The present invention provides a layered composite, which includes the following
layers: (I) a layer I composition including: (a) from 0 to 80 part by weight of at least one
polyamide selected from the group including PA6, PA66, PA6 / 66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one
polyamine-
polyamide copolymer that includes the following
monomer units: (α) from 0.5 to 25% by weight, based on the weight of the
polyamine-
polyamide copolymer, of at least one
polyamine having at least 4
nitrogen atoms and having a number-average
molar mass Mn of at least 146 g / mol, and (β) at least one polyamide-forming
monomer selected from the group including
lactam, ω-aminocarboxylic acid, equimolar combination of
diamine and
dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and wherein, in the layer I, a total of the parts by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include
monomer units selected from the group including
caprolactam, combination of
hexamethylenediamine /
adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including ω-aminoundecanoic acid,
laurolactam, combination of
hexamethylenediamine / 1,12-
dodecanedioic acid, combination of 1,10-decanediamine / 1,12-
dodecanedioic acid, combination of 1,12-dodecanediamine / 1,12-
dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one
ethylene-
vinyl alcohol copolymer.