Method for the production of polymer powders

process for the preparation of polymer powders by evaporation of the volatile Constituents from aqueous Dispersions of film-forming polymers P, wherein the aqueous polymer dispersion before evaporation of the volatile Constituents still comprises drying assistants T, which in a Amount of 0.1 to 80 wt .-%, based on the polymer P of the dispersion, are present, and being used as drying assistant T Polyvinylformamide becomes. The Polyvinylformamide used preferably has a K value (kW), determined in accordance with Fikentscher in accordance with DIN 53726, of 5 to 50 at.