Richard David Demarco

US Patent:

20090239084, Sep 24, 2009

Filed:

Mar 18, 2009

Appl. No.:

12/406576

Inventors:

Joseph Bristow - Goose Creek SC, US
Richard M. DeMarco - Kinnelon NJ, US

International Classification:

B32B 17/06
B05D 3/00

US Classification:

428426, 427331, 427299

Abstract:

Glass surfaces, for example, windshield surfaces, have a durable hydrophobic coating applied thereto. The glass surface is first treated by any suitable method to enhance the ability of a chitosan polymer coating to durably or substantially permanently adhere thereto. Once the chitosan coating has been applied to the glass surface, the normally hydrophilic chitosan coating is rendered hydrophobic by suitable treatment, for example, by a combination of enzymatic and chemical treatments. Alternatively, the chitosan may be rendered hydrophobic prior to coating it on the glass surface, but that is a less preferred technique. The method of the invention provides a glass article having a hydrophobic surface.