Disclosed are antiviral coatings comprising silver nanoparticles, methods of their preparation and uses thereof. The antiviral coatings include silver nanoparticles bound to polyurethane polymers, acrylic polymers, and polyols bound to via the respective functional groups. The antiviral coatings have a very low silver leach rate. The silver nanoparticles are formed by reduction of silver ions by the functional groups. Further, the silver nanoparticles are stabilised by the interactions with the functional groups.

The present invention relates to a composition comprising an aqueous dispersion of a) polymer particles having a z-average particle size in the range of from 50 nm to 500 nm; b) anion exchange resin particles having a D.sub.50 median particle size in the range of from 0.1 ?m to 50 ?m; and c) polymeric organic microspheres having a D.sub.50 median particle size in the range of from 1 ?m to 20 ?m, wherein the weight-to-weight ratio of polymer particles to microspheres is in the range of from 0.5:1 to 20:1. The composition of the present invention is useful for paint compositions that form matte finishes with an excellent balance of stain blocking and stain removal properties.

The present disclosure provides a decorative coating film, which ensures and/or maintains millimeter wave transmission properties even though the decorative coating film is continuously used. The present disclosure relates to a decorative coating film formed on the surface of a resin substrate positioned in the pathway of a radar device, wherein the decorative coating film at least comprises: fine silver particles or fine silver alloy particles, nickel oxide, and a binding resin having light transmission properties, which binds the fine silver particles or the fine silver alloy particles dispersed in the decorative coating film with one another, wherein the shape of the nickel oxide is a wire shape.

A heat exchanger has channels for fluid circulation. At least part of a surface of the heat exchanger is covered with a colored coating. The colored coating includes a color additive which is selected from at least one of an organic pigment, an inorganic pigment and a dye. A thermal management system, a composite material and preparation method of the composite material with the colored coating are disclosed.

The present disclosure provides coating compositions which are transparent and hydrophobic or superhydrophobic. The coating composition may include a compound with hydrophobic moieties and a transparent binder. Methods of preparing such coatings at room temperature are also provided, along with methods of providing a transparent and hydrophobic or superhydrophobic coating to a surface. The coating compositions of the present disclosure may exhibit a transparency of at least about 95%.

A composition for forming a conductive film contains flat metal particles and a resin. The flat metal particles each have a metal oxide layer in the surface portion thereof. The flat metal particles have a ratio of the thickness of the metal oxide layer to the thickness of the flat metal particle of from 0.010 to 0.300. The thickness of the metal oxide layer is from 0.010 ?m to 2.000 ?m. In the method for manufacturing a conductive film, a composition for forming a conductive film is used, the composition containing flat metal particles and a resin. The composition for forming a conductive film is applied to a base material to form a coating film, and then the coating film is irradiated with light to sinter the coating film, thereby obtaining a conductive film. The flat metal particles each have a metal oxide layer in the surface portion thereof.

A method, according to one approach, includes forming an underlayer of a magnetic recording medium. The underlayer includes first encapsulated nanoparticles each comprising a first magnetic nanoparticle encapsulated by a first aromatic polymer, and a first polymeric binder binding the first encapsulated nanoparticles. A magnetic recording layer is formed above the underlayer. The magnetic recording layer includes second encapsulated nanoparticles each comprising a second magnetic nanoparticle encapsulated by an encapsulating layer, and a second polymeric binder binding the second encapsulated nanoparticles.

An silicon-containing electrode is formed by coating a silicon-containing slurry onto a conductive current collector. The slurry comprises a binder solution comprising a poly(carboxylic acid) binder dissolved in a mixed solvent system comprising an amide solvent of Formula I, as described herein, and a second solvent which can be water and/or an organic solvent. The binder preferably comprises poly(acrylic acid). The mixed solvent system comprises about 10 to about 99 vol % of the amide solvent of Formula I. The binder solution is utilized as a solvent for a slurry of silicon-containing particles for preparing the silicon-containing electrode. The slurries comprising the mixed solvent system have higher viscosity and are more stable than slurries containing the same concentrations of silicon particles, carbon particles, and binder in water as the sole solvent.

In one aspect, inks for use with a three-dimensional (3D) printing system are described herein. In some embodiments, a composite ink described herein comprises a carrier ink comprising a curable material and a solid powder filler dispersed in the carrier ink. In some cases, the composite ink, in an uncured state, has a highly accelerated life testing (HALT) score of at least 2 when tested at 65? C. for at least 14 days. Additionally, in some embodiments, the composite ink, in an uncured state, has an average loss factor tan ? of less than or equal to 3 or less than or equal to 2 over an angular frequency range of 0.5 to 5 rad/s.

Provided is a film for a wavelength conversion sheet that can suppress a change in color with time when applied to a wavelength conversion sheet. A film for a wavelength conversion sheet, comprising a primer layer and a first base material film in presented order, wherein a refractive index of the primer layer is defined as n.sub.1, a thickness of the primer layer is defined as t.sub.1, and a refractive index of the first base material film is defined as n.sub.2, and the following condition 1 or the following condition 2 is satisfied: Condition 1: n.sub.1<n.sub.2, and d.sub.1 represented by the following expression 1 represents a range of x?0.10 wherein x is an odd integer; Condition 2: n.sub.1>n.sub.2, and d.sub.1 represented by the following expression 1 represents a range of x?0.10 wherein x is an even integer; Expression 1: d.sub.1=n.sub.1?t.sub.1/112.5 nm.