47 results about "Pigment granule" patented technology

The present invention uses polycarboxylic acid type high-molecular copolymer as dispersing agent and fixing agent to prepare superfine pigment ink as ink-jet printing ink. It is characterized by that the pigment dispersing agent and fixing agent are made into the same compound, after it is jetted and printed, the high temperature can be used to fix the pigment on the fibre and obtain required fastness. The average grain size of pigment granules prepared by said method is less than 300 nm.

The present invention relates to a preparation method of nano pigment. It is characterized by that said invention adopts microcapsule technique to modify the pigment surface to make the surface of modified pigment be covered by polymer so as to prevent agglomeration of pigment granules and obtain the nano pigment with good flowability, dispersibility and stability.

A method for the preparation of pigment granules includes mixing at least one pigment selected from the group consisting of iron oxide and chromium oxides with 1-25 wt. % water to form a damp powder. The damp powder is then pressure extruded through at least one die to form granules. The granules are then dried so that the final water content of the granules is less than about 1%, crumbled and sieved to form the final product.

The present invention provides synthetic pigment structures, isolated pigment granules, and pigment proteins, as well as methods of making and using them.

The invention discloses a method for improving the color fastness of pigment ink by using a multifunctional hyperbranched dispersant, belonging to the field of fine chemical engineering. The method comprises the following steps: uniformly stirring and mixing 30-50% of a hyperbranched dispersed pigment colorant, 1-5% of an adhesive, 10-50% of a water soluble cosolvent and 1-5% of a nonionic surfactant by mass, wherein water is added to fill to 100% if 100% is not satisfied); adjusting the pH value of the ink to 8-10; and filtering to obtain the hyperbranched dispersed pigment ink. The pigment granules in the ink prepared by the method are small in diameter and relatively excellent in stability. A fabric subjected to jet printing by the ink is roasted and fixated to obtain relatively excellent color fastness. The preparation method and an application method are simple, and the ink has a good application prospect.

Pigment granules comprise one or more flake-form effect pigments, polymer particles or polymer particle mixtures, adhesion promoters, antioxidants and optionally additives. A process for the preparation of pigment granules comprises mixing one or more flake-form effect pigments, one or more polymer particles, at least one adhesion promoter, at least one antioxidant and optionally one or more additives with one another simultaneously or successively. The pigment granules may be used for the pigmentation of powder coatings, plastics and for the preparation of masterbatches. The pigment granules may be employed as a mixture with plastic powders or as a mixture with plastic granules for use in masterbatch applications.

The invention discloses a color filter and a manufacturing method thereof. The method disclosed by the invention comprises the following steps of: forming a resin layer with micropores on a substrate; injecting pigment granules into the micropores in the specific positions in the resin layer; and solidifying the injected pigment granules in the specific positions in the resin layer, thereby forming resin graphs in the specific positions in the resin layer. In the color filter disclosed by the embodiment of the invention, because the formed resin graphs are positioned in the same resin layer, the angle interval differences in the resin graphs and the pixel interval differences among different resin graphs are avoided, thereby avoiding the phenomenon of light leakage of a liquid crystal display or uneven display on the surface of a display screen.

Electrophoretic displaying particles are provided. The particle is comprised of a resin and pigment granules enclosed therein. The pigment granules have an average particle size ranging from 0.1 μm to 20 μm, and the granule diameter distribution has two or more frequency maximums. This electrophoretic displaying particulate has high masking performance, improving the displaying contrast of the displaying device.

A measuring method of absorption coefficients of total particulate matter and phytoplankton in the water relates to a measuring method of total particulate matter and components thereof. The invention aims to solve the problem that when measuring the absorption coefficient of total particulate matter at home and abroad, phycobilin and some pigments of eukaryotic cells can not be well extracted when methanol is used to extract for removing phytoplankton, and the absorption of non-pigment particulate matter and the inaccurate measurement of absorption coefficient are caused by using sodium hypochlorite to extract for removing phytoplankton. The method of the invention comprises the following steps: 1) preparing filtration film samples and a blank sample; 2) placing the samples in a spectrophotometer to measure the absorbance; 3) calculating the absorption coefficient of total particulate matter; 4) extracting filtration film samples with acetone to remove phytoplankton and retaining non-pigment particulate matter; 5) obtaining the absorbance of non-pigment particulate matter; 6) calculating the absorption coefficient of the non-pigment particulate matter; and 7) calculating the absorption coefficient of phytoplankton.

