PRODUCTION METHOD FOR BASIC ZINC CYANURATE POWDER AND PRODUCTION METHOD FOR RUST-PREVENTIVE PIGMENT COMPOSITION

摘要

A production method for a basic zinc cyanurate powder, less than 1 mass% of which remains in a sieve that has 1000 μm openings, the production method being characterized in that a mixed powder that comprises zinc oxide, cyanuric acid, and water, the mole ratio of zinc oxide to cyanuric acid in the mixed powder being 2-3 and the water content of the mixed powder being 9-18 mass%, is heat treated in a range of 30-300 °C while enclosed or unenclosed.