Abstract: A precious metal color effect material is composed of a plurality of encapsulated substrate platelets in which each platelet is encapsulated with a first layer selected from the group consisting of silver, gold, platinum, palladium, rhodium, ruthenium, osmium, iridium and the alloys thereof, which acts as a reflector to light directed thereon, a second layer encapsulating the first layer in which the second layer provides an optically variable reflection of light impinging thereon and a third layer encapsulating the second layer and being selectively transparent to light directed thereon.

Abstract: A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant is prepared by polymerizing (i) at least one prepolymer having a radically polymerizable group, and (ii) at least one second monomer. The prepolymer is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, of at least one radically polymerizable first monomer. The second monomer forms a polymeric backbone segment of the pigment dispersant, and the prepolymer forms polymeric segments that are pendent to the backbone. The backbone segment of the pigment dispersant is hydrophilic, while at least a portion of each pendent polymeric segment is hydrophobic.

Abstract: To provide an ultraviolet absorbent having high UV shieldability, especially UV-A shieldability, high transparency and good dispersibility.

Abstract: The present invention relates to pigment mixtures containing at least two components, component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being one or more functional pigments, such as electrically conductive pigments, magnetic pigments, IR-reflective pigments or lasermarkable pigments, and to their use in varnishes, paints, printing inks, plastics and powder coatings.

Abstract: A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, of a radically polymerizable monomer in the presence of a polymeric initiator having at least one radically transferable group. The polymeric initiator forms the polymeric backbone segment of the pigment dispersant, and the monomer forms polymeric segments that are pendent to the polymeric backbone segment. The pigment dispersant has comb-like architecture in which the polymeric backbone segment is hydrophobic, and at least a portion of each pendent polymeric segment is hydrophilic.

Abstract: A lustrous interference pigment with a black absorption color is obtained by forming a mica coated with hydrous titanium, iron and cobalt or chromium oxides, calcining the coated mica and then coating the resulting product with hydrous titanium and/or iron oxides and calcining the resulting product.

Abstract: A pigment material for use in a coating composition suitable for coating a sheet material to be printed by an electrophotographic printer which pigment material comprises a blend of Components A and B as follows: Component A: a fine pigment material suitable for gloss coating of a sheet material the pigment material comprising particles at least 80% by weight of which have an equivalent spherical diameter (“esd”) of less than 2 &mgr;m and having a particle size distribution (“psd”) such that its d50 value, namely the particle esd value less than which 50% of the particles have an esd, is less than 1 &mgr;m; and Component B: a coarse pigment material having a psd such that its d50 value is from 2 &mgr;m to 10 &mgr;m, desirably 2 &mgr;m to 5 &mgr;m and such that not more than 2% by weight of the particles of the coarse pigment material have an esd greater than 15 &mgr;m, desirably not more than 2% have an esd greater than 10 &mgr;m; wherein the weight ratio of Component A to Component

Abstract: Multilayer pearl luster pigment based on an absorbing platelet-shaped substrate which is coated with alternating layers of a material of low refractive index and a material of high refractive index, or with a metal, the difference in the refractive indices being at least 0.1.

Abstract: The invention relates to a non-dusting homogeneous pigment composition comprising at least 50 % by weight of one or more effect pigments, 0.1-50 % by weight of plasticizer or a mixture of plasticizer/nitrocellulose, and 0-49.9 % by weight of a solvent or solvent mixture; and to its use in paints, varnishes, printing inks and plastics.

Abstract: The present invention relates to pigment mixtures containing at least two components, component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being special-effect pigments, and to their use in varnishes, paints, printing inks, masterbatches, plastics and cosmetic formulations.

Abstract: The present invention relates to a process for pigmenting a porous metal oxide by applying a solution of a soluble pigment derivative and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the metal oxide's pores. The invention also relates to pigmented porous metal oxides and materials comprising a solid substrate and a surface layer of a pigmented metal oxide.

