An article including a reflector having a first surface and a second surface opposite the first surface; a first selective light modulator layer external to the first surface of the reflector; a second selective light modulator layer external to the second surface of the reflector; a first absorber layer external to the first selective light modulator layer; and a second absorber layer external to the second selective light modulator layer; wherein each of the first and second selective light modulator layers include a host material is disclosed herein. Methods of making the article are also disclosed.

The present invention relates to a pigment mixture based on spherical particles having a defined particle-size distribution, and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, in cosmetic formulations, as tracer, as filler and for the preparation of pigment preparations and dry preparations.

The present invention relates to a pigment mixture based on at least two components A and B, where component A is a mixture of flake-form and spherical substrates which is covered with one or more inorganic layers and/or organic layers, and component B comprises crystalline or amorphous particles selected from the group of the metal oxides, metal hydroxides, metal oxy-halides, Prussian Blue or mixtures thereof,

and to the use thereof in paints, coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, in cosmetic formulations, as tracer, as filler and for the preparation of pigment preparations and dry preparations.

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.

The present disclosure provides an optical film, a structural colored pigment, and a method for preparing an optical film. The optical film includes a multilayer film. The multilayer film includes films with high refractive indexes and films with low refractive indexes alternately arranged in a multilayer manner, and a middle film. Some of the films with the high refractive indexes and some of the films with the low refractive indexes are disposed on a side of the middle film, constituting first other films. Optical thicknesses of films having a same refractive index in the optical films and an optical thickness of the middle film are all different or partially different.

Pigments based on particles which are coated with at least one layer which consists of a mixture of amorphous carbon (a-C) and nanocrystalline graphite (nc-graphite) and use of these pigments in, for example, paints, plastics, industrial coatings, automotive coatings, printing inks and cosmetic formulations.

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.

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.

An effect pigment includes a substrate; an outer layer disposed above the substrate; and particles disposed above the substrate and at least partially entrapped by the outer layer, the particles comprising quantum dots.