An ultraviolet absorbing additive is described for chemical compositions. The additive is provided in powdered form, preferably adhered to a silica carrier, thereby allowing it to be introduced into powdered and liquid coating formulations. The additive itself comprises at least 50 wt. % of base resins, including polyester, carboxylated polyester, and epoxy, thereby lending enhanced utility and functionality in ancillary areas such as improved physical properties, flow characteristics, strong weathering resistance, gloss control, yellowing-resistance, and protection against thermal and light degradation.

The present disclosure provides a high refractive index acrylic formulation embedded with sub-10 nm metal oxide nanocrystals. The formulation is ideal for high refractive index, high transparency coating for a variety of optical applications including OLED lighting.

A composition suitable for coating a metallic substrate that is susceptible to corrosion is disclosed. The composition comprises a carrier medium, 2D material/graphitic platelets, and one or both of conductive carbon black particles and carbon nanotubes, in which the 2D material/graphitic platelets comprise nanoplates of one or more 2D materials and or nanoplates of one or more layered 2D materials and or graphite flakes in which the graphite flakes have one nanoscale dimension and 25 or less layers, the conductive carbon black particles have a mean particle size in the range of 1 nm to 1000 nm, and the carbon nanotubes are single or multiwalled.

A matte finish coating for application to a substrate includes in a mixture a coating substance and a micronized polymer matting agent. The matte finish coating comprises the micronized polymer matting agent in an amount, by overall weight of the matte finish coating, of about 0.5% to about 15%.

A coating composition, a method for manufacturing a substrate using the same, and an optical device are provided. The method for manufacturing the substrate provides the substrate having excellent performance, as the substrate has fixed spacers on its surface; by using a single layer in which nanoparticles and spacers are dispersed in an alignment film to reduce processes and cost. The optical device may be manufactured by such method.

A coating solution for forming an insulating film for a grain-oriented electrical steel sheet which contains one or more types of hydrous silicate powders having an average particle size of 2 m or less, and one or more types of phosphoric acids and phosphates satisfying a relation of n.sub.iM.sub.i/P.sub.i0.5, and satisfies (Formula 1). 1.5(n.sub.iM.sub.i+n.sub.jM.sub.j)/P.sub.i15 . . . (Formula 1) (P represents the number of moles of phosphorus, M represents the number of moles of metal ions derived from the phosphate, n represents the valence of the metal ions derived from the phosphate, i represents the number of types of phosphates, M represents the number of moles of metal elements in the hydrous silicate, n represents the valence of the metal elements in the hydrous silicate, and j represents the number of types of hydrous silicates).

Hexavalent chromium-free slurry formulations which are suitable in the production of ceramic overlay coating systems are described. The formulations provide superior hot corrosion and heat oxidation protection for superalloy substrates. A basecoat slurry and topcoat slurry are provided. The basecoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3 with the incorporation of metal oxide particles. The topcoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3. Both of the basecoat slurry and the topcoat slurry are hexavalent chromium-free.

Inorganic coatings that may be used to coat and protect galvanized steel are disclosed. The protective inorganic coatings include a liquid composition portion comprising water, alkali metal oxide components and a silicate-containing component. The coatings also include a powder composition portion comprising microspheres, metal oxide powder and optional microfibers. When applied to galvanized steel, the coatings provide chemical and physical protection.

There is provided a silver powder which has a small average particle diameter and a small thermal shrinkage percentage, and a method for producing the same. While a molten metal of silver heated to a temperature (1292 to 1692 C.), which is higher than the melting point (962 C.) of silver by 330 to 730 C., is allowed to drop, a high-pressure water is sprayed onto the molten metal of silver (preferably at a water pressure of 90 to 160 MPa) to rapidly cool and solidify the molten metal of silver to powderize silver to produce a silver powder which has an average particle diameter of 1 to 6 m and a shrinkage percentage of not greater than 8% (preferably not greater than 7%) at 500 C., the product of the average particle diameter by the shrinkage percentage at 500 C. being 1 to 11 m.Math.% (preferably 1.5 to 10.5 m.Math.%).

A coating composition for coating of components of a flow machine, especially a turbomachine such as a gas turbine with compressor, or of a compressor, which are exposed to the fluid stream of the flow machine or of the compressor, wherein the coating composition includes anticorrosion pigments, wherein the coating composition includes hard material particles, and wherein the coating composition is an RT-curing, UV-curing and/or thermally curing coating composition. A component of a flow machine or of a compressor has the coating composition. A method of maintaining a flow machine or a compressor uses the coating composition.