Abstract: To provide an anti-fogging article having excellent anti-fogging performance and further having excellent durability, and an anti-fogging agent composition. An anti-fogging article comprising a substrate and a water-absorptive crosslinked resin layer formed on the surface of the substrate, wherein the water-absorptive crosslinked resin is a crosslinked resin with a saturated water absorption of at least 45 mg/cm3, or a water-absorptive crosslinked resin with a glass transition point of at least 50° C. as measured by a differential scanning calorimeter and further with a saturated water absorption of at least 45 mg/cm3.

Abstract: To provide an anti-fogging article having excellent anti-fogging performance and further having excellent durability, and an anti-fogging agent composition. An anti-fogging article comprising a substrate and a water-absorptive crosslinked resin layer formed on the surface of the substrate, wherein the water-absorptive crosslinked resin is a crosslinked resin with a saturated water absorption of at least 45 mg/cm3, or a water-absorptive crosslinked resin with a glass transition point of at least 50° C. as measured by a differential scanning calorimeter and further with a saturated water absorption of at least 45 mg/cm3.

Abstract: To provide a composition for forming a water repellent film which has an excellent water droplets-removing property and further has abrasion resistance and weather resistance; a substrate having such a water repellent film which is formed from the composition, and a process for its production; and an article for a transport equipment. A composition for forming a water repellent film comprising, as the main components, a specific organosilane compound having a fluorinated organic group containing an etheric oxygen bond, and a specific organosilane compound having a fluorinated organic group (containing no etheric oxygen bond); a substrate with a water repellent film comprising a substrate and a water repellent film having disposed, as the outermost layer, a layer formed from the composition for forming a water repellent film, on the surface of the substrate; and an article for a transport equipment comprising the substrate.

Abstract: To provide a water-repellent substrate with its surface having a large water contact angle and capable of maintaining the contact angle even against abrasion. A process for producing a water-repellent substrate, characterized by forming, on at least one side of a substrate, an undercoat layer which comprises the following aggregates (A) of metal oxide fine particles and a metal oxide type binder (provided that the metal oxide type binder is a component formed from a binder material containing a metal compound (B) which can be converted to a metal oxide by hydrolytic condensation or pyrolysis) and which has a concave-convex surface, and then, forming a water-repellent layer on the undercoat layer: Aggregates (A) of metal oxide fine particles: aggregates which are each composed of metal oxide fine particles having an average primary particle size of from 10 to 80 nm and which have an average aggregate particle size of from 100 to 1200 nm.

Abstract: To provide a coating composition capable of forming a hydrophilic coating film which has high transparency and which is excellent in abrasion resistance (adhesion), hydrophilicity (anti-fogging, wettability and anti-fouling properties) and hydrophilic durability. A coating composition for forming a hydrophilic coating film, which comprises boehmite particles, silica particles, a binder and water, wherein the crystallite diameter of the boehmite particles, as calculated from the diffraction peak of the (120) plane, is from 20 to 50 nm, the average particle diameter of the silica particles is from 5 to 50 nm, the proportion of the boehmite particles is from 20 to 80 mass % based on the total amount of the boehmite particles and the silica particles, and the proportion of the binder is from 0.5 to 15 parts by mass per 100 parts by mass in total of the boehmite particles and the silica particles.

Abstract: To provide an agricultural film which has high transparency and which has a coating film formed with excellent abrasion resistance (adhesion), hydrophilicity (anti-fogging, wettability and anti-fouling) and hydrophilic durability. An agricultural film 10 comprising a base material film 12 and a porous hydrophilic coating film 14 formed on the base material film 12. The hydrophilic coating film 14 contains boehmite particles, silica particles and a binder, wherein (a) the atomic ratio of Al to Si (Al/Si) is from 0.2 to 5.0, (b) the average particle diameter of the silica particles is from 5 to 50 nm, and (c) the crystallite diameter of the boehmite particles, as calculated from the diffraction peak of the (120) plane is from 20 to 50 nm. The hydrophilic coating film 14 is formed by applying a composition comprising boehmite particles, silica particles, a binder and water, on a surface of a base material film, followed by drying.

