A method for the production of a polychromatic and/or spatially polychromatic or a monochrome colored ceramic body, in particular a dentine ceramic blank, which is dyed in this way, wherein in order to control a targeted distribution of color pigments (101, 102) within a porous ceramic (100), in a first step, which is a loading step (3c), the ceramic (100) is loaded with a color pigment solution (104). In a second step, which is a distribution control step (4d), the distribution of the color pigments (101, 102) within the ceramic (100) is controlled by controlling one or more environmental parameters (106) in an environment (108) and/or the pressure and/or temperature.

A system, method and composition for making a dental ceramics block. The system, method, and composition resulting in natural color matching without drying time between color layers. The system, method and composition also resulting in good color preparation on restorations of about 0.001 mm-1.000 mm thickness.

The present invention provides a coloring solution for zirconia, which, when used on zirconia before firing of the zirconia, causes the zirconia to exhibit only a slight color difference before and after the firing and thus enables accurate prediction of the post-firing color tone of the zirconia. The present invention relates to a coloring solution for zirconia, comprising: a coloring agent (A) that is decolorized after firing of zirconia; and a metal ion solution (B), wherein, when zirconia is colored with the coloring solution and then subjected to firing, the color difference of the zirconia before and after the firing satisfies L*5.8, a*2.4, and b*4.3.

The present invention relates to a white or colored cementitious mixture for the manufacture of micro-concrete or normal concrete, mortar or pastes with thermochromatic properties, i.e., changing its color depending on the temperature at which the material is exposed. This color change is reversible after some time of exposure to another level of temperature. This cementitious mixture comprises the following components, in percentage in weight of the components relative to the total weight of the composition: a) 35-80% of white or gray Portland cement; b) 0.1-30% of finely ground limestone filler; c) 0.01-3% of powdered super-plasticizer; d) 0.01-3% of modified polyvinyl resins; e) 0.01-5% of dispersant of vinyl acetate and ethylene copolymers; f) 0.3-15% of encapsulated photochromic copolymers; and also one or more components selected from: g) 1-10% of binding regulator; h) 0.1-4% of zinc stearate; i) 1-20% of metakaolins; j) 5-60% of artificial pozzolans; k) 0.1-15% of inorganic pigments.

Provided is a coloring agent composition to be added to a gypsum-containing raw material powder constituting a gypsum product and to be used for coloring the gypsum product, the coloring agent composition being a powder containing a pigment, calcined gypsum, and amorphous silica. A process for producing the coloring agent composition includes a first step of mixing a pigment, calcined gypsum, and amorphous silica to obtain a mixed powder. Use of the coloring agent composition makes it possible to easily produce gypsum products such as a powder and a hardened body that are excellent in colorability.

A coloring solution for dental zirconia ceramics and a method for using the same are provided. The coloring solution consists of coloring agents, a solvent, and an additive. The coloring agents are a combination of two or more rare earth metal compounds, wherein the rare earth metal compounds having rare earth metal ions selected from the group consisting of praseodymium (Pr) ions, erbium (Er) ions, cerium (Ce) ions, and neodymium (Nd) ions. The concentration of the rare earth metal ions in the solution is 0.053 mol/liter solvent. The molar ratio of Pr ions:Er ions:Ce ions:Nd ions in the solution is 1:(1050):(020):(030).

The present invention relates to fiber cement decking products, which comprise at least one or more pigments and which are at least partly coloured in the mass. The present invention further relates to methods for the production of such fiber cement decking products as well as uses of such fiber cement decking products in the building industry. The present invention further relates to fiber cement formulations and fiber cement materials, which are suitable for the production of fiber cement products for decking applications.

A ceramic body is provided that is suitable for use in dental applications to provide a natural aesthetic appearance. A colorized ceramic body is formed that has at least one color region and a color gradient region. A ceramic body is formed having at least two color regions and a color gradient that forms a transition region between two color regions. A method for making the colorized ceramic body includes unidirectional infiltration of a coloring composition into the ceramic body.

A preparation method includes: pressing and forming a ceramic base material to obtain a green body of a ceramic plate; applying a ground glaze on the surface of the green body to cover the base color and defects of the green body; applying a cover glaze on the surface of the green body after applying the ground glaze, wherein the cover glaze contains 0.2 wt % to 0.7 wt % of coloring metal oxide to make the coloring bright; roller-printing patterns on the surface of the green body after applying the cover glaze to produce a flowing cloud effect; and drying the green body with the roller-printed patterns and firing in a kiln. The present invention uses roller printing to print the patterns of cloud effect on the surface of the cover glaze, which form a sharp contrast with the color of the cover glaze, producing a better visually distinct effect.

A method may produce a ceramic part with a mother-of-pearl effect, in particular for watchmaking. Such methods may include: forming a ceramic body; depositing a layer of an oxy-nitride component of the OxNy type on at least a portion of the ceramic body; and oxidizing at least a portion of the oxy-nitride layer, preferably by heating.