Fuel line, method for producing same, and uses thereof

A multilayer composite in the form of a hollow body enclosing an inner space, consisting of four layers, an inner layer, a further innermost layer directly adjacent to said inner layer and being conductive and adjoining the multilayer composite to the inside, a middle layer adjoining said inner layer, and an outer layer adjoining said middle layer and adjoining the multilayer composite to the outside,

• wherein the inner layer consists of:
• (A_I) Polyamide 6;
• (B_I) 10-30 weight percent impact modifier
• (C_I) 0.01-0.1 weight percent heat stabilizer, comprising copper(I)
• (D_I) 0.15-10 weight percent additives, selected from the group consisting of conductivity additives, crystallization accelerators, processing aids, lubricants, and mixtures thereof
• where the sum of the components (A_I)-(D_I) add up to 100% by weight of the inner layer,
• the middle layer comprises EVOH, and
• wherein the outer layer consists of:
• (A) 5-35% by weight of polyamide 6;
• (B) 30-60% by weight of at least one of said an other polyamides polyamide selected from the group consisting of:
• polyamide 612 and polyamide 616;
• (C) 20 to 40% by weight of other components different from (A) and (B);
• wherein the sum of components (A)-(C) is 100% by weight of the material used to produce the outer layer, the other components (C) being composed as follows:
• (C1) 3-8 weight percent plasticizer;
• (C2) 9-30 weight percent impact modifier being an ethylene/a-olefin copolymer grafted with an anhydride;
• (C3) 3-10 weight percent adhesion promoter;
• and
• (C4) 0-3% by weight of additives, including processing aids, UV stabilizers, heat stabilizers, pigments, masterbatch carriers or mixtures thereof, where the proportions of (C1)-(C4) are based on the 100 weight percent of the outer layer formed by the sum of (A)-(C).