| 摘要 |
Composition for preparing water-repellent coatings on optical substrates, comprising a porous, electrically conductive molding and an organosilicon compound, obtainable by mixing an electrically conductive or semiconductive support material with a binder and subjecting the mixture to compression molding to form a compression molding, sintering the compression molding at preferably 1100 to 1500° C. in air to form a porous molding, impregnating the molding with the organosilicon compound, and ageing the impregnated molding by storage in air for at least 3 days.
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