Composite having two or more layers, including an EVOH layer

A molding composition, comprising the following components:

• (a) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA6, PA66, PA6/66 and mixtures thereof;
• (b) from 0.5 to 100 parts by weight of at least one polyamine-polyamide copolymer comprising 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 consisting of lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof;
• and
• (c) from ≧0 to 80 parts by weight of PA612,
• wherein, 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 said entirety comprise monomer units selected from the group consisting of 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 said entirety comprise monomer units selected from the group consisting of co-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.

A molding composition, comprising the following components:

• (a) from 0 to 80 parts by weight of at least one polyamide selected from the group consisting of PA6, PA66, PA6/66 and mixtures thereof,
• (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer comprising the following monomer units:
• (α) from 0.5 to 25% by weight, based on the polyamine-polyamide copolymer, of a 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 consisting of lactam, ω-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof, and
• (c) from ≧0 to 80 parts by weight of PA612;
• wherein 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 said entirety comprise monomer units selected from the group consisting of caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof;
• wherein within an entirety of (b) and (c), at least 20 parts by weight of said entirety comprise monomer units selected from the group consisting of 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
• wherein said molding composition comprises at least one block copolymer comprising (a) and (c) monomer units.