1710results about "Organic dyes" patented technology

To provide a composition for forming a green coating film which exhibits excellent dispersibility and demonstrates excellent brightness and contrast ratio upon formation of the green coating film.SOLUTION: A composition for forming a green coating film of the present invention comprises: C.I. Pigment Yellow 150 and / or a derivative thereof; a phthalocyanine-based green pigment; a derivative represented by formula 1; an acidic dispersant having an acid value of 40 mgKOH / g or more and 90 mgKOH / g or less; and a solvent. R1 and R2 are independently hydrogen, an alkyl group, a benzyl group, a phenyl group, or the like.SELECTED DRAWING: None

The invention discloses a pillararene-based supramolecular polymer membrane, a preparation method thereof and application of the pillararene-based supramolecular polymer membrane in dye separation. The preparation method utilizes interfacial polymerization, and comprises the following steps: mixing a CH2Cl2 solution containing MeP5Bpy with an aqueous solution containing tetra (4-aminophenyl) methane and acetic acid, and standing to obtain the pillararene-based supramolecular polymer membrane at the interface of CH2Cl2 and the aqueous solution. The dye separation process is simple to operate and low in equipment requirement; rectification operation is not needed in the separation process, energy consumption is low, energy is saved, and the production cost is reduced.

An aqueous ultraviolet-absorbing resin emulsion, and an aqueous resin emulsion composition containing the emulsion is provided, wherein the emulsion is excellent in compatibility with a synthetic resin and light resistance. Also, the emulsion improves stability in blending with an aqueous emulsion of the synthetic resin, and prevents bleed out of the ultraviolet-absorbing resin on the surface of a coating film. Further, the aqueous ultraviolet-absorbing resin emulsion imparts excellent alkali or solvent resistance to a synthetic resin poor in alkali or solvent resistance. More specifically, an aqueous resin emulsion composition comprising (I) an aqueous ultraviolet-absorbing resin emulsion and (II) an other aqueous resin emulsion is provided, wherein the emulsion (I) is obtained by urethanizing (A) a polyol component having an ultraviolet-absorbing group {e.g., 1,1-bis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzeneethanol]methane}, (B) a polyol if necessary, (C) an alkyl or aryl dialkanolamine compound, and (D) an organic polyisocyanate in (E) an organic solvent, diluting the reaction mixture with (F) an organic solvent having a boiling point lower than 100° C. to give a resin solution, neutralizing the resin solution with (G) a neutralizing agent, and dispersing the resultant in water.

The invention provides a cellulose-based polymeric dye and a preparation method thereof. The preparation method of the cellulose-based polymeric dye comprises the following steps: adding a cotton fabric into a mixed solvent containing an inorganic base, urea and water, stirring to obtain a cellulose solution, adding a reactive dye into the cellulose solution, and reacting; the cellulose and the dye are dissolved through a homogeneous system, so that the hydroxyl activity of the cellulose and the dispersity and adsorbability of the dye can be improved, high loading of a dye chromophore on a cellulose polymer skeleton is realized, and the problems of low dye utilization rate, easiness in dye hydrolysis, water consumption, salt consumption and the like in the dyeing process are solved; the method is of great significance to improvement of economic benefits and sustainable development of the printing and dyeing industry.

The invention provides a method for preparing an alkali-resistant liquid disperse dye by an anti-solvent crystallization method, which comprises the following steps: dissolving an alkali-resistant disperse dye solid in a low-boiling-point solvent, ultrasonically heating to destroy the crystal structure of the dye, and filtering to obtain a dye solution; dissolving a crystal control agent and a dispersing agent in a high-boiling-point solvent to obtain an anti-solvent; slowly adding the dye solution into the anti-solvent, stirring, cooling, and removing the low-boiling-point solvent after dye crystals are stable; the anti-solvent method is applied to preparation of the alkali-resistant liquid disperse dye for the first time, and compared with a traditional grinding method, the method has the advantages of low energy consumption, simple equipment and less pollution; the prepared alkali-resistant liquid disperse dye has the advantages that the particle size can be as low as 130nm, the storage stability is good, the deep dyeing property is improved compared with that of the conventional alkali-resistant liquid disperse dye, the dye utilization rate is high, the dyeing soaping fastness is higher than level 4, the dyeing COD value is reduced compared with that of the conventional dye with the same strength, the use is convenient, and the dyeing process is simplified.

