54 results about "Pigment particle" patented technology

The application provides a triarylmethane derivative, a pigment dispersion liquid, a preparation method thereof and a photoresist, and relates to the field of photoresists. The structural general formula of the triarylmethane derivative is: wherein X1 is selected from one of long-chain alkyl groups with a length of C1-C12, X2 is selected from hydrogen or an alkyl group, X3 is selected from one of H, an alkyl group and an aromatic group, and Q is selected from one of a carboxyl group, a sulfonic acid group and a phosphoric acid group. The triarylmethane derivative can generate strong van der Waals force and pi-pi conjugation effect with pigment molecules in a colorant by virtue of the large-plane conjugated triarylmethane skeleton, so as to be firmly anchored on the surface of the pigment particles; the strong polar functional groups such as the sulfonic acid group in the molecular structure of the triarylmethane derivative are combined with the alkaline dispersant, the side long-chain alkyl groups fully act on the dispersion medium, and the re-aggregation of the nano pigment particles is effectively prevented through strong steric hindrance and electrostatic stabilization mechanism, so that the problem of poor dispersion stability is solved.

This utility model relates to the field of ink production technology, specifically to a multi-compartment automated storage system for color ink raw materials, comprising: a support frame; a pneumatic conveying box disposed inside the support frame, the pneumatic channel of the pneumatic conveying box being fixed to the support frame, and multiple openings on the top of the pneumatic conveying box; and multiple pigment storage compartments detachably connected to the support frame. The nano-pigment particle storage device proposed in this application connects multiple color pigment storage compartments to the pneumatic conveying box. A pull plate component controls the quantitative delivery of target color pigment particles into the pneumatic conveying box, and then high-pressure gas is input to transport the pigment particles to a mixing container. This method of storing and transporting pigment particles is far less costly than the existing method of storing pigment particles using organic dispersants, and by dispersing on demand, it avoids the problems of uneven concentration and clumping caused by long-term storage.

This utility model relates to the field of water-based pigment paste preparation, and discloses a high-efficiency dispersion device for preparing water-based pigment paste, including a tank body. A pretreatment tank is fixedly connected to the top of the tank body, and a feeding cylinder is fixedly connected to the right side of the pretreatment tank. The bottom of the feeding cylinder is connected to the right side of the pretreatment tank through a connecting pipe. A processing mechanism is provided inside the pretreatment tank. The processing mechanism includes a screw, which is threadedly connected to the inner wall of the pretreatment tank. A pressure plate is rotatably connected to the bottom of the screw, and the pressure plate is slidably connected to the inner wall of the pretreatment tank. In this utility model, the drive motor drives the second extrusion block to rotate relative to the first extrusion block. The serrated extrusion surfaces of the first and second extrusion blocks perform preliminary crushing, extrusion, and dispersion of the raw material. At the same time, the porous structure of the through holes promotes material flow and forms turbulence, accelerating the contact wetting of pigment particles with the dispersion medium.

The invention relates of UV-Vis radiation curable coating compositions comprising magnetic or magnetizable pigment particles and methods for producing optical effect layers (OELs) comprising magnetically oriented magnetic or magnetizable pigment particles and the use of said OELs as anti-counterfeit means on security documents or security articles as well as decorative purposes. The UV-Vis radiation curable coating compositions comprises one or more (meth)acrylate monomers, one or more cyclic ether compounds, one or more vinyl ether compounds, one or more photoinitiators, one or more thermoplastic polymers and non-spherical magnetic or magnetisable pigment particles.

The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides processes for producing optical effect layers (OELs) comprising at least a first motif and a second motif being at least partially adjacent to each other, each of said motifs independently comprising magnetically oriented platelet-shaped magnetic or magnetizable pigment particles.

Provided are oil-based cosmetic compositions and water-in-oil emulsion cosmetic compositions that ensure the dispersibility of the blended surface-treated pigment particles while inhibiting the exudation of the pigment particles (i.e., excellent oil resistance). One composition, being an oil-based cosmetic composition or a water-in-oil emulsion cosmetic composition, comprises, as an oil phase component, (A) surface-treated pigment particles, (B) a silicone-based film-forming agent, and (C) an oil component, wherein the surface-treated pigment particles are particles surface-treated with an ester compound formed from fatty acids having 8 to 20 carbon atoms and glycerol, and the oil component comprises at least one of volatile oil components and non-volatile oil components.

