Multi-layer composite comprising an EVOH layer and a protective layer

A multilayer composite comprising the following layers:

• I. an interior layer I selected from the group consisting of a fluoropolymer molding composition and a polyolefin molding composition;
• II. a bonding agent layer II that has the following composition:
• a) from 0 to 80 parts by weight of a graft copolymer prepared using the following monomers:
• from 0.5 to 25% by weight, based on the graft copolymer, of a polyamine having at least 4 nitrogen atoms and
• polyamide-forming monomers selected from the group consisting of lactams, ω-aminocarboxylic acids and equimolar combinations of diamine and dicarboxylic acid;
• b) from 0 to 100 parts by weight of polyamide, and
• c) from 0 to 75 parts by weight of a polymer selected from the group consisting of fluoropolymers and polyolefins,
• with the sum of the parts by weight of a), b) and c) being 100,
• and, in addition,
• the sum of the components a) and b) comprising at least 20 parts by weight of monomer units based on 100 parts by weight of a), b) and c), derived from caprolactam and/or the combination hexamethylenediamine/adipic acid, hexamethylenediamine/suberic acid, hexamethylenediamine/sebacic acid, hexamethylenediamine/dodecanedioic acid, hexamethylenediamine/isophthalic acid or hexamethylenediamine/terephthalic acid and
• d) not more than 50 parts by weight of additives selected from the group consisting of impact-modifying rubber and auxiliaries and additives;
• and
• III. a layer III comprising an EVOH molding composition,
• wherein layer II is between layer I and layer III.