There is provided a dispersion composition having a high dispersion stability, and containing metal oxide particles having a primary particle diameter of 1 nm to 100 nm (A), a polymer compound having an acid value of 120 mgKOH/g or more, which is represented by the following Formula (1) (B), and a solvent (C).

(A.sup.1-R.sup.2.sub.nR.sup.1P.sup.1).sub.mFormula (1)

Provided is a coating composition excellent in antifouling properties, transparency and hydrophilicity, wherein the coating composition contains (A) a metal oxide particle having a number average particle size of 1 nm to 400 nm; and (B) a polymer particle, in which the content of an aqueous-phase component in the component (B), represented by the expression (I), is 20 mass % or less, where (I) (%)=(dry mass of a filtrate obtained by filtering the component (B) at a molecular cutoff of 50,000)(100total mass of solid content)/(mass of the filtratedry mass of the filtrate)100/the total mass of solid content.

A wet coating composition useful for coating a cellulosic fiber-based substrate is provided. The composition includes two aqueous emulsions. The first emulsion includes an oxidized paraffin/polyethylene wax and the second emulsion includes an ethylene/acrylic acid copolymer wax, ethylene/acrylic amide copolymer wax, ethylene/acrylic acid/acrylic amide copolymer wax or a mixture thereof. The oxidized paraffin/polyethylene wax has a surface energy less than or equal to 2 m N/m being substantially dispersive energy. The wet coating composition when dried forms a coating having a surface energy ranging from 20 to 60 m N/m being the sum of dispersive and polar energies. A process for treating a cellulosic fiber-based substrate with the wet coating composition, a substrate coated and articles including the coated substrate are also described. The process involves a heating step to allow migration of the coating towards a core of the cellulosic fiber-based substrate.

The present invention relates to laser-markable and laser-weldable polymeric materials which are distinguished by the fact that they comprise at least one fluorine-doped tin oxide (FTO) as absorber.

A nanoparticle-containing solution comprising nanoparticles of a metal oxide, and a solution obtained by dissolving, in an organic solvent, a phosphoric acid ester and a reactive group-containing carbonyl compound as hydrophobic treatment agents, the phosphoric acid ester having an alkylene oxide chain, and an alkyl group or allyl group at an end, and the reactive group-containing carbonyl compound having at least a vinyl group and a carboxyl group or cyclic ester group, and having a solubility parameter calculated by Fedors' method of 10.0 to 12.5.

A method is provided for preparing electrically conductive polymer and cellulose nanocomposite particles and nanocomposite materials. Cellulose microparticles coated with a conductive polymer are added to an acid solution for initiating an acid hydrolysis reaction for a prescribed time interval to form conductive polymer coated cellulose nanoparticles. After quenching the acid hydrolysis reaction, the nanoparticles are separated to obtain a colloidal solution of conductive nanoparticles. The conductive nanoparticles may be subsequently formed into a solid nanocomposite material such as a conductive film. Transparent conductive films may be prepared by forming thin layers having a thickness on a micron or submicron scale.

Variations of this invention provide durable, impact-resistant structural coatings that have both dewetting and anti-icing properties. The coatings in some embodiments possess a self-similar structure that combines a low-cost matrix with two feature sizes that are tuned to affect the wetting of water and freezing of water on the surface. Dewetting and anti-icing performance is simultaneously achieved in a structural coating comprising multiple layers, wherein each layer includes (a) a continuous matrix; (b) discrete templates dispersed that promote surface roughness to inhibit wetting of water; and (c) nanoparticles that inhibit heterogeneous nucleation of water. These structural coatings utilize low-cost, lightweight, and environmentally benign materials that can be rapidly sprayed over large areas using convenient coating processes. The presence of multiple layers means that if the surface is damaged during use, freshly exposed surface will expose a coating identical to that which was removed, for extended lifetime.

Provided is an anti-fogging coated transparent article including an anti-fog film, the anti-fog film being a single-layer film containing a water-absorbent resin, a hydrophobic group, and a metal oxide component. The hydrophobic group is a chain or cyclic alkyl group having 1 to 30 carbon atoms, preferably a linear alkyl group having 6 to 14 carbon atoms, in which at least one hydrogen atom is optionally substituted by a fluorine atom. The hydrophobic group is bonded directly to a metal atom of the metal oxide component. The anti-fog film contains, for example, the metal oxide component in an amount of 0.01 to 60 parts by mass and the hydrophobic group in an amount of 0.05 to 10 parts by mass per 100 parts by mass of the water-absorbent resin. The water-absorbent resin is, for example, polyvinyl acetal.

A resin composition for use in a sliding member, which has higher seizing resistance while maintaining abrasion resistance. The sliding resin composition includes: a resin binder; a solid lubricant; and a protecting and reinforcing agent that is harder and brittler than the resin binder. As the protecting and reinforcing agent, aggregates of particles harder than the resin binder are used. The amount of the protecting and reinforcing agent contained is 1 vol. % or more but 20 vol. % or less of the entire sliding resin composition. The particles harder than the resin binder have an average particle diameter of 10 nm or more but 100 nm or less that is smaller than that of the solid lubricant.

A resin composition used for a sliding member to improve seizing resistance. The sliding resin composition includes: a resin binder; a solid lubricant; and aggregates of particles. A coupling force between the particles in the aggregates is smaller than a threshold stress of the resin binder so that the aggregates exposed at a surface of the resin binder are partially detached with a force smaller than the threshold stress of the resin binder. The aggregates of the particles harder than the resin binder are used as a protecting and reinforcing agent, and the amount of the particles contained in the sliding resin composition is 1 vol. % or more but 20 vol. % or less of the entire sliding resin composition. The particles harder than the resin binder have an average particle diameter of between 10 nm and 100 nm that is smaller than that of the solid lubricant.