This invention relates to a method for preparing a highly adhesive, water-retaining, hyperspectral camouflage coating, belonging to the field of hyperspectral camouflage technology. The method involves preparing a mixed solution by adding water-containing microcapsule particles and monochromatic pigment particles to a polymer resin substrate solution, followed by vacuum degassing, and then applying the film layer onto the substrate using a blade coating method. After curing, the camouflage coating is obtained. The camouflage coating can precisely mimic the visible-near-infrared spectral characteristics of vegetation backgrounds, with a Pearson similarity coefficient of no less than 96% with the target vegetation spectrum. It also possesses excellent water retention properties, stably reproducing the typical water absorption valley spectral characteristics of vegetation. Furthermore, the coating exhibits strong adhesion to the substrate, good environmental adaptability, and high application value.

This invention relates to the field of image processing technology, and more specifically, to an intelligent contour analysis method for benzimidazolone pigment particles based on a graph search algorithm. The method includes: acquiring a grayscale image using an electron microscope and performing binarization segmentation; constructing a particle distance map based on Euclidean distance transformation; analyzing the curvature features of pixels in the particle distance map using the Hessian matrix to obtain the probability that a pixel in the particle distance map belongs to the core skeleton of the particle; extracting contour depression points based on the closed contour of the particle region; calculating the adhesion penalty intensity of each pixel in the particle distance map; accurately locating seed points by combining the skeleton probability and penalty intensity; and achieving precise cutting of adhered particles by constructing a graph model containing specific edge weights, using the seed points and background as constraints. This invention solves the problem of over-segmentation or under-segmentation caused by severe adhesion of pigment particles, improving the accuracy of contour recognition.

A process for producing a treated, titanium dioxide pigment for use in a polymer composition is provided. The process comprises providing a plurality of titanium dioxide pigment particles, each of the particles having a surface, and depositing an organic treating agent on the surfaces of the pigment particles in an amount in the range of from about 0.2% to about 2% by weight, based on the weight of the pigment particles. The organic treating agent includes at least one medium-chain triglyceride. A treated, titanium dioxide pigment for use in a polymer composition, and a polymer composition, are also provided.

The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides processes for producing optical effect layers (OELs) comprising at least a first motif and a second motif, each of said motifs independently comprising platelet-shaped magnetic or magnetizable pigment particles oriented according to a specific magnetic pattern, wherein said first motif and second motif have different magnetic orientation patterns and are at least partially adjacent and in proper register.

This invention discloses a red pigment paste for color photoresist and its preparation method, relating to the field of photoresist technology. The red pigment paste for photoresist comprises the following materials: modified pigment red 177, propylene glycol methyl ether acetate, poly(methacrylic acid-co-acrylate) copolymer, acrylate resin, styrene-maleic anhydride copolymer, and antioxidant. This invention, by adding modified pigment red 177, works synergistically with the poly(methacrylic acid-co-acrylate) copolymer and polydimethyldiallyl ammonium chloride to inhibit pigment particle agglomeration, ensuring uniform dispersion of the pigment in the propylene glycol methyl ether acetate solvent, thus guaranteeing uniform and fine dispersion of the pigment paste. The antioxidant in this invention includes β-cyclodextrin, which can coat pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and UV-327, improving the compatibility of the pigment paste system and extending the storage life of the pigment paste.

