494 results about "Pigment particle" patented technology

The invention discloses a preparation method of a permanent red pigment for an acid and alkali resistant coating, and belongs to the technical field of pigment preparation, a 2B acid derivative is diazotized and then coupled with 2-hydroxy-3-naphthoic acid, then a calcium chloride aqueous solution is added for color lake to obtain pigment particles, and finally the surfaces of the pigment particles are coated with silicon dioxide to obtain the permanent red pigment for the acid and alkali resistant coating. According to the permanent red pigment for the acid and alkali resistant coating prepared by the preparation method disclosed by the invention, the acid and alkali resistance and environmental stability of the pigment are further enhanced while the excellent characteristics of original pigment red 48: 2 are maintained, and the application performance of the pigment is remarkably improved.

The invention discloses a dispersing agent for water-based nano pigment color paste, and relates to the technical field of water-based paint preparation, the dispersing agent comprises 50-150 parts of a polyether modified polyol compound, 30-80 parts of modified polyacrylate, 10-50 parts of a nonionic surfactant, 5-30 parts of a thickener, 700-850 parts of an environment-friendly solvent and 5-20 parts of a surface modifier; the invention further discloses a preparation method of the dispersing agent for the water-based nano pigment color paste. The preparation method comprises the following steps: preparing materials; adding the polyether modified polyol compound into the stirring container; adding modified polyacrylate into the polyether modified polyol compound solution; a nonionic surfactant is added; adding a thickening agent from a natural plant source; adding an environment-friendly solvent; and adding a surface modifier. The dispersing agent disclosed by the invention not only can effectively disperse pigment particles and prevent agglomeration of the pigment, but also can maintain good flowability and proper viscosity of the pigment and ensure high stability of color paste.

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 methods for producing optical effect layers (OELs) exhibiting one or more indicia (×30) on a substrate (×20), said method comprising a step of exposing a coating layer (×10) comprising non-spherical magnetic or magnetizable pigment particles to a magnetic field of a magnetic-field generating device so as to orient at least a part of the magnetic or magnetizable pigment particles; a step of applying a top coating composition on top of the coating layer (×10) and in the form of one or more indicia (×30), and a step of at least partially curing the coating layer (×10) and the one or more indicia (×30) with a curing unit (×50).

The invention discloses a preparation method of an ultra-stable brush-shaped organic silicon microsphere coated modified pigment. The method comprises the following steps: weighing raw materials, preparing a pre-emulsified mixed solution, preparing a composite pigment of an organic silicon resin coated pigment, and preparing the brush-shaped organic silicon microsphere coated modified pigment. The preparation method is simple in process and easy to operate, diversified functions such as antibacterial property and specific adsorption resistance can be endowed to the brush-shaped composite pigment particles by selecting or combining the grafting monomers, the stability of the composite pigment particles can be further improved through hydrophilic groups rich in a grafted polymer chain, and the service life of the composite pigment particles is prolonged. The organic silicon resin layer with various excellent performances such as UV radiation resistance and corrosion resistance can also improve the performance of the coated pigment in a specific application system, and the brush-shaped composite pigment particles prepared by the method have a wide application prospect in the field of industrial products such as high-quality functional coatings and the like.

A film coating for keratin fibers is described. The film coating is produced by applying to the keratin fibers a pretreatment composition and a film forming composition and curing the compositions to produce the film coating. The coating may be clear and function as a styling, conditioning and holding. The coating alternatively may contain pigment particles and provide a color coating.

The invention belongs to the field of hyperdispersants, and particularly relates to an acrylate hyperdispersant for preventing flooding of a coating and a preparation method of the acrylate hyperdispersant. The preparation method comprises the following steps: synthesizing a first functional monomer, synthesizing a second functional monomer and synthesizing the acrylate hyperdispersant. According to the acrylate hyperdispersant disclosed by the invention, a plurality of anchoring groups are provided for an inorganic pigment, an organic pigment and a carbon black pigment in a molecular structure, so that the dispersant can be well combined with pigment particles in a colored coating, and meanwhile, polyether and polyacrylate solvent chain segments are also provided, so that the stability among the particles is kept; therefore, the problem of flooding in the colored paint is effectively solved. Compared with the prior art in which a plurality of different types of dispersants are matched, the anti-floating agent has the advantages of very good anti-floating effect, simplicity and convenience in operation and wider application range.

