Sensory pigments for use on foods, packages, paper, as well as in the pharmaceutical and electronic products

摘要

The invention relates to sensory pigments for use in foods, packagings, pharmaceutical products, paper and electronic products. Said pigments are characterised by the fact that a chemically reactive polymer layer that is 5 to 500 nm thick is applied to metallic particles, metal particles or particles containing at least one metal-oxygen compound, said particles being preferably platelet or fibre-shaped, and a layer of chromophore particles that are between 1 and 100 nm in size is applied to the polymer layer, said particles having a colour that is visible to the human eye and that changes after contact with an analyte.