ADHESIVE FOR APOLAR SUBSTRATES
    8.
    发明申请
    ADHESIVE FOR APOLAR SUBSTRATES 审中-公开
    胶粘剂用于APOLAR基材

    公开(公告)号:US20090163660A1

    公开(公告)日:2009-06-25

    申请号:US12327855

    申请日:2008-12-04

    IPC分类号: C08L53/00

    摘要: A pressure-sensitive adhesive which develops a high bond strength to substrates of low surface energies, even at low temperatures. The adhesive is composed of a first block copolymer A-B and a second block copolymer which is composed of at least two and not more than eleven connected subunits A-B, A being in each case a polymer block comprising vinylaromatic monomer units and B being in each case a poly(1,3-diene). The first block copolymer is present in the adhesive in a fraction of at least 50% by weight, based on the total mass of the block copolymers in the adhesive. The adhesive additionally contains tackifier resins, of which at least 30% by weight are liquid at room temperature and which are miscible with the polymer blocks B, but not with the polymer blocks A. An adhesive tape with the pressure-sensitive adhesive is also described.

    摘要翻译: 即使在低温下也能够发挥与低表面能的基材的高结合强度的压敏粘合剂。 粘合剂由第一嵌段共聚物AB和第二嵌段共聚物组成,第二嵌段共聚物由至少两个并且不超过十一个连接的亚基AB组成,A在每种情况下都是包含乙烯基芳族单体单元的聚合物嵌段,并且每种情况下为B 聚(1,3-二烯)。 基于粘合剂中的嵌段共聚物的总质量,第一嵌段共聚物以至少50重量%的份数存在于粘合剂中。 粘合剂另外含有增粘剂树脂,其中至少30重量%在室温下为液体,并且可与聚合物嵌段B混溶,但不与聚合物嵌段A混合。还描述了带有压敏粘合剂的粘合带 。