MULTILAYER STRUCTURE INCLUDING A LAYER OF A SPECIFIC COPOLYAMIDE AND A BARRIER LAYER
    1.
    发明申请
    MULTILAYER STRUCTURE INCLUDING A LAYER OF A SPECIFIC COPOLYAMIDE AND A BARRIER LAYER 审中-公开
    多层结构,包括一个特定的共聚酰胺层和一个障碍层

    公开(公告)号:US20140299220A1

    公开(公告)日:2014-10-09

    申请号:US14111209

    申请日:2012-04-12

    IPC分类号: B32B1/08 B32B27/34 B32B27/08

    摘要: The invention relates to a multilayer structure including: a so-called outer layer (L1) consisting of a composition that primarily includes one or more semicrystalline copolyamides (H), the melting point of which is at least 220° C. and which contains at least 80 mol % of the following two units (s) and (a), wherein the (s) unit denotes one or more semiaromatic (s) units consisting of one of more sub-units from aromatic diacid (sr) and one or more sub-units from aliphatic diamine (sa) having 9 to 13 carbon atoms, and the (a) unit denotes one or more aliphatic units having 8 to 13 carbon atoms per nitrogen atom, the molar ratio (s)/(a) being 1 to 3; and a layer (L2) consisting of a composition primarily containing one or more tetrafluoroethylene (TFE) copolymers, said TFE copolymer being necessarily functionalized when layer (L2) is in contact with layer (L1) or with an intermediate layer that primarily includes one or more polyamides. The invention also relates to the uses of said multilayer structure for transporting fluids in the automotive field.

    摘要翻译: 本发明涉及一种多层结构,其包括:所谓的外层(L1),其由主要包含一种或多种半结晶共聚酰胺(H)的组合物组成,其熔点至少为220℃, 至少80mol%的以下两个单元和(a),其中所述单元表示由芳族二酸(sr)和一个或多个单体组成的更多亚单元之一的一个或多个半芳族单元 具有9至13个碳原子的脂族二胺(sa)的亚单元,(a)单元表示每个氮原子具有8至13个碳原子的一个或多个脂族单元,摩尔比(s)/(a)为1 到3; 和由主要包含一种或多种四氟乙烯(TFE)共聚物的组合物组成的层(L2),当层(L2)与层(L1)接触时,所述TFE共聚物必须官能化,或者与主要包含一种或多种 更多的聚酰胺。 本发明还涉及用于在汽车领域中输送流体的所述多层结构的用途。