Patent ID: 6869999

Claim:
A process for the preparation of granules from a thermoplastic polyurethane which is the reaction product of A) a cycloaliphatic diisocyanate with B) at least one polyol having a number-average molecular weight between 600 and 8,000 g/mol and C) at least one chain-lengthening agent having a number-average molecular weight between 60 and 500 g/mol with the addition of D) optionally, a catalyst and E) optionally, a conventional auxiliary substance and/or additive, comprising (1) applying in succession (a) at least one wetting agent which is liquid at ≦30° C. in a concentration of 0.01 to 0.5 wt. %, based on the sum of the weights of A, B and C, and thereafter (b) at least one solid powdering agent with a melting temperature of ≧70° C. in a concentration of 0.01 to 0.5 wt. %, based on the sum of the weights of A, B and C to the thermoplastic polyurethane before and/or after (2) comminuting the thermoplastic polyurethane.