Abstract: The present invention relates to a new Inorganic Blue pigments from Cobalt doped Magnesium having Transition Element Oxides and a process for the preparing the same. The present invention more particularly relates to the development of blue pigments, comprising oxides of alkaline earth, and transition metals of the general formula Mg1-xCoxWO4 (x=0.1 to 0.5), Mg1-xCoxN-bO6 (x=0.1 to 0.5), and Mg1-xCoxTiO3 (x=0.1 to 0.5) and well suited for coloring applications of a wide variety of substrates for example paints, varnishes, plastics, ceramics etc. Raw materials such as MgO, CoO and one of WO3, TiO2, Nb2O5 and are weighted in the stoichiometric ratio and calcined in the range 1100-1300° C. for 6-12 hrs duration in air atmosphere. The well ground calcined powders were used for characterization of the pigments. The phase purity and optical properties of the prepared pigments were investigated.

Abstract: The present invention relates to intensely colored and/or optically variable pigments which have a flake-form transparent or semitransparent electrically conductive core and at least one coloring dielectric layer surrounding the core, to a process for the preparation of such pigments, and to the use thereof.

Abstract: A method for manufacturing a fatty acid metal salt particle includes forming a coating layer including a fatty acid metal salt on a surface of a core material particle in supercritical carbon dioxide.

Abstract: Under the presence of at least one out of copper, manganese, nickel, cobalt, iron, zinc, and compounds thereof, a tetravalent titanium salt solution and a basic solution are reacted together to form a hydroxide of titanium and the above metal, and then the titanium hydroxide is peroxidated with an oxidizing agent to manufacture an aqueous liquid or dispersion having titania-metal composite having peroxy groups, and not having a photocatalytic activity fine particles dispersed therein, wherein the titania-metal composite includes particles of at least one of elemental copper, manganese, nickel, cobalt, iron, zinc and compounds thereof; using this to form a coating film, a drop in decorativeness of color due to fading or discoloration of a coating material, a printed article, a building material, a fiber, an organic polymer resin product or the like can be prevented, and moreover surface anti-soiling and hydrophilic properties can be realized.

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: A silica-containing composition is disclosed. The composition comprises a compound having the following formula: (SiO2)x(OH)yMzSaF.B. M comprises at least one metal or metalloid cation S is a sulfur-based species. F optionally exists and F is at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of about 0.01 to about 100%. The molar ratio of y/x is equal to about 0.01 to about 0.5, the molar ratio of x/z is equal to about 0.5 to about 300 or from about 0.5 to about 100, and the molar ratio of a/z is about 0.5 to about 5. B is a hygroscopic solid at a water to solid molar ratio of 0.1-6 and preferably comprises at least one alkaline earth oxide or lanthanide oxide.

Abstract: A silica-containing composition is disclosed. The composition comprises a compound having the following formula: (SiO2)x(OH)yMzSaF. M comprises at least one metal or metalloid cation S is a sulfur-based species optionally exists and F is at least one of the following: a functionalized organosilane, a sulfur-containing organosilane, an amine-containing organosilane, and an alkyl-containing organosilane at a surface area coverage of about 0.01 to about 100%. The molar ratio of y/x is equal to about 0.01 to about 0.5, the molar ratio of x/z is equal to about 0.5 to about 300 or from about 0.5 to about 100, and the molar ratio of a/z is about 0.5 to about 5.

Abstract: A tinting system for producing a defined number of shades of a paint ready for use characterized by: (a) a dye set, (b) a color identification means, and (c) plurality of metering means for accommodating a shade component, and a brightening component. Each metering means being designed to manually meter the respective dye component and to exactly reproduce the number of shades defined by the color identification means.

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: The present invention relates to pigment granules and to a process for the preparation thereof and their use.

Abstract: The present disclosure relates to a process for making a decorative base paper for a paper laminate comprising impregnating a base paper with a pigment mixture of titanium dioxide and water wherein the titanium dioxide pigment is made by treating a mixture of titanium dioxide pigment and water with a source of phosphorus and a source of aluminum; drying the treated mixture to form a treated pigment, the treated pigment having surface hydroxyl groups; and removing a major proportion of the surface hydroxyl groups of the treated pigment. Preferably the surface hydroxyl groups are removed by thermal treatment, for example at temperatures ranging from 300° C. to 800° C. The source of phosphorus is typically phosphoric acid and the source of aluminum is typically sodium aluminate. The pigment can be characterized by an isoelectric point which is greater than pH 6 and a negative zeta potential of at least 20 mV at a pH of 7.5 or more and wherein the pigment has improved light fastness.

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: Flame-hydrolytically produced titanium dioxide powder that is present in the form of aggregates of primary particles, and has a BET surface of 20 to 200 m²/g, a half width (HW) [nm] of the primary particle distribution of HW = a×BETf where a = 670×10?9 m³/g and ?1.3 ≤ f ≤ ?1.0 and the proportion of particles with a diameter of more than 45 &mgr;m lies in a range from 0.0001 to 0.05 wt. %. The powder is produced by a process in which a titanium halide is vapourised at temperatures of less than 200°C.

