74results about "Pigment preparation by wet methods" patented technology

Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. A luminescent material coating structure is provided which partially covers or encapsulates a color-shifting pigment flake, or covers the outer surface of a foil. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of the layers on one side of the core layer, or can be formed with encapsulating coatings around the core layer. The coating structure of the flakes and foils includes a core layer, a dielectric layer overlying the core layer, and an absorber layer overlying the dielectric layer. The luminescent pigment flakes and foils exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing. The luminescent pigment flakes can be interspersed into liquid media such as paints or inks to produce colorant materials for subsequent application to objects or papers. The luminescent foils can be laminated to various objects or can be formed on a carrier substrate.

Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of the layers on one side of the core layer, or can be formed with encapsulating coatings around the core layer. The coating structure of the flakes and foils includes a core layer, a dielectric layer overlying the core layer, and an absorber layer overlying the dielectric layer. A luminescent material is incorporated into the flakes or foils as a separate layer or as at least part of one or more of the other layers. The pigment flakes and foils exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing. The pigment flakes can be interspersed into liquid media such as paints or inks to produce colorant materials for subsequent application to objects or papers. The foils can be laminated to various objects or can be formed on a carrier substrate.

The present invention relates to a process for the preparation of a pigment comprising a core material and at least one dielectric layer using microwave deposition of a metal oxide from an aqueous solution of fluorine scavenger onto a core material.

A pearlescent pigment, wherein the pigment is an inorganic material and the color of a homogeneous coating of the pigment, measured over a black background has a CIELAB hue angle, hab, from about 40 to about 320 degrees, wherein L* is from about 35 to about 80, and the chroma value is less than 5. A substrate is coated with iron oxide by oxidizing an iron salt to form a pigment. The pigment may be made by a process of coating iron oxide on a substrate by oxidizing an iron salt. During the coating of the iron oxide, the pH of the mixture is increased. The coating formed has a Fe(III) / Fe(II) ratio of greater than 2. The pigments may be used in a variety of applications including coating, ink, plastic, and cosmetic compositions.

The present invention relates to a process for the preparation of a plane-parallel structure (a platelet-shaped body, or flake), comprising at least one dielectric layer consisting of oxides of one or more metal selected from groups 3 to 15 of the periodic table, which method comprises: (a) optionally applying a layer of release material on a substrate, (b) applying a composition comprising one or more precursors of one or more desired metal oxides to said release layer, or directly to a substrate with no layer of release material, (c) subjecting the one or more precursors of one or more desired metal oxides to microwave radiation to form a metal oxide layer on the substrate or on the layer of release material; and (d) separating the resulting metal oxide layer from the substrate as plane-parallel structures.

An unsupported platy titanium dioxide pigment containing an organic dye laked thereon. The dyed TiO2 pigment is useful to color cosmetic, food, and drug formulations.

Effect pigments exhibiting a synthetic mica panels in which 90% of the particle with an equivalent distribution of 2-40 mu m, and a thickness distribution of 100-3500 nm and a coating by a refractive index >=1.9 containing titanium dioxide and zinc oxide and / or one or more heavily soluble alkaline-earth compound. Independent claims are included for: (1) a formulations comprising one or more effect pigments; (2) a production of the effect pigment comprising coating the synthetic mica panel wet chemical via hydrolytic decomposition of metal salts in aqueous medium; (3) a pigment preparation comprising one or more binder, optionally one or more additives and the effect pigment; and (4) drying preparations comprising the effect pigments.

The present invention relates to a pearlescent pigment with large aspect ratio and a method of their preparation, and particularly to pearlescent pigments prepared by coating a metal or metal precursor on the flaky alpha-alumina crystals obtained by using an aluminum precursor aqueous solution and a zinc precursor aqueous solution as main ingredients. The crystals herein has an average particle thickness of 0.5 μm or less, an average particle diameter of 15 μm or higher and a large aspect ratio of 50 or higher, thereby being superior in gloss. The crystals show metal colors and interference colors of silver, gold, red, purple, blue and green.

The present invention relates to a pearlescent pigment with large aspect ratio and a method of their preparation, and particularly to pearlescent pigments prepared by coating a metal or metal precursor on the flaky alpha-alumina crystals obtained by using an aluminum precursor aqueous solution and a zinc precursor aqueous solution as main ingredients. The crystals herein has an average particle thickness of 0.5 [mu]m or less, an average particle diameter of 15 [mu]m or higher and a large aspect ratio of 50 or higher, thereby being superior in gloss. The crystals show metal colors and interference colors of silver, gold, red, purple, blue and green.

A platy pigment substrate having a carbon-containing coating thereon is provided wherein the coating comprises a pyrolyzed carbon-containing ionic species. The products of the present invention may be used in any application where pearlescent pigments have been used heretofore including but not limited to automotive and industrial paint applications.

