Composite particles of the present invention include alumina particles and an inorganic coating disposed on a surface of the alumina particles, the alumina particles containing molybdenum (Mo), the inorganic coating including a composite metal oxide.

Disclosed are a pearlescent pigment and a preparation method therefor, wherein the pigment has a multilayered structure including a low-refractive index material layer between high-refractive index material layers on a glass flake substrate and thus has high color intensity, various colors depending on the viewing angle, and an improved sparkling effect. The pearlescent pigment according to the present invention comprises: a glass flake substrate having a D.sub.10 value of 40-80 m, a D.sub.50 value of 160-250 m, and a D.sub.90 value of 350-600 m and a thickness of 500 nm or more; and a metal oxide layer coated on the substrate, the metal oxide layer having a structure of a first metal oxide layer/an intermediate oxide layer containing MgO.Math.SiO.sub.2/a second metal oxide layer.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

Alpha-Alumina flakes having a particle thickness of 130-400 nm, a D.sub.50-value of 15-30 m, a D.sub.90-value of 30-45 m and a D.sub.10-value of <9.5 m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.

Ceramic colours containing effect pigments and a liquid glass forming component for decoration of metallic, ceramic and glassy articles and a process for the preparation of a ceramic glaze.

The invention relates to ceramic colors comprising effect pigments and a silicon comprising polymer for decoration of metallic, ceramic and glassy articles and to a process for the preparation of a ceramic glaze.

The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.

The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.

The invention relates to an absorbent effect pigment including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one spacer layer. The invention further relates to a process for production of and to the use of the absorbent effect pigment.

The present invention relates to the use of one or more pearlescent pigments based on flake-form substrates for coloring wafers, edible paper and similar baked goods.