Ultramarine pigments belong to the aluminosilicate family and are based on the natural mineral Kaolin. The crystal structure consists of AlO4 and SiO4 tetrahedra. In the voids sulfur compounds are incorporated as chromophoric groups. Depending on the structure of the sulfur compound, blue (C.I. Pigment Blue 29), red (C.I. Pigment Red 15) and purple (C.I. Pigment Violet 15) ultramarine pigments are obtained.
The Habich GmbH products offer very temperature-resistant, brilliant and lightfast ultramarine pigments. Ultramarine pigments and have limited acid resistance. This limits the range of applications for this class of pigments. Typical fields of application for ultramarine blue / violet pigments are: plastics / lacquers / construction chemicals / fibers / cosmetics / artist paints / printing inks / detergents and dishwashing detergents / personal care / paper. For applications requiring increased acid resistance, Habich offers specially modified grades with improved acid resistance.