Patent ID: 8722143
Filing Date: 2014-05-13
Classification: B05D,Y10T

Abstract:
1. Method for preparing a superhydrophobic surface on a solid substrate comprising the steps of: (a) providing a solvent in the form of a pressurized fluid in a vessel, wherein the fluid exhibits a decrease in solvency power with decreasing pressure; (b) adding a hydrophobic substance to the solvent as a solute, which substance is soluble with the pressurized fluid and has the ability to crystallize after expansion of the fluid, thereby obtaining a solution of the solvent and the solute in the vessel; (c) having at least one orifice opened on the vessel, thereby causing the pressurized solution to flow out of the vessel and vaporize in ambient air or in an expansion chamber having a lower pressure than within the vessel, the solute thereby forming particles; (d) depositing the particles on the substrate in order to obtain a superhydrophobic surface, wherein the distance from the at least one orifice to the substrate is between 1 to 6 centimetres, and wherein the superhydrophobic surface is formed on the solid substrate.