Corrosion inhibiting pigments

Details Corrosion inhibiting pigments Corrosion inhibiting pigments

C - Chemistry, Metallurgy

09

C

31/43

C09C 1/28 (2006.01)

Patent

CA 1299854

ABSTRACT OF THE DISCLOSURE Corrosion inhibiting pigments on the basis of zinc silicate are produced from 35-65% by weight of ZnO, 15-35% by weight of SiO2, 5-20% by weight of B2O3, and 1-20% by weight of WO3 which can be entirely or partly substituted by, MoO3 and/or SnO2 wherein the amount of zinc silicate, boron oxide and, if necessary, the other metal oxides or their hydrates singly or in a combination thereof is such that the entire combination with the zinc silicate and the boron oxide contains at least one of the oxides WO3, MoO3 and/or SnO2 in amounts bringing the balance to 100%. The pigments can be manufactured by dry mixing of the components, melting for 1-3 hours at 1100°C-1400°C and subsequent grinding to desired fineness.

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