Provided is an ink for use in electronic component production making use of screen printing, which is suitable for actually allowing fine lines with high precision to be drawn in screen printing, and for actually allowing successive screen printing operations to be performed. The ink for screen printing of the present invention includes surface-modified silver nanoparticles (A) and a solvent (B), and has a viscosity at a shear rate of 10 (1/s) and 25° C. of 60 Pa.Math.s or more. The surface-modified silver nanoparticles (A) each include a silver nanoparticle and an amine-containing protective agent coating the silver nanoparticle. The solvent (B) includes at least a terpene solvent. In solvent (B), a content of solvents having a boiling point of less than 130° C. is 20 wt % or less based on the total amount of solvents.

There are provided a coating composition being possible to form a cured film which has excellent transparency and weather resistance, and especially hardness. A coating composition obtained by which a silicon-containing substance as a component (M) and a silica colloidal particle having a primary particle diameter of 2 to 80 nm as a component (S) are mixed, and then the component (M) is hydrolyzed, and the resulting aqueous solution is subsequently mixed with a colloidal particle (C) wherein a component (F) is a modified metal oxide colloidal particle (C) having a primary particle diameter of 2 to 100 nm, which includes a metal oxide colloidal particle (A) having a primary particle diameter of 2 to 60 nm as a core, whose surface is coated with a coating (B) formed of an acidic oxide colloidal particle.

A slurry including at least a carbon black and a dispersion medium, wherein a concentration of the carbon black in the slurry is 5% by mass or more and 25% by mass or less, and wherein in a volume-based frequency distribution of particle size of the carbon black measured by a laser diffraction/scattering method, provided that a volume concentration of carbon black with a particle size of 0.6 μm or more is x (%), a volume concentration of carbon black with a particle size of 0.3 μm or more and less than 0.6 μm is y (%), and a volume concentration of carbon black having a particle size of less than 0.3 μm is 100−(x+y) (%), the slurry satisfies 10≤x≤70, 30≤y≤90, and 0≤100−(x+y)≤30.

An aqueous, particle-stabilized Pickering emulsion along with methods or processes for producing the same and particles produced therefrom.

A sol of inorganic oxide particles is stably dispersed in a hydrophilic organic solvent containing a hydrocarbon such as a paraffinic hydrocarbon or a naphthenic hydrocarbon. The sol contains a dispersion medium containing an organic solvent containing a C.sub.6-18 paraffinic hydrocarbon, a C.sub.6-18 naphthenic hydrocarbon, or a mixture of these, a C.sub.4-8 alcohol having a carbon chain with a carbon-carbon bond in the molecule in an amount of 0.1 to 5% by mass in the entire dispersion medium, and inorganic oxide particles having an average particle diameter of 5 to 200 nm as measured by dynamic light scattering as a dispersoid, wherein the inorganic oxide particles contain a C.sub.1-3 alkyl group bonded to a silicon atom and a C.sub.4-18 alkyl group. The paraffinic hydrocarbon is a normal paraffinic hydrocarbon or an isoparaffinic hydrocarbon. The naphthenic hydrocarbon is a saturated aliphatic cyclic hydrocarbon substitutable with a C.sub.1-10 alkyl group.

A method of producing an electromagnetic wave shielding sheet by which an electromagnetic wave shielding sheet having a high shielding property against an electromagnetic wave and having low cost is produced. The method of producing an electromagnetic wave shielding sheet includes; preparing a dispersion containing carbon nanotubes, an inorganic pigment, carboxymethyl cellulose, and water; and drying the dispersion. In the dispersion, a ratio of a mass of the inorganic pigment to a mass of the carbon nanotubes is 1/4 or more and 1 or less

The present disclosure relates to a dissimilar metal-doped cerium oxide including cerium oxide and a dissimilar metal other than the cerium oxide, in which a relationship of the following formula (1) is satisfied:

0.8≤|(D90)−(D10)|/D50≤2.0  (1) (in the formula (1), D10, D50, and D90 respectively represent the following: D10: particle diameter at which cumulative volume fraction is 10% D50: particle diameter at which cumulative volume fraction is 50% D90: particle diameter at which cumulative volume fraction is 90%).

Embodiments of the present disclosure describe a magnetic substrate including a cured magnetic ink and a cured polymer resin, wherein the cured magnetic ink includes a plurality of functionalized magnetic iron oxide nanoparticles and wherein the magnetic substrate is a freestanding magnetic substrate.

An alumina powder containing: a first alumina particle having average particle diameter from 0.1 μm to 1 μm; a second alumina particle having average particle diameter from 1 μm to 10 μm; and a third alumina particle having average particle diameter from 10 μm to 100 μm, wherein the particle diameters are measured using laser light diffraction scattering particle size distribution analyzer, average sphericity of first alumina particle having projected area equivalent circle diameter from 0.1 μm to 1 μm as determined by microscopy is from 0.80 to 0.98, and a ratio of D90/D10 of first alumina particle is from 2.0 to 8.0 wherein the ratio of D90/D10 is a ratio when particle diameter at cumulative value of 10% from fine particle side of cumulative particle size distribution on volume basis is D10 and particle diameter at cumulative value of 90% from fine particle side is D90.

The present invention concerns a process for preparing self-binding pigment particles from an aqueous suspension of calcium carbonate containing material, wherein an anionic binder and at least one cationic polymer are mixed with the suspension.