Provided are a coating film that has high radio wave permeability and low haze in addition to excellent infrared light reflectivity and visible light permeability, and an article comprising such a coating film. The coating film is a coating film produced using a coating composition, wherein the coating composition comprises flat pigment particles and a resin component, the flat pigment particles comprise a laminate of dielectric layers and a metallic thin film layer, the dielectric layer and the metallic thin film layer are stacked alternately in the laminate, and the dielectric layers are outermost layers of the laminate, an aspect ratio of the flat pigment particles is 10 to 400, a pigment surface density of the flat pigment particles in the coating film is 50% to 300%, and a film thickness of the coating film is 1 m or more. The article comprises the coating film.

Effect pigments based on Al.sub.2O.sub.3 flakes with high weather resistance and less photoactivity and to their use thereof in paints, industrial coatings, automotive coatings, printing inks, cosmetic formulations. The effect pigments have a ratio of the amount by weight of Al.sub.2O.sub.3 of the Al.sub.2O.sub.3 flake and the amount by weight of the metal oxide(s) of the coating layer(s) in the range of from 27:73 to 83:17 based on the total weight of the effect pigment.

Opaque fluoride-doped effect pigments having a metallic lustre based on flake-form substrates, and a process for the preparation of these pigments, and the use thereof, in particular in automotive paints and cosmetic formulations.

The present invention relates to a method for preparing pearlescent pigment through metal oxide coating based on a sheet-like substrate, and the obtained pearlescent pigment. The present invention further relates to a method for preparing pearlescent pigment through coating a sheet-like substrate by hydrolyzing metal salt under an acid condition, wherein a pH value is adjusted by using inorganics such as MgO, MgOH or CaCO.sub.3 that does not dissolve in water but can dissolve through reacting with an acid. According to the method, no free metal oxide is generated when the metal salt is hydrolyzed, so that the production cost is reduced, product quality is improved, problems possibly generated in an application process of the product are avoided, and a production process is more environment-friendly.

The invention relates to anisotropic, reflective, magnetic flakes. In a liquid carrier and under influence of an external magnetic field, the flakes attract to one another side-by-side and form ribbons which provide higher reflectivity to a coating and may be used as a security feature for authentication of an object.

Candy color metallic paint finishes can be formed or repaired by applying to a substrate a colored liquid base coating composition containing a colored metal oxide-coated nontransparent silver dollar aluminum flake pigment and optional additional colored pigments or dyes dispersed in a first hardenable binder to form a reflective colored base layer that hides the primed substrate and has a sparkling metallic appearance. A colored liquid intermediate coating composition containing a colored pigment or dye dispersed in a second hardenable binder is applied to the base layer to form a colored intermediate layer that increases the color saturation of incident light reflected from the base layer. The intermediate layer can be overcoated with a liquid clearcoat composition. The completed finish can replicate an original equipment manufacturer multilayer candy color metallic finish, while providing ease of application, low sensitivity to layer thickness variation, and low mottle.

An optical device includes a colored reflector layer having a first surface, a second surface opposite the first surface, and a third surface; and a selective light modulator layer external to the first surface of the colored reflector layer. A method of making an optical device is also disclosed.

In light of diversification of required properties, the present disclosure seeks to improve glitter pigments from a viewpoint different from the intensity and vividness of color. The present disclosure provides a glitter pigment including: a flaky substrate; and a coating including zirconium oxide on the flaky substrate, wherein a mean deviation of mean friction coefficient (MMD) of the glitter pigment is 1.5 or less. The present disclosure also provides a glitter pigment including: a flaky substrate; and a coating including zirconium oxide on the flaky substrate, wherein a specific surface area of the glitter pigment is 0.5 cm.sup.2/g or more.

An article includes a reflector having a first surface, a second surface opposite the first surface, and a third surface; and a first selective light modulator layer external to the first surface of the reflector; wherein the third surface of the reflector is open. A method of making an article is also disclosed.

A method of producing mixtures of interference pigments having special effects comprises mixing at least one large particle size interference pigment with at least one normal size interference pigment of predetermined colors and in proportions desired to obtain a unique effect.