PIGMENT ANTI-CORROSION A BASE D'OXYDE DE FER, SA PREPARATION ET SON UTILISATION POUR LA PREPARATION DES VERNIS ET LAQUES

摘要

A pigment of high anti-corrosion properties comprises (A) ABOUT 30 TO 70 MOLE PERCENT OF AT LEAST ONE OF MgO, ZnO and CaO, and (B) ABOUT 70 TO 30 MOLE PERCENT OF Me2O3 wherein Me2O3 has the approximate molar percent composition Fe2O3: 0-100, preferably 0.5-100, most preferably 1-95, mole % Al2O3+Mn2O3: 0-100, preferably 0.5-100, most preferably 1-95, mole % Cr2O3: 0-20 mole % IS PRODUCED BY CALCINING SUCH OXIDES OR COMPOUNDS YIELDING SUCH OXIDES AT FROM ABOUT 200 DEG TM TO 650 DEG C. with the option of going up to about 950 DEG C. if the Al+Mn+Cr oxides total 10 mole % or more.