Abstract: To provide dense hollow particles having a thin shell, a process for simply producing the hollow particles at low cost, a coating composition for forming a coating film having a high antireflection property and an article having a coating film having a high antireflection property. Hollow particles each composed of a shell made of silicon oxide as the main component, wherein the thickness of the shell is from 0.5 to 4 nm, and in the histogram of the pore volume obtained by the nitrogen adsorption method, the maximum value of the pore volume is from 0.01 to 0.08 mL/g within the range of the pore diameter of at most 3 nm.

Abstract: To provide core-shell particles having a dense shell, and a method whereby the core-shell particles can be produced in a short period of time. Core particles wherein the shell has a thickness of from 1 to 500 nm and has 0.01 cc/g as the maximum pore volume value of pores having diameters of at most 3 nm in a pore volume histogram obtained by nitrogen adsorption, and an average particle size in a dispersion medium is from 1 to 1,000 nm; is obtained by irradiating a liquid containing core particles made of a material having a dielectric constant of at least 10 and a metal oxide precursor with a microwave to form a shell made of a metal oxide on the surface of the core particles.

Abstract: To provide a method whereby core-shell particles and hollow particles can be produced while suppressing formation of a gel or particles made of a shell-forming material; core-shell particles and a coating composition wherein a shell thickness is strictly controlled; and an article having a coating film having a high antireflection effect. Core-shell particles obtained by irradiating a liquid containing core particles made of a material having a dielectric constant of at least 10 and a metal oxide precursor with a microwave to form a shell made of a metal oxide on the surface of the core particles are used.

Abstract: The present invention relates to a metallic oxide film which exhibits a high hardness and is good in terms of the transparency, and which exhibits a hydrophilic property, a defogging and dirtproof property and a self-cleaning property over a long period of time, a production process for the same, and a hydrophilic mirror comprising this hydrophilic metallic oxide film. The present invention is characterized in that the superficial shapes of a metallic oxide film formed on a substrate surface is such that the superficial shapes of the metallic oxide film are such that an arithmetic average roughness Ra is 4-8 nm, a maximum roughness (maximum irregularity difference) Rz is 40-70 nm, a 10-point average roughness RzJIS is 20-60 nm, and pitches between irregularities are 10-300 nm, the Ra, Rz, RzJIS and pitches measured by an atomic force microscope. The metallic oxide film of such superficial shapes is useful as a hydrophilic mirror, and can be used appropriately as automotive outer mirrors.

Abstract: To provide hollow fine particles having a refractive index suppressed and having excellent alkali resistance, a production process thereof, a coating composition with which a coating film having an antireflection effect and excellent alkali resistance can be formed, and an article which can maintain a high antireflection effect for a long period of time. Hollow fine particles containing SiO2 as the main component and containing Zr, wherein the Zr content (as calculated as ZrO2) is from 0.

Abstract: To provide hollow fine particles with which a coating film having a high antireflection effect and high film strength can be obtained, a production process thereof, a coating composition with which a coating film having a high antireflection effect and high film strength can be formed, and an article which can maintain a high antireflection effect for a long period of time. Hollow fine particles containing SiO2 as the main component and containing other metal, wherein the amount of said other metal (as calculated as oxide) is from 0.

Abstract: To provide an article having a water-repellent surface, which has excellent water repellency and abrasion resistance. An article having a water-repellent layer comprising the following inner layer and the following surface layer, on a surface of a substrate, and characterized in that the surface of the water-repellent layer has (a) a surface area ratio (S ratio) of from 1.01 to 1.