The invention discloses a colored fluorescent particle for electrophoretic display, and relates to the field of photoelectric display, the colored fluorescent particle is of a core-shell structure, and the colored fluorescent particle sequentially comprises a core, a middle layer and a shell layer from inside to outside; the core is a pigment unit, the middle layer is a quantum dot layer coating the surfaces of pigment particles, the shell layer comprises one or more high-molecular polymers selected from polylauryl methacrylate and polymethyl methacrylate, and the surface of the middle layer is coated with the shell layer; the color fluorescent particles comprise intrinsic primary colors presented by the pigment units and compensation fluorescence excited by the quantum dot layer under light; and the compensation fluorescence is matched with the intrinsic primary color. In addition, the invention also provides a preparation process of the colored fluorescent particles. The colored fluorescent electrophoretic particle provided by the invention is pure and full in color and luster, and is more gorgeous in color under the excitation of ultraviolet rays.

The invention relates to a security marking (100), a method and a device for reading and decoding the security marking (100), a security document (150) marked with the security marking (100), and a method and a system for verifying and authenticating said security document (150). The security marking (100) comprises a machine readable marking (130) overlapping with a magnetically induced layer (120) of a material including magnetically oriented reflective platelet-shaped magnetic or magnetizable pigment particles with two zones (120a) and (120b) of distinct orientations of the particles. The encoded data on the machine readable marking (130) being decodable only after the data separately read from the two zones (120a) and (120b) are gathered.

Mixtures are disclosed containing a plurality of charged pigment particles and a one or more charge control agents. At least one of the charge control agents has a chemical structure that includes a cationic head group, such as an ammonium cation or an iminium compound, and a non-ionic, polar functional group, other than an acyclic secondary amide group. The mixtures are useful as dispersions for forming electrophoretic media that may be incorporated into electrophoretic displays. Alternatively, the dispersions may be useful for forming electrophotographic toners and dispersions for other printing applications.

The invention relates to the technical field of auxiliary chemicals, in particular to a waterborne dispersing agent based on an acrylic block copolymer and a preparation method of the waterborne dispersing agent. The prepared aqueous dispersant is prepared by polymerizing an acrylic acid hard monomer, a soft monomer, a functional monomer containing double bonds, a phosphate monomer and a reactive emulsifier at a mild temperature through a pre-emulsification-synchronous dropwise adding process. A phosphate group and an epoxy group are introduced to achieve a synergistic effect, so that efficient anchoring and wetting of pigment particles are realized; when being applied to pigment color paste, the viscosity reducer shows excellent viscosity reduction capacity and storage stability, and the coloring strength and glossiness are remarkably improved; the preparation process is simplified and efficient, the energy consumption is greatly reduced, and the method is suitable for high-performance environment-friendly color paste production in the fields of printing ink, coating and the like.

The invention discloses a color-adjustable flake-like low-emissivity coating and a preparation method, and relates to the technical field of functional coatings, the preparation method comprises the following steps: step 1, mixing an organic solvent, micron spherical aluminum powder and micron pigment particles according to a certain proportion to obtain mixed powder; step 2, adding the ball-milled beads in the step 1 and the mixed powder into a ball-milling tank for ball-milling to obtain slurry A; 3, mixing and dispersing the slurry A obtained in the step 2 and organic silicon resin to obtain slurry B; and 4, spraying and curing the coating B obtained in the step 3 to obtain the color-adjustable flaky aluminum powder low-emissivity coating. The emissivity of the prepared coating is lower than 0.35, the lightness is about 70 + / -0.5, the binding force is about 4.0 + / -0.4 Mpa, and the coating can resist the high temperature of 500-600 DEG C and is used for meeting the visible light and infrared stealth requirements of ground equipment.

The invention belongs to the technical field of organic dyes, and particularly discloses a high-dispersity phthalocyanine pigment and a preparation method thereof. The preparation method of the phthalocyanine pigment comprises the following steps: (1) ultrasonically dispersing a silane coupling agent and graphene oxide in a solvent to prepare modified graphene oxide; and (2) dispersing the modified graphene oxide, polyethylene glycol and a copper phthalocyanine pigment in an organic solvent, and carrying out a heating reaction to obtain the high-dispersity phthalocyanine pigment. Organophilic groups in the long straight carbon chain silane coupling agent can be physically wound with copper phthalocyanine organic molecules, so that the graphene oxide is bonded with an interface of the copper phthalocyanine pigment, and the capability of dispersing the copper phthalocyanine pigment by the graphene oxide is greatly improved. The molecular structure of the polyethylene glycol has a plurality of oxygen-containing anchoring functional groups, so that the defects of the modified graphene oxide dispersing agent can be made up, the spatial repulsive force among copper phthalocyanine pigment particles is enhanced, and the dispersion stability of the copper phthalocyanine pigment is enhanced.

