Low emissivity coating with low solar heat gain coefficient, enhanced chemical and mechanical properties and method of making the same

US7901781B2 · kind B2 · utility

Assignee

• AGC FLAT GLASS NORTH AMERICA, INC. · US

Inventors

• Peter Maschwitz · Sebastopol, US
• Keith Grubb · Petaluma, US
• Dominique Coster · Temploux, BE
• Daniel Decroupet · Fosses-la-Ville, BE

Key dates

• Filing date: Nov 23, 2007
• Grant date: Mar 8, 2011
• Expiry date: Nov 23, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31678
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention provides low-emissivity stacks being characterized by a low solar heat gain coefficient (SHGC), enhanced aesthetics, mechanical and chemical durability, and a tolerance for tempering or heat strengthening. The invention moreover provides low-emissivity coatings comprising, in order outward from the substrate a first dielectric layer; a first nucleation layer; a first Ag layer; a first barrier layer; a second dielectric layer; a second nucleation layer; a second Ag layer; a second barrier layer; a third dielectric layer; and optionally, a topcoat layer, and methods for depositing such coatings on substrates.