The invention relates to a method for preparing graphene-based conductive pearlescent pigment .The method comprises the steps of mixing oxidized graphene solution with pearlescent pigment dispersion liquid, and heating and stirring the mixed solution for one hour to one week at 20-100 DEG C to obtain oxidized graphene-based pearlescent pigment; preparing oxidized graphene-based pearlescent pigment dispersion liquid, adding a metallic reducing agent, conducting uniform mixing, and then conducting heating and stirring for 10 seconds to 24 hours at 10-100 DEG C, so that the graphene-based conductive pearlescent pigment is obtained .The method is convenient to operate, high in efficiency, environmentally friendly, free of pollution, low in cost and capable of achieving large-scale production.

The present invention is to provide a colored bright pigment which is to be incorporated into a coating material, a resin composition, an ink, a cosmetic and the like, and exhibits not only high transparency and brightness but also high chroma and clear color. The colored bright pigment is characterized in that it comprises scaly glass flakes on the surface of which a silica-based coating film containing an organic pigment is coated. It is preferred that a titanium oxide or a metal is coated on the surface of the scaly glass flakes and the silica-based coating film is further coated thereon. The above colored bright pigment is used after being incorporated into a coating material, a resin composition, an ink, a cosmetic or the like.

A pearlescent pigment (100) includes: a flaky substrate (10); a titanium dioxide layer (20) that is formed on the flaky substrate (10); and an oxazoline compound layer (40) that is formed on the titanium dioxide layer (20) with the titanium dioxide layer (20) being interposed between the flaky substrate (10) and the oxazoline compound layer (40), and serves as a top surface of the pearlescent pigment (100).

This invention provides a highly orientated surface-modified pearl pigment excellent in plane orientation (leafing effect). Disclosed are: a surface-modified pearl pigment wherein fine polymer particles adhere, without being mutually aggregated, to hydrated metal oxides via chemical bonding; a process for producing the same: and use thereof for inks, coatings and plastics.

The present invention relates to a flake pigment, a preparation method thereof and a cosmetic composition comprising the same, and particularly to a flake pigment prepared by coating a metal oxide on the surface of a flake synthetic aluminum having predetermined ranges of an aspect ratio and an average particle diameter, wherein the pigment shows interference colors while reducing the glossiness, thereby enabling cosmetics containing the pigments to be superior in natural transparency and adhesive and slipping properties as well as in color expression and a mat feel due to a low glossiness, along with a preparation method thereof and a cosmetic composition comprising the same.

A bright pigment of the present invention includes a scaly inorganic base 10, a silver-containing coating 11 that covers the inorganic base 10 and contains silver or a silver alloy, and a yellowing-suppressing coating 2 that covers the inorganic base 10 from outside of the silver-containing coating 11 and contains a metal compound functioning as an oxidizing agent. The metal compound is preferably at least one selected from the group consisting of a hydroxide of metal, an oxide hydrate of metal, and a salt of an oxide hydrate of metal, and the metal is at least one selected from the group consisting of tungsten, molybdenum, bismuth, vanadium, or cerium.

A pearlescent pigment based on a metal oxide-coated, platelet-shaped substrate and a top layer on the metal oxide layer, where the top layer comprises silicon dioxide, at least one further metal hydroxide or metal oxide hydrate and at least one organic coupling reagent. The further metal hydroxides or metal oxide hydrates are hydroxides or oxide hydrates of cerium, aluminum or zirconium, or mixtures thereof. The coupling reagents employed are organofunctional silanes, zirconium aluminates or metal acid esters.

The invention relates to platelet-shaped pearlescent pigments that are coated with at least one mixed inorganic / organic layer for improving their application properties, and of these, particularly their mechanical properties, and to methods for the production thereof and to the use thereof. The said mixed inorganic / organic layer comprises at least one at least partially crosslinked inorganic metal-oxide component and an organic component. The organic component is at least one organic oligomer and / or polymer, which is covalently bonded, at least in part, to the inorganic network via network formers, wherein the coating comprises at least one mixed inorganic / organic layer, which mixed layer comprises, at least in part, an inorganic network having one or more inorganic oxide component(s) and at least one organic component, the organic component being, at least in part, an organic oligomer and / or polymer covalently bonded, at least in part, to the inorganic network via one or more organic network formers.The invention also relates to a method for the production of such pearlescent pigments.