Bead-in-particles formats and their use in cytometric applications are described. In one aspect, the disclosure provides a bead-in-particle comprising an outer hydrogel body and an inner hydrogel bead. As described herein, the bead-in-particle is selectively tuned to have at least one morphological property substantially similar to subcellular macrostructures of interest present in a target cell. In one aspect of the disclosure, the bead-in-particle are used as a calibration reagent for the detection of a target cell in a sample, such as by image-based flow cytometry.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I):or a stereoisomer, tautomer or salt thereof, wherein R1, R2, R3, R4, R5, L1, L2, L3, L4, M1, M2, m and n are as defined herein. Methods associated with preparation and use of such compounds is also provided.

Compounds useful as fluorescent or colored dyes are disclosed. The compounds have the following structure (I), or a stereoisomer, tautomer or salt thereof, wherein R1, R2, R3, R4, R5, L1, L2, L3, L4, M1, M2, m and n are as defined herein. Methods associated with preparation and use of such compounds is also provided.

The invention relates to the technical field of data processing, in particular to a liquid disperse dye for polyester fabrics and a use method thereof, and the dye comprises an azo or anthraquinone disperse dye main agent subjected to superfine grinding, a nonionic and anionic compound dispersant system, a fiber plasticizer and a stabilizer. According to the preparation method, molecular dynamics simulation and mesoscale dissipative particle dynamics simulation are combined, the synergistic effect of a dispersant adsorption configuration and double electric layer potential is quantified, and a nonlinear association rule of dynamic particle size control and dispersion stability is established; a multi-physics field coupling model is adopted to integrate fiber humidity, temperature gradient and pressure distribution parameters, and cross-scale collaborative optimization of microscopic interface action and macroscopic process parameters is achieved. According to the method, repetitive experiment iteration is replaced by digital design, the formula development period is remarkably shortened, the dyeing uniformity and the batch-to-batch reproducibility are improved, and the method is suitable for continuous dyeing production of high-density and superfine polyester fabrics.

The invention relates to a gray dye composition, which consists of at least one yellow dichroic dye, at least one red dichroic dye, at least one purple dichroic dye and at least one blue dichroic dye, and has uniform total absorption in a visible light region when being mixed with a parent liquid crystal composition for use. The liquid crystal composition has high contrast when applied to light valves, switchable windows, switchable mirrors and guest-host displays.

The invention relates to polyester resin as well as a preparation method and application thereof. The polyester resin is prepared from the following raw materials: polybasic acid, polyhydric alcohol, an unsaturated monomer and a grafting modified monomer, the polybasic acid is selected from one or more of dimer acid, sebacic acid, adipic acid, dodecanedioic acid, 1, 4-cyclohexanedicarboxylic acid and hexahydrophthalic anhydride; the polyhydric alcohol is selected from one or more of neopentyl glycol, 1, 2-propylene glycol, 2-methyl-1, 3-propylene glycol, 2-butyl-2-ethyl-1, 3-propylene glycol, 2, 2, 4-trimethyl-1, 3-pentanediol, 1, 4-cyclohexanedimethanol, 1, 6-hexanediol and trimethylolpropane, and the polyhydric alcohol is selected from one or more of neopentyl glycol, 1, 2-propylene glycol, 2-methyl-1, 3-propylene glycol, 2-butyl-2-ethyl-1, 3-propylene glycol, 2, 2, 4-trimethyl-1, 3-pentanediol, 1, 4-cyclohexanedimethanol, 1, 6-hexanediol and trimethylolpropane. The polyester resin disclosed by the invention has excellent compatibility with acrylic resin.

A nanoscale molecularly imprinted polymer (MIP) thin film for small molecule detection, a method of manufacturing the same, and an electrochemical sensor using the MIP and quantum electrochemical impedance spectroscopy (EIS) are described. A plurality of specific recognition spaces for small molecules of 1000 Da or less are formed in the MIP, a receptor polymer is present at one end of the specific recognition spaces, a redox probe is present in a wire form, and the small molecule is a steroid hormone or a protein. The sensor is useful in point-of-care applications because it exhibits a rapid and reversible small molecule detection ability through a simple electrochemical regeneration process without cumbersome washing and solution replacement steps in the manufacturing process, thereby enabling continuous detection.

