Preparation of hydrophobic coatings

Details Preparation of hydrophobic coatings Preparation of hydrophobic coatings

2005-04-13

2009-02-03

Cameron, Erma (Department: 1792)

Coating processes

With post-treatment of coating or coating material

Solvent vapor treatment of coating

C427S553000, C427S230000, C427S337000, C427S340000

Reexamination Certificate

active

07485343

ABSTRACT:
A method for preparing a hydrophobic coating by preparing a precursor sol comprising a metal alkoxide, a solvent, a basic catalyst, a fluoroalkyl compound and water, depositing the precursor sol as a film onto a surface, such as a substrate or a pipe, heating, the film and exposing the film to a hydrophobic silane compound to form a hydrophobic coating with a contact angle greater than approximately 150°. The contact angle of the film can be controlled by exposure to ultraviolet radiation to reduce the contact angle and subsequent exposure to a hydrophobic silane compound to increase the contact angle.

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