Patent classifications
C04B2111/82
RED PAINT FOR CERAMIC DECORATION
The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.
PROCESS FOR THE PREPARATION OF A STERILIZED CERAMIC BODY COMPRISING OR ESSENTIALLY CONSISTING OF STABILIZED ZIRCONIA OF A DEFINED COLOUR
A process for the preparation of a sterilized ceramic body including or essentially consisting of stabilized zirconia of a defined colour, including the steps of: providing a ceramic primary body including or essentially consisting of stabilized zirconia of a first colour A, and sterilizing the primary body using radiation sterilization whereby the primary body undergoes a colour change to a colour B. The process includes the further step of irradiating the sterilized primary body with electromagnetic radiation of at least one wavelength lying in the wavelength band ranging from 150 nm to 700 nm to induce an at least partial reversal of the colour change to obtain a colour C of the sterilized ceramic body, the colour C complying with the following requirements in the CIELAB colour space: L* being from 54 to 95, a* being from 15 to 15 and b* being from 15 to 15.
ZIRCONIA MILL BLANK HAVING deltaCtotal OF ZIRCONIA 5.0 OR LESS AND PREPARING METHOD THEREOF
To provide a preparing method of a zirconia mill blank for dental cutting and machining having any one or more of translucency gradation, color gradation and strength gradation after perfect sintering by impregnating a zirconia calcined body with a plurality of impregnating solutions, which can suppress deterioration of the fitting property of a dental prosthesis device prepared from the zirconia mill blank for dental cutting and machining and a zirconia mill blank for dental cutting and machining having any one or more of translucency gradation, color gradation and strength gradation after perfect sintering and suppressing deterioration of the fitting property of a dental prosthesis device prepared from the zirconia mill blank for dental cutting and machining.
To porovide a zirconia mill blank for dental cutting and machining of the present invention is a preparing method of a zirconia mill blank for dental cutting and machining having any one or more of translucency gradation, color gradation and strength gradation after perfect sintering, comprising a step of impregnating a zirconia calcined body with at least two types of impregnating solutions, wherein at least one of the impregnating liquids contains a zirconium component, and in a case in which the total of metal ion concentrations (mass %) contained in each impregnating liquid is defined as C.sub.total, the difference ?C.sub.total which is a difference between C.sub.total of each impregnating liquid is 5.0 or less.
Kit of parts and process for fast firing a porous zirconia article in combination with a surface treating agent containing a glass powder
The invention relates to a process of producing a dental zirconia restoration, the dental zirconia restoration having an outer and an inner surface, the process comprising the step of firing a porous dental zirconia restoration and a glass until the porous dental zirconia restoration is sintered, the glass being located during the firing step on at least a portion of the outer surface of the porous dental zirconia restoration, wherein the zirconia material of the porous dental zirconia restoration and the glass are selected such that during the firing step the glass infiltrates the pores of the porous dental zirconia restoration to an extent of not more than 5 ?m in depth. The invention also relates to a sintered dental zirconia restoration obtainable by such a process and a kit of parts comprising a porous dental zirconia mill blank and a surface treating agent containing a glass for use in such a process.
ZIRCONIA MILL BLANK HAVING MAXIMUM VALUE OF deltaSP(m) OF STABILIZER CONCENTRATION LESS THAN 0.5
To provide a zirconia mill blank for dental cutting and machining that can impart translucency gradation and color gradation similar to a natural tooth to a zirconia perfect sintered body without the need for special equipment.
To provide a zirconia mill blank for dental cutting and machining comprising two opposing surfaces and a side surface between the two opposing surfaces, wherein the side surface has a rectangular shape in a side view of the zirconia mill blank for dental cutting and machining, and in a case in which one of the two opposing surfaces is defined as surface A, the other surface of the two opposing surfaces is defined as surface B, a surface which is parallel to the surface A and is located at a position of 1.0 mm to 1.5 mm from the surface A toward the surface B in a direction parallel to the side surface is defined as surface C, points which are set to having 0.5 mm of distance on the straight line in the direction parallel to the side surface from the surface C toward the surface B in the area from the surface C to the surface B are defined as point P(1), point P(2), to point P(n) in the order from the surface C, a stabilizer concentration (mol %) at each point is defined as SP(1), SP(2), to SP(n) (n?((shortest distance (mm) between the surface C and the surface B)?2)/0.5), the maximum value of the stabilizer concentration (mol %) is defined as SPmax, the minimum value of the stabilizer concentration (mol %) is defined as SPmin, and the maximum value of ASP(m) defined by the following formula is defined as ?SPmax, the zirconia mill blank for dental cutting and machining has a portion where the value of SPmax?Spmin which is a difference between the SPmax and the SPmin is 0.3 or more, and the ?SPmax is less than 0.5.
