The present invention relates to an effect pigment dispersion comprising water, a flake aluminum pigment, and a cellulose-based rheology control agent, wherein the effect pigment dispersion contains 0.1 to 10 parts by mass of solids based on 100 parts by mass of all components thereof, the viscosity measured using a Brookfield type viscometer is 400 to 10000 mPa.Math.sec at a rotational speed of 6 revolutions per minute, and the solids content of the flake aluminum pigment is 30 to 200 parts by mass based on 100 parts by mass of the total amount of components other than the flake aluminum pigment in the total solids content.

An asymmetric pigment including a first Fabry-Perot structure; and a second Fabry-Perot structure; wherein the first Fabry-Perot structure and the second Fabry-Perot structure have a similar hue angle within +/45 degrees is disclosed. Other asymmetric pigments are also disclosed as well as methods of making the disclosed pigments.

This invention deals with effect pigment comprising a colored hectorite which is produced by ion exchange process of an initial hectorite with a cationic dye, wherein the initial hectorite can be represented by the formula

K.sub.z/n[Li.sub.xMg.sub.(3.0(x+y)ySi.sub.4O.sub.10F.sub.2](I); wherein n is the charge of K and z=x+2y with 0.2<z<0.8; x=0-0.8; y=0-0.4; K is a cation chosen from a first group consisting of Li.sup.+, Na.sup.+, K.sup.+, NH.sub.4.sup.+, Rb.sup.+, Cs.sup.+, Mg.sup.2+, Ca.sup.2+, Ba.sup.2+ or mixtures thereof or from a second group consisting of alkylammonium salts with 2 to 8 C-atoms, wherein the alkyl can be branched or linear, or from a mixture of cations from the first and the second group and represents not occupied octahedral lattice sites.

Furthermore, these colored hectorites can have a coating thereon comprising at least one layer with a high index of refraction >1.8 or a semitransparent metal and optionally an outer protective layer.

This invention deals with effect pigment comprising a colored hectorite which is produced by ion exchange process of an initial hectorite with a cationic dye, wherein the initial hectorite can be represented by the formula

K.sub.z/n[Li.sub.xMg.sub.(3.0(x+y)ySi.sub.4O.sub.10F.sub.2](I); wherein n is the charge of K and z=x+2y with 0.2<z<0.8; x=0-0.8; y=0-0.4; K is a cation chosen from a first group consisting of Li.sup.+, Na.sup.+, K.sup.+, NH.sub.4.sup.+, Rb.sup.+, Cs.sup.+, Mg.sup.2+, Ca.sup.2+, Ba.sup.2+ or mixtures thereof or from a second group consisting of alkylammonium salts with 2 to 8 C-atoms, wherein the alkyl can be branched or linear, or from a mixture of cations from the first and the second group and represents not occupied octahedral lattice sites.

Furthermore, these colored hectorites can have a coating thereon comprising at least one layer with a high index of refraction >1.8 or a semitransparent metal and optionally an outer protective layer.

The invention relates to glaze- and enamel-stable effect pigments having a top layer comprising at least one tin/antimony mixed oxide, which have improved stability, in particular at temperatures above 1000 C., in glazes, enamels, ceramic or glass-like materials.

The present invention relates to interference pigments based on transparent, low-refractive-index, flake-form substrates which have a high-refractive-index coating consisting of TiO.sub.2 having a layer thickness of 20-200 nm and optionally an outer protective layer, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, button pastes, ceramic materials, glasses, for seed coloring, as dopants in the laser marking of plastics and papers, as additive for the laser welding of plastics, as additive for coloring in the foods and pharmaceuticals sectors, and in cosmetic formulations and for the preparation of pigment compositions and dry preparations.

The present invention relates to interference pigments based on transparent, low-refractive-index, flake-form substrates which have a high-refractive-index coating consisting of TiO.sub.2 having a layer thickness of 20-200 nm and optionally an outer protective layer, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, button pastes, ceramic materials, glasses, for seed coloring, as dopants in the laser marking of plastics and papers, as additive for the laser welding of plastics, as additive for coloring in the foods and pharmaceuticals sectors, and in cosmetic formulations and for the preparation of pigment compositions and dry preparations.

The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, inter alia in paints, coatings, printing inks, plastics and in cosmetic formulations.

The present invention relates to effect pigments which are based on flake-form substrates having a circular form factor of 1.2-2 and are coated with at least one high-refractive-index layer, and to the use thereof, inter alia in paints, coatings, printing inks, plastics and in cosmetic formulations.

A method for forming a multilayer coating film, comprising: (1) applying a yellow pigment-containing paint (X) to a substrate to form at least one layer of a yellow coating film; (2) applying an effect pigment dispersion (Y) to the yellow coating film to form an effect coating film; (3) applying a clear paint (Z) to the effect coating film to form a clear coating film; and (4) heating the yellow coating film, the effect coating film, and the clear coating film to separately or simultaneously cure the coating films, wherein the multilayer coating film has an h value of 60 to 120, the multilayer coating film has a Y5 value of 200 or more, and the multilayer coating film has a CS value of 90 or more, wherein the CS value is expressed by a specific equation.