Patent ID: 8431220

Claim:
A hydrophobic coating comprising: a polymer matrix comprising an elastomeric polymer, wherein the elastomeric polymer comprises a fluoroelastomer, a polyperfluoroether elastomer, a silicone elastomer or a combination thereof; and a plurality of nano-fillers dispersed within the polymer matrix, wherein each nano-filler comprises a core-shell structure of a silica shell over a metal oxide core, the silica shell comprising a hydrophobic moiety, the metal oxide core comprising titanium oxide, and each nano-filler has an average particle diameter from about 1 nm to about 100 nm, and about 70 wt % to about 90 wt % metal oxide core, and wherein the hydrophobic coating comprises the plurality of nano-fillers at about 3% to about 6% by weight of the hydrophobic coating.