HOT-MELT ADHESIVE
    1.
    发明公开
    HOT-MELT ADHESIVE 审中-公开
    热熔胶粘剂

    公开(公告)号:EP3124566A1

    公开(公告)日:2017-02-01

    申请号:EP15769713.7

    申请日:2015-03-20

    摘要: Provided are a hot-melt adhesive having high flowability in a molten state and exhibiting high adhesion strength in bonding PP nonwoven fabrics and further exhibiting high adhesion strength in bonding PE film-PP nonwoven fabric, and a base polymer for a hot-melt adhesive. The hot-melt adhesive contains (A) a propylene-based polymer satisfying the following (Ai) to (Aiv), and (B) an olefin-based copolymer satisfying the following (Bi) and (Bii); and the base polymer for a hot-melt adhesive consists of a mixture of (A) a propylene-based polymer satisfying the following (Ai) to (Aiv) and (B) an olefin-based copolymer satisfying the following (Bi) and (Bii) and satisfies the following (1) and (2). (Ai) the melting point is 120°C or lower, (Aii) the Mw is 10,000 to 150,000, (Aiii) the Mw/Mn is 2.5 or less, (Aiv) the penetration is 8 or less, (Bi) the penetration is 15 or more, (Bii) the melting point is 90°C or higher, (1) the tensile elastic modulus at 23°C is 400 MPa or less, and (2) the semi-crystallization time at 23°C is 20 minutes or less.

    摘要翻译: 本发明提供在熔融状态下具有高流动性并且在粘合PP非织造织物时表现出高粘合强度并且进一步在粘合PE膜-PP非织造织物和用于热熔粘合剂的基础聚合物时表现出高粘合强度的热熔粘合剂。 (A)满足以下(Ai)〜(Aiv)的丙烯系聚合物和(B)满足以下(Bi)和(Bii)的烯烃系共聚物的热熔粘接剂。 (A)满足下述(Ai)〜(Aiv)的丙烯系聚合物和(B)满足以下(Bi)和(B-1)的烯烃系共聚物的混合物构成的热塑性粘合剂用基础聚合物, Bii)并且满足以下(1)和(2)。 (Ai)熔点为120℃以下,(Aii)Mw为10,000〜150,000,(Aiii)Mw / Mn为2.5以下,(Aiv)渗透率为8以下,(Bi)渗透率 (Bii)的熔点为90℃以上,(1)23℃下的拉伸弹性模量为400MPa以下,(2)23℃下的半结晶化时间为20 分钟或更少。