Pigments and Dyes

A world without color would be dull and drab. The elements and substances that make everything colorful are, on the one hand, divided according to the chemical structure into inorganic and organic colorants. On the other hand, the designation pigment or dye is geared toward how the colorant behaves in a particular medium. Therefore, the distinction between pigment and dye is not rigid and a single substance can be both a pigment and a dye at the same time.

Pigments are made up of particulate matter that is insoluble in its vehicle and therefore must be finely dispersed in a binding agent. Due to their optical properties they are used as chromophoric substances, for example in paints, printing inks or Inkjet inks or, thanks to special technical and chemical properties, as anticorrosive agents for example.

Dyes are also inorganic or organic colorants which, in contrast to pigments, are completely soluble in their vehicle (water or organic solvents). They are used, for example, to color textiles (textile dyes), plastics and plastic fibers and as chromophoric substances in food technology, e.g. beta-carotene in soft drinks.

Pigment Production

The ultra-fine grinding of pigments places high demands on the machine technology to be employed. The finest, absolutely grit-free granulation, low-residue processing with minimal contamination, as well as fast, thorough cleaning when switching products are the minimum requirements.

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Today's demands on toner powder for modern laser printers and photocopiers are high: the best print results in bright colors with the finest thin line development possible, low consumption and the best possible adhesion to all print media, just not in the machine itself.

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Titanium Dioxide

Titanium dioxide is produced by the sulfate process or chloride process. It is by far the most important white pigment today and is used in diverse fields which include, for example, applications in the life sciences, in biotechnology as well as in the pharmaceutical and cosmetics industries.

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