Composition comprising at least one recycled polyamide of formula xy or a/xy

A composition comprising at least:

• (a) from 30% to 99.9% by weight of at least one recycled polyamide exhibiting functions resulting from oxidation reactions chosen from benzamide functions, nitriles, primary amides, chain-end methyl groups, alkenes, formamides, imides, carboxylic acids and their mixtures in a molar ratio, with respect to the secondary amide functions, which is greater than that of the same virgin polyamide,
• with said polyamide being a polyamide of formula XY or A/XY in which:
• A is an aliphatic repeat unit chosen from a unit obtained from the polycondensation of at least one amino acid, a unit obtained from the polycondensation of at least one lactam and a unit obtained from the polycondensation of at least one aliphatic diamine and of at least one aliphatic diacid,
• X is at least one aliphatic or cycloaliphatic diamine, or one arylaliphatic or aromatic diamine, or a mixture of these, and
• Y is at least one dicarboxylic acid, said diacid being chosen from a linear or branched aliphatic diacid, a cycloaliphatic diacid and an aromatic diacid, or a mixture of these, said diamine and said diacid comprising from 4 to 48 carbon atoms, advantageously from 6 to 18 carbon atoms,
• with at least one of X and/or Y being cycloaliphatic, arylaliphatic or aromatic,
• (b) from 0.1% to 10% by weight of at least one additive,
• (c) from 0% to 70% by weight of at least one virgin polyamide,
• (d) from 0% to 65% by weight of at least one filler,
• (e) from 0% to 15% by weight of at least one plasticizer,
• (f) from 0% to 30% by weight of at least one impact modifier.