To provide a resin-treated pigment which enables production of a pigment dispersion liquid useful as a raw material for preparing ultraviolet curable inkjet ink that has low viscosity and excellent storage stability, in which a pigment is finely dispersed, even if a monomer having a comparatively small SP value is contained as a liquid medium.SOLUTION: A resin-treated pigment is obtained by adding a resin A having a constitutional unit (ii) represented by general formula (3) and having a quaternary chloride rate of 30 mol% or more, to a mixture containing an inorganic black pigment and a pigment derivative represented by general formula (1), and precipitating a resin B in which at least a part of the constitutional unit (ii) is converted into a constitutional unit (iv) represented by general formula (4). In the formulae, M is Na or the like, E is an organic pigment skeleton, C is O or NH, D is an ethylene group or the like, and X is Cl or the like.SELECTED DRAWING: None

The present invention provides a colored resin composition capable of forming high-brightness pixels. The colored resin composition of the present invention contains: (A) a colorant, (B) a solvent, (C) an alkali-soluble resin, and (D) a photopolymerization initiator, wherein the colorant (A) contains a zinc phthalocyanine dye (a1), and in a thin film X-ray diffraction spectrum of the zinc phthalocyanine dye (a1) using CuKα rays after heating at 230°C, the zinc phthalocyanine dye (a1) has a maximum peak in the range of a diffraction angle (2θ) of 2 to 5°.

The present invention provides a composite pigment, which comprises a first cholesteric liquid crystal pigment and a second cholesteric liquid crystal pigment. The above-mentioned first cholesteric liquid crystal pigment is a pigment having a center wavelength of a selective reflection band in the range of 400 nm or more and 800 nm or less and a selective reflection bandwidth of 150 nm or less. The above-mentioned second cholesteric liquid crystal pigment is a pigment having a selective reflection bandwidth of 200 nm or more in the range of 400 nm or more and 800 nm or less. At least a part of the selective reflection band of the above-mentioned first cholesteric liquid crystal pigment overlaps with the selective reflection band of the above-mentioned second cholesteric liquid crystal pigment. With respect to the total amount of the above-mentioned first cholesteric liquid crystal pigment and the above-mentioned second cholesteric liquid crystal pigment, the content of the above-mentioned first cholesteric liquid crystal pigment is more than 0% by weight and 30% by weight or less.

The invention belongs to the field of medical instrument coloring agents, and provides a natural anthocyanin endoscope coloring agent. According to the invention, the innovative design of combining a ternary color-stabilizing compound formed by anthocyanin, a co-chromophore and hydroxypropyl beta cyclodextrin with a chitosan sodium alginate polysaccharide system and a composite buffer system is adopted, and the viscosity is controlled to be 200-320 millisecond, the particle size of spray droplets is 40-60 microns, and the thickness of a thin film is 10-30 microns through specific molar ratio compatibility and a genipin crosslinking technology. Through accurate regulation and control, the excellent performance that a double-network thin layer is formed under the calcium ion environment that the absorbance retention rate at 520 nanometers is not lower than 90% and the elution rate is not lower than 90% under the irradiation of hundred thousand lux white light is achieved, the technical problems that a traditional endoscope coloring agent is poor in safety, low in stability and insufficient in mucous membrane contrast ratio are solved, and the wide clinical application value is achieved.

Provided herein are single domain antibody / polymer fluorescent tandem dye conjugates. Aspects of the conjugates provided herein include single domain antibodies having one or more polymer tandem fluorescent dyes conjugated thereto. In some cases, a polymer tandem fluorescent dye includes: (i) a polymer backbone consisting of non-conjugated repeating units; (ii) a plurality of pendant donor chromophore groups, each group independently attached to a non-conjugated repeating unit of the polymer backbone; and (iii) one or more pendant acceptor fluorophores attached to non-conjugated repeating units of the polymer backbone wherein the pendant donor and acceptor fluorophores are in an energy transfer relationship. Also provided herein are methods of using the conjugates, for example, methods for assessing the presence of a target analyte in a sample, and kits comprising conjugates useful in embodiments of the methods.

