Substrates with a self-cleaning surface, a process for their production and their use

US6800354B2 · kind B2 · utility

Assignee

• Ferro Corporation · US

Inventors

• Martin Baumann · Hartenstein, DE
• Klaus-Dieter Fritsche · Leisnig, DE
• Dagmar Korbelarz · Hanau, DE
• Stephan Ludwig · Kohlenbissen, DE
• Lutz Poth · Roßdorf, DE

Key dates

• Filing date: Dec 12, 2001
• Grant date: Oct 5, 2004
• Expiry date: Dec 12, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31667
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A substrate of glass, ceramic, plastic and metal, or a glazed or enamelled substrate, with a self-cleaning and/or hydrophobic surface. The substrate having disposed thereon a coating that includes a plurality of particles affixed to the surface of the substrate by a binder. The particles are preferably of nanoscale size and extend outwardly from a surface of the coating to form a nano-rough surface. The nano-rough surface causes a hydrophobic or water repellent effect. The binder can be formed from an organic or an inorganic material and operates to fix the plurality of particles to substrate surface.