초록 ▼

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,

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.

대표청구항 ▼

A lead-free corrosion inhibiting zinc silicate based pigment obtained by melting together the composition consisting essentially of (a) between about 35 and 65 weight percent of ZnO, (b) between about 15 and 35 weight percent of SiO2, (c) between about 5 and 20 weight percent of B2O3, and (d) betwee

A lead-free corrosion inhibiting zinc silicate based pigment obtained by melting together the composition consisting essentially of (a) between about 35 and 65 weight percent of ZnO, (b) between about 15 and 35 weight percent of SiO2, (c) between about 5 and 20 weight percent of B2O3, and (d) between about 1 and 20 weight percent of an oxide selected from the group consisting of WO3, MoO3, SnO2 and combinations thereof.