680results about "Organic dyes" patented technology

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 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.

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.

To provide an optical filter having high permeability of visible light and high shieldability of near infrared light and ultraviolet light, specifically with high permeability of blue light, while suppressing a deterioration in shieldability of ultraviolet light at a high incident angle.SOLUTION: An optical filter includes: a substrate satisfying prescribed spectral characteristics; and a dielectric multilayer laminated at least on one principal side of the substrate. The substrate includes a resin film including: a pigment (U) having a maximum absorption wavelength at 360-395 nm in dichloromethane; a pigment (A) having a maximum absorption wavelength at 600-800 nm in dichloromethane; and a resin.SELECTED DRAWING: Figure 1

The problem to be solved by the present invention is to provide an aqueous pigment dispersion that can maintain superior dispersibility and long-term storage stability, and that can be used for producing printed matter superior in color development in printing on plain paper. The present invention relates to an aqueous pigment dispersion that contains a pigment including C.I. pigment red 150, a water soluble organic solvent, and a radical polymer having an aromatic ring structure or a heterocyclic structure and having an acid value of 50 to 120 mgKOH / g, acid groups in the radical polymer being partially or entirely neutralized with a basic compound, the radical polymer being contained at a mass ratio to the pigment in the range of 0.001 to 0.1.

The invention relates to the technical field of dimming films, in particular to a black dichroic dye composition, a PDLC (Polymer Dispersed Liquid Crystal) dimming film as well as a preparation method and application of the PDLC dimming film. Comprising a compound of formula D1, a compound of formula D2 and a compound of formula D3; formula D1; formula D2; formula D3; the black dichroic dye composition is a total anthraquinone black dye composition, the value a of the prepared dimming film is-5-5 and the value b of the prepared dimming film is-5-5 at 0V, and Eab is smaller than or equal to 2 at 0V and 48V, and compared with azo dichroic dye, the black dichroic dye composition has better heat insulation and sun protection performance and meets the use requirements in automobile panoramic skyscreens, skylight dimming glass and building glass.

The invention provides a reactive dye with a high fixation rate and a preparation method thereof. The reactive dye is prepared from the following raw materials in parts by mass: 25 parts of modified reactive dye, 0.3-0.7 part of a metal ion agent and 60-80 parts of water, wherein the modified reactive dye is obtained by inclusion of reactive dye molecules with beta-cyclodextrin-pyridine carboxylic acid, and beta-cyclodextrin and pyridine carboxylic acid in the beta-cyclodextrin-pyridine carboxylic acid are connected through an alkyl chain; metal ions provided by the metal ion agent can be chelated with the picolinic acid. Reactive dye molecules and beta-cyclodextrin-pyridine carboxylic acid form an inclusion structure, the hydrolysis probability of active groups is reduced, and an alkyl chain regulates steric hindrance and molecular spacing, so that pyridine nitrogen and carboxylic acid more efficiently form a more stable chelate with metal ions and further form coordinate bonds with hydroxyl groups on the fiber surface, and the fixation rate of the reactive dye is improved.

The invention relates to a coloring composition, a color photoresist, a color filter and a display device, the coloring composition comprises a dye and a dispersant, the structural formula of the dye is shown as follows: at least one of X, R1, R2, R3, R4, X1, X2, X3 and X4 in dye molecules is configured to be connected with the dispersant through a chemical bond. According to the coloring composition provided by the invention, the dye and the dispersing agent can be connected through chemical bonds, so that precipitation or migration of the dye in the color filter prepared from the coloring composition is avoided, the weather resistance of the dye in the color filter is improved, and the reliability of the display device is improved.

A method of preparing a microcapsule composition include the steps of: (a) providing a microcapsule formed of an encapsulating polymer having a primary or secondary amine group, (b) providing a deposition agent having a reactive group, and (c) forming a covalent bond between the primary or secondary amine group and the reactive group to graft the deposition agent to the encapsulating polymer. Also disclosed are consumer products containing these microcapsules.

