Ultra-thin hydrophobic and oleophobic layer, method of manufacture and use in watchmaking as an epilame

Abstract

The invention relates to a novel ultra-thin hydrophobic and oleophobic layer, formed by self-assembly on a solid substrate surface, of compounds of the general formula A-B in which A represents a group of the formula in which Z represents C or N+, X represents C—H or C-L, L being an electron-attracting group selected from F, Cl, Br, I, CF3, NO2 and N(CH3)3+, Y represents H or CH3, or Y forms a 5- or 6-atom heterocycle with X, T represents NH, CO, CONH or NH2−U−, U− being a soluble anion such as e.g. F−, Cl−, Br−, I, OH−, NO3−, HSO4−, SO42−, CO32−, HCO3− or SCN−, and B represents an unsubstituted C1-C20 linear aliphatic alkyl group, and a method of preparing this layer and its use as an epilame.

Dependencies are inferred from the claim text.