Pigment granules including a support material which is coated with one or more flake-form effect pigments by means of an adhesion promoter. The effect pigments may be, for example, pearlescent pigments, interference pigments, metal-effect pigments, multilayered pigments having one or more transparent, semi-transparent or opaque layers, goniochromatic pigments, holographic pigments, coated BiOCL flakes, uncoated BiOCl flakes, and LCP pigments, and mixtures thereof. A process for the production of pigment granules includes mixing one or more flake-form effect pigments, a support material, at least one adhesion promoter, and optionally one or more additives simultaneously or successively with one another. The pigment granules may be used for the pigmenting of application media, in particular paints, plasters, coatings, powder coatings, plastics, and in particular as scatter and effect granules, for example for the decoration of wallcoverings. The pigment granules may additionally include one or more additives and assistants.

The invention relates to a method for making articles having a veined aspect that includes the steps of (a) extruding a layer of substantially transparent PMMA including pigmented granules in a first extruder, (b) extruding a polystyrene layer including a foaming agent in a second extruder, wherein the extrusions of steps (a) and (b) are carried out simultaneously as a co-extrusion.

The invention provides a pigment particle. The pigment particle comprises a pigment granule and an organic modified layer formed on the surface of the pigment granule; the organic modified layer is asurfactant layer or a polymer material layer formed on the surface of the pigment granule; and the organic matter content per unit surface area of the pigment granule, Wsurf, is in the range of 0.1-2% g/m<2>. The pigment particle has a good stability, and an electrophoretic display produced from the pigment particle has good optical performances.

The invention relates to stable black nano water dispersible pigment dispersion liquid and a preparation method thereof. The black nano water dispersible pigment dispersion liquid is characterized by consisting of black pigment C.I.P.B.7, polyurethanes dispersant, bactericide and de-ionized water; wherein, the proportion between the active ingredients which are the black pigment and the dispersant is preferentially within the range of 1.1-1.8. The preparation method comprises the steps: the dispersant and the de-ionized water are mixed in a container to be stirred and then added with the black pigment; the mixed solution is cut for 0.5-8h by a high speed shearing machine and then is ground and dispersed in a circulating way; granularity detection is carried out every 15min until the grain diameter of the dispersion liquid reaches the requirement. The invention has the advantages that the water dispersible pigment dispersion liquid has good dispersibility and storage stability; black pigment cluster is mechanically shattered to be smaller, so that the dispersant can be anchored and fixed on the pigment granules, thus preventing the pigment granules agglomerating together. The stability of the prepared pigment dispersion liquid is enhanced.

In various embodiments, the present invention is directed to a facile one-pot reverse emulsion process to assemble core-shell nanoparticles (CS-SMNPs) into bright and noniridescent photonic supraballs. In one or more embodiments, the present invention is directed to core-shell nanoparticles having an inner high refractive index (RI) core and an outer low RI shell. In one or more embodiment, the present invention includes core-shell nanoparticles using high RI (˜1.74) melanin cores and low-RI (˜1.45) silica shells. In various embodiments, these nanoparticles may be self-assembled into bright and noniridescent supraballs using a scalable one-pot reverse emulsion process. According to various embodiments of the present invention, it is possible to generate a full spectrum of structural colors with the combination of only two ingredients, synthetic melanin and silica.

An electrophoretic dispersion with at least two particle species is proposed in which a minimal number (and concentration) of free compounds is present in solution. All chemicals needed to color and stabilize the pigment particles are preferably covalently attached to or within the particles. This enhances the robustness of the system and minimizes the conductivity of the dispersion so that the driving voltage for an electrophoretic display is reduced.

The invention relates to a method for preparing a zirconium silicate-coated black material, which comprises the following steps: (1) uniformly mixing melanin particles, zirconium silicate powder and flux powder to form a mixture; (2) using microwaves to mix The material is heated until the zirconium silicate powder melts into a liquid phase and is uniformly wrapped on the outside of each melanin particle; (3) annealing. The present invention makes full use of the characteristics of melanin particles such as graphite powder, plant carbonized carbon black, and organic matter conversion carbon black that can fully absorb microwave heat, changes the lattice characteristics of melanin particles, increases the surface activity of melanin particles, and uses flux to assist in melting silicon Zirconium acid, forming a liquid phase to realize the zirconium silicate wrapping of melanin, forming a denser, stronger adhesion transparent composite layer, the quality of the black pigment is better, only by adding flux for microwave heating treatment, the process only It takes tens of minutes, and the process is simple, the cost of raw materials is low, energy saving and environmental protection, and it is suitable for industrialized production.

