AN OPTICALLY VARIABLE PIGMENT FOR CREATION OF TWO DISTINCT COLOURS (VARIANTS), A METHOD FOR PREPARATION THEREOF (VARIANTS), COATING COMPOSITION CONTAINING PIGMENT, A METHOD FOR PREPARATION THEREOF, A METHOD FOR PRODUCING OF OPTICALLY VARIABLE SIGN AND COATED BY COMPOSITION SUBSTRATE

摘要

The invention relates to optically variable pigments (10) having a colour shift between two distinct colours of any of the known designs. The pigments having incorporated a totally reflecting layer made by physical vapour deposition from aluminium alloy (11). This pigment exhibits excellent chromaticity, corrosion resistance, particularly in any kind of coating composition or printing ink and especially when water is present.