METHOD OF PRODUCING POROUS GLASS-CERAMIC MATERIAL Russian patent published in 2012 - IPC A61L27/10 A61F2/28 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing porous bioactive glass-ceramic material. Said method involves preparing a semidry mass containing powdered calcium phosphate glass and 1-10% solution of a polymer selected from polyvinyl alcohol, gelatine, methyl cellulose or carboxymethyl cellulose, which is then moulded in paper masters at moulding pressure 1.0-1.2 MPa, dried, burnt and held for 0.5-1.5 hours at 900-1000°C. Main channel foaming agents in form of caprone, nylon, lavsan or graphite in amount of 3-30 wt % and starch in amount of 1-10 wt % are then added to the semidry mass. The calcium phosphate glass has the following composition in mol %: CaO - 40-55, Al₂O₃ - 4-10, B₂O₃ - 1-5, TiO₂ - 1-10, ZrO₂ - 1-10 and P₂O₅ - the balance.

EFFECT: method enables to obtain bioactive glass-ceramic materials for implantation with a channel and an inter-channel pore structure with open porosity of 20-70%, content of pore channels of 5-40%, channel pore diameter of 100-700 mcm, pore size in inter-channel partitions of 20-100 mcm.

2 cl, 8 ex