METHOD OF OBTAINING POROUS CALCIUM PYROPHOSPHATE Russian patent published in 2015 - IPC C01B25/42 C01B25/32 A61L27/12 

Abstract RU 2537615 C2

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining porous calcium pyrophosphate for application in medicine. Method includes preparation of initial powder mixture, which contains calcium carbonate and ammonium hydrophosphate, moulding of workpieces and their burning. Calcium carbonate and ammonium hydrophosphate are applied with molar ratio, selected from the interval 0.5-0.7, and burning of moulded workpieces is carried out in the interval 800-900°C for 1-3 hours. Calcium carbonate is preferably obtained by method of chemical depositing from water solutions of calcium acetate and ammonium hydrocarbonate with concentration 0.5-2.5 M.

EFFECT: porosity of calcium pyrophosphate, obtained according to the claimed method, constitutes 80-90%.

2 cl, 2 dwg, 1 tbl, 1 ex

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Authors

Safronova Tat'Jana Viktorovna

Putljaev Valerij Ivanovich

Shatalova Tat'Jana Borisovna

Knot'Ko Aleksandr Valer'Evich

Dates

2015-01-10Published

2012-12-14Filed