COLOURED LUMINESCENT PIGMENT, METHOD FOR THE PRODUCTION THEREOF AND USES OF SAME
Disclosed is a colored luminescent composite pigment including an association of at least one luminescent pigment having an average particle size of between 50 and 2000 m and at least one coloring agent. Also disclosed are compositions and materials including the pigment, to the method for the production thereof and to the use of same for coloring materials, particularly of a hydraulic binder composition.
Colouring solution for dental ceramic articles and related methods
The invention relates to a coloring solution for coloring a dental ceramic article, the solution comprising: a solvent and a coloring agent, comprising rare earth element metals or ions being present in the solution in an amount of at least about 0.05 mol/1 solvent and transition metals or ions being present in the solution in an amount of about 0.00001 to about 0.05 mol/1 solvent. The invention also relates to a process for coloring dental ceramic articles, dental ceramic articles treated either with the coloring solution or obtainable by a process comprising the step of firing the dental ceramic articles.
Engineered Stone and Manufacturing Method Thereof
An engineered stone includes a light transmitting mother material (I) and a phosphorescent chip (II). The light transmitting mother material (I) includes about 7 wt % to about 12 wt % of an unsaturated polyester resin (A) and about 88 wt % to about 93 wt % of a silica-containing compound (B) based on a total amount of the unsaturated polyester resin (A) and the silica-containing compound (B) of the light transmitting mother material (I), and further includes about 0.01 part by weight to about 1 part by weight of an organic/inorganic pigment (C) based on about 100 parts by weight of the unsaturated polyester resin (A). The phosphorescent chip (II) includes about 8 wt % to about 15 wt % of an unsaturated polyester resin (A), about 85 wt % to about 92 wt % of a silica-containing compound (B) based on a total amount of the unsaturated polyester resin (A) and the silica-containing compound (B) of the phosphorescent chip (II), and further includes about 2 parts by weight to about 10 parts by weight of a phosphorescent pigment (D) based on about 100 parts by weight of the unsaturated polyester resin (A). The silica-containing compound (B) includes about 20 wt % to about 30 wt % of a silica powder (b1) based on a total amount of the phosphorescent chip (II).
Method For Producing An Implant Blank
A method for producing an implant blank (100), in particular a dental implant blank from a starting body, said implant blank (100) comprising at least one first area, which is a surface area (102), and a second area, which is a core area (101), wherein the surface area (102) has at least one bioactive surface material (502) and extends from at least one first surface (103) in the direction of the core area (101), and the core area (101) has at least one carrier material that can be subjected to mechanical load. The starting body has a porosity for controlling a targeted distribution of the bioactive surface material (502) within the starting body and is loaded with a solution (500) of the bioactive surface material (502) in a first step, which is a loading step. In a second step, which is a distribution control step, the distribution of the bioactive surface material (502) within the starting body is controlled such that the solution (500) has a higher concentration within the surface area (102) than within the core area (101), the control being effected by regulating one or more environmental parameters in a closed environment (200), in particular by regulating the humidity and/or the pressure and/or the temperature.
METHOD FOR MAKING BZ HIGH-TEMPERATURE COLORED GLAZE PORCELAIN PLATE PAINTING
A high-temperature color glaze painting pigment includes a color glaze, white toning glaze and colorless toning glaze, wherein the color glaze consists of 50 wt % to 66 wt % high temperature resistant white glaze mineral and 50 wt % to 34 wt % water, the white toning glaze consists of 70 wt % high temperature resistant white glaze mineral and 30 wt % water, and the colorless toning glaze consists of 30 wt % high temperature resistant colorless glaze mineral and 70 wt % water, wherein the weight ratio of the color glaze to the white toning glaze is 12.5:1 to 50:1, the weight ratio of the color glaze to the colorless toning glaze is 20:1 to 100:1. The high temperature colored glaze painting pigment and a method for making a porcelain plate painting thereof can be not only manually completed by artists with their experiences, but completed by an industrial production way.