Hydrophobic silica coating

Abstract

An applicator which can readily and conveniently generate an aerosol of hydrophobic silica particles without the need for hoppers, rotating vanes, compressed dry air purged rotors, venturis, or other complex apparatus, and a method of applying a friction enhancing and water repelling coating to a surface using such an applicator. The applicator can readily produce a submicron hydrophobic silica aerosol even from hydrophobic silica particles which normally aggregate into conglomerates of greater than 1.mu. in diameter. The applicator uses an aerosol dispenser with a nozzle communicating with the interior of the container thereof, and a pressurized propellant. The dispenser is charged with a suspension of hydrophobic silica particles in a volatile liquid, for example ethanol. The applicator and method are particularly useful in applying a grip enhancing and water repelling coating to an individual's hands and/or various equipment, such as athletic equipment, prior to participating in sports where improved grip is desirable, such as in football, baseball, golf, etc. Further, high efficiency particulate filters can be readily and conveniently tested using the applicator.

Dependencies are inferred from the claim text.