SUPERHYDROPHOBIC COATINGS AND METHODS FOR THEIR PREPARATION
First Claim
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1. A method of preparing a coating, comprising:
- a) contacting under mild conditions a silica-containing colloid with two or more silanes to prepare a first colloid mixture,b) contacting under mild conditions said first colloid mixture with an acid, wherein a superhydrophobic coating is prepared.
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Abstract
Superhydrophobic coatings and compositions and methods for preparing superhydrophobic coatings and compositions are described herein whereby the coatings and compositions are prepared under mild conditions, yet the methods are amenable to chemical functionalization of the coatings and components therein. The methods are useful for tuning and optimizing the physical properties of the coatings. In an embodiment, the coatings comprise nanostructured fluorinated silica colloids.
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Citations
48 Claims
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1. A method of preparing a coating, comprising:
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a) contacting under mild conditions a silica-containing colloid with two or more silanes to prepare a first colloid mixture, b) contacting under mild conditions said first colloid mixture with an acid, wherein a superhydrophobic coating is prepared. - View Dependent Claims (5, 8, 9, 10, 22, 25, 28, 32, 35, 36, 47, 48)
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2-4. -4. (canceled)
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6-7. -7. (canceled)
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11-21. -21. (canceled)
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23-24. -24. (canceled)
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26-27. -27. (canceled)
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29-31. -31. (canceled)
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33-34. -34. (canceled)
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37-40. -40. (canceled)
- 41. A coating composition comprising, nanostructured fluorinated silica colloids, and a fluoroalkoxysilane covalently linked to at least one additional silane.
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46. A method of coating a substrate comprising:
contacting said substrate by spray coating a composition comprising, nanostructured fluorinated silica colloids, and a fluoroalkoxysilane covalently linked to at least one additional silane to prepare a coated substrate.
Specification