Patent ID: 7781064

Claim:
A substrate coated with a coating formed by a process comprising the steps of: (a) providing micro or nano-particles prepared from a wet synthesis; (b) treating the particles with a hydrophobic agent and an additive ex-situ in an arbitrary order or in-situ and simultaneously in one container to form a coating material comprising a microstructure with the hydrophobic agent and the additive bonded thereto, wherein the particles are treated with the additive at a pH of about 9-13 and the additive promotes aggregation of the particles prepared from the wet synthesis to increase hydrophobicity by providing surface roughness; (c) applying the coating material on a substrate and then curing the coating material to form a substrate coated with a coating having a microstructured, hydrophobic surface, wherein the hydrophobic surface has a water contact angle of at least 130°.