,000以下的嵌段共聚物; 组分(B)是具有主要包含乙烯基芳族单体单元的聚合物嵌段和主要包含共轭二烯单体单元的聚合物嵌段,重均分子量为60,000以上且500,000以下的嵌段共聚物, 其中,组分(A)和组分(B)中共轭二烯单体单元的氢化比例相对于组分(A)和组分(B)的共轭二烯单体单元的总量为10至80摩尔% ); 成分(B)的重均分子量与成分(A)的重均分子量的比例为1.3〜10。