Article Coated with an Ultra High Hydrophobic Film and Process for Obtaining Same
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorsRichard Muisener, Haipeng Zheng
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Abstract
The present invention relates to an article having at least one surface, wherein said surface is at least partially coated with a ultra high hydrophobic film having a surface roughness such that the film exhibits a static water contact angle at least equal to 115°, preferably 120°, even better 125°, and wherein said film is a nanostructured film comprising a first layer comprising nanoparticles bound by at least one binder adhering to the surface of the article, and a second layer of an anti-fouling top coat at least partially coating said first layer. The present invention also concerns a process for preparing the above article.
Claims5
An article having at least one surface, wherein said surface is at least partially coated with a ultra high hydrophobic film having a surface roughness such that the film exhibits a static water contact angle at least equal to 115° and wherein said film is a nanostructured film comprising:
- a first layer comprising nanoparticles bound by at least one binder adhering to the surface of the article, and
- a second layer of an anti-fouling top coat at least partially coating said first layer.
-30. (canceled)
-44. (canceled)
A liquid coating composition comprising at least one binder and nanoparticles, wherein the binder is present in an amount ranging from 0.5 to 4% by weight, and wherein the nanoparticles are present in an amount ranging from 1 to 15% by weight, relative to the total weight of the composition.
Dependencies are inferred from the claim text.