Abstract: The present invention provides a coating solution for forming antireflective film which can form an antireflective film having high antireflective performance and high film strength; and an article having high antireflective performance for a long period of time. A coating composition for forming antireflective film containing a dispersion medium, a fibrous solid fine particles, hollow fine particles and a binder, wherein the average agglomerated particle size of the fibrous solid fine particles measured by a dynamic light-diffusion method is larger than the average agglomerated particle size of the hollow fine particles measured by a dynamic light-scattering method; and an article on which an antireflective film made from the coating composition for forming antireflective film is formed.

Abstract: To provide an anti-fogging article having excellent anti-fogging performance and further having excellent durability, and an anti-fogging agent composition. An anti-fogging article comprising a substrate and a water-absorptive crosslinked resin layer formed on the surface of the substrate, wherein the water-absorptive crosslinked resin is a crosslinked resin with a saturated water absorption of at least 45 mg/cm3, or a water-absorptive crosslinked resin with a glass transition point of at least 50° C. as measured by a differential scanning calorimeter and further with a saturated water absorption of at least 45 mg/cm3.

Abstract: To provide a process for producing a dispersion of hollow fine SiO2 particles which contains no residual core fine particles, generates no uncontrollable agglomerates, and is easy to filtrate.

Abstract: To provide a dispersion of hollow SiO2, capable of obtaining, when formed into a coating composition, an antireflection film having high antireflection properties and low chroma saturation by forming a low refractive index coating film having a refractive index gradient. A dispersion of fine silica particles, having agglomerated particles which are agglomerates of primary fine particles of hollow SiO2 dispersed in a dispersion medium, wherein the average particle size of the agglomerated particles is within a range of from 60 to 400 nm, and the average particle size is at least 1.5 times the average primary particle size of the silica. When a coating composition containing the dispersion is to be obtained, the matrix component is preferably a precursor of a metal oxide or an organic resin. By applying the coating composition to a substrate, a substrate with an antireflection coating film is obtained.

Abstract: A press molding die capable of preventing a workpiece from moving is provided. The press molding die includes a punch for pressing a workpiece; a molding die having a molding surface on which the workpiece is placed and a concave portion which is formed on the molding surface and which has a shape corresponding to the punch; a pad for pressing a part of the workpiece placed on the molding surface and which is on the periphery of the concave portion; and a micro-rough layer which is formed by performing a particulate coating process on at least one of a portion of the pad, for pressing the workpiece, and a portion of the molding surface, corresponding to the portion of the pad. Preferably, the height of roughness of the micro-rough layer is 0.01 to 0.06 mm, and the particulate coating process is performed using a silicofluoric chrome plating solution.

Abstract: A subject for the invention is to form a coating film which has high transparency and excellent adhesion to organic base materials and retains long-lasting excellent effects concerning hydrophilicity, antifogging properties, droplet repellency, and antifouling properties. The invention relates to an inorganic coating composition capable of forming a hydrophilic coating film on an organic base material, the organic coating composition comprising alumina particles having an aggregate diameter in a dispersion medium of 20-400 nm and either a silicic acid oligomer or a colloidal silica, a surfactant, a water-miscible organic solvent which is capable of swelling or dissolving the organic base material and has a boiling point of 120° C. or higher at an atmospheric pressure of 0.

Abstract: The present invention relates to a metallic oxide film which exhibits a high hardness and is good in terms of the transparency, and which exhibits a hydrophilic property, a defogging and dirtproof property and a self-cleaning property over a long period of time, a production process for the same, and a hydrophilic mirror comprising this hydrophilic metallic oxide film. The present invention is characterized in that the superficial shapes of a metallic oxide film formed on a substrate surface is such that the superficial shapes of the metallic oxide film are such that an arithmetic average roughness Ra is 4-8 nm, a maximum roughness (maximum irregularity difference) Rz is 40-70 nm, a 10-point average roughness RzJIS is 20-60 nm, and pitches between irregularities are 10-300 nm, the Ra, Rz, RzJIS and pitches measured by an atomic force microscope. The metallic oxide film of such superficial shapes is useful as a hydrophilic mirror, and can be used appropriately as automotive outer mirrors.