Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

The present invention relates to an article having a surface coated with a nanostructured temporary super-hydrophobic film having a static contact angle with water of at least 140°, and comprising nanoparticles functionalized with a hydrophobic agent, wherein the functionalization of the nanoparticles with the hydrophobic agent has been performed before said nanostructured temporary super-hydrophobic film is coated on said surface. The surface of the article exhibits a static contact angle with water of less than 60° before being coated with the nanostructured temporary super-hydrophobic film. The treatment according to the invention can be used to provide an antirain function to optical articles having a hydrophilic surface.

Described herein is a process of preparing a structural colored coating film including steps of i) applying colloidal particles dispersed in a solvent mixture including at least two organic solvents onto a substrate to form a colloidal particles layer; ii) drying the colloidal particles layer to form a photonic crystal structure layer; iii) applying a coating composition including at least one thermally crosslinkable resin and at least one crosslinking agent onto the photonic crystal structure layer to form a coating; and iv) heat curing. Also described herein is an article having at least one structural colored coating film obtainable or obtained from the process.

A liquid-repellent structure includes a surface to which liquid repellency is to be imparted; a foundation layer having a surface and disposed to face the surface to which liquid repellency is to be imparted; and a liquid-repellent layer disposed to face the surface of the foundation layer, wherein the foundation layer contains an acid-modified polyolefin, the liquid-repellent layer contains a fluorine-containing resin and particles, and the fluorine-containing resin contains a hydrophilic structural unit having at least one of an amino group and an amide group. A packaging material has the liquid-repellent structure disposed to face a product. The packaging material can also be applied to a product that is a selected one of hand soap, body soap, shampoo, rinse, creams, and cosmetics and that contains a surfactant.

Novel coatings disclosed herein can be used to mitigate dust adhesion. In one embodiment, a method of making a dust repellant coating includes combining a titanium dioxide sol with colloidal silica to form a mixture. The method also includes adding solvent to the mixture, stirring the mixture for about an hour, and filtering the mixture into a solution of titanium dioxide and silica dioxide.

Provided is a water repellent coating film, including: an undercoat layer formed on a surface of a base material and containing: at least one type of spherical particles having an average particle diameter of 2 μm or more and 50 μm or less and selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles; and an underlying resin; and a topcoat layer formed on the undercoat layer and containing: inorganic fine particles having an average particle diameter of 2 nm or more and 20 nm or less; and a water repellent resin. The underlying resin is preferably a polyurethane resin or a fluororesin. The water repellent resin is preferably a fluororesin or a silicone resin.

Composite coatings that passively cool when exposed to the sky are provided. The composite coatings are suitable for increasing atmospheric condensation on a surface of a substrate. In particular, the composite coatings may be suitable for capturing atmospheric water. Also provided are methods for producing the composites coatings, methods for coating the surface of substrates with the composite coatings, methods for condensing and collecting atmospheric water, and systems for collecting condensed atmospheric water.

Provided is a coating composition from which a coating film having excellent decontamination properties, scratch resistance, and transparency can be formed. Specifically, provided is a coating composition containing a resin (A) having a hydroxyl group and an alkoxysilyl group, a curing agent (B), and an acrylic resin-coated silica particle (C) dispersion, wherein: the acrylic resin-coated silica particle (C) dispersion is a reaction product of silica particles with a polymerizable unsaturated group (c1) and a polymerizable unsaturated monomer mixture (c2); and the polymerizable unsaturated monomer mixture (c2) contains, as at least a part of components thereof, a polymerizable unsaturated monomer having a polysiloxane structure (c21) and an alkoxysilyl group-containing polymerizable unsaturated monomer (c22).

Provided is a coating composition from which a coating film having excellent decontamination properties, scratch resistance, and transparency can be formed. Specifically, provided is a coating composition containing a resin (A) having a hydroxyl group and an alkoxysilyl group, a curing agent (B), and an acrylic resin-coated silica particle (C) dispersion, wherein: the acrylic resin-coated silica particle (C) dispersion is a reaction product of silica particles with a polymerizable unsaturated group (c1) and a polymerizable unsaturated monomer mixture (c2); and the polymerizable unsaturated monomer mixture (c2) contains, as at least a part of components thereof, a polymerizable unsaturated monomer having a polysiloxane structure (c21) and an alkoxysilyl group-containing polymerizable unsaturated monomer (c22).

This application relates to omniphobic materials which are physically and chemically modified at their surface to create hierarchically structured materials with both nanoscale and microscale structures that provide the omniphobic properties. Methods of making such omniphobic surfaces with hierarchical structures and uses thereof, including as flexible films that repel contaminants are also disclosed in the application.