The present invention belongs to the field of responsive structural color materials, and discloses a preparation method and application of responsive structural color droplets, wherein the preparation method specifically includes the following steps: (1) preparing a first surfactant solution and a second surfactant solution; (2) preparing a liquid hydrocarbon and a liquid fluorocarbon as oil phase substances; (3) uniformly mixing the first surfactant solution, the second surfactant solution, the hydrocarbon and the fluorocarbon to form an oil-in-water system, and the formed droplets are responsive structural color droplets; changing the mass ratio of the first surfactant to the second surfactant in the system can make the structural color of the droplets appear or disappear, thereby realizing the response of the structural color to the surfactant. The structural color droplets in the present invention can regulate the morphology of the droplets through the competitive action of the two surfactants, thereby controlling the display and disappearance of the structural color, realizing responsiveness, and are very suitable for anti-counterfeiting.

The invention discloses a low-staining low-viscosity waterborne polyurethane macromolecular coloring agent and a preparation method of the low-staining low-viscosity waterborne polyurethane macromolecular coloring agent. Comprising the following components in parts by weight: 15 to 30 parts of aliphatic diisocyanate, 15 to 30 parts of micromolecular dye, 10 to 30 parts of polypropylene glycol and / or dihydroxy silicone oil, 25 to 50 parts of polyethylene glycol, 1 to 3 parts of micromolecular dihydroxy compound chain extender, 0.05 to 0.3 part of catalyst, 90 to 140 parts of acetone and 50 to 300 parts of water. By designing the hydrophilicity and proportion of the soft and hard segments of the polyurethane coloring agent, the waterborne polyurethane macromolecular coloring agent color paste which is low in staining, easy to clean, less than 1000mpas in product viscosity, more than 5% in color concentration and more than 5% in dye equivalent and good in compatibility is finally obtained, and the waterborne polyurethane macromolecular coloring agent color paste can meet the requirements of liquid product coloring agents such as clothing care and household cleaning agents. The cleaning agent can also be used for liquid cleaning agent products for body care and catering.

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.

Present application provides a renewable, modified natural oil that exhibits improved physical properties, comprising a reaction product of (A) a maleated natural oil, comprising a natural oil with maleated functionality; (B) a lactam moiety having at least one hydroxyl, thiol or amine functional group, and (C) a base; and compositions comprising the reaction product thereof. Present application also relates to a reaction product of (A) a maleated natural oil, comprising a natural oil with maleated functionality; and (B) a lactam moiety having at least one amine functional group, and compositions comprising the reaction product thereof. Present application further relates to reaction product of (A) a maleated natural oil, comprising a natural oil with maleated functionality; (B) a lactam moiety having at least one hydroxyl, thiol or amine functional group; (C) a functionalized or unfunctionalized moiety selected from the group consisting of hydrophobic moieties, hydrophilic moieties, and combinations thereof, wherein the maleated functionality has been partially reacted with the functionalized or unfunctionalized moiety; and, (D) optionally, a base; and compositions comprising the reaction product thereof.

The invention relates to the technical field of polymer dye synthesis, in particular to a polymer coloring agent based on a binary acid chromophoric monomer, a color master batch, a fiber and a preparation method of the polymer coloring agent. The structural formula of the diacid chromophoric monomer is as follows: # imgabs0. The chromophoric monomer has extremely high thermal stability, and can maintain the chemical structural integrity and chromophoric performance in a high-temperature environment (250 DEG C). The heat-resistant characteristic is mainly derived from a highly stable aromatic skeleton formed by a parent nucleus through an expanded conjugated system and a rigid plane structure, and heat vibration energy is effectively dispersed; in addition, a thermal stable group (an all-carbon skeleton) is introduced through side chain modification to form a steric hindrance effect, and molecular movement at high temperature is inhibited. Due to the unique heat resistance of the monomer, the monomer can be completely matched with a high-temperature processing window (240-300 DEG C) of a polyester melt polymerization process, and a polymer-dye composite system with a stable structure is constructed through covalent bonding in ester exchange and polycondensation processes.

The invention belongs to the technical field of papermaking dyes, and particularly relates to an environment-friendly dye for papermaking and a preparation method thereof. According to the invention, the sulfonate surfactant is prepared by a two-step method, and the sulfonate surfactant has excellent dispersibility, stability and emulsibility, and has good compatibility with alkaline auramine O; the sulfonate surfactant is compounded with the alkaline bright yellow O for use, so that the solubility, dispersion stability and high-temperature stability of the alkaline bright yellow O dye can be remarkably improved in manners of reducing interfacial tension, increasing wettability, improving permeation and the like. When the prepared environment-friendly dye is used for dyeing paper, the dye-uptake and the color fastness to light of the dye can be obviously improved, the dyeing uniformity and effect are improved, the dye waste is effectively reduced, and the requirement of green development is met.