The invention discloses a washable improving auxiliary agent for daily chemical dye and a preparation method thereof, and belongs to the technical field of daily chemical products. The washable improving auxiliary agent for the daily chemical dye comprises the following raw materials in percentage by weight: 10%-30% of an emulsifier, 5%-10% of an anti-staining agent, 4%-6% of an emulsifying auxiliary agent, 2%-5% of a humectant, 0.1%-3% of a pH regulator, 0.01%-0.02% of a preservative and the balance of deionized water. By adding the washable assistant, the dye can be well dispersed and developed in water, the chromaticity of the original color of the dye is not influenced, and the washable performance of the dye is fully improved. In addition, the adopted biodegradable raw materials are environmentally friendly. The washable lifting auxiliary agent can be applied to improving the washing effect of dye in the daily chemical field of laundry detergent, laundry gel beads, nail polish and children cosmetics. The preparation method is simple, raw materials are uniformly mixed, and the stability is excellent.

To provide a curable composition which can form a cured film having an excellent resistance to a solvent, to high temperature and high moisture, and to a heat cycle even when the composition is cured at low temperatures.SOLUTION: The curable composition includes: a near-infrared absorption dye (A); a radical polymerizable compound (B); a radical polymerization initiator (C); a thermal curable compound (D); and a hardening accelerator (E). The hardening accelerator (E) includes at least two types of imidazole compounds.SELECTED DRAWING: Figure 1

To provide a high polymer dispersant including, as an effective component, a structural unit derived from an itaconic acid as a biomass material, the dispersant enabling preparation of a pigment dispersion having excellent pigment dispersibility and an aqueous inkjet ink having excellent ejectability and allowing recording of an image with excellent image quality, adhesion to a substrate, and durability, as well as a method for producing the dispersant.SOLUTION: A polymer dispersant for dispersing a pigment, the dispersant comprising a structural unit (i) derived from itaconic acid or the like in an amount of 5-20 mass%, a structural unit (ii) derived from isobornyl acrylate in an amount of 15-45 mass%, a structural unit (iii) derived from tetrahydrofurfuryl acrylate or the like in an amount of 10-40 mass%, and a structural unit (iv) derived from styrene or the like in an amount of 15-45 mass%, the polymer being a carboxyl group-containing polymer having a number average molecular weight of 10,000-30,000, at least a part of the carboxyl groups being neutralized with an alkali and dissolving in water.SELECTED DRAWING: None

The invention relates to a method for preparing a saturated luminescent composition or a saturated and colored luminescent composition. The method comprises a saturation step 100 of a luminescent pigment with a saturation composition adapted to penetrate the microcavities of the luminescent pigment. The saturation step 100 comprises a mixing substep 110 and a holding substep 120, the saturation step yielding a saturated luminescent pigment. The method then comprises a mixing step 200 of the saturated luminescent pigment with a carrier composition to obtain a saturated luminescent composition.

The invention discloses a preparation method of a chitosan modified polymeric dye and application of the chitosan modified polymeric dye in a temporary hair dye, and belongs to the technical field of polymeric dyes. The preparation method comprises the following steps: (a) dissolving dye containing monohydroxyl or monoamino in an organic solvent to obtain a solution A; (b) dissolving isocyanate in an organic solvent to obtain a solution B; dropwise adding the solution A into the solution B at the temperature of 20-80 DEG C, and reacting at the temperature of 20-80 DEG C to obtain a modified dye molecule solution C; (c) dissolving chitosan in a mixed solvent of water and ethanol to form a chitosan solution; and dropwise adding the modified dye molecular solution C into the chitosan solution, and reacting at 10-50 DEG C to obtain the chitosan modified macromolecular dye. The modified polymer dye has the characteristics of high safety, high stability, strong binding force with hair and the like, so that a temporary hair dye prepared from the modified polymer dye has a good dyeing effect.

A wet-state indicator composition is provided, which is excellent in color change performance and in which odor is suppressed. Disclosed is a wet-state indicator composition comprising: a hydrocarbon oil (A); at least one selected from saturated fatty acids having 16 or more carbon atoms and derivatives of the saturated fatty acids (B); and a moisture-sensitive colorant composition (C), wherein component (B) is contained in an amount of 2 to 85 parts by mass based on 100 parts by mass of the total amount of components (A) to (C).

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 presently claimed invention relates to polyalkyleneimine-based polymers that are useful as dispersants and a process for the preparation thereof. The presently claimed invention is also directed to dispersants that are useful in solvent-based dispersion systems as well as in water-based dispersion systems.

