DIPL. ING. Katrin Steinbach, Dr Ulrich Schmidt – Eckart, Germany
Metal effect pigments have thin plateletlike particles composed of pure metals, e.g. aluminium and copper or metal alloys like bronze (copper/zinc). Unique beauty of the metallic colours derives from the play of light on the metal pigment surface caused by reflection and scattering of incident light. In the interplay with other colorants, metallic pigments are a versatile tool to adjust the shade of a colour as well as tinting strength and colour play.1 Aluminium pigments especially – as being additive to effects with many other colorants – can greatly increase the colour palette available to formulators if combined with organic absorption pigments and/or pearlescent pigments.
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