The invention discloses a preparation method of a light sodium lignin sulfonate dispersing agent, which comprises the following steps: (a) precipitating and filtering papermaking black liquor to remove impurities, performing membrane concentration treatment on filtrate, intercepting crude lignin with the relative molecular weight of 10 * 10 < 3 >-30 * 10 < 3 >, and performing acid precipitation and filter pressing treatment to obtain high-purity lignin; (b) mixing the lignin prepared in the step (a) with a sulfonating agent and water to carry out sulfonation reaction, then adding formaldehyde to carry out condensation reaction, and then adding sodium peroxide to carry out oxidation reaction; and (c) after the reaction is finished, carrying out spray drying on the reaction liquid, and uniformly mixing the obtained sodium lignin sulfonate powder with a low-foam wetting agent DP-225 and an acrylic acid-maleic acid copolymer sodium salt according to a mass ratio of 1: (0-0.25): (0-0.2) to obtain the light sodium lignin sulfonate dispersing agent. The dispersing agent prepared by the preparation method disclosed by the invention has the advantages of reduction of fiber contamination, better dispersity and heat-resistant stability, and suitableness for being used as a dye dispersing agent and the like.

The invention belongs to the technical field of materials, and particularly relates to a dye bath composition for a photonic crystal pigment and a coloring method of the dye bath composition. The dye bath composition for the photonic crystal pigment comprises water, an organic solvent, a surfactant and a solvent dye. The dye bath composition can permeate into a gap layer of the photonic crystal pigment, so that secondary coloring of the photonic crystal pigment is realized, and the photonic crystal pigment is endowed with stronger covering power and richer multi-angle colors. The invention also provides a secondary coloring method for the photonic crystal pigment by using the dye bath composition for the photonic crystal pigment, and the coloring method has the advantages of high coloring efficiency, uniform coloring and simple operation, and can realize rapid and large-batch coloring treatment in industry.

To provide a printing ink containing an isoindoline pigment, in which discoloration of the printing ink is suppressed over time and storage stability is excellent.SOLUTION: The problem is solved by a printing ink containing an isoindoline pigment and at least one amine (A) selected from the group consisting of primary amines and secondary amines, where the amine (A) has a molecular weight of 1000 or less. The amine (A), however, does not include alkanolamines, amides, and melamine.SELECTED DRAWING: None

To provide a colored resin molding containing a coloring agent in a transparent resin which exhibits a dichromic effect of changing the color of a black substrate and the color of a white substrate without requiring a brilliant agent, a fluorescent dye and a pigment.SOLUTION: A colored resin molding has a transparent resin, a red coloring agent which is contained in the transparent resin and has high scattering property, and a blue coloring agent which is contained in the transparent resin and has low scattering property. A hue angle on the black substrate in a 10° visual field using a D65 light source is 0° to 70°, and the hue angle on the white substrate is 200° to 270° .SELECTED DRAWING: Figure 1

An “inverse” precipitation route to precipitate aqueous soluble species with copolymers as nanoparticles having a hydrophilic, polar core and a less polar shell is described.

The invention discloses a preparation method of a high-performance organic pigment for water-based printing ink, which comprises the following steps: dispersing an organic pigment in deionized water, and adding an emulsifier to prepare an organic pigment dispersion liquid; adding a hydrophilic monomer and a cross-linking monomer into the organic pigment dispersion liquid, stirring, uniformly emulsifying, adding an initiator, and stirring to react; after the reaction is finished, cooling, centrifuging and washing to obtain a first layer of coated organic pigment; the preparation method comprises the following steps: mixing a hydrophobic monomer and a functional monomer, and adding an emulsifier and deionized water to prepare microemulsion; dispersing the first-layer coated organic pigment in deionized water, dropwise adding the microemulsion and an initiator, and stirring for reaction; and after the reaction is finished, cooling, centrifuging, washing and drying to obtain the high-performance organic pigment for the water-based printing ink. According to the method disclosed by the invention, the performance of the organic pigment is optimized through a double-layer coating structure, so that the organic pigment has the advantages of dispersity, light resistance, high tinting strength, water and oil resistance and acid and alkali resistance.

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.