Metallipigments

Metallipigments are pigments that incorporate metallic particles or metal salts into a stable matrix. The term originates from the combination of "metal" and "pigment" and refers to a class of functional pigments that combine color, reflectivity and metallic sheen. Metallipigments can contain single metals, metal oxides, alloys or complexed metal compounds. The choice of metal determines the hue, reflectivity and durability of the pigment. Common metals used include aluminum, iron, chromium, cobalt, titanium and silver. In addition, metal salts such as chromates and dichromates produce bright colors and are used primarily in industrial applications.

The manufacturing process typically involves dispersing finely ground metal powders or metal oxide powders in a binder or polymer matrix. The binder may be water‐based, oil‐based or thermoplastic. After mixing, the blend is passed through a device that further homogenizes it, and then it is atomized or sprayed to produce pigment particles with controlled size distribution. Size and dispersion are critical for optical properties and for preventing agglomeration. Surface treatments may be applied to enhance adhesion to a particular substrate and to improve resistance to oxidation and chemical attack.

Metallipigments are employed in a range of industries. In automotive paint systems they provide the sparkling metallic effect of high‑end car finishes. In coatings and inks they are used for architectural coatings, decorative printing and protective finishes, imparting not only color but also high reflectivity that can reduce heat absorption. In industrial coatings metallipigments serve for anti‑corrosion and anti‑fouling purposes. In the electronics sector metallic pigment inks are applied to printed circuit boards to give conductive traces.

Because of their metal content, metallipigments have environmental and handling considerations, especially concerning hazardous metal residues and recycling. Regulatory bodies require proper labeling, storage and waste management. Advances in nanoparticle synthesis and alternative chelating agents aim to reduce environmental impact while improving pigment stability and performance.