Abstract: An iron-based powder composition including at least an iron-based powder, and a minor amount of a machinability enhancing additive, said additive including at least one titanate compound. The titanate compound being according to the following formula; MxO*nTiO2, wherein x can be 1 or 2 and n is a number from at least 1 and below 20, preferably below 10. M is an alkali metal such as Li, Na, K or an alkaline earth metal such as Mg, Ca, Ba, or combinations thereof. Further, the use of the machinability enhancing additive and a method for producing an iron-based sintered component for easy machining.

Abstract: A method for coating the surface of a substrate, such as inorganic particles, with a metal oxide. A suspension is formed containing the substrate, a polyvalent anion and a metal ion where the molar ratio of the polyvalent anion to the metal ion is greater than three and the metal ion is precipitated onto the substrate as a metal oxide. Preferably, the method is used to coat titanium dioxide pigment particles with aluminum oxide.

Abstract: The disclosure provides a paper slurry comprising a treated inorganic particle having reduced photoactivity and improved anti-microbial properties, wherein the treated inorganic pigment comprises: an inorganic core particle; a first treatment of a silicon compound, wherein the silicon compound is added in a single step; and a second treatment comprising a co-precipitated zinc oxide and alumina.

Abstract: Hydrophilic coating compositions and methods to make and use the compositions are disclosed. The compositions include a photocatalytic pigment material made up of an inorganic pigment and a monomeric anti-oxidants and free radical scavenger that is contacted to the surface of the inorganic pigment.

Abstract: A coating, ink, or article containing a pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III).

Abstract: A compound or a pigment comprising a compound where there is simultaneous substitution of more or more elements onto both the A and B sites of a pyrochlore lattice or a lattice related to a pyrochlore. The pigment comprises a compound with the formula of AyA?y?BxB?x?Zp. Elements A and A? have a valence of 1, 2, or 3; and are selected from the elements of groups 1, 2, 12, 13, 14, 15, and the first row of transition metals, excluding H, Pb, Cd, Hg, N, As, and Tl. Elements B and B? have a valence of 3, 4, 5, or 6; and are selected from the elements of the first, second, or third row of transition metals, groups 13, 14, and 15, excluding V, C, Pb, and Tl. Element Z is selected from O, F, N, a chalcogen, S, Se, hydroxide ion, and mixtures thereof.

Abstract: The invention relates to rutile titanium dioxide pigment particles that are capable of reflecting infrared radiation to a high degree and also display pigmenting properties, as well as a method for their manufacture. The particles have a mean particle size of 0.4 to 1.0 ?m and are doped with zinc and potassium, but not with aluminium. Preferably, the particles have a compact particle form with a preferred height:width ratio of 1.5:1. The particles are preferably manufactured by the familiar sulphate process for manufacturing titanium dioxide, and are optionally subjected to inorganic and/or organic post-treatment following calcining. Preferably, the rutile titanium dioxide particles are suitable for manufacturing heat-insulating paints, coatings or plastics as well as for instance plasters or paving stones.

Abstract: A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.

Abstract: The invention relates to a printed document of value having at least one authenticity feature in the form of a luminescent substance based on doped host lattices. The host lattice has a strong crystal field and is doped with at least one chromophore with the electron configuration (3d)2.

Abstract: The present invention relates to effect pigments based on uncoated or coated flake-form substrates having an outer coating comprising a) TiO2 and b) Al2O3, MgO and/or CaO and c) SiO2 and d) ZnO and/or e) at least one mixed oxide of the elements mentioned under a) to d), and to the use thereof, inter alia in paints, coatings, printing inks, plastics and cosmetic formulations.

Abstract: Disclosed is a method for producing a polymer-based microfluidic device, including: forming a microstructure on a lower polymer matrix; coating the lower polymer matrix with TiO2 to perform patterning of TiO2; bonding the lower polymer matrix with an upper polymer matrix; and radiating UV lights thereto to convert TiO2-coated regions into hydrophilic regions. Disclosed also is a polymer-based microfluidic device obtained by the method. The method enables development of a microfluidic device having high stability and long-term durability.

Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.

Abstract: A complex powder comprising an adsorption site and operation site, wherein said adsorption site attracts or adsorbs a specific enzyme, wherein said operation site inhibits or activates said enzyme, and wherein each of the both sites are appeared on the surface of the powder. In the complex powder described above, it is preferable that ?-potential of the adsorption site at the pH employed is negative value, wherein said adsorption site attracts or adsorbs the specific enzyme whose ?-potential is positive value, and wherein said adsorption site inhibits or activates said specific enzyme. And it is preferable that said adsorption site has ?-potential at pH7.5 of ?10 mV or below. In the complex powder described above, it is preferable that said specific enzyme is a plasminogen activator, and the operation site inhibits said plasminogen activator. The complex powder described above can be used as an external composition for improving a rough skin and an external composition for a sensitive skin.

Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present effect pigments may be used in cosmetic and industrial applications.

Abstract: A multilayer effect pigment includes a transparent substrate, a layer of high refractive index material on the substrate, and alternating layers of low refractive index and high refractive index materials on the first layer, the total number of layers being an odd number of at least three, all adjacent layers differing in refractive index by at least about 0.2 and at least one of the layers having an optical thickness which is different from all of the other layers. The resulting multilayer effect pigment is not a quarter-wave stack. The present multilayer effect pigment may be used in cosmetics or personal care products.

Abstract: Embodiments of the present invention provide polymer matrix nanocomposites reinforced with nano-scale materials such as nanoparticles and carbon nanotubes and methods of fabricating. The nanomaterials are provided within relatively low weight fractions, for example in the range of approximately 0.01 to about 0.4% by weight and distributed within the matrix by a magnetic mixing procedure to provide substantially uniform reinforcement of the nanocomposites. Advantageously, these nanocomposites provide significantly enhanced tensile strength, strain to failure, and fracture toughness over corresponding neat matrices.

Abstract: A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.

Abstract: A pigment of empirical composition (TiO2)a(ZnO)b(SnO)c(SnO2)d(RExOy)e(AEO)f(MuOv)g wherein RE is a metal from transition group 3 or a rare earth metal, AE is an alkaline earth metal, and M is any other metal, where a=0.8-3; b=0.5-1.3; c=0.5-1.3; d=0-0.5; e=0-0.3; f=0-0.3; and g=0-0.1, and e+f?0.01. Preferably RE is selected from the elements Y, La, Ce, and Pr. The pigments are used as colorants for coloring paints, inks, plastics, and rubber.

Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.

Abstract: In various embodiments, a pigment composition is provided comprising a base particle and a dispersing agent, the dispersing agent comprising a salt and/or ester of: (i) an amine, alcohol, and/or alkanol amine and (ii) a polyprotic acid, wherein the mole ratio of the amine, alcohol, and/or alkanol amine to the polyprotic acid is greater than 3:1. In various embodiments, the pigments have improved stability, hiding power, tint strength, and/or gloss.

Abstract: The present invention relates to pigment granules which contain inorganic filter aids and a process for the production thereof and their use for colouring lime- and/or cement-bound building materials, asphalt, paints, finishes, paper or plastics.

Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.

Abstract: A pigment of empirical composition (TiO2)a(ZnO)b(SnO)c(SnO2)d(RExOy)e(AEO)f(MuOv)g wherein RE is a metal from transition group 3 or a rare earth metal, AE is an alkaline earth metal, and M is any other metal, where a=0.8-3; b=0.5-1.3; c=0.5-1.3; d=0-0.5; e=0-0.3; f=0-0.3; and g=0-0.1, and e+f?0.01. Preferably RE is selected from the elements Y, La, Ce, and Pr. The pigments are used as colorants for coloring paints, inks, plastics, and rubber.

Abstract: A method for coloring powders is provided that includes mixing a base powder and non-incorporated pigments. A colored powder composition having a base powder particle and at least a partial shell of non-incorporated pigments about the base powder particle is also provided. Articles having a coating of the colored powder composition are also provided.

Abstract: An improved pigment spacing composition and method of manufacture. A coating composition wherein the pigment particles are spaced more uniformly resulting in improved coating properties. In another embodiment, the present invention relates to a composition having nanoparticles interacting with pigmentary titanium dioxide to provide for more uniform spacing of the titanium dioxide.

Abstract: The present invention relates to photostabilised effect pigments in which one or more calcined and vanadium-containing oxide layers, alone or mixed with sulfates, borates or phosphates, have been applied to a substrate, to a process for the preparation thereof, and to the use thereof in plastics, paints, coatings, printing inks, cosmetics, films, in security printing, for laser marking, in thermal protection or for colouring seed.

Abstract: The present invention relates to interference pigments on the basis of multiply coated, platelet-shaped substrates which comprise at least one layer sequence comprising: (A) a metal oxide coating having a refractive index n?2.0, (B) a colorless metal oxide or fluoride coating having a refractive index n?1.8, (C) a nonabsorbing metal oxide coating of high refractive index, and, wherein the pigment further comprises (D) an oxide of calcium, magnesium, or zinc. The present pigment may be used in paints, printing inks, and for producing counterfeit-protected documents of value, such as bank notes, cheques, cheque cards, credit cards, identity cards, etc.