Abstract: A golf ball is provided which bears a mark having a distinct appearance unrealizable by only changing in tint. Ink can be prepared by mixing one or more than two components which can afford luster such as pearl particles, shell particles, mica particles and the like in an ink medium, thereafter such a ink can be used for marking on the surface of the golf ball by an indirect printing used with a transfer printing film or a direct printing such as a pad printing, a screen printing and the like. The composition of the ink is 5 to 150 parts by weight of the mica, pearl particles and the like. The mica, the pearl particles and the like are employed for flat forms.

Abstract: Methods for fabricating a color shifting multilayer interference film are provided. The interference film may be used to produce flakes for use in colorants having color shifting properties. The flakes can be interspersed into liquid media such as paints or inks which can subsequently be applied to objects or papers to achieve color variations upon shifts in angle of incident light or upon shifts in viewing angle. A five layer design of the interference film includes a first absorber layer, a first dielectric layer on the first absorber layer, a reflector layer on the first dielectric layer, a second dielectric layer on the reflector layer, and a second absorber layer on the second dielectric layer. The first and second dielectric layers are formed to have an optical thickness at a design wavelength that provides a color shift as the angle of incident light or viewing changes.

Abstract: A lamellar particle is coated with an amorphous metal oxide hydrated gel which is then converted into a hydrophobic metal hydroxide-organic composite polymer film. The resulting product can be combined with a powdery film-forming polymer to produce a film-forming composition which can be applied by electrostatic coating. It also has significantly enhanced performance in plastic masterbatching, hydrophobic cosmetic formulations, and liquid paints and numerous other applications where a hydrophobic pigment is advantageous.

Abstract: A color shifting multilayer interference film is provided which may be used to produce flakes for use in colorants having color shifting properties. The flakes can be interspersed into liquid media such as paints or inks which can subsequently be applied to objects or papers to achieve color variations upon shifts in angle of incident light or upon shifts in viewing angle. A five layer design of the interference film includes a first absorber layer, a first dielectric layer on the first absorber layer, a reflector layer on the first dielectric layer, a second dielectric layer on the reflector layer, and a second absorber layer on the second dielectric layer. The first and second dielectric layers are formed to have an optical thickness at a design wavelength that provides a color shift as the angle of incident light or viewing changes.

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: Optical coating compositions containing thin film particulates or pigments that are capable of imparting to the coating preselected optical characteristics or properties, such as selective reflectance, transmission and absorptance of light energy, are comprised of film forming binder and improved high volume pigment particles dispersed in the binder. Each pigment particle is a high volume flake comprised of an inorganic or polymer core having two sides and a thin film optical structure deposited onto each of the two sides of the core. The core occupies a large volume of the coating composition and dramatically reduces the number of flakes and the amount of thin film structures required to produce a coating of given thickness and desired optical properties. The core may also be fabricated to have diffuse and irregular side surfaces in order to render the applied coating visually diffuse and nonspecular. Methods of making the pigment particles are disclosed.

Abstract: A color shifting multilayer interference film is provided which may be used to produce flakes for use in colorants having color shifting properties. The flakes can be interspersed into liquid media such as paints or inks which can subsequently be applied to objects or papers to achieve color variations upon shifts in angle of incident light or upon shifts in viewing angle. A five layer design of the interference film includes a first absorber layer, a first dielectric layer on the first absorber layer, a reflector layer on the first dielectric layer, a second dielectric layer on the reflector layer, and a second absorber layer on the second dielectric layer. A three layer design of the interference film includes first and second absorber layers with a dielectric layer therebetween. The dielectric layers are formed to have an optical thickness at a design wavelength that provides a color shift as the angle of incident light or viewing changes.

Abstract: Multilayer interference pigment consisting of plateletlike titanium dioxide as 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 solidification and hydrolysis of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the resulting coat, coating of the resulting titanium dioxide platelets, with or without drying in between, by a wet method with, alternately, a metal oxide hydrate of high refractive index and a metal oxide hydrate of low refractive index by hydrolysis of the corresponding, water-soluble metal compounds, separation, drying and, if desired, calcining of the material obtained.