This invention relates to a method for preparing easily dispersible pigments using graphene-modified CI Pigment Red 179. Monolayer graphene or monolayer graphene oxide powder and a solvent are added to water and stirred to mix. CI Pigment Red 179 is then added, and the mixture is stirred and slurried to obtain a pigment slurry. A nonionic surfactant is added, and the mixture is stirred and slurried again. The slurry is then dispersed by grinding in a sand mill. An anionic surfactant is added to the dispersed slurry, and the mixture is dried in a spray dryer to obtain an easily dispersible pigment. The easily dispersible pigment obtained by this invention using graphene-modified CI Pigment Red 179 exhibits high tinting strength, small particle size, more concentrated particle size distribution, and good dispersibility when used in coatings and inks. The tinting strength can reach 129%, the average particle size is reduced from 24.140 μm to 4.482 μm, the particle size distribution is more concentrated, and soft, easily dispersible pigment particles are obtained.

This utility model discloses a high-stability paint mixing device, relating to the field of paint mixing technology. The device features a stirrer that rapidly mixes the paint in a mixing tank while simultaneously activating a circulation pump. The circulation pump draws paint from the mixing tank through a circulation pipe and discharges it back into the mixing tank. This facilitates thorough mixing of the paint within the tank and prevents pigment particles from agglomerating due to a lack of dispersant protection, thus preventing pigment particle sedimentation and maintaining a stable dispersion of the paint system. An electric heating element heats water to maintain the paint temperature, keeping the mixing environment temperature between 15-30°C. This prevents the paint viscosity from increasing or volatile components from evaporating too quickly, which could affect stability.

The present invention relates to a method for producing a cosmetic titanium dioxide pigment particle comprising the steps of: a) providing an uncoated titanium dioxide pigment particle, and b) coating the uncoated titanium dioxide pigment particle with a bio-based oil to produce a cosmetic titanium dioxide pigment particle, and to a cosmetic titanium dioxide pigment particle comprising a titanium dioxide pigment particle coated with a bio-based oil, wherein the cosmetic titanium dioxide pigment particle comprises a titanium dioxide pigment particle coated with 0.01 wt.% to 0.5 wt of a bio-based oil based on the total weight of the cosmetic titanium dioxide pigment particle.

Embodiments of the present application relate to a solar module and a method for producing the same. The solar module comprises a front glass plate disposed on a light incident side of the solar module; a back glass plate disposed on a side of the solar module opposite to the front glass plate; an absorber stack layer disposed between the front glass plate and the back glass plate; a first encapsulation film and a second encapsulation film, disposed between the front glass plate and the absorber stack layer; and a transparent or translucent modified polyester film with flake-like effect pigment particles and color pigments, the transparent or translucent modified polyester film being disposed below the first encapsulation film and over the second encapsulation film.

The application discloses a Z-type four-arm RAFT superdispersant and a preparation method and application thereof. The superdispersant is constructed by sequentially introducing monomers such as N-vinyl pyrrolidone, methoxy polyethylene glycol acrylate and butyl acrylate into a Z-type four-functional macromolecular RAFT reagent as a core through a RAFT controlled polymerization technology to form an amphiphilic block copolymer. In addition, monomers such as styrene, methyl methacrylate and acrylic acid can be selected and combined to optimize the performance of the dispersant. The four-arm superdispersant can be efficiently adsorbed on the surface of pigment particles due to the multi-anchor point structure, so that the grinding efficiency and dispersion stability are significantly improved; the hydrophilic polyethylene glycol segment inhibits particle agglomeration through a steric hindrance effect, and the hydrophobic block enhances the interfacial bonding force with the pigment. Further, the pigment after grinding is coated with styrene to form a dense polymer layer, so that the ink has excellent rheological properties and storage stability.

Provided is an ink composition that is excellent in bleed prevention and wiping resistance and is suitable for industrial production. The present invention relates to a composite coloring particle including a resin particle having a positive charge on the surface of the particle and a pigment particle having a negative charge on the surface of the particle, the aforementioned resin particle and the aforementioned pigment particle being complexed by electrostatic interaction, and an aqueous ink composition in which the aforementioned composite coloring particle is dispersed in an aqueous medium, and a writing instrument equipped with the aforementioned aqueous ink composition. Furthermore, the present invention relates to a method for producing a composite coloring particle, including a complexing step of mixing a resin emulsion including a resin particle having a positive charge on the surface of the particle and a pigment dispersion including a pigment particle having a negative charge on the surface of the particle.

