A process for producing thermoplastic, non-tacky polyurethanes

A process for the preparation of granules from thermoplastic polyurethanes obtainable by reaction of A) cycloaliphatic diisocyanates with B) at least one polyol having a number average molecular weight between 600 to 8000 g / mol, C) at least one chain extender having a number average molecular weight between 60 and 500 g / mol, wherein the equivalent ratio of NCO groups to the sum of NCO-reactive groups of 0.9: 1.0 to 1.1: 1.0, with the addition of D) optionally catalysts and E) optionally usual auxiliaries and additives, characterized in that before and / or after the comminution of the thermoplastic polyurethanes (TPU), in succession a) one or more at ≤ 30 ° C liquid wetting agent in a concentration of 0.01 to 0.5 wt .-%, based on the sum be applied from a, B and C to the TPU and thereafter b) one or more solid powdering agents with a melting temperature of ≥ 70 ° C in a concentration of 0.01 to 0.5 wt .-% to, based on ...