METHOD OF PREPARING OF PHOSPHATE BINDER Russian patent published in 1995 - IPC

FIELD: production of phosphate binder. SUBSTANCE: method involves stirring of magnesium hydroxide-carbonate with phosphoric and hydrochloric acid at heating at their molar ratio [MgCO₃·Mg(OH)₂·H₂O]:H₃PO₄:HCl=1:(1,8-2,2):(2,0-2,4) = 1:(1.8-2.2):(2.0-2.4). Properties of obtained binder: density is 1,38-1,41 g/cm³, viscosity is 0.01-0.04 Pa x s, precrystallization period is above 1 year, compression strength limit is 89.1-102.0 MPa. Binder is used for high-strength heat-resistant compositions with low hardening temperature. EFFECT: improved method of binder preparing. 1 tbl