Abstract: A pale electrically conductive pigment consisting of a substrate and an electrically conductive layer formed of phosphorus- and/or fluorine-doped tin oxide. There may be an interlayer disposed between the substrate and the conductive layer.

Abstract: The present invention relates to laser-markable plastics, in particular thermoplastic polyurethanes, which are distinguished by the fact that they contain pigments having a coating of doped tin dioxide.

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: Modified pearl luster pigments for waterborn coating systems, based on a platelet-form substrate coated with metal oxides and, located on the topmost metal oxide layer, a top layer consisting of at least two oxides and/or mixed oxides from the group consisting of silicon dioxide, aluminium oxide, cerium oxide, titanium oxide and zirconium oxide, and on a water-based oligomeric silane system. The oligomeric silane system can be described, for example, by the following approximate structure: [HO[Si(A)(OH)z(CH3)1−zO]a[Si(B)(OH)y(CH3)1−yO]b[Si(E)(OH)w(CH3)1−wO]c[Si(D)(OH)v(CH3)1−vO]dH].

Abstract: A metal substrate having a pearlescent pigment coating thereon in which the pearlescent pigment is an iron oxide-coated interference thickness titanium dioxide platelet and in which the iron content of the combined oxide coatings is at least 1% exhibits color travel.

Abstract: Multilayer interference pigment consisting of a central layer of a transparent or semitransparent material of low refractive index and alternating layers of a metal or of a material of high refractive index and of a material of low refractive index either side of the central layer, the material of low refractive index preferably being magnesium fluoride or acrylate and the metal preferably being aluminium or chromium.

Abstract: The present invention describes a novel method for the formation of optically variant pigments by the coating of layers onto a substrate and the fracturing of the coated material into pigment particles after the coating operation and novel pigments produced thereby. Coating techniques such as slot die coating (especially multiple slot die coating), spin coating, meniscus coating, curtain coating, and the like have proven successful. It is preferred that multiple die slots are used to coat multiple layers in a single pass so that manufacturing costs are minimized. The use of these coating techniques, and especially multiple die slot coating, allows for many layers to be coated, with from three to fifty layers being readily possible. This offers a relatively inexpensive way of coating out a wide variety of layers, and especially the pigment materials needed for optically variable pigments, quickly and with high quality.

Abstract: The present invention relates to surface-modified pigments based on platelet-shaped substrates, having improved settling and reagitation characteristics, and to their preparation processes and use.

Abstract: Goniochromatic luster pigments are based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere and which comprise at least one layer packet comprisingA) a colorless coating having a refractive index n.ltoreq.1.8 andB) a colorless coating having a refractive index n.gtoreq.2.0.

Abstract: A pearlescent pigment which is a ferrite-coated iron oxide-coated platy substrate in which the ferrite is substantially free of crystallites is obtained by adding metal ions to a slurry of hydrous iron compound and platy particles and then co-calcining in the metal and iron.

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: Multilayer interference pigments consisting of a transparent carrier material coated with alternating layers of metal oxides of low and high refractive index, the layers of the metal oxides of low refractive index being optically inactive.The thickness of the metal oxide layers of high refractive index is an integral multiple of the optical thickness which is necessary for the desired interference color.The layer thickness of metal oxide layers of low refractive index is from 1 to 20 nm.

Abstract: Multilayer interference pigment consisting of a central, absorbing layer and alternating layers of a material of low refractive index and of a metal or of a material of high refractive index either side of the central layer, the material of low refractive index preferably being acrylate and the metal being aluminium or chromium. The absorbing layer consists of a coating system which comprises carbon black or color-imparting absorption pigments.