An ink jet ink composition contains a metal pigment and at least one liquid medium selected from the group consisting of organic solvents and water. The metal pigment is surface-modified with a surface treatment agent. The metal pigment is in the form of scale-like particles and has a volume average particle size D50 of 1.0 μm or less. The ratio D50 / Z of the volume average particle size D50 of the metal pigment to the average thickness Z of the metal pigment particles is 17 or more, and the ratio D50 / L of the volume average particle size D50 to the nozzle diameter L of the ink jet head is 0.050 or less.

The utility model discloses a mixing device for gun black coloring agent production, which comprises a support, and a stirring tank is fixedly mounted on one side of the support. According to the technical scheme, the rotating rod, the stirring rod, the motor, the first gear, the second gear, the feeding pipe and the particle pump are adopted, a feeding cover is opened, resin is poured into the stirring tank from a feeding port, the particle pump and an electromagnetic valve on the feeding pipe are opened, pigment particles are fed into the rotating rod through the feeding pipe, and then the pigment particles enter the stirring rod; a material enters a stirring tank through a discharging hole in a stirring rod, a motor is started, the motor drives a first gear to rotate so as to drive a second gear to rotate, the second gear is spirally connected with a rotating rod, the second gear rotates so as to drive the rotating rod to rotationally ascend, and the motor rotates forwards and backwards so as to drive the rotating rod to rotationally ascend and rotationally descend; therefore, the stirring rod is driven to rotationally ascend and rotationally descend for scattering, the scattering area of pigment particles is larger, mixing is more uniform through the stirring rod, and the mixing efficiency is improved.

The invention belongs to the technical field of pigments for water-based systems, and particularly relates to a pigment modifier for a water-based system and application of the pigment modifier for the water-based system, 4-aminobenzylphosphonic acid is adopted as the pigment modifier for the water-based system, and-PO3H2 hydrophilic groups are grafted to the surfaces of pigment particles through specific diazotization reaction of the pigment modifier for the water-based system, so that the pigment modifier for the water-based system is obtained. The organic pigment is endowed with electrostatic stability in a water-based system, so that the pigment can form a stable water-based dispersion under the condition of not using an additional dispersing auxiliary agent, and the brilliance and tinting strength of the pigment are further improved.

The present disclosure relates to an aqueous inkjet ink including pigment particles, a surfactant, and an organic solvent, wherein: the pigment particles include a pigment and a pigment dispersion resin; the pigment dispersion resin has a crosslinked structure; the surfactant includes an acetylenediol-based surfactant (A-1) having an actually measured HLB value of 6-9 and a siloxane-based surfactant (A-2) having an actually measured HLB value of 8-14; and the organic solvent includes an alkanediol having 5-8 carbon atoms (but excluding 1,2-alkanediol having 5-8 carbon atoms) and / or a (di)propylene glycol monoalkyl ether represented by a specific structural formula.

The invention relates to pigment dispersion liquid and provides copper phthalocyanine pigment dispersion liquid as well as a preparation method and application thereof. The copper phthalocyanine pigment dispersion liquid provided by the invention comprises the following components in percentage by weight based on the total weight of 100%: 5-25% of a modified pigment, 5-25% of a solvent and the balance of a solvent, 3%-30% of a first dispersant; 50%-85% of a solvent; and 0.5%-15% of polyacrylate. The modified pigment comprises a copper phthalocyanine pigment and a surface modifier attached to the surface of the copper phthalocyanine pigment, wherein the surface modifier contains polar groups; the first dispersant contains an amino group. According to the copper phthalocyanine pigment, polar groups are introduced to the surfaces of the copper phthalocyanine pigment molecules through the surface modifier, the polarity difference between pigment particles and a dispersion medium is improved, agglomeration of the pigment particles is effectively prevented, and the copper phthalocyanine pigment dispersion liquid is dispersed more uniformly. Amino groups in the first dispersing agent can form hydrogen bonds with polar groups adsorbed on the surface of the copper phthalocyanine pigment, and the hydrogen bonds further promote dispersion of pigment particles in the medium.

The invention discloses high-efficiency washing desalting equipment for pigment slurry, which is applied to the technical field of chemical environmental protection and can adapt to slurry with different viscosities through an adjustable spacing design, slurry flowing is accelerated through a pore channel, salt diffusion can be enhanced through a pressure gradient formed by a stepped layout, a gradient pressure field is formed, salt ions are promoted to diffuse to washing water, and the salt ions are effectively removed. Meanwhile, slurry splashing is avoided, and process optimization is achieved completely through mechanical adjustment; gradual filtration is carried out, large particles are rapidly intercepted by the rough filtration section to protect a subsequent filter screen, thorough separation of salt is ensured by the fine filtration section, and stirring blades and centrifugal force synergistically act to prevent filter holes from being blocked and promote solid-liquid separation, so that pigment particles and a salt solution form two-channel output which is very distinct from each other, the desalting efficiency is remarkably improved, and meanwhile, the pigment recovery rate is kept; automatic material grading is achieved only through a mechanical structure in the whole process.

The application discloses a kind of color fluorescent particles for electrophoretic display, it is related to the field of photoelectric display, color fluorescent particle is core-shell structure, color fluorescent particle includes successively from inside to outside: core, intermediate layer and shell layer;Core is pigment unit, intermediate layer is quantum dot layer coated on the surface of pigment particle, shell layer includes high molecular polymer selected from one or more of polymethyl methacrylate lauryl, polymethyl methacrylate, and is constituted, shell layer is coated on the surface of intermediate layer;Color fluorescent particle contains intrinsic base color presented by pigment unit and compensation fluorescence excited by quantum dot layer receiving light;Compensation fluorescence is compatible with the color of intrinsic base color.In addition, the application also provides the preparation process of color fluorescent particle.The color fluorescent electrophoretic particle provided by the application is pure and full of color, and the color is more brilliant under ultraviolet excitation.

The invention discloses an impurity removal device for iron oxide pigment particles. The impurity removal device comprises a main body structure, a lower row structure and an upper row structure, the lower-row structure is fixedly arranged in the main body structure, the upper-row structure is fixedly arranged on the main body structure, and the upper-row structure is located above the lower-row structure. The iron oxide pigment processing equipment has the characteristics of rapid and uniform mixing, density distinguishing, distinguishing, filtering and separating, controllable structure and convenient equipment maintenance; according to the scheme, the vibration motor is adopted to drive vibration for mixing, and meanwhile, the lifting seats in the lower-row structure are driven to alternately or synchronously lift in a reciprocating manner; due to the synergistic effect, the pigment can be subjected to multi-directional acting force in the medium and can be more fully contacted with the medium, so that the mixing speed and the uniformity are greatly improved, and the separation can be more accurately carried out according to the sinking and floating characteristics of the material; when the equipment is cleaned and maintained, each part can be cleaned, replaced and checked independently and conveniently.

The invention belongs to the technical field of high polymer material coloring, particularly relates to a nylon composition as well as a preparation method and application thereof, and particularly discloses a nylon composition which comprises the following components in parts by weight: 93-99 parts of nylon; 0.02 to 0.05 part of pigment red; 0.5 to 5 parts of PE; 0.5 to 10 parts of EVA (ethylene vinyl acetate); and 0.1-2 parts of an auxiliary agent. The preparation method can be used for preparing electric tool parts, has the effect of preventing pigment particles and amido bonds of nylon from generating hydrogen bond interaction to cause a pigment-dye phenomenon, solves the problem of fluorescence of the pigment in the nylon, and realizes color recovery. According to the technical scheme, the use amount of the pigment can be greatly reduced, the color matching cost is saved, the cost benefit is remarkably improved, and the application range of other coloring agents in polar plastics is widened.

Provided is a water-based inkjet ink that is excellent in continuous ejection stability and straight ejection, and that provides excellent print density and print quality for prints on various printing substrates, particularly paper substrates, and further has good resolubility. [Solution] The aqueous inkjet ink comprises pigment particles including a pigment and a pigment dispersing resin that covers at least a portion of the surface of the pigment, an acetylene diol surfactant (B-1) having a measured HLB value of 6 to 9, a siloxane surfactant (B-2), an alkanediol having 3 to 4 carbon atoms, an alkanediol having 5 to 8 carbon atoms, and a glycol ether having 4 to 10 carbon atoms, wherein the pigment dispersing resin comprises a crosslinked reaction product of a polymer (A-1) that has an aromatic ring and an acid group and an acid value of 50 to 160 mg KOH / g, and a compound (A-2) that has multiple glycidyl ether groups in one molecule, and the compound (A-2) is blended in an amount that results in a glycidyl group content of 50 to 200 mol %.

