Patent ID: 8277928

Claim:
A device having a hydrophilic polymeric coating having a thickness of 20 nm or less, the coating comprising a plurality of hydrophilic polymers covalently bonded via pendent photo-reactive groups; wherein the pendent photo-reactive groups have been reacted to form the hydrophilic polymeric coating; and wherein the coating is formed by a process comprising contacting a substrate with a coating composition comprising a hydrophilic polymer comprising at least one pendent latent photoreactive group, wherein the photoreactive group comprises an aryl ketone selected from the group consisting of acetophenone, benzophenone, anthraquinone, anthrone, and substituted derivatives thereof, and while the coating composition is in contact with the substrate, irradiating the composition to activate the pendent latent photoreactive groups to form the hydrophilic polymeric coating.