The present invention provides compositions with increased color shade stability comprising organic pigments and TiO.sub.2. The combination of specific ingredients disclosed herein prevents the color migration often associated with organic pigments including azo based dyes and lakes.

The invention relates to a compound (1) comprising at least 50% by weight of a functional agent, characterized in that it also comprises a waxy matrix (3) having at least one organosilicon material, which organosilicon material forms the greater part by weight of said waxy matrix (3) and preferable the entirety thereof, within which said functional agent, formed by solid particles (3), is dispersed. Said compound (1) is solid at room temperature and intended to be dispersed by fluidization and/or solubilization within a cosmetic and/or dermatological composition of integrating said functional agent therein. The invention also relates to the formulation of cosmetic and/or dermatological compositions.

Use of a particulate mineral having a coating of one or more rosin acid(s) and/or one or more derivative(s) thereof as a pitch and/or stickies control agent in a composition comprising cellulosic pulp, a method of reducing dissolved and/or colloidal pitch and/or stickies in cellulosic pulp using said coated particulate minerals, said coated particulate mineral, a method of making said coated particulate mineral, a composition comprising cellulosic pulp and said coated particulate mineral and paper comprising said coated particulate mineral.

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 coating compositions, comprising i) single or mixed metal oxide nanoparticles, wherein the volume average diameter (D.sub.v50) of the metal oxide nanoparticles is in the range of 1 to 20 nm; the nanoparticles comprise at least one volatile surface-modifying compound selected from alcohols, β-diketones, or salts thereof; carboxylic acids and β-ketoesters and Ge mixtures thereof, wherein the total amount of volatile surface-modifying compounds is at least 5% by weight, preferably at least 10% by weight based on the amount of metal oxide nano-particles, and ii) a solvent, coatings obtained therefrom and the use of the comositions for coating surface relief micro- and nanostructures (e.g. holograms), manufacturing of optical waveguides, solar panels, light outcoupling layers for display and lighting devices and anti-reflection coatings. Coatings obtained from the coating composition have a high refractive index and holograms are bright and visible from any angle, when the coating compositions are applied to them.

A method of making surface-functionalized transition metal oxide nanoparticles comprises: providing a sol comprising transition metal oxide nanoparticles dispersed in an aqueous liquid medium having a pH of less than or equal to 3.5, combining the sol with an extractant composition comprising at least one carboxylic acid and at least one organic amine, and a water-immiscible organic solvent, and separating at least a portion of the organic phase from the aqueous phase and then at least partially removing the water-immiscible organic solvent. The carboxylic acid has from 6 to 30 atoms. The organic amine is represented by the formula R2R3NH, wherein R2 is a hydrocarbyl group having from 6 to 30 carbon atoms, and R3 is H or an alkyl group having from 1 to 4 carbon atoms. The at least one organic amine is present in an amount sufficient raise the pH to at least 5, thereby forming discrete separable aqueous and organic phases. A surface-modified nanoparticle composition, a curable composition and an article comprising the same are also disclosed.

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.

A particulate TiO.sub.2 includes a TiO.sub.2 content of at least 99 wt.-%, an anatase content of at least 98 wt.-%, a primary crystallite size X.sub.50 of at least 200 nm, a numerical fraction of TiO.sub.2 with a primary crystallite size of at most 100 nm of at most 10%, a specific surface area of at most 8 m.sup.2/g as determined by BET measurements, 1200 ppm to 2400 ppm of alkali with respect to the TiO.sub.2 content, an Al content of 1 ppm to 1000 ppm, expressed as Al and with respect to the TiO.sub.2 content, a weight ratio of Al.sub.2O.sub.3 to Nb.sub.2O.sub.5 of from 0.17 to 0.74, and 0.1 wt.-% to 0.3 wt.-% of P, expressed as phosphorus and with respect to the TiO.sub.2 content.

The present invention relates to surface functionalized titanium dioxide nanoparticles, a method for its production, a coating composition, comprising the surface functionalized titanium dioxide nanoparticles and the use of the coating composition for coating holo-grams, wave guides and solar panels. Holograms are bright and visible from any angle, when printed with the coating composition, comprising the surface functionalized tita-nium dioxide nanoparticles.

In producing titanium oxide containing rutile-type crystals by adding hydrochloric acid to an aqueous dispersion of an alkali metal titanate, sulfurous acid, disulfurous acid, sulfuric acid or a salt thereof is added. Thus, there is provided a titanium oxide powder which is doped with bivalent sulfur atoms (S.sup.2−) and in which a ratio (I.sub.A/I.sub.R) of a peak intensity (I.sub.A) of anatase-type crystals to a peak intensity (I.sub.R) of rutile-type crystals as measured by X-ray diffractometry is 0.1 or less. Moreover, a cosmetic is provided by dispersing the titanium oxide powder in a dispersion medium. Thus, bluish color derived from Rayleigh scattering is negated, providing a dispersion, particularly a cosmetic, with excellent transparency and color tone.