PENYEDIAAN PIGMEN VARIABEL OPTIK PENGUBAHAN WARNA DIANTARA DUA WARNA YANG BERBEDA, KOMPOSISI LAPISAN BERISI SAMA, METODA UNTUK PEMBUATAN SAMA DAN SUBSTRAT YANG DILAPISI DENGAN KOMPOSISI PELAPISAN

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.