255 results about "Quinacridone" patented technology

The invention relates to a device structure of an organic light-emitting diode (OLED), and especially relates to a highly-efficient organic electroluminescent device based on a fluorescence doped luminescent layer. The organic electroluminescent device comprises a transparent substrate, a transparent anode, a cavity transmission layer, a first exciton barrier layer, a luminescent layer, a second exciton barrier layer, an electronic transmission layer, an electronic injecting layer and a metal cathode. The luminescent layer is formed by mixing a main body and a guest body. The main body material is organic small molecules whose energy difference between a first kind single heavy excitation state and a triplet excitation state is quite small. The guest body material is dye molecules with high fluorescence efficiency, like quinacridone derivatives. The highly-efficient organic electroluminescent device based on a fluorescence doped luminescent layer is advantageous in that the external quantum efficiency exceeds 5% of theoretic limit efficiency of a conventional fluorescence device, and the luminescence efficiency of a fluorescent OLED device can be effectively improved; the luminescent device of the invention is high in brightness, low in starting voltage, high in efficiency, and low in efficiency roll-off.

An actinic ray curable composition containing a quinacridone pigment; a dispersant; a cationically polymerizable monomer; a photo acid generator; and a quinacridone derivative.

The present invention provides a magenta recording ink composition including at least a solid solution pigment (A) containing quinacridone, a lake pigment (B) having a xanthene structure, an aqueous solvent, and water, wherein the solid solution pigment (A) has visible light absorption peaks at wavelength ranges of from 510 nm to 530 nm and from 540 nm to 560 nm, and a mass ratio (B/A) of the lake pigment (B) to the solid solution pigment (A) falls within the range of 0.1 to 5.

An image pickup device comprises an organic photoelectric conversion film sandwiched between at least two electrodes, wherein the organic photoelectric conversion file comprises a specific quinacridone derivative or a specific quinazoline derivative.

The use of mixed-crystal pigments of the quinacridone series consisting ofa) from 85 to 99% by weight of unsubstituted beta-phase quinacridone of the formula (I)in which R1 and R2 are hydrogen atoms, andb) from 1 to 15% by weight of one or more substituted quinacridones of the formula (I) in which the substituents R1 and R2 are identical or different and are chlorine, bromine or fluorine atoms orC1-C4-alkyl, C1-C4-alkoxy or carboxamido groups, which can be substituted by C1-C6-alkyl groups, and R1 can additionally be hydrogen,as colorants in electrophotographic toners and developers, powder coating materials, inkjet inks, electret fibers, and color filters.

A magenta toner for developing electrostatic images provided which contains a binder resin and a colorant, wherein the colorant includes a mixed crystal of two or more colorants and when a solid patch is fixed on art paper complying with the ISO standard by using this toner, a resulting fixed image color satisfies at least one of the following formulae (b*)<0.85 (a*)−67.92; and (b*)>−7.94(a*)+591.85. The color difference ΔE between the color of the fixed image and the color characterized by L*: 46.6, a*: 75.1 and b*: −4.4 is preferably less than 6. The colorant is preferably a mixed crystal of a quinacridone colorant and a monoazo colorant. Moreover, the invention provides a method for producing the magenta toner, a developer containing the magenta toner, and an image-forming method using the magenta toner.

A pigment dispersion comprising a colour pigment and a polymeric dispersant having at least one pending chromophore group covalently bound to the polymeric backbone of the polymeric dispersant through a linking group

• wherein the at least one pending chromophore group is a derivative from a colour pigment selected from the group consisting of monoazo pigments, disazo pigments, β-naphtol pigments, naphtol AS pigments, azo pigment lakes, benzimidazolone pigments, disazo condensation pigments, metal complex pigments, isoindolinone pigments, isoindolinine pigments, phthalocyanine pigments, quinacridone pigments, diketopyrrolo-pyrrole pigments, thioindigo pigments, anthraquinone pigments, anthrapyrimidine pigments, indanthrone pigments, flavanthrone pigments, pyranthrone pigments, anthanthrone pigments, isoviolanthrone pigments, aluminium pigment lakes, dioxazine pigments, triarylcarbonium pigments and quinophthalone pigments;
• the at least one pending chromophore group is a chromophore group occurring as a side group on the polymeric backbone and not a group in the polymeric backbone itself or occurring solely as an end group of the polymeric backbone;
• the linking group consists of all the atoms between the polymeric backbone and the first atom of the aromatic group by which the pending chromophore group is linked to the polymeric backbone;
• the polymeric dispersant has a polymeric backbone with a polymerization degree between 5 and 1000; and
• at most 30% of the monomer units of the polymeric backbone have a pending chromophore group.

The pigment dispersion can be advantageously used in inkjet inks.

Also disclosed is a method for preparing the pigment dispersion comprising the step of preparing the polymeric dispersant by copolymerizing a monomer already containing the pending chromophore group.

A water-dispersed inkjet recording liquid excellent in water resistance and transparency and also excellent in the property of ejection from a nozzle, containing, as a colorant, a water-based dispersion of an organic pigment (A) which is at least one member selected from the group consisting of a quinacridone pigment, a benzimidazolone pigment, an insoluble azo pigment, a fuzed azo pigment, a quinophthalone pigment, a naphthol pigment, a perylene pigment and an isoindolinone pigment and has an average particle diameter of 10 to 150 nm (measured by laser scattering), the water-based dispersion of the organic pigment (A) being obtained by mechanically kneading a mixture containing at least three components of the organic pigment (A), a water-soluble inorganic salt (B) in an amount by weight at least three times as large as the amount of the organic pigment (A) and a water-soluble solvent (C) to finely mill the organic pigment (A), and then removing the water-soluble inorganic salt (B) and the water-soluble solvent (C) by washing the kneaded mixture with water, and a process for the production thereof.

An organic photoelectric device may include an anode and a cathode configured to face each other, and an active layer between the anode and cathode, wherein the active layer includes a quinacridone derivative and a thiophene derivative having a cyanovinyl group.

The present invention relates to organic electroluminescent material, