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    • 10. 发明公开
    • THERMOPLASTIC RESIN COMPOSITION, COVER MEMBER AND EASILY OPENABLE CONTAINER
    • 热塑性树脂组合物,封盖部件和易开启的容器
    • EP3266830A1
    • 2018-01-10
    • EP16759014.0
    • 2016-03-03
    • MCPP Innovation LLC
    • WATANABE Naoya
    • C08L67/02B65D77/20C08L23/06C08L53/02C08L67/00
    • B65D77/20C08L23/06C08L53/02C08L67/00C08L67/02
    • The present invention provides a thermoplastic resin composition ensuring easy openability by cohesive peeling, excellent extrusion lamination moldability and sufficiently high heat seal strength and being capable of forming a sealing layer excellent in easy openability, extrusion lamination moldability, peeling appearance, etc. The present invention relates to a thermoplastic resin composition containing the following components (A) to (C) and containing from 60 to 84 % by weight of the component (A), from 3 to 23 % by weight of the component (B), and from 3 to 28 % by weight of the component (C).
      Component (A): A crystalline polyester containing an aliphatic dicarboxylic acid unit and having a melting peak temperature in the range of 110 to 140°C.
      Component (B): At least either one of an amorphous polyester and a polyolefin.
      Component (C): A styrene-based thermoplastic elastomer composed of at least one member out of the group consisting of a block copolymer having a polymer block P derived from a vinyl aromatic compound and a polymer block Q derived from a conjugated diene, and a hydrogenation product thereof. The total amount of 1,2- and 3,4-bond units in the block Q is 60 mol% or more.
    • 本发明提供一种热塑性树脂组合物,其通过凝聚剥离确保易开封性,优异的挤出层压成型性和充分高的热封强度,并且能够形成易开封性,挤出层压成型性,剥离外观等优异的密封层。本发明 涉及含有下述成分(A)〜(C),且含有60〜84重量%的成分(A),3〜23重量%的成分(B)和3 至28重量%的组分(C)。 成分(A):含有脂肪族二羧酸单元且熔点峰值温度为110〜140℃的结晶性聚酯。 组分(B):无定形聚酯和聚烯烃中的至少一种。 (C)成分:由具有衍生自乙烯基芳香族化合物的聚合物嵌段P和衍生自共轭二烯的聚合物嵌段Q的嵌段共聚物,以及由具有衍生自共轭二烯的聚合物嵌段Q的嵌段共聚物中的至少一种构成的苯乙烯系热塑性弹性体, 其氢化产物。 嵌段Q中的1,2-和3,4-键单元的总量为60摩尔%以上。