Glass ceramic or glass element that can be subjected to great thermal loads and is decorated with a metallic color

US7611774B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Monica Cotlear De Witzmann · Nieder-Olm, DE
• Dietmar Wennemann · Albig, DE
• Angelina Milanovska · Mainz, DE
• Ella Ruhl · Bad Kreuznach, DE
• Eva Lauterbach · Seibersbach, DE
• Ioannis Kosmas · Stadecken-Elsheim, DE

Key dates

• Filing date: May 3, 2005
• Grant date: Nov 3, 2009
• Expiry date: Mar 26, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The glass ceramic or glass element that can be subjected to high thermal loads is decorated with a metallic colorant. The metallic colorant consists of a melted silicate and at least one effect pigment, which is included in a specified proportion in a melt of the silicate glass to form the metallic colorant. The at least one effect pigment is in the form of platelets of synthetic aluminum oxide (Al2O3) coated with at least one metal oxide. Preferably the at least one effect pigment is a XIRALLIC® high chroma sparkle pigment supplied commercially by Merck and the metallic colorant has a pigment content of from 1 to 30 wt. %.