The application belongs to the technical field of display materials, and relates to a modified yellow pigment and a preparation method and application thereof. The modified yellow pigment comprises a yellow pigment, an acrylic resin and a pigment yellow 74 derivative. The yellow pigment is C.I. Pigment Yellow 138. The acrylic resin has a molecular weight of 9000, an acid value of 125 and a solid content of 30%. The pigment yellow 74 derivative is provided. The modified yellow pigment is prepared by adding the acrylic resin and the pigment yellow 74 derivative in kneading, so that the brightness and contrast of the pigment after film formation are improved. The pigment yellow 74 derivative is a solid, and the addition of the salt in the kneading increases the shearing friction, which is beneficial to the kneading modification of the yellow pigment. In the post-treatment, an iron removal process is added. The iron is removed by an iron remover for the first time, and HCl and EDTA disodium salt are further added. The hydrochloric acid is used to convert the metal into metal ions, and then the EDTA disodium salt is added to form a stable water-soluble complex, so that the metal content in the pigment is reduced to the minimum.

The invention relates to the technical field of papermaking dye performance testing, and discloses a high-stability papermaking dye and a performance testing method thereof. The method comprises the following steps: collecting dye sample data and assistant influence parameters, and constructing an initial environment variable set; determining a dye dispersion state category by adopting a machine learning clustering algorithm; if the state is aggregation abnormity, migration track data are obtained, and a dynamic process change rule is obtained through analysis; obtaining fiber attachment distribution information based on the rule, analyzing the relevance between the fiber attachment distribution information and auxiliary parameters by using a support vector machine model, and determining migration path optimization points; extracting real-time monitoring indexes from the optimization points, and integrating environmental variable influences by adopting an information fusion technology to obtain a stability quantized value; and if the quantized value is lower than the threshold value, adjusting environment simulation parameters, evaluating the improvement degree, updating the dynamic process model, and generating a real-time monitoring scheme. According to the invention, quantitative tracking and regulation of dye dispersion and migration stability are realized, and the uniformity and stability of the dyeing process are obviously improved.

Embodiments of the present disclosure relate to methods and kits for sequencing by synthesis utilizing orthogonal or biorthogonal chemical reactions between unlabeled nucleotides and multi-dye labeled post incorporation labeling reagents containing water-soluble polymer scaffolds.

According to the pigment red 254 kneading inducer and the application thereof, the aromatic amide lactam compound is used as the pigment red 254 kneading inducer, so that the content of an alpha crystal form of the pigment red 254 kneading inducer can be effectively increased, the alpha crystal form is stabilized, and the pigment red 254 kneading inducer has the advantages that the pigment dispersity and resin compatibility are improved, and grain growth and reaggregation are inhibited; the pigment red 254 overcomes many defects of pigment red 254 in the prior art, and has a remarkable application prospect.

To provide a pigment dispersion that contains a specific green or yellow pigment and has excellent viscosity stability.SOLUTION: A pigment dispersion contains at least a pigment, a derivative, a dispersant and a solvent, the pigment is at least one selected from C.I. Pigment Green 36 and the like, the derivative is a basic triazine derivative represented by the chemical formula 1, and the dispersant is a resin dispersant with an acid value in a specific range.SELECTED DRAWING: None

The invention provides a yellow dye composition and a dyeing process. The yellow dye composition comprises a dye A, a dye B, a dye C and an auxiliary agent, wherein the weight ratio of the dye A to the dye B to the dye C to the auxiliary agent is (30-50): (25-40): (0-10): (30-40). Wherein the dye A is the most important component, and a large pi conjugated system is formed by an azo bond, a pyrazole ring and two benzene rings.

The application discloses a triphenylmethane polyether dye and a preparation method thereof, and the preparation method comprises the following steps: (1) adding an organic catalyst and an oxidant into a triphenylmethane polyether dye leucoaqueous solution in the interval of 40-60 DEG C, adding an acid-binding agent to maintain a proper pH, and completing oxidation; the organic catalyst is a ferrocene-rotene iron compound; (2) adjusting the pH with an acid-binding agent aqueous solution, removing the organic catalyst by hot filtration, removing water through vacuum distillation of the filtrate, and performing pressure filtration to obtain the triphenylmethane polyether dye. The improved rotene iron catalyst is used in the application, the catalytic effect is obviously improved, the reaction temperature and activation energy are reduced, the defects of excessive hydrogen peroxide oxidation are overcome, and the obtained product meets the EN71-3 standard.