This invention relates to the field of magnetic components and methods for producing optical effect layers (OELs) on a substrate, the OEL comprising magnetically oriented non-spherical magnetic or magnetizable pigment particles. In particular, this invention relates to magnetic components and methods for producing said OELs as anti-counterfeiting measures on secure documents or security articles, or for decorative purposes.

An electrophoretic medium containing a plurality of charged pigment particles, a charge control agent, and a nonpolar liquid is disclosed. The charge control agent has a molecular structure comprising a quaternary ammonium functional group or an imidazolium cation, a hydrophobic tail, and a counterion, wherein the counterion is an anion, the anion is a conjugate base of an acid, and the acid has a pKa of -2.5 or less.

The objective of this invention is to provide an oil-in-water emulsion cosmetic composition that stably incorporates pigment particles surface-treated with a metal soap-based surface treatment agent into emulsion particles, exhibits excellent high-temperature stability, and also demonstrates excellent usability (especially a moisturizing feel). The solution is an oil-in-water emulsion cosmetic composition comprising an oil phase and an aqueous phase. The oil phase comprises at least a portion of pigment particles surface-treated with a metal soap, isostearic acid, and a liquid oil, wherein the pigment particles are dispersed in the liquid oil, and at least 50% by mass of the liquid oil is volatile silicone oil.

The present application belongs to the technical field of color paste dispersant, and particularly relates to a dispersant for water-based nano color paste and a preparation method thereof. In the present application, inorganic two-dimensional nanosheets are used as rigid carriers, amino groups are introduced through amino-containing silane coupling agents, a step-by-step grafting strategy is adopted, carboxyl groups in the anchoring group are activated by EDC / NHS first, and then react with the amino-functionalized nanosheets to form amide bonds, and then hydrophilic solvent chains terminated by carboxyl groups are grafted to obtain a bifunctional grafting dispersant; wherein the two-dimensional nanosheets are montmorillonite or graphene oxide, the anchoring group is a carboxylic acid compound containing an aromatic ring, and strong adsorption is achieved on the surface of the pigment through π-π stacking; the solvent chains extend into the aqueous phase to provide steric hindrance; the rigid nanosheet skeleton prevents the collapse of the solvent chains; the dispersant prepared by the method has high dispersing performance in the water-based nano color paste, can realize nano-level dispersion of pigment particles, and has excellent storage stability.

Provided is a cosmetic composition, which is a cosmetic composition in which pigment particles are mixed in an oil component, and which has improved secondary adhesion-free effects while improving the dispersibility of the pigment particles. A cosmetic composition including pigment particles surface-treated with an ester compound formed from a fatty acid having 8 to 20 carbon atoms and glycerin, an oil component including at least one silicone oil, and at least one of an organosilicon-based dispersant having an HLB value of 2.5 or greater and 7.5 or less and an amodimethicone dispersant.

An inkjet recording method includes a process of circulating ink and ejecting the ink from an inkjet head to give it to a recording medium, the number of white pigment particles, i.e., white large particles, in the ink having a particle diameter in the range of 0.8 μm to 5 μm is 1.00 x 10 4 cm 3 The above, the circulation flow path includes a circulation pipe that returns the ink to the inkjet head, the following speed ratio (1) is 5.0 x 10 3 or less and 1.4 x 10 5 or more. Vc is the circulation flow rate (cm / s) of the ink in the connection portion of the circulation pipe to the inkjet head, Vslp is the settling velocity (cm / s) of the white large particles defined by a prescribed formula, and Pn is the number of white large particles (particles / cm 3 ). The speed ratio (1) = Vc / (Vslp x log(Pn)).

An electro-optical device having an electrophoretic medium containing an organic electroactive compound is provided. An electro-optical device comprising an electrophoretic medium containing charged pigment particles, a charge control agent, an organic electroactive compound, and a nonpolar liquid is disclosed. The electrophoretic medium is contained within a plurality of microcells. The composition of the electrophoretic medium allows for a reduction in the residual voltage of the electro-optical device and the degradation of the device's electrodes and other components, even after operation using DC unequilibrium waveforms.

