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Preparation of hydrophobic coatings

United States Patent

February 3, 2009
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
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 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.
Branson; Eric D. (Albuquerque, NM), Shah; Pratik B. (Albuquerque, NM), Singh; Seema (Rio Rancho, NM), Brinker; C. Jeffrey (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
11/ 104,917
April 13, 2005
This invention was made with Government support under Contract No. DE-AC04-94AL85000 awarded by the Department of Energy. The Government has certain rights in the invention.