ABRASIVE MATERIAL AND METHOD OF PREPARING THEREOF Russian patent published in 1999 - IPC

FIELD: chemical industry. SUBSTANCE: sol-gel aluminium oxide based material prepared by inoculation comprises alpha-aluminium oxide crystals of submicrometer size and admixture of oxides of metals selected from alkali, alkaline-earth, transition, rare-earth metals, and alumina, amount of calcium oxide constituting less than 100 mln of fractions and total amount of admixtures constitutes less than 400 mln of fractions. Also described is method of preparing abrasive material. EFFECT: abrasives having improved grinding properties. 16 cl, 5 tbl