The invention relates to a freckle removing medicinal liquid. The freckle removing medicinal liquid has the effects of dispelling wind, activating blood, nourishing blood, moistening dryness, removing stasis, removing freckles, restoring the skin pigment and the like. After the medicinal liquid is soaked into alcohol, all or most of useful components such as freckle removing components contained in the medicinal liquid are dissolved into the alcohol, and the original effects of all the components are kept, so that the freckle removing medicinal liquid is formed. After the face is wiped by using the medicinal liquid, dust on the face and metabolic wastes in pores are effectively removed by virtue of the drug efficacy, the medicinal liquid is permeated into the skin to destroy various pigment cells, inhibit the activities of tyrosine and tyrosinase, inhibit the formation of various pigment granules and change the structures of the pigment granules, and thus, toxins in the cells are removed, the microcirculation of a skin layer is smoothened, and skin pigment deposition is effectively prevented and relieved. The freckle removing medicinal liquid can be used for dissolving freckles, relieving freckles, slowly shortening and attenuating pores, whitening the skin color of the face and ensuring that the face becomes smooth and elastic, and finally, the freckles on the face are thoroughly removed. The medicinal liquid disclosed by the invention has no side effects and is remarkable in freckle removing effect, stable in effect and free of rebound.

The invention discloses a multipurpose nanometer pigment-based colorant and a preparing method thereof, and aims at solving the problem of environmental pollution of pigment-based colorants. The colorant comprises the following raw materials on a weight basis: 76-84% of propylene glycol ether environmentally friendly solvents, 8-12% of organic pigments or carbon black pigments, 4-6% of high molecular unsaturated polycarboxylic acid, 4-6% of polyurethane modified high molecular compounds. The method for preparing the colorant comprises the following steps: adding the propylene glycol ether solvent into a stirred tank; adding the high molecular unsaturated polycarboxylic acid, stirring the mixture and mixing well; adding the pigment, stirring the mixture and mixing well; adding the polyurethane modified high molecular compound, stirring the mixture and disperse for proper time; adding the materials into a grinder for ultrafine grinding until the granularity of pigment granules meets nanometer specification size, stopping grinding, and discharging. The colorant can be used for a pigment-based colorant in a plurality of fields such as printing ink, printing and dyeing, paint, etc.

The invention discloses a formula and process of green, orange and purple natural fat-soluble color paste. According to the formula and process of the green, orange and purple natural fat-soluble color paste, yellow and blue water-soluble pigments are extracted from gardenia jasminoides and clitoria ternatea Linn., red oil-soluble pigments are extracted from radix arnebiae seu lithospermi, and thegreen, orange and purple color paste is compounded. There is no need to purify the pigments through chemical components, the making flow of color oil color paste is simplified, and the safety of thepigments is improved. When the oil-soluble color paste is extracted, water is taken as an extracting solvent in the pigment extracting process, impurities are removed through a gauze filtering mode, and after the extracted pigments are made into toner at low temperature, soybean lecithin and natural coco butter are added to make the color paste. The made color paste has an excellent color developing effect in pure coco butter chocolates, and is uniformly dissolved in white chocolates, the finished product does not contain pigment granules, the quality is stable, no obvious pigment exists, andthe flavor of food materials is extracted.

The invention relates to a method for preparing an easily filtered EVA (ethylene vinyl acetate) wax-based composite spherical pigment yellow 14. The method comprises the following steps: in a water-phase suspension of a pigment yellow 14 after a coupling reaction for preparing the pigment yellow 14, controlling the temperature to 75-90 DEG C, and adding a pretreated EVA wax while stirring; and performing mixing and adsorption on suspended pigment granules in a water phase with the EVA wax, so as to obtain the spherical pigment yellow 14 of a core-shell structure. The pigment yellow 14 providedby the invention is a spherical granular substance and is easy to filter, and the vacuum suction filtration time is only 1-3 minutes; meanwhile, the surface of the pigment adsorbs a small amount of water, and the water content of a wet filter cake of the pigment after vacuum suction filtration is 10-20%, so that the pigment is easy to filter and easy to dry and only needs to be dried for 2 hoursin an oven of 45-50 DEG C; after being dried, the pigment granules are loosened, are not caked and are easy to crush; and the pigment preparation process is simple and convenient in operation, water-saving and energy-saving and applicable to industrial production; and the pigment tinting strength is 110% or greater.

The invention discloses a cleanser for colored plastic processing equipment. The cleanser includes polystyrene resin, polypropylene resin, styrene-butadiene-styrene segmented copolymer resin, calcium carbonate master batches, a super-dispersant, and an antioxidant. In the invention, the calcium carbonate master batches are used instead of inorganic powder, so that powder floatation is reduced and production environment is improved, thereby reducing damage on environment and human body due to the powder. In addition, the styrene-butadiene-styrene segmented copolymer is used as a compatilizer for the polystyrene and the polypropylene, so that a problem of broken strips during extrusive granulation is reduced and production is easy to control. Finally, with addition of the super-dispersant, dispersion of pigment granules in residual batch products in the cleanser polymer is improved, so that emission speed of the residual pigment is increased. The cleanser is especially suitable for the colored plastic processing equipment.