The invention discloses an antibacterial toxin-removing anhydrous dyeing and finishing powder dye as well as a preparation method and application thereof. The dye adopts a porphyrin structure-containing metal organic framework with a specific aperture as a carrier, copper phthalocyanine and an IR808 photosensitizer are loaded after modification of a silane coupling agent, and copper and zinc ions are introduced through ion exchange. By optimizing a carrier structure, surface modification and a component ratio, the dye has excellent antibacterial property, high dyeing depth and a photocatalytic function. Anhydrous dyeing and finishing are realized by adopting a supercritical carbon dioxide process, and the process is environment-friendly and efficient. The technology solves the problems of serious pollution, single function and the like of the traditional dyeing process, and has important application value in the field of textile dyeing and finishing.

The present invention provides a polymeric dispersant that is to be blended in an aqueous pigment dispersion in which a pigment is finely dispersed in a stable manner and at a high level, the aqueous pigment dispersion enabling preparation of an aqueous inkjet ink capable of recording an image excellent in adhesiveness and durability on plastic media and textiles. The polymeric dispersant is a polymer that includes a constituent unit (i) derived from styrene, a constituent unit (ii) derived from methyl methacrylate and / or the like, a constituent unit (iii) derived from 2-ethylhexyl methacrylate and / or the like, a constituent unit (iv) derived from 2-hydroxyethyl methacrylate and / or the like, and a constituent unit (v) derived from methacrylic acid, and at least part of carboxy groups is neutralized with an alkali.

Compositions, articles, systems, and methods for the detection of fluorocarbons are generally described. In certain embodiments, for example, sensing materials are described that include a bound multichromophore. The bound multichromophore can be capable of energy transport and / or diffusion between individual moieties of the bound multichromophore. In certain embodiments, for example, the bound multichromophore includes individual moieties that are linked via delocalized orbitals, such that the bound multichromophore is capable of energy transport and / or diffusion through each individual moiety of the bound multichromophore. Sensing materials that include bound multichromophores can be configured to detect the presence of an analyte, such as a fluoroalkyl species (e.g., perfluoroalkyl and / or polyfluoroalkyl materials). For example, in some embodiments, the bound multichromophore includes at least one chromophore that exhibits a change in electromagnetic radiation (e.g., light) emission in response to the presence of the analyte.

The invention relates to a preparation method of a pigment dispersant and a pigment dispersion. The preparation method of the pigment dispersant comprises the following steps: (1) carrying out self-stabilization precipitation polymerization on light gasoline before etherification and maleic anhydride in an organic solvent to obtain a mixed olefin-maleic anhydride copolymer; (2) carrying out functional modification on the mixed olefin-maleic anhydride copolymer; wherein the functional modification is (i) hydrolysis modification or (ii) sulfonation modification, (i) hydrolysis modification: hydrolyzing a maleic anhydride group in the mixed olefin-maleic anhydride copolymer, and (ii) sulfonation modification: reacting the mixed olefin-maleic anhydride copolymer with a sulfonic acid compound having a hydroxyl group or an amino group. According to the preparation method of the pigment dispersant, the low-value petrochemical crude product (light gasoline before etherification) is used as the raw material, so that the utilization efficiency of the petrochemical crude product is improved, and the green and environment-friendly concept is met.

A UV / HEVL filterable SiHy contact lens is described herein that not only has a relatively high UV / HEVL filterability but also has an aesthetically attractive color. Bulk siloxane hydrogels for UV / HEVL filterable SiHy contact lenses comprise repeating units of (1) at least one hydrophilic ethylene monomer, (2) at least one siloxane-containing ethylene monomer and / or at least one polysiloxane ethylene crosslinking agent, (3) at least one UV-absorbing ethylene monomer, (4) at least one crosslinking agent, and (5) at least one crosslinking agent. And (4) at least one polymerizable HEVL-absorbing compound capable of absorbing HEVL between 380 nm and 450 nm, and further comprising at least one blue colorant and at least one optical brightener distributed in the bulk siloxane hydrogel.