The invention discloses conductive pearlescent pigment and a preparation method thereof. The conductive pearlescent pigment comprises a pearlescent pigment basal body and a conductive coating layer coated on the surface of the pearlescent pigment basal body, wherein the conductive coating layer is prepared on the surface of the pearlescent pigment basal body in situ by a treatment agent. The preparation method comprises the step of after coating the pearlescent pigment basal body by the treatment agent, calcining the coated pearlescent pigment basal body at high temperature under a vacuum environment or under the atmosphere of non-activity gas and / or reduction gas. The preparation method of the conductive pearlescent pigment, disclosed by the invention, is simple in craft, strong in controllability and low in cost, the conductivity of a prepared product is excellent, and the conductive coating layer is unlikely to fall off.

The invention relates to glass platelet-based nacreous pigments which are characterized by the following layer structure: A) optionally an SiO2 layer, B) a highly refractive coating having a refractive index n > 1.8 and substantially consisting of TiO2, C) a low refractive-index layer containing SiO2 and / or AI2O3 and optionally D) an outer protective layer. The invention also relates to the use of these pigments in paints, lacquers, car paints, coating powders, printing inks, security printing inks, plastic materials, ceramic materials, glasses, papers, in toners for electrophotographic printing processes, in seeds, in greenhouse films and tarpaulins, as absorbing agents used in laser marking of paper and plastic materials, as absorbing agents used in laser welding of plastic materials, in cosmetic formulations, for producing pigment pasting compounds with water, organic and / or aqueous solvents, for producing pigment preparations and dry preparations.

A bright pigment with a gold tone of the present invention includes a scaly glass substrate 10, a base coating 20 containing at least one metallic material selected from the group consisting of silver, nickel and a nickel-based alloy, a gold coating 30 containing gold and a yellow coating 40 containing a yellow colorant and a parent material. The base coating 20, the gold coating 30 and the yellow coating 40 each form a layer covering the scaly glass substrate 10, and the base coating 20 is arranged innermost among the base coating 20, the gold coating 30 and the yellow coating 40.

The present invention relates to a flake pigment, a preparation method thereof and a cosmetic composition comprising the same, and particularly to a flake pigment prepared by coating a metal oxide on the surface of a flake synthetic aluminum having predetermined ranges of an aspect ratio and an average particle diameter, wherein the pigment shows interference colors while reducing the glossiness, thereby enabling cosmetics containing the pigments to be superior in natural transparency and adhesive and slipping properties as well as in color expression and a mat feel due to a low glossiness, along with a preparation method thereof and a cosmetic composition comprising the same.

A pearlescent pigment (100) includes: a flaky substrate (10); a titanium dioxide layer (20) that is formed on the flaky substrate (10); and an oxazoline compound layer (40) that is formed on the titanium dioxide layer (20) with the titanium dioxide layer (20) being interposed between the flaky substrate (10) and the oxazoline compound layer (40), and serves as a top surface of the pearlescent pigment (100).

The present invention relates to a pearlescent pigment with large aspect ratio and a method of their preparation, and particularly to pearlescent pigments prepared by coating a metal or metal precursor on the flaky alpha-alumina crystals obtained by using an aluminum precursor aqueous solution and a zinc precursor aqueous solution as main ingredients. The crystals herein has an average particle thickness of 0.5 μm or less, an average particle diameter of 15 μm or higher and a large aspect ratio of 50 or higher, thereby being superior in gloss. The crystals show metal colors and interference colors of silver, gold, red, purple, blue and green.

The invention discloses carbon black coloring pearlescent pigment and a preparation method thereof. The carbon black coloring pearlescent pigment comprises a pearlescent pigment matrix and a carbon black coloring layer which is prepared in situ on the surface of the pearlescent pigment matrix by a treating agent. The preparation method includes: using the treating agent to envelope the pearlescent pigment matrix; calcining at high temperature in an atmosphere of inactive gas and / or reductive gas or in a vacuum condition. The preparation method is simple in process, high in controllability and repeatability and low in cost, and the carbon black coloring pearlescent pigment prepared by the method is compact in carbon layer, firm in bonding, less prone to decoloring and easy in large-scale production.

The invention relates to a non-color shifting multilayer structure and protective coating on the same, and specifically, provides a color pigment of an omni-directional structure comprising a protective coating. The segment comprises a first layer of a first material and a second layer of a second material, and the second layer extends accross the first layer. In addition, when the segment is exposed to wide-band electromagnetic radiation and is observed at the angle of 0-45 degrees, the segment reflection has reserved full width at half maximum (FWHM) of below 300nm and an electromagnetic radiation band of reserved color shifting of below 30 degrees. The segment comprises a weathering coating which covers the external surface of the segment and makes the relative photocatalytic activity of the segment reducing at least 50%.

The invention relates to pigments comprising a substrate and a ferrous coating which is applied to the substrate and comprises metallic iron. The invention also relates to a method for producing the inventive pigments and to the use of the same.