Abstract: A pearlescent pigment comprising a substrate and a first layer, wherein the first layer comprises iron oxide, wherein the iron has from about 1% to about 30% Fe(II) and from about 70% to about 99% Fe(III). A process for making these pearlescent pigment, comprise reducing a metal oxide substrate with a hydrogen source in the presence of a noble metal catalyst in a liquid medium. The pigments may be used in a variety of applications including cosmetics, plastics, automotive or architectural coatings.

Abstract: An electroconductive compound in a flake form, characterized in that it comprises a titanium oxide which has an average long diameter of 1 to 100 ?m and an average thickness of 0.01 to 1.5 ?m, and contains potassium in an amount of 0.3 to 5 wt % in terms of potassium oxide (K2O) and, formed on the surface thereof, a first electroconductive layer comprising a tin oxide containing antimony and, formed on the first electroconductive layer, a second electroconductive layer comprising a tin oxide.

Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.

Abstract: A particulate hydrous mineral suitable for use as an opacifying pigment, filler or extender has a shape factor which is greater than S, where S is defined by Equation 1 as follows: S=(d50/0.036)+20  Equation 1; where d50 is the mean particle size of the particles of the mineral measured in microns. The particulate mineral is preferably a kaolin, which is particularly suitable for use in aqueous matt paint compositions.

Abstract: A filler comprising a substantially amorphous cluster comprising non-heavy metal oxide particles and heavy metal oxide. The filler can be mixed into a hardenable resin to provide radiopaque dental materials having desirable strength and aesthetic character.

Abstract: Multilayer interference pigment consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the difference in the refractive indices being at least 0.1, which is obtainable by alternate coating of the transparent carrier material with a metal oxide of high refractive index and with a metal oxide of low refractive index in a wet process by hydrolysis of the corresponding water-soluble metal compounds, separation, drying and, if desired, calcination of the resulting pigment.

Abstract: Platy potassium titanate having a mean major diameter of 1-100 &mgr;m and a mean aspect ratio of 3-500 and obtainable by subjecting magnesium or lithium potassium titanate to an acid treatment to thereby prepare platy titanate, immersing the platy titanate in a potassium hydroxide solution and then subjecting it to calcination.

Abstract: The titanium dioxide pigment of this invention has on the titanium dioxide particle surface a coating layer comprising a polyhydric alcohol and a hydrolysis product of an aminosilane compound, has a dispersibility of not more than 20 kg/cm2 as judged in terms of resin pressure increase, and is excellent in hydrophobicity and dispersibility. The pigment is useful as a coloring agent for plastics which requires good lacing resistance and dispersibility.

Abstract: The titanium dioxide pigment of the present invention comprises titanium dioxide particles, the coating layer containing the aluminum phosphate compound and the coating layer containing the hydrolyzate of the organosilane compound, on the surface of the particles, in which a difference in water content between 100° C. and 300° C., determined by the Karl Fischer method, is not greater than 1500 ppm, and is thus excellent in light fastness, hydrophobicity and dispersibility. In particular, the titanium dioxide pigment of the invention is extremely advantageous as a colorant for plastics, which requires light fastness (resistance to discoloration) lacing resistance and dispersibility, to a high degree.

Abstract: The present invention is directed to a process for producing a master batch of pigment, comprising mixing a pigment having a high aspect ratio, embedded in a material increasing bulk density of the pigment, with a plastic so as to produce a dispersion of pigment and plastic.

Abstract: A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers on opposing sides of the reflector layer. The resulting core flake section is a very thin three-layered structure that exhibits a uniaxial compressive strength much greater than a corresponding uniaxial tensile strength. This structure provides the benefits of rigidity and brittle fracture during manufacturing and application processes, which ultimately provides favorable planar and specular reflectance characteristics for the pigment in the visible wavelength range. A variety of outer coating layers can be formed around the core flake sections, such as various dielectric and absorber layers having thicknesses dependent upon the desired optical characteristics of the pigment.

