The invention relates to a discontinuous method for producing aqueous emulsions (E) that comprise an organosilicon compound (A), an emulsifier (B) and water. According to this method, a high-viscositypre-emulsion (V) is produced from the organosilicon compound (A), the emulsifier (B) and water by shearing, and the pre-emulsion (V) is further diluted with water. The inventive method is characterized in that the pressures and temperatures are controlled.