METHOD FOR PRODUCING HYDROPHOBIC, HEAT-INSULATING MOULDINGS

摘要

The invention relates to a method for hydrophobizing a microporous, heat-insulating moulding comprising hydrophilic silicic acid, in which method the moulding is treated with at least one organosilane, and in which method one or more organosilanes that are vaporous under the reaction conditions are introduced into a chamber that contains the microporous, heat-insulating moulding comprising hydrophilic silicic acid until the pressure difference ismbar.