Abstract: Processes for altering surface properties of pigment particles are provided. The processes include coating the particles with ionic natural polysaccharides or ionic derivatives of natural polysaccharides, providing enhanced properties.

Abstract: The present invention relates to UV-stabilised particles which are distinguished by the fact that they reflect or absorb light having wavelengths of from 290 to 500 nm. The invention furthermore relates to a process for the production of the particles according to the invention and to the use thereof in surface coatings, water-borne coatings, powder coatings, paints, printing inks, security printing inks, plastics, concrete, in cosmetic formulations, in agricultural sheeting and tent awnings, for the laser marking of papers and plastics, as light protection, and for the preparation of pigment compositions and dry preparations.

Abstract: The present invention relates to surface-modified effect pigments based on flake-form substrates which are distinguished by the fact that they are sheathed with one or more layers of immobilized LCST and/or UCST polymers. The invention furthermore relates to a process for the production of the surface-modified effect pigments and to the use thereof in surface coatings, water-borne coatings, powder coatings, paints, printing inks, security printing inks, plastics, concrete, in cosmetic formulations, in agricultural sheeting and tarpaulins, for the laser marking of papers and plastics, as light protection, as pigment for corrosion protection and for the preparation of pigment compositions and dry preparations.

Abstract: The present invention is directed to pigment compositions, thick film black pigment compositions, conductive single layer thick film compositions, black electrodes made from such black conductive compositions and methods of forming such electrodes, and to the uses of such compositions, electrodes, and methods in flat panel display applications, including alternating-current plasma display panel devices (AC PDP).

Abstract: Coated titanium dioxide pigment having high UV absorption properties and use in polymer compositions, especially PVC for building and residential construction is described.

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: A spray glaze or opaque composition for coating dental restorations and other surfaces and objects such as hobby ceramics that comprises about 4 to about 50 weight % glaze material, about 5 to about 60 weight % restoration wetting agent, and about 10 to about 90% non CFC propellant. An opaque composition further comprises about 5 to about 30% opaque material.

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.

Abstract: A UV screening composition comprising particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles, characterised in that the particles are adapted to minimise migration to the surface of the particles of the electrons and/or the positively charged holes when said particles are exposed to UV light in an aqueous environment.

Abstract: A color effect material is described as composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a highly reflective layer which acts as a reflector to light directed thereon and a spacer pigment layer which is selectively transparent to light directed thereon.

Abstract: The present invention relates to multilayer pigments based on platelet-shaped metal substrates coated with two or more metal oxide layers by a one-pot process in an exclusively aqueous medium. The invention further relates to the use of the multilayer pigments in paints, varnishes, printing inks, including security printing inks, plastics, ceramic materials and cosmetic and for the laser formulations marking of plastics.

Abstract: Optically variable interference pigments are composed of platelets of at least partly core-free titanium dioxide-coated substrate of about 1-25 mm particle size and an interference thickness of about 5-600 nm which have an oxide coating thereon.

Abstract: The invention relates to intensely colored interference pigments based on multi-layered plate-like substrates with at least two sequences of layers consisting of (A) a colorless layer with a refraction index n≦1,8; (B) a high-index layer consisting of a mixture of TiO2 and Fe2O3 in a ratio of 1:0.1 to 1:5 and optionally, one or more metal oxides in quantities of to layer (B); and optionally (C) an outer protective layer.

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 invention relates to multilayered interference pigments which comprise a platelet-shaped substrate of silicon dioxide which is coated alternately with layers of light-transparent materials having refractive indices of n>1.8 and layers of light-transparent materials having refractive indices of n≦1.8, where the optical thickness of the platelet-shaped substrate and the optical thickness of the individual layers of light-transparent materials having refractive indices of n≦1.8 are the same.

Abstract: The invention relates to a nondusting, solvent-containing homogeneous pigment preparation that includes ≧70% by weight of one or more effect pigments 0.1-30% by weight of an organic solvent or solvent mixture having an evaporation number (EN) of 10 to 100 and a surface tension (ST) of ≦35 mN/m and optionally 0-5% by weight of a surface-active substance.

Abstract: Multilayer pearl lustre pigment on the basis of a platelet-shaped substrate comprising a material of low refractive index in the range from 1.35 to 1.8, which comprises at least (i) one first layer comprising a material having a refractive index of more than 1.8, (ii) optionally, a second layer comprising a material of low refractive index in the range from 1.35 to 1.8, (iii) a semitransparent metal layer which is applied to the substrate or to the layers (i) or (ii), and (iv) if desired, an aftercoating, the substrate being platelet-shaped silicon dioxide, aluminium oxide, boron oxide or magnesium fluoride.

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: A metal oxide-coated mica pearlescent pigment having a coating of copper chromite thereon is provided.

