A superhard material abrasive belt for grinding and polishing and a preparation method and use thereof are disclosed. The superhard material abrasive belt includes a lining cloth layer, an electroplating substrate, which is above the lining cloth layer, a grinding unit, which is on the electroplating substrate, a binder layer, which is between the electroplating substrate and the lining cloth layer, and a modified resin layer, which is arranged in the gap between the grinding units on the electroplating substrate.

The present invention relates to: a method for preparing a nanocomposite of an ionomer and a metal oxide acting as a radical scavenger; and a fuel cell comprising a nanocomposite prepared thereby and, more specifically, to: a method for preparing a highly-dispersible radical scavenger metal oxide-ionomer nanocomposite which can be redispersed to the size of nanoparticles in an aqueous alcohol solution or an ionomer solution; and a membrane electrode assembly and fuel cell comprising a nanocomposite prepared thereby.

A polishing liquid containing abrasive grains, a hydroxy acid, a polyol, a cationic compound, and a liquid medium, in which a zeta potential of the abrasive grains is positive and a weight average molecular weight of the cationic compound is less than 1000.

The present disclosure provides a coating-attached glass article having improved easy-to-clean properties. The provided coating-attached glass article includes a glass substrate and an easy-to-clean coating on the glass substrate. The coating includes cerium oxide, and a contact angle of water on a surface of the coating is 60° or more and 130° or less. The coating improves, for example, the ease of removal of dirt resulting from a water drop adhered to the surface. The glass substrate may be formed of a reinforced glass.

An object of the present invention is to provide a cured product which is suitable as a material for a layer of low refractive index in a multilayer diffractive optical element, can exhibit a desired chromatic aberration reducing effect over a near-infrared wavelength region to a shortwave infrared wavelength region in a case of being used in the multilayer diffractive optical element, and can exhibit high transmittance in this wavelength range; a curable resin composition suitable for obtaining this cured product; and a diffractive optical element and a multilayer diffractive optical element including this cured product. Provided are a curable resin composition which includes oxide nanoparticles including indium and cerium, a monofunctional or higher functional (meth)acrylate compound, and a dispersant; a cured product formed of the curable resin composition; a diffractive optical element and a multilayer diffractive optical element; and oxide nanoparticles used in this composition.

A polishing liquid includes abrasive grains containing at least one selected from the group consisting of cerium oxide and silicon oxide; a nitrogen-containing compound; and water. The nitrogen-containing compound contains nicotinamide. A polishing liquid set includes constituent components of a polishing liquid stored while being divided into a first liquid and a second liquid. A polishing method includes a step of polishing a surface to be polished by using a polishing liquid.

A polishing liquid includes abrasive grains containing at least one selected from the group consisting of cerium oxide and silicon oxide; a nitrogen-containing compound; and water. The nitrogen-containing compound contains nicotinamide. A polishing liquid set includes constituent components of a polishing liquid stored while being divided into a first liquid and a second liquid. A polishing method includes a step of polishing a surface to be polished by using a polishing liquid.

A polishing liquid containing abrasive grains, a hydroxy acid, a polyol, a cationic compound, and a liquid medium, in which a zeta potential of the abrasive grains is positive and a weight average molecular weight of the cationic compound is less than 1000.

A crosslinkable silicone elastomer composition is described that includes a heat-resistant additive. In particular, a crosslinkable silicone elastomer composition is described that includes a heat-resistant additive that is cerium (IV) neodecanoate.

In one aspect, the present invention is an organic-inorganic hybrid membrane of a cerium oxide and an organic fluorine compound, the organic-inorganic hybrid membrane satisfying the following (a), (b), and (c): (a) the visible-light transmittance is 70% or higher; (b) the UV transmittance at a wavelength of 380 nm is 60% or lower; and (c) the water contact angle of the surface of the organic-inorganic hybrid membrane is 80° or higher. In another aspect, the present invention is an organic-inorganic hybrid membrane of a cerium oxide and an organic fluorine compound, the organic-inorganic hybrid membrane satisfying the following (a), (b), and (c′): (a) the visible-light transmittance is 70% or higher; (b) the UV transmittance at a wavelength of 380 nm is 60% or lower; and (c′) the water contact angle of the surface of the organic-inorganic hybrid membrane is 90° or higher. The organic fluorine compound may include a fluorine-based resin. Also disclosed are a laminate and an article that include the organic-inorganic hybrid membrane.