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.

Described herein are solid pigment dispersions that are formulated into a paste consistency during milling to reduce pigment particle size and form a dry granular consistency that is pourable and easy to handle at ambient temperature. This results in stronger, more intense color that can be easily incorporated into a variety of cosmetic products. These pigment dispersions are prepared with plant-derived materials that are derived from naturally occurring, renewable sources.

The utility model discloses a high-strength hot stamping foil which comprises a base film layer, a hot melt adhesive layer, an aluminum layer, a pigment layer and a protective layer which are sequentially stacked, the base film layer is a modified polyester film, and the surface of the aluminum layer is provided with a micropore structure; the pigment layer is composed of nano pigment particles, and the protective layer is a modified polyurethane coating. According to the utility model, the base film layer improves the mechanical strength and tensile property of the hot stamping foil, so that the hot stamping foil is not easy to deform or break under the action of high temperature and mechanical stress; the hot melt adhesive layer improves the bonding strength and heat resistance of the hot melt adhesive; the protective layer can effectively prevent the hot stamping foil from being abraded due to friction in the using process.

The invention belongs to the field of pigment color paste, and particularly relates to a modified coloring agent with a triazine structure and application of the modified coloring agent. The structure of the modified colorant is shown as a general formula D1, and the anchoring group L anchors the modified colorant on the surfaces of pigment particles in a physical adsorption or chemical bond form to realize surface modification of the pigment. According to the modifier colorant, the hydrophilicity or lipophilicity of the pigment can be effectively regulated and controlled by adjusting the variety and number of triazine substituent groups, the nano pigment paste treated by the modifier has self-dispersing performance, other auxiliaries do not need to be added, the dispersity, stability and filterability of the nano pigment paste can be effectively improved, and the nano pigment paste can be used for preparing the nano pigment paste. And the coating has excellent coloring ability.

The utility model discloses a historical building outer wall grey sculpture repairing and toning preparation device, which belongs to the technical field of toning preparation and is technically characterized by comprising a main body assembly, a crushing assembly, a stirring assembly and a filtering assembly. According to the pigment preparation device, when pigment preparation is carried out, large pigment blocks can be firstly placed in the crushing assembly, the large pigment blocks can be ground by operating the crushing assembly, so that the large pigment blocks are crushed into small particles, and after crushing is completed, various pigment blocks can be stirred and mixed through the stirring assembly; after mixing, pigment particles can be filtered through the filtering assembly, so that pigment blocks still containing large particles are avoided, and the pigment blocks can be taken out for use after being filtered.

The present invention provides an inkjet ink comprising: a continuous aqueous phase; a dispersed encapsulated pigment comprising pigment particles encapsulated by a cross-linked polymer having pendant hydrophilic groups including hydroxyl groups; and a cross-linking agent comprising two or more protected isocyanate groups obtainable by reacting an isocyanate having three or more isocyanate groups, an isocyanate blocking agent and a non-ionic diol. The present invention further provides method of inkjet printing comprising the following steps in order: (i) providing an inkjet ink of the invention; (ii) inkjet printing the inkjet ink onto a substrate to provide a printed substrate; (iii) drying the printed substrate to remove water; and (iv) deprotecting the two or more protected isocyanate groups. The present invention further provides a dispersion and a printed substrate having the inkjet ink of the invention printed thereon.

The utility model relates to a fabric washing resistance testing device, which comprises a base, a water storage cavity, a water inlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe and is characterized in that the left side of the top of the base is provided with a circular groove; the impeller washer is mounted in the circular groove and used for washing the fabric; the water changing assembly is arranged at the bottom of the base and used for changing water for the impeller washer. The utility model relates to the technical field of fabric performance detection. According to the testing device for the washing resistance of the fabric, through the arranged filtering assembly, when sewage makes contact with a filtering plate, most pigment particles in the sewage can be adsorbed through the filtering plate, so that water becomes clear again, and the situation that the subsequent fabric washing detection effect is affected due to continuous use of washing water is avoided; along with the gradual increase of the water level in the water storage cavity, the floater moves upwards again, and the next turn of fabric washing can be started until the buzzer alarm gives an alarm again, so that water resources can be effectively saved.

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.