A coated powder comprises (a) particles, and (b) a coating on the surface of the particles including (1) silica moieties, (2) organo oxysilane moieties selected from the group consisting of mono-organo oxysilane moieties, bi-organo oxysilane moieties and tri-organo oxysilane moieties, and (3) poly(dialkyl)siloxane moieties. The amount by weight in SiO.sub.2 equivalents of the organo oxysilane moieties and the silica moieties is at least 0.0625% of the total coated powder weight per m.sup.2/g of the specific surface area of the particle to be coated.

A dispersion liquid contains a metal oxide particle surface-modified with a silane compound and a silicone compound, when a transmission spectrum of the metal oxide particles that are obtained by vacuum-drying the dispersion liquid is measured in a wavenumber range of 800 cm.sup.−1 or more and 3800 cm.sup.−1 or less with FT-IR, IA/IB≤3.5 is satisfied (IA is a spectrum value at 3,500 cm.sup.−1 and IB is a spectrum value at 1,100 cm.sup.−1), and, when the dispersion liquid and methyl phenyl silicone are mixed such that a mass ratio of a total mass of the metal oxide particles and the surface-modifying material to a mass of methyl phenyl silicone becomes 30:70 and the hydrophobic solvent is removed, a viscosity is 9 Pa.Math.s or less.

Provided is a charge-adjustment powder having an excellent ability to regulate a charging property on a surface of a target to be charge-adjusted within a certain range, and to maintain the applied charge. The charge-adjustment powder is formed with particles having titanium-niobium oxide on at least a part of a surface of a core, and the content of an alkali metal is set to be 20.0 mmol/kg or less based on the whole.

Provided are: composite particles having excellent oxidation resistance; and a method for producing composite particles. The composite particles are obtained by forming a composite of TiN and at least one of Al, Cr, and Nb. In the method for producing composite particles, a titanium powder and a powder of at least one of Al, Cr, and Nb are used as raw material powders and composite particles are produced using a gas phase method.

Provided are: composite particles having excellent oxidation resistance; and a method for producing composite particles. The composite particles are obtained by forming a composite of TiN and at least one of Al, Cr, and Nb. In the method for producing composite particles, a titanium powder and a powder of at least one of Al, Cr, and Nb are used as raw material powders and composite particles are produced using a gas phase method.

A process for preparing a composite containing submicron sized particles of metal oxide pigment and a natural-based organic compound is disclosed. The process includes a step of grinding a metal oxide pigment and a oligomeric and/or polymeric carbohydrate together by means of a ball mill, to obtain a pigment composite containing particles having a submicron granulometry and an outer surface partially or completely covered by the oligomeric and/or polymeric carbohydrate. A pigment composite including pigment particles having a mean hydrodynamic diameter smaller than 1 μm is also disclosed.

Disclosed is an infill for an artificial turf field, the infill comprising: from about 40 wt. % to about 60 wt. % of a polyvinyl chloride resin; from about 5 wt. % to about 30 wt. % of a plasticizer derived from a naturally occurring source; from about 2 wt. % to about 10 wt. % of a reflective pigment; from about 0.01 wt. % to about 0.1 wt. % of a blowing agent; and from about 5 wt. % to about 30 wt. % of a filler. The infill is pelletized and maintains the temperature of an artificial turf field, when disposed throughout the artificial turf field, at a temperature about 15° F. to about 25° F. less than a temperature of a comparative artificial turf under substantially similar ambient and environmental conditions, wherein a comparative infill of the comparative artificial turf consists essentially of crumbed rubber infill.

There has been demand for a titanium oxide organosol that has a high transparency and a high refractive index and that also exhibits an excellent viscosity stability over time. The rutile-type titanium oxide organosol according to the present invention comprises a silane coupling agent, a basic additive acting as a deflocculant, a water-insoluble solvent, and rutile-type titanium oxide particles that have been surface-treated with a hydrous oxide of at least one metal species selected from Zr, Ce, Sn, and Fe, the rutile-type titanium oxide organosol being characterized in that the Ti ratio contained in the colloidal particles in the rutile-type titanium oxide organosol is at least 60 mass% when calculated as the oxide, and the ratio of metal species at the colloidal particle surface derived from x-ray photoelectron spectroscopy is 20-50 mass%.

Provided is a method for producing a zirconia-coated titanium oxide fine particle dispersion which includes (1) a step of preparing a dispersion (1) of titanium oxide fine particles, (2) a step of adding, to the dispersion (1), 1 to 50 parts by mass of an aqueous peroxozirconic acid solution in terms of the mass of ZrO.sub.2 per 100 parts by mass of the titanium oxide fine particles, and then aging reaction fine particles (2a) obtained as a result of a reaction between the titanium oxide fine particles and the peroxozirconic acid to thereby obtain a dispersion (2) of a zirconia-coated titanium oxide fine particle precursor (2b), and (3) a step of adjusting the dispersion (2) to have a solid concentration of 0.01 to 10 mass % and then hydrothermally treating the resulting dispersion (2).

Provided is a method for producing a zirconia-coated titanium oxide fine particle dispersion which includes (1) a step of preparing a dispersion (1) of titanium oxide fine particles, (2) a step of adding, to the dispersion (1), 1 to 50 parts by mass of an aqueous peroxozirconic acid solution in terms of the mass of ZrO.sub.2 per 100 parts by mass of the titanium oxide fine particles, and then aging reaction fine particles (2a) obtained as a result of a reaction between the titanium oxide fine particles and the peroxozirconic acid to thereby obtain a dispersion (2) of a zirconia-coated titanium oxide fine particle precursor (2b), and (3) a step of adjusting the dispersion (2) to have a solid concentration of 0.01 to 10 mass % and then hydrothermally treating the resulting dispersion (2).