Abstract: A flake-based pigment is provided having improved specular reflectance characteristics in the visible wavelength range. The flake-based pigment has a plurality of core flake sections each formed of a central reflector layer and dielectric support layers on opposing sides of the reflector layer. The resulting core flake section is a very thin three-layered structure that exhibits a uniaxial compressive strength much greater than a corresponding uniaxial tensile strength. This structure provides the benefits of rigidity and brittle fracture during manufacturing and application processes, which ultimately provides favorable planar and specular reflectance characteristics for the pigment in the visible wavelength range. A variety of outer coating layers can be formed around the core flake sections, such as various dielectric and absorber layers having thicknesses dependent upon the desired optical characteristics of the pigment.

Abstract: A process is disclosed for coloring building materials with inorganic pigments in the form of microgranulates. The granulates comprise one or more pigments and one or more compounds selected from boron, aluminum, silicon, titanium, zinc and tin.

Abstract: The iron oxide platelets comprise at least one layer packet comprising A) a colorless coating having a refractive index n≦1.8, and B) a colorless coating having a refractive index n≧2.0.

Abstract: The invention features in particular white mineral pigments in the form of fine particles having increased stability against solar ultraviolet radiation, characterised in that the pigment particles are coated with an oxidising agent. It is useful in the formulation of white paints for space vehicles.

Abstract: Purple pigments according to the invention based on a stovable support material, in particular a glass frit, having a coat applied by coprecipitation of an oxide hydrate of one or more elements from the range comprising Al, Si, Sn, Pb, Ti, Nb, Ta, Sc, Y, La, Ce and Zn and a water-insoluble gold compound or colloidal gold are distinguished from prior art pigments of a similar composition by improved color stability in high temperature firing. The pigments are obtainable in the aqueous phase by coprecipitation of an oxide hydrate and a gold compound or colloidal gold in the presence of a support material and in the absence of a reducing agent. Pigments containing gold compounds assume a purple color on heat treatment or by chemical reduction. Preferred pigments containing gold compounds, which may directly be used as decorative colorants, conveniently develop their color during firing of the decoration.

Abstract: Disclosed are topical compositions which provide good coverage of skin imperfections, e.g., pores and uneven skin tone, while retaining a natural skin appearance. The compositions contain a particulate material having a refractive index of at least about 2, e.g., TiO.sub.2.

Abstract: The invention provides a method for producing colorful inorganic pigments, which comprise complex oxides of various elements, which have good weather resistance and good heat resistance, and which are widely used in colorants for ceramics and in colorants for coatings and plastics. In the method, the composite oxides are sintered at a low temperature for a short period of time to give homogeneous and well colored pigments. Under the sintering conditions, the composite oxides are not sintered excessively. The grinding step in the method is simplified.

Abstract: The invention relates to granules of inorganic pigments, a process for their production using several auxiliary substances by compacting and their use in many technical fields.

Abstract: A sunscreen composition containing a synergic mixture of titanium and/or zinc oxide particles, characterized in that said particles are incorporated in paste-forming oils and/or esters and/or fatty alcohols and/or ethers selected so as to provide a wetting point of the incorporated titanium oxide particles and of the incorporated zinc oxide particles lower than about 5 and a flow point of said incorporatedparticles lower than about 30. The invention also provides a method for preparing said composition and the use thereof for protecting the skin against ultraviolet radiation and for maintaining the monocrystalline dispersion of minerals in the formulation and on the skin.

Abstract: A stabilised aqueous dispersion of particulate zinc oxide comprises water, a stabilising agent and zinc oxide, the particles of which are coated with dense amorphous silica. Useful stabilising agents include cellulose ethers which contain quaternary ammonium groups and polyalkylene glycols. The dispersions have excellent stability at high concentrations of zinc oxide and are useful for preparing sunscreen formulations, cosmetics and veterinary products.

Abstract: An ultrafine titanium dioxide powder is disclosed that can be produced by hydrothermal treating an amino titanium oxalate composition. Ultrafine titanium dioxide powders are useful in cosmetic and other applications for controlling exposure to ultraviolet (UV) light.

Abstract: Colored pigments are provided from the green-yellow to red spectrum based on oxide-nitrides with two or three different cations Q, R and S in the crystal lattice, wherein the nitrogen to oxygen atomic ratio is determinative for the color. These pigments crystallise in the pyrochlore, spinel or elpasolite structure. Pigments in the perovskite are as provided with increased color brilliance. The color of the pigments can be adjusted in a wide range of the color spectrum during their preparation within a substance class with the cations Q, R and S and while retaining the crystal structure, by increasing or lowering the atomic ratio N to O in the oxide-nitride and bringing about the required charge balancing by replacing an equivalent quantity of the cation Q with the valency q by a cation R with the valency q+1.