METHOD FOR PREPARING CALCIUM PHOSPHATE-BASE CERAMIC MATERIAL Russian patent published in 2008 - IPC A61L27/32 

FIELD: medicinal materials, chemical technology.

SUBSTANCE: method for preparing calcium phosphate-base ceramic materials involves interaction of calcium soluble salts and soluble phosphates, separation of deposit, molding articles and their roasting at temperature 1000-1300°C. A deposit of the specific surface value 30-60 m² is subjected for treatment at temperature 50-60°C with aqueous or alcoholic solution containing ions chosen from the following order: Na¹⁺ ₄, NO^1- ₃, Ca²⁺, Cl^1-, Na¹⁺, OH^1-, HCO^1- ₃, K¹⁺, Mg²⁺, Al³⁺, Zn²⁺, F^1-, CH₃COO^1-, CO^2- ₃, SO^2- ₄, PO^3- ₄, HPO^2- ₄ and SiO^4- ₄ in the total concentration of ions in solution 1.6-4.6 M and in the volume ratio "solid phase/liquid" = (1-100):(1-25). Method involves stirring for 30-40 min, or a deposit is subjected for treatment with a solution containing ions taken from the following group: Ca²⁺, NH¹⁺ ₄, NO^1- ₃, Cl^1-, HPO^2- ₄, Na¹⁺, OH^1-. Method provides controlling the material thickening process and ceramics microstructure that allows approaching its chemical composition and crystalline structure to natural bone. Invention can be used in medicine in making osseous implants.

EFFECT: improved preparing method, improved and valuable properties of materials.

2 tbl, 4 dwg, 2 ex