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.

The present invention relates to an effect pigment comprising as a substrate a glass flake with a coating, said coating comprising at least one layer of at least one high refractive material, said material having a refractive index of at least 1.8, and/or at least one layer of at least one semitransparent metallic material, wherein said glass flakes comprising the following composition: 65-75 wt.-% silicon oxide, preferably SiO.sub.2 2-9 wt.-% aluminum oxide, preferably AI.sub.2O.sub.3 0.0-5 wt.-% calcium oxide, preferably CaO 5-12 wt.-% sodium oxide, preferably Na.sub.2O 8-15 wt.-% boron oxide, preferably B.sub.2O.sub.3 0.1-5 wt.-% titanium oxide, preferably TiO.sub.2 0.0-5 wt.-% zirconium oxide, preferably ZrO.sub.2 based on the weight of said glass flakes. The invention relates also to a method for producing the effect pigments as well as to the use of said effect pigments. The invention further relates to coating formulations based on the effect pigments.

The present invention relates to five-layered pigments based on multi-coated platelet-shaped substrates which comprise a layer sequence comprising (A) a layer of SnO.sub.2 having a layer thickness of 0.1-50 nm, (B) a high-refractive-index coating consisting of TiO.sub.2 in the rutile modification having a layer thickness of 10-800 nm, (C) a colorless coating having a refractive index n1.8 having a layer thickness of 20-800 nm, (D) a high-refractive-index coating consisting of SnO.sub.2 having a layer thickness of 0.1-50 nm, (E) a layer of TiO.sub.2 in the rutile modification having a layer thickness of 10-800 nm,
and optionally (F) an outer protective layer,
and to the use thereof in paints, coatings, powder coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, as dopants for the laser marking of papers and plastics, in cosmetic formulations and for the preparation of pigment preparations and dry preparations.

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.

This invention involves a coated flaky metal effect pigment comprising a metal effect flake as substrate coated by the following consecutive coating sequences: a) optionally a discontinuous or a continuous layer of Mo-oxide, b1) an inorganic metal oxide layer comprising mainly SiO.sub.2, c1) a hybrid layer comprising SiO.sub.2 modified by a diphenyl silane, a phenylsilane or mixtures thereof or c2) a hybrid layer comprising SiO.sub.2 modified by a diphenyl silane, a phenylsilane or mixtures thereof, b2) an inorganic metal oxide layer comprising mainly SiO.sub.2, and d) optionally a further top-coat of organofunctional silanes, titanates, aluminates or zirconates.

Temperature-stable effect pigments based on multicoated flake-form substrates, and the use thereof in paints, coatings, printing inks, plastics and in particular in glazes, enamels, ceramic or glass-like materials.

Non-conductive pigments, coatings, films, articles, methods of manufacture thereof, and methods of use thereof are provided. The non-conductive pigment comprises a flake comprising at least four layers comprising alternating low index of refraction layers and high index of refraction layers. A difference in an average index of refraction between adjacent layers as measured over a wavelength range of 400 nm to 700 nm is at least 1.5. In certain examples, the high index of refraction layers have a Q value of at least 0.930, such as, at least 0.950 or at least 1.000. The pigment has an average visible specular reflectance of at least 80% and the pigment exhibits and the flake has a bandwidth of at least 300 nm between an upper wavelength and a lower wavelength at which a specular reflectance drops below 50%.

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.

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.

A composition including a dual cavity color shirting pigment and a single cavity color shifting pigment is disclosed. A method of making the composition is also disclosed.