Coating compositions for producing transparent super-hydrophobic surfaces

1 . A transparent hydrophobic coating composition comprising:

a) at least one R 1 group containing a component comprising an alkyl, aryl groups bonded directly to an Si atom of the silsesquioxanes structure, said alkyl groups are preferably with carbon atom C 1 to C 20 ;

R 2 groups containing a component comprising a substituted alkyl group; and

a substituted group comprising an adhesion promoter; and

a substitute group comprising a cross linking group;

b) a solvent: and

c) an adhesive promoter.

2 . The transparent hydrophobic coating composition of claim 1 , said alkyl groups including an additional moiety bonded there to selected from the group consisting of a hydroxyl group, a CF 3 , and a perfluoro group.

3 . The transparent hydrophobic coating composition of claim 1 , wherein said aryl group substitutes phenyl and benzyl groups.

4 . The transparent hydrophobic coating composition of claim 1 , wherein said cross linking group is selected from the group consisting of a hydroxyl, an amino, and an epoxy group.

5 . The transparent hydrophobic coating composition of claim 1 , wherein said polysiloxane comprises a polysilsesquioxane having repeating units of the formula.

6 . A hydrophobic self-cleaning coating composition for forming a dirt repellant film on a clear, translucent, or painted metal, glass, or polymer substrate, comprising an effective amount of nanoparticles of a treated fumed silica in an acetone in solution imparting a degree of hydrophobicity to a coated surface providing a wetting surface having a contact angle of at least 165 degrees as compared to water having a contact angle of from 80 to 90 degrees on a noncoated surface and said composition imparting a degree of hydrophobicity to a coated surface providing a wetting surface having a tilt angle of sliding of less than 2 degrees as compared to water having a tilt angle of sliding of 90 degrees on a noncoated surface;

said transparent hydrophobic coating composition comprising:

a) at least one R 1 group containing a component comprising an alkyl, aryl groups bonded directly to an Si atom of the silsesquioxanes structure, said alkyl groups are preferably with carbon atom C 1 to C 20 ;

R 2 groups containing a component comprising a substituted alkyl group; and

a substituted group comprising an adhesion promoter; and

a substitute group comprising a cross linking group;

b) a solvent: and

c) An adhesive promoter.

7 . The composition of claim 1 , wherein said composition is clear upon application to a treated surface.

8 . The composition of claim 1 , wherein said composition is translucent upon application to a treated surface.

9 . The composition of claim 1 , including an aerosol.

10 . The composition of claim 9 , wherein said composition is dispersed in an aerosol propellant containing a solvent selected from the group consisting of an alcohol, a hydrocarbon, mineral spirits, and water.

11 . The composition of claim 10 , wherein said aerosol propellant is selected from the group consisting of a carbon dioxide, a hydrocarbon, a fluorocarbon, and compressed air.

12 . The composition of claim 11 wherein said hydrocarbon, comprises a propane/isobutane.

13 . The composition of claim 1 , including a binding agent applied to said substrate, prior to application of said hydrophobic self-cleaning coating composition.

14 . The composition of claim 13 , wherein said binding agent comprises a binding agent pretreatment solution containing a zinc oxide.

15 . The composition of claim 14 , wherein said binding agent comprises about 0.05% by weight of said binding agent pretreatment solution.

16 . The composition of claim 1 , wherein said nanoparticles are from about 7 to about 600 nanometers.