Method for coloring ceramics via colloidal dispersion

In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution tha...

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Bibliographic Details
Main Authors Jimenez, Frank A, Carden, Robin A, Valenti, Thomas C
Format Patent
LanguageEnglish
Published 12.02.2019
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
HUMAN NECESSITIES
HYGIENE
LIME, MAGNESIA
MEDICAL OR VETERINARY SCIENCE
METALLURGY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:In a method of coloring a ceramic material, a coloring solution consisting of metallic salts is introduced to a ceramic slurry. In a slip casting process, a coloring solution consisting of metallic salts is introduced to a ceramic slurry which is cast into green state bodies. A coloring solution that may comprise for example a metallic salt, a solvent, an organic solvent such as derivatives of propylene oxides, and an acid can be introduced to the slip casting process. Such a coloring solution can be added to the slip casting process. In a method, the coloring solution is thoroughly mixed with the ceramic slurry, after which a ceramic body is cast, dried and finally subjected to a sintering process. After final sinter, the resulting ceramic body possesses an innate color that is homogenous throughout its composition. The method is especially useful for coloring zirconia ceramic material used for making dental restorations.
Bibliography:Application Number: US201615336043