The present invention relates to a hydroxyapatite-supporting porous silica particle, in which hydroxyapatite is supported on a surface a spherical porous silica particle and inner surfaces of pores of the spherical porous silica particle, and in which the hydroxyapatite-supporting porous silica particle has a circularity of 0.760 or larger, a method for producing the hydroxyapatite-supporting porous silica particles, and a composition containing the hydroxyapatite-supporting porous silica particle.

The subject process relates generally to producing an aqueous solution through a simple but highly effective chemical reaction. The aqueous solution is composed of a blended solution with water and an added solubilizer for the chemical reaction. The results produce an ionic solid and an alkaline liquid solution which are useful commercial products, and various applications including but not limited to use as a CO.sub.2 capture solvent.

For coloring foods, nutritional supplements, cosmetic or pharmaceutical products, the invention provides a dye, which contains at least one pigment in the form of a water-insoluble sulfate, carbonate, or phosphate of at least one alkaline earth metal, which is selected from the group consisting of calcium sulfate, magnesium phosphate, calcium phosphate, and magnesium carbonate.

The present invention relates to a method for producing whitlockite, and whitlockite produced thereby. A method for producing whitlockite according to one embodiment of the present invention comprises: a step of preparing a precursor solution by mixing a first solution containing a calcium (Ca) ion source material, a second solution containing a magnesium (Mg) ion source material, and a third solution containing a phosphate (PO4) source material; a heat-treatment step of heat-treating the precursor solution; and a step of separating and purifying the precipitate formed in the solution, after the heat-treatment step.

The present invention relates to a method for producing whitlockite, and whitlockite produced thereby. A method for producing whitlockite according to one embodiment of the present invention comprises: a step of preparing a precursor solution by mixing a first solution containing a calcium (Ca) ion source material, a second solution containing a magnesium (Mg) ion source material, and a third solution containing a phosphate (PO4) source material; a heat-treatment step of heat-treating the precursor solution; and a step of separating and purifying the precipitate formed in the solution, after the heat-treatment step.

The present invention relates to the use of Ca.sub.5(PO.sub.4).sub.3(OH) (hydroxyapatite; HAP) and a dental care composition comprising Ca.sub.5(PO.sub.4).sub.3(OH) for the deep-layer remineralization of demineralized teeth, in particular for the deep-layer remineralization of demineralized dental enamel. Ca.sub.5(PO.sub.4).sub.3(OH) used according to the invention and the dental care composition used according to the invention can be applied in the treatment and/or prevention of various diseases affecting the teeth, in particular caries.

The present invention relates to the use of Ca.sub.5(PO.sub.4).sub.3(OH) (hydroxyapatite; HAP) and a dental care composition comprising Ca.sub.5(PO.sub.4).sub.3(OH) for the deep-layer remineralization of demineralized teeth, in particular for the deep-layer remineralization of demineralized dental enamel. Ca.sub.5(PO.sub.4).sub.3(OH) used according to the invention and the dental care composition used according to the invention can be applied in the treatment and/or prevention of various diseases affecting the teeth, in particular caries.

The present disclosure describes a lithium solid state battery, including a cathode that includes an active material such as lithium, and an additive having a lower melting point than the active material. The additive can provide a composite cathode where a cathode-electrolyte interphase has high electronic and ionic conductivity, good mechanical deformability, and high oxidation potential.

The present invention addresses the problem of providing a plasma spraying material with which it is possible to form an HAp film that has high hardness and is not susceptible to abrasion, even under conditions involving plasma spraying with low flame energy. In the present invention, an HAp powder having an average particle diameter (D.sub.50) of 15-40 μm and a pore volume of 0.01-0.30 cc/g at a pore diameter of 2000 nm or less as measured through mercury intrusion makes it possible to form an HAp film that has high hardness, is not susceptible to abrasion, and can be subjected to plasma spraying, even under conditions involving plasma spraying with low flame energy.

The present invention addresses the problem of providing a plasma spraying material with which it is possible to form an HAp film that has high hardness and is not susceptible to abrasion, even under conditions involving plasma spraying with low flame energy. In the present invention, an HAp powder having an average particle diameter (D.sub.50) of 15-40 μm and a pore volume of 0.01-0.30 cc/g at a pore diameter of 2000 nm or less as measured through mercury intrusion makes it possible to form an HAp film that has high hardness, is not susceptible to abrasion, and can be subjected to plasma spraying, even under conditions involving plasma spraying with low flame energy.