The present invention relates to a polyamide copolymer produced from a carboxy-piperidine, preferably 4-piperidinecarboxylic acid and an aminoacid or lactam, preferably 4-aminomethyl-benzoic acid, to a process for its manufacture and to the use thereof for the manufacture of thermoplastic composites, and articles manufactured via injection molding, extrusion and through additive manufacturing technologies.