Patent ID: 6296793
Filing Date: 2001-10-02
Classification: C03C,C09K,C23C,G02B

Abstract:
A composition for preparing water-repellent coatings on optical substrates, comprising a porous, electrically conductive molding and an organosilicon compound, obtainable bya) mixing an electrically conductive or semiconductive support material comprising carbon; a conductive metal oxide, carbide, nitride or silicide; a metal powder and a non-conductive material; or a mixture thereof with a binder and subjecting the mixture to compression molding to form a compression molding,b) sintering the compression molding at from 1100 to 1500.degree. C. in air to form a porous molding,c) impregnating the molding with the organosilicon compound, andd) ageing the impregnated molding by storage in air for at least 3 days.