Coloring solution for zirconia ceramics

US10292795B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Andreas Herrmann · Steinebach, DE
• Michael Jahns · Gilching, DE

Key dates

• Filing date: Sep 12, 2013
• Grant date: May 21, 2019
• Expiry date: Feb 19, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24926
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Kits of parts comprising a coloring solution, a porous zirconia article, optionally application equipment, the solution comprising cation(s) of coloring agent(s) in an amount above about 0.05 mol/l, solvent(s) for the ion(s), optionally complexing agent(s), optionally thickening agent(s), optionally organic marker substance(s), optionally additive(s), the porous zirconia article showing a N2 adsorption and desorption of isotherm type IV according to IUPAC classification. Methods for coloring a zirconia article comprising the steps of providing a porous zirconia article and a coloring solution, applying the coloring solution to at least a part of the outer surface of the porous zirconia article, optionally drying the porous zirconia article of the preceding step, sintering the porous zirconia article to obtain a colored zirconia ceramic article.