A process is provided for the preparation of lacing resistant, titanium dioxide particles for use in photodurable thin film production. Said process involves dewatering titanium dioxide particles that have been encapsulated with a layer of amorphous alumina in continuous fashion at temperatures in excess of 100 C.

Provided are a nanocomposite body, a method of manufacturing the nanocomposite body, and a nanocomposite film including the nanocomposite body. The nanocomposite body includes: inorganic particles; a polymer matrix; and grafting polymer chains each of which includes a polyol structure, wherein the inorganic particles and the polymer matrix are linked by the grafting polymer chains.

A process is provided for the preparation of lacing resistant, titanium dioxide particles for use in photodurable thin film production. Said process involves dewatering titanium dioxide particles that have been encapsulated with a layer of amorphous alumina in continuous fashion at temperatures in excess of 100 C.

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.

To provide surface-modified metal oxide particles which are readily dispersed in a liquid fluorinated compound having a high fluorine atom content, and a method for producing them; a dispersion liquid having a high Abbe number and being excellent in transparency; and a curable composition from which a cured product having a high Abbe number and being excellent in transparency can be obtained, and its cured product.

Surface-modified metal oxide particles (A) comprising metal oxide particles having a refractive index of at least 1.9 and on their surface, specific fluoroalkyl group-containing surface-modifying groups and specific (meth)acryloyl group-containing surface-modifying groups; a dispersion liquid containing the surface-modified metal oxide particles (A) and a fluorinated compound which has a fluorine atom content of at least 20 mass % and which is liquid at 25 C., in a specific proportion; and a curable composition containing the surface-modified metal oxide particles (A), a compound (B) having a fluorine atom content of at least 20 mass % and having at least one (meth)acryloyl group, and a polymerization initiator (D), in a specific proportion.

Lithium titanate, Li.sub.4Ti.sub.5O.sub.12, particles containing surface hydroxyl groups are susceptible to unwanted gas generation (such as hydrogen) in the presence of water contamination when the particles are used as active anode electrode material in lithium-ion cells operating with an anhydrous liquid electrolyte. In accordance with this disclosure, the hydroxyl groups on the surfaces of the particles are reacted with one of a group of selected agents containing organic alkoxy groups to form hydrophobic moieties on the surfaces of the particles which effectively block water molecules from the surfaces of lithium titanate particles in the anode of the cell.

A titanium oxide particle includes a metal compound having a metal atom and a carbon atom and being bonded to a surface through an oxygen atom. The titanium oxide particle has absorption at a wavelength of 450 nm and a wavelength of 750 nm in a visible absorption spectrum and satisfies 0.03A0.3 where A represents a value of {(peak intensity of CO bond+peak intensity of CO bond)/(peak intensity of CC bond+peak intensity of CC bond)} in an XPS spectrum of a carbon 1s orbital.

Provided is a titanium dioxide pigment having minimal yellow color and minimal yellowing due to exposure, i.e., good yellowing resistance and high pigment performance such as brightness. Also provided is a titanium dioxide pigment which has a reduced amount of volatile moisture and which does not readily decompose when blended with a resin or the like. In the present invention, a compound including 0.05-20% by mass of phosphorus and an alkaline earth metal is present on surfaces of titanium dioxide particles having an average particle diameter of 0.15-1.0 m. The titanium dioxide pigment is manufactured by mixing an alkaline earth metal compound, a phosphate compound, and titanium dioxide particles having an average particle diameter of 0.15-1.0 m, and bonding the compound including phosphorus and an alkaline earth metal to the titanium dioxide particles.

Provided in one example herein is a liquid electrophotographic ink composition. The composition comprises: a carrier fluid comprising a polymer; ink particles each comprising a non-aqueous polymeric resin and pigment particles distributed in the polymeric resin; and a charge director. The pigment particles comprise a metal oxide and have a hydrophobic surface. The hydrophobic surface comprises at least one of the following: (i) nanoparticles attached to each of the pigment particles, the nanoparticles comprising at least one of an oxide, a phosphate, and a nitrate; (ii) a coating disposed over each of the pigment particles, the coating comprising at least one of an oxide, a phosphate, and a nitrate; and (iii) a coating disposed over each of the pigment particles, the coating comprising at least one of a polymer and an oligomer.

Titanium Dioxide and other pigments or powders processed by this present process are smoothly discharging, low dusting, agglomerated, compaction resistant, extremely friable, and fully dispersible, and the process for the production of smoothly discharging pigment or powder consists of gently blending in the presence of an air flow and an electrostatic charge where said pigment or powder is agglomerated with or without a treated or non-treated seed particle of the same or similar pigment whereas said pigment or powder in accordance with the invention yields a composition of substantially spherical particulate that has a pseudo-particle size of 0.1-5.0 mm in the form of smoothly discharging, low dusting, non-sticky, agglomerated, compaction resistant pigment or powder, in which said pigment or powder particles are 80% -99.9% by weight, pigment, and in which the pigments or powders are compatible with inks, paints and plastics, and can be readily dispersed and incorporated into the same.