ULTRA-THIN HYDROPHOBIC AND OLEOPHOBIC LAYER, METHOD OF MANUFACTURE AND USE IN WATCHMAKING AS AN EPILAME AND IN MECHANICAL ENGINEERING AS A BARRIER FILM

摘要

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 whichA 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, and B represents an unsubstituted C₁-C₂₀ linear aliphatic alkyl group, or a C₁-C₂₀ linear aliphatic alkyl group partially or completely substituted with F,and a method of preparing this layer and its use as an epilame or barrier film.