Recycling method for producing a polyamide compound

A method for manufacturing a polyamide B comprising melt-mixing a polyamide A and a salt C of a diacid and a diamine,

• wherein the polyamide B has a lower viscosity number, measured according to EN ISO 307:
• 2019 in sulfuric acid, than the polyamide A, and
• wherein the ratio of the ratio of the concentration of amino end groups of polyamide B to the concentration of amino end groups of polyamide A, measured by means of a potentiometric titration of polyamide-methanol phenol solution with aqueous hydrochloric acid, to the ratio of the concentration of carboxyl end groups of polyamide B to the concentration of carboxyl end groups of polyamide A, measured by means of a titration of a polyamide benzyl alcohol solution with alcoholic potassium hydroxide solution, in polyamide B is 0.8 to 1.2.

A polyamide B1 constructed from

• a) 99.00 to 99.99% by weight of polyamide B* formed from units selected from one or more diamines in combination with one or more diacids, one or more lactams and mixtures thereof, and
• b) 0.01 to 1% by weight of units derived from a diacid and a diamine forming a salt C, wherein the units derived from the diacid and the diamine forming the salt C are different from the units forming the polyamide B*.