Abstract: Described herein is a method for making a flake for use in a topical application. The flake is formed by contacting a liquid phase waxy material that may contain pigments, fragrance, plasticizer, hydrophilic modifier with a pseudoplastic hydrophilic gel, and/or an active ingredient. The waxy material contacts the surface of the gel and after the two materials have contacted, the waxy material is solidified and forms a sheet. This sheet is then broken into pieces to form the flakes of the present invention. The flakes can be used in formulating any topical product that can contain a lipid material.

Abstract: In accordance with the present invention, there are provided non-magnetic black particles composed primarily of Fe and having a hematite structure, which shows an excellent blackness, heat resistance, and dispersibility in a vehicle, and which particles contain manganese in an amount of 5 to 40% by weight based on the weight of the non-magnetic black particles, a soluble sodium salt in an amount of not more than 500 ppm (calculated as Na), and a soluble sulfate in an amount of not more than 200 ppm (calculated as SO.sub.4), and have an average particle size of 0.1 to 10.0 .mu.m and a pH of not less than 5.5.

Abstract: An ultraviolet radiation shielding pigment having a high power of shielding of ultraviolet radiation, particularly UV-A, a low cohesive force, and excellent extensibility and adhesiveness as a pigment for cosmetics. A pigment for shielding an ultraviolet radiation which comprises a flaky powder having particle surfaces coated with particles of barium sulfate having an average diameter of 0.1 to 2.0 microns, and with needle crystal particles of zinc oxide having an average major-axis diameter of 0.05 to 1.5 microns, and a process for manufacturing it.

Abstract: Goniochromatic luster pigments based on silicon dioxide platlets, CVD coated withA) a nonselectively absorbing filmlike layer at least partially transparent to visible light, andB) if desired an outer layer which consists essentially of colorless or selectively absorbing metal oxide and/or comprises phosphate, chromate and/or vanadate,are prepared and used for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.

Abstract: Disclosed herein is a method of producing pearlescent pigments comprised of a platelet substrate and a TiO.sub.2 coating, which has a rutile structure and which does not contain foreign metal species. The method entails the deposition of Ti(III), followed by the deposition of a Ti(IV), onto the platelet substrate.

Abstract: A pearlescent pigment comprises C glass flakes having a first layer comprising rutile titanium dioxide or iron oxide thereon and a second layer comprising hydrous oxide or hydroxide of a polyvalent cation, precipitate of said polyvalent cation, and an anionic polymeric compound. A hydrous layer of the rutile forming titanium dioxide or iron oxide is first formed on the glass flakes and the resulting coated flakes are calcined prior to the application of the second layer.

Abstract: The present invention relates to non-lustrous iron oxide-containing color pigments based on dry-milled inorganic plateletlike substrates having a particle size of <60 .mu.m, characterized in that the iron oxide compound is yellow FeO(OH) and/or Fe.sub.2 O.sub.3.

Abstract: A pigment of the present invention comprises:pigment particle as core particle;a lower coat formed on at least a part of surface of the pigment particle, comprising squaric acid, polyol having an anthraquinone skeleton represented by the general formula (I): ##STR1## wherein m is an integer of 0 to 4, n is an integer of 0 to 4 and m+n is an integer of 2 to 4,or a mixture of the squaric acid and the polyol having an anthraquinone skeleton represented by the general formula (I); andan upper coat formed on at least a part of surface of the obtained particle, comprising at least one alkylene glycol represented by the general formula (II):C.sub.q H.sub.2q (OH).sub.2 (II)wherein q is an integer of 2 to 10.Such pigment has excellent dispersion facility, dispersion homogeneity and dispersion stability, and is suitably used for not only organic solvent-type paints but also water-based paints.

Abstract: A tire sealant mixture contains water, mica flakes, hydrated bentonite clay, and a water-miscible carrying agent such as propylene glycol. This sealant mixture is capable of sealing a puncture caused by a 3mm diameter nail without significant pressure loss when the mixture is deployed inside the tire as a prophylactic measure against flat tires.