An electro-optical device having an electrophoretic medium containing an organic electroactive compound is provided. An electro-optical device comprising an electrophoretic medium containing charged pigment particles, a charge control agent, an organic electroactive compound, and a nonpolar liquid is disclosed. The electrophoretic medium is contained within a plurality of microcells. The composition of the electrophoretic medium allows for a reduction in the residual voltage of the electro-optical device and the degradation of the device's electrodes and other components, even after operations using DC unequilibrium waveforms.

A color electrophoretic display having an improved black optical state includes an electrophoretic medium having five types of charged electrophoretic pigment particles in a nonpolar fluid: first particles having a first optical property and a first charge polarity; second particles having a second optical property and an opposite second charge polarity having a first charge magnitude; third particles having a third optical property and the second charge polarity having a second charge magnitude smaller than the first charge; fourth particles having a fourth optical property and the second charge polarity having a third charge magnitude smaller than the second charge; and fifth particles having a fifth optical property and the second charge polarity having a fourth charge magnitude greater than the first charge. The first and fifth particles are white and black, respectively, and the second, third, and fourth particles are different from one another by one of cyan, magenta, and yellow, respectively.

This invention discloses a high-transparency core-shell composite pigment yellow 74, its preparation method, and its applications. Using nano-silica hollow microspheres as nucleating agents and structural carriers, a heterogeneous nucleation-in-situ coating mechanism is employed. During the coupling reaction stage, pigment molecules generated by diazonium salt coupling are induced to grow directionally and densely coat the microsphere surface, forming a stable core-shell structure with inorganic hollow spheres as the core and organic pigments as the shell. This invention significantly improves pigment utilization and transparency while maintaining a relatively unchanged hue, meeting the requirements for color stability in high-end applications. No organic dispersants or surfactants are added throughout the reaction process. The pigment particle size refinement and high transparency are achieved through structural design rather than additive modification, avoiding the defects caused by dispersant residues, such as poor system compatibility, reduced weather resistance, and increased production costs.

The present application provides a cosmetic composition in which dispersibility of surface-treated pigment particles is improved and in which the effect of preventing secondary adhesion is also improved. A cosmetic composition comprising: pigment particles that have been surface-treated with an ester compound of a fatty acid having 8 to 20 carbon atoms and glycerin; an oil component comprising at least one of a hydrocarbon oil and a polar oil; and at least one of a dispersant having an HLB value of 4.5 or less and an amodimethicone dispersant.

A method of manufacturing titanium dioxide (TiO2) pigment particles with an organic oil coating includes heating a mixer containing a charge of TiO2 pigment particles to an elevated temperature sufficient to lower the viscosity of the organic oil to close to the viscosity of water Organic oil is injected into the heated mixer through two-phase atomizer nozzle(s) while mixing the TiO2 pigment particles with the agitator. While mixing with the agitator, the heated TiO2 pigment particles and the injected organic oil are simultaneously chopped with the chopper to break up agglomerates formed by the mixture of the organic oil and the TiO2 particles. The mixer may then be cooled to a preselected temperature at which agglomeration of coated pigment particles substantially ceases while continuing to mix and chop the homogeneous mixture. The chopper is stopped when the mixer reaches the preselected temperature.

The utility model discloses a kind of washing machines to prevent dye mixing belong to textile machinery technical field, it includes: support platform, the top of the support platform is fixedly installed with washing machine body and pigment barrel, the top of the washing machine body is provided with double-shaft motor, the both ends output shaft of the double-shaft motor is fixedly installed with pulley one and bevel gear one respectively, the inside of the washing machine body is provided with rotary drum, the both ends of the rotary drum are fixedly installed with shaft, sufficient agitation can accelerate its dissolution process, make pigment particle fully dispersed in solvent, form stable dyeing solution. Like this can improve the utilization of pigment, reduce the adverse effect of unsolved pigment particle to finished garment, can effectively prevent residual pigment mixes into next dyeing operation, to ensure the purity and accuracy of each dyeing, facilitate the movement of device and reach specified area stable work.