Colored alkali aluminosilicate glass articles

Abstract

A glass article including at least about 40 mol % SiO2 and, optionally, a colorant imparting a preselected color is disclosed. In general, the glass includes, in mol %, from about 40-70 SiO2, 0-25 Al2O3, 0-10 B2O3; 5-35 Na2O, 0-2.5 K2O, 0-8.5 MgO, 0-2 ZnO, 0-10% P2O5 and 0-1.5 CaO. As a result of ion exchange, the glass includes a compressive stress (σs) at at least one surface and, optionally, a color. In one method, communicating a colored glass with an ion exchange bath imparts σs while in another; communicating imparts σs and a preselected color. In the former, a colorant is part of the glass batch while in the latter; it is part of the bath. In each, the colorant includes one or more metal containing dopants formulated to impart to a preselected color. Examples of one or more metal containing dopants include one or more transition and / or rare earth metals.

Description

[0001]This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application Ser. No. 61 / 565,196 filed on Nov. 30, 2011 the content of which is relied upon and incorporated herein by reference in its entirety.BACKGROUND[0002]1. Field[0003]Aspects of embodiments and / or embodiments of this disclosure generally relate to the field of glass materials technology and more specifically to the field of alkali aluminosilicate glass materials technology. Also, aspects of embodiments and / or embodiments of this disclosure are directed to one or more of: an ion exchangeable colored glass composition that substantially maintains its original color following an ion exchange treatment; an ion exchangeable, colorable glass composition to which a preselected color can be imparted by an ion exchange treatment; an ion exchanged (IOX) colored glass composition; an article or machine or equipment of or including an IOX colored glass composition; and one or more processes for...

AI Technical Summary

Benefits of technology

The patent text describes a method for making colored glass articles that have a compressive stress on their surface and a depth of layer of at least 15 μm. The method involves exchanging ions in the glass with preselected metal containing dopants to impart a preselected color. The resulting glass has a unique color and is stable over time. The method can involve using specific salts or formulations of salts to strengthen the glass. The technical effects of this patent include the ability to make colored glass articles that have a stable color and a compressive stress on their surface, as well as the ability to make such articles with preselected colors and depth of layer.

Problems solved by technology

However, new potential applications relating to product color(s) and / or aesthetics as not addressed by clear alkali aluminosilicate glasses.

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