Hydrophobic coating comprising a priming including a bis-silane and a hydrophobic layer including a fluorinated alkysilane

2:

• The process as claimed in claim 1, in which X1 and X2 are alkoxy groups or halide groups.

4:

• The process as claimed in claim 1, characterized in that the step of depositing the hydrophobic coating is performed using a solution obtained from a perfluoroalkylsilane of the perfluoropolyethersilane type.

6:

• A hydrophobic coating that may be obtained by performing a process as claimed in claim 1.

7:

• A hydrophobic coating for a glass, ceramic or vitroceramic substrate, characterized in that it comprises:
• a priming layer directly applied onto said substrate and comprising Si—R3—Si groups, wherein R3 is chosen from the group constituted by linear, branched or aromatic alkyl chains in which the number of carbons establishing the bond between the two silicon atoms is less than 6, and
• a coating layer in connection with said priming layer and comprising an alkylsilane having a hydrophobic/oleophobic perfluorinated end group.

9:

• The hydrophobic coating as claimed in claim 7, in which said alkylsilane containing a perfluorinated end group comprises a group of the perfluoropolyether type.

12:

• The hydrophobic coating as claimed in claim 6, in which the thickness of the coating layer is between 1 and 10 nm.

13:

• A product whose outer surface is constituted by a glass, ceramic or vitroceramic material, which is at least partly equipped with a hydrophobic/oleophobic coating as claimed in claim 7.

14:

• The product as claimed in claim 13, consisting of monolithic, laminated or multiple glazing.

15:

• A glazing for a transportation vehicle or for buildings comprising a product as claimed in claim 13.

16:

• A vitroceramic cooking hob or an oven door comprising a product as claimed in claim 13.

17:

• A component of urban furnishing, a furnishing component, a storage tray, a tray for a household electrical appliance, a shower cabin component or a partition wall, or a screen comprising a product as claimed in claim 13.