An infrared reflecting fiber includes 76.0 parts by weight to 88.5 parts by weight of a carrier, 1.8 parts by weight to 4.0 parts by weight of an infrared reflecting composition, 2.5 parts by weight to 7.5 parts by weight of a titanium dioxide containing composition, and 6.0 parts by weight to 16.0 parts by weight of a color adjusting composition. The carrier includes polyethylene terephthalate (PET). When a content of 5.0 wt % to 7.5 wt % of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between 61% and 70%.

The present invention relates to the processing of natural titanium-containing feedstock, mainly ilmenite concentrate, including ilmenite ores with a low TiO.sub.2 content, into products with high added value without generating any liquid or solid waste. The method according to the invention comprises the following stages: digesting ilmenite concentrate, processing the solid residue following ilmenite concentrate digestion, hydrolysis of titanium oxychloride, washing titanium oxides/hydroxides precipitate from impurities, calcination of titanium oxides/hydroxides precipitate, precipitation of iron hydroxides to obtain black, red and yellow iron oxide pigments, processing the mother liquor containing calcium chloride, regeneration of hydrogen chloride from ammonium chloride solution, obtaining ammonium sulfate and ammonium sulfate crystallization, obtaining crystalline ammonium chloride. The resulting products are pigments, pigment fillers, mineral fertilizers, construction materials, raw materials for the production of metals, and other products; they are used in various fields of application such as paint and coatings industry, pulp and paper industry, in the production of plastics, in metallurgy, in agricultural, construction industries and others.

An infrared reflecting fiber includes 76.0 parts by weight to 88.5 parts by weight of a carrier, 1.8 parts by weight to 4.0 parts by weight of an infrared reflecting composition, 2.5 parts by weight to 7.5 parts by weight of a titanium dioxide containing composition, and 6.0 parts by weight to 16.0 parts by weight of a color adjusting composition. The carrier includes polyethylene terephthalate (PET). When a content of 5.0 wt % to 7.5 wt % of the infrared reflecting composition and a balance of the carrier are mixed together to form a first fiber, a maximum infrared reflectivity of the first fiber is between 61% and 70%.

Hollow structure particles which contain titanium oxide and silica, in which the crystal type of the titanium oxide is rutile type; a method for producing the hollow structure particles; a white ink which contains these hollow structure particles as a coloring agent; use of the white ink in inkjet recording; and an inkjet recording method which uses the white ink.

A reflective particulate material includes a particulate substrate having high total solar reflectance, bulk and apparent densities and toughness, and a low dust index. The reflective particulate can have a total solar reflectance of 80% to 87%, a toughness of 1% or fewer fines, an apparent density of 2.75 g/cm.sup.3 or greater, and a dust index of 1 or lower. A method of manufacturing the reflective particulate material includes preparing a slurry of the particulate substrate, spray drying the slurry to form a spray dried particulate, crushing the spray dried particulate to form a crushed particulate, and heating/calcining the crushed particulate. The heated, crushed particulate may further be coated to form a coated roofing granule.

Disclosed are a glossy pigment having a hollow structure and a method for producing the same. The glossy pigment having a hollow structure according to the present invention comprises: a hollow which penetrates through the center of the inside thereof; and a metal oxide coating layer which covers a part or all of the hollow, wherein the metal oxide coating layer has a hollow structure having a thickness of 0.1-3 m.

A titanium dioxide powder has excellent red light-selective transmission function while maintaining hiding power. A cosmetic formulated therewith provides a natural finish and makes skin irregularities (pores) inconspicuous while having good covering properties. A titanium dioxide powder is obtained by firing titanium dioxide having acicular projections on the particle surface at 500-800 C. The titanium dioxide powder for the cosmetic is characterized by an apparent average particle size is 100-500 nm, an average crystallite size measured by X-ray diffraction is 15-30 nm, and a specific surface area is 10-30 m2/g.

Hollow structure particles which contain titanium oxide and silica, in which the crystal type of the titanium oxide is rutile type; a method for producing the hollow structure particles; a white ink which contains these hollow structure particles as a coloring agent; use of the white ink in inkjet recording; and an inkjet recording method which uses the white ink.

A reflective particulate material includes a particulate substrate having high total solar reflectance, bulk and apparent densities and toughness, and a low dust index. The reflective particulate can have a total solar reflectance of 80% to 87%, a toughness of 1% or fewer fines, an apparent density of 2.75 g/cm.sup.3 or greater, and a dust index of 1 or lower. A method of manufacturing the reflective particulate material includes preparing a slurry of the particulate substrate, spray drying the slurry to form a spray dried particulate, crushing the spray dried particulate to form a crushed particulate, and heating/calcining the crushed particulate. The heated, crushed particulate may further be coated to form a coated roofing granule.

A titanium dioxide powder has excellent red light-selective transmission function while maintaining hiding power. A cosmetic formulated therewith provides a natural finish and makes skin irregularities (pores) inconspicuous while having good covering properties. A titanium dioxide powder is obtained by firing titanium dioxide having acicular projections on the particle surface at 500-800 C. The titanium dioxide powder for the cosmetic is characterized by an apparent average particle size is 100-500 nm, an average crystallite size measured by X-ray diffraction is 15-30 nm, and a specific surface area is 10-30 m2/g.