METHOD FOR PRODUCING HYDROPHOBIC, HEAT-INSULATING MOULDINGS

摘要

Process for hydrophobizing a microporous thermal insulation molding comprising hydrophilic silica, in which the molding is treated with at least one organosilane and in which one or more organosilanes which are gaseous under the reaction conditions are introduced into a chamber containing the microporous thermal insulation molding comprising hydrophilic silica until the pressure difference Δp is ≧20 mbar.

主权项

1. A process for hydrophobizing a molding, the method comprising:
treating the molding with at least one organosilane in a chamber, thereby obtaining a hydrophobized molding, wherein: the molding is a microporous thermal insulation molding comprising hydrophilic silica, and the at least one organosilane is gaseous under said treating and is introduced into the chamber until a pressure difference Δp is ≧20 mbar.