Abstract: Anticorrosive white pigments useful for inhibiting corrosion include surface-coated TiO2 base bodies, preferably in the rutile modification, having Mn3(PO4)2 and one or more of the substances chosen from aluminum oxides, aluminum hydroxides, aluminum phosphates, aluminum hydrogen phosphates, aluminum dihydrogen phosphates and aluminum polyphosphates are precipitated on to the TiO2 base bodies. Mn3(PO4)2 may be replaced completely or partially by Zn3(PO4)2. Phosphates and/or oxides of cerium may be additionally deposited singly, or several of them may be deposited, on to the TiO2 base bodies.

Abstract: The present invention relates to an interference pigment based on multiply-coated platelet-shaped substrates, comprising at least one layer sequence of (A) a high refractive index coating comprising a mixture of TiO2 and Fe2O3 in a ratio of about 10:1 to about 3:1 and optionally one or more metal oxides in amounts of ≲ about 20% by weight based on the layer (A), (B) a colorless coating having a refractive index n ≲ about 1.8, and optionally (C) an outer protective layer.

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 relates to a pearl luster pigment on the basis of a platelet-shaped substrate coated with metal oxides and a top layer which is located on the metal oxide layer and can possess a multilayer structure, comprising a first layer, containing a hydroxide or oxide hydrate of the elements aluminum or silicon, a second layer, containing at least one hydroxide or oxide hydrate of the elements aluminum, silicon, cerium or zirconium, with the exception of the hydroxide or oxide hydrate which forms the first layer, and a third layer, containing at least one organic hydrophobic coupling agent. The present invention also relates to a preparation process and the use of pigments in paints, inks, plastics, coatings and cosmetics.

Abstract: The invention relates to a pearl luster pigment which may possess a first, inner layer, consisting of a platelet-shaped substrate, a second layer, comprising one or more metal oxides, the first and second layers forming a calcined base pigment, a third layer, comprising the corresponding uncalcined oxide, hydroxide or oxide hydrate of the oxide of the second layer, a fourth layer, comprising oxides, hydroxides and/or oxide hydrates of silicon or aluminum, a fifth layer, comprising oxides, hydroxides and/or oxide hydrates of silicon, aluminum, zirconium and/or cerium, this layer differing from the fourth layer, and a sixth layer, comprising one or more organofunctional coupling reagents. The present invention relates to also a preparation process, and the use of the pigments in paints, inks, plastics, coatings and cosmetics.

Abstract: The present invention relates to a pigment based on bismuth vanadate with a bright vivid yellow to orange color exhibiting improved resistance, in particular an improved resistance to heat, characterized in that it is coated with several layers of inorganic compounds in several successive stages, the last layer being based on a zinc and boron compound. The present invention also relates to the process for producing this pigment and to its application.

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: Surface-modified conductive pigment obtainable by partial coating of a conductive pigment with an organic modifying agent. The modifying agent is an organometallic compound of the elements silicon, tin, titanium, zirconium or aluminum. The pigment is prepared by dispersing a conductive pigment, subsequently adding the modifying agent, if appropriate as a mixture with a solvent, to the pigment dispersion, and in particular in an amount such that the powder electrical conductance of the partly coated conductive pigment is in the range between 80% of the starting value and 10−7 S, removing the solvent present, if appropriate, with further agitation and heating of the pigment to 100° C. and finally drying the partly coated 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 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: Colored pearl luster pigment consisting of a core of platelet shaped titanium dioxide and one or more layers of other metal oxides or metal oxide hydrates obtainable by solidifying an aqueous solution of a thermally hydrolyzable titanium compound on a continuous belt, detaching the resulting layer, coating the resulting titanium dioxide platelets, with or without drying in between, with one or more other metal oxides or metal oxide hydrates, for example Fe2O3, Fe3O4, FeOOH or Cr2O3, by a wet method, separating, drying and, if desired, calcining the material obtained.

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: A description is given of coated inorganic pigments comprising an organic pigment which has a coating, prepared by the sol-gel process from glass-forming components and densified to form a xerogel or glass, having a layer thickness of at least 0.8 .mu.m. These pigments are prepared by spray drying a sol-pigment dispersion, followed if desired by thermal densification of the xerogel layer to form a glass layer. The coated pigments are suitable for producing enamels and moldings.

Abstract: The invention relates, in particular, to pigments in the form of fine particles having enhanced stability with respect to ultraviolet solar radiation and particle radiation (electrons, protons), characterized in that the pigment are coated with a UV filter.Application in the production of paints for spacecrafts.

Abstract: The invention relates to spherical colored pigments having an average particle diameter of less than 10 .mu.m on the basis of an oxide, a mixed oxide or a silicate. The pigments are obtainable by means of spray-pyrolysis technology: a solution containing oxide-forming or silicate-forming metal compounds is converted into an aerosol and the latter is fed, preferably after predrying, to a pyrolysis reactor; the pigment is separated from the pyrolysis gas. The colored pigments according to the invention are suitable for the production of ceramic decorations and for the coloring of plastics, synthetic foils, fibers and also lacquers. By reason of the spherical shape, unusual technical application properties are achieved.

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: Antioxidant-containing polyolefin compositions are provided including titanium dioxide-coated mica particles having an overcoating calcined thereon to prevent yellowing of the compositions. Reduced photo-darkening and improved densification of the pigment can also be achieved.