Abstract: A rigid and brittle bright metal flake is formed of a central layer of a reflective material supported on both sides by dielectric layers. In a preferred embodiment, the metal layer is aluminum having a thickness of about 100 nm and the dielectrics are either silicon dioxide or magnesium fluoride, each having a thickness of about 100 nm. The result is a very thin three-layered metal flake about 300 nm thick that exhibits a uniaxial compressive strength of about 8 times a corresponding uniaxial tensile strength. As a result, the metal flake is then afforded the benefits of rigidity and brittle fracture during the manufacturing and applicational processes which ultimately provides favorable planar and specular reflectance characteristics in the visible wavelength range.

Abstract: Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colors cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colors. The powders of this system are obtained by a combination of three mechanical, chemical, thermal and/or irradiation processes. They are particularly useful to color materials and, more especially those used in the construction and architectural fields.

Abstract: A cerium oxide with pores having a uniform lamellar structure. The pores may be at least partially arranged in substantially parallel directions and may also extend throughout the grain. The method for preparing said cerium oxide comprises heat treating a compound that essentially consists of cerium carbonate octahydrate. The atmosphere in which the treatment is performed includes an air/steam or oxygen/steam mixture with a steam volume fraction of at least 40%. Said cerium oxide is particularly useful as a catalyst, especially in motor vehicle post-combustion catalysis.

Abstract: Plateletlike titanium dioxide reduction pigment consisting of titanium dioxide, titanium suboxides and, if desired, a further metal oxide or titanium oxynitride, obtainable by solidifying an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detaching the resulting coat, coating the resulting titanium dioxide platelets, with or without drying in between, with further titanium dioxide by a wet method, drying and, if desired, calcining the material, and treating the material obtained with a reducing agent in a nonoxidizing gas atmosphere.

Abstract: Compositions of fluoropolymer containing a first filler component such as mica and a second filler component such as talc are resistant to permeation by water and aqueous acid and provide useful coatings for such items as chemical equipment. The composition can be used as coatings which can be applied by electrostatic spray of dry powder.

Abstract: Single-layer or multilayer titanate-containing pearlescent pigments comprising iron titanate and, if appropriate, titanium oxide and/or iron oxide, which is obtainable by solidification of an aqueous solution of a thermally hydrolysable titanium compound on a continuous belt, detachment of the layer formed, coating of the resulting titanium dioxide platelets, after or without intermediate drying, with iron oxide in a wet process, and drying and calcining of the resulting material in an oxidizing or reducing gas atmosphere at not less than 500.degree. C., the layer thicknesses of the titanium dioxide layer and iron dioxide layer being adjusted such that either the stoichiometric ratio between iron oxide and titanium dioxide necessary for the formation of pseudo-brookite or ilmenite is obtained or an excess of iron oxide or titanium dioxide is present.

Abstract: The invention concerns oxidised aluminium or aluminium alloy pigments having a content of metallic aluminium of not more than 90% by weight with respect to the total weight, wherein the pigments are colored, flake-like, shiny and non-agglomerated, a process for the production thereof and use thereof as special-effect pigments and as base pigments for further colouring with organic or inorganic color pigments.

Abstract: Goniochromatic luster pigments based on multiply coated, high refractive, nonmetallic, platelet-shaped substrates which are at least partially transparent to visible light, comprising at least one layer packet ofA) a colorless coating having a refractive index n.ltoreq.1.8 andB) a reflecting, selectively or nonselectively absorbing coating which is at least partially transparent to visible light,and also, if desired, additionallyC) an outer protective layer,and their use for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.

Abstract: Disclosed is a system of natural colors consisting of thousands of colored powders of mineral origin and of materials in or on which pigments have been applied and, afterwards, submitted to at least one thermal treatment and/or irradiation. These natural colors cover the totality of the visible spectrum and offer a great variety of tones, tints and reflections from white to black, including all the rainbow colors. The powders of this system are obtained by a combination of two mechanical, chemical, thermal and/or physical processes and are used alone or in combination. They are particularly useful to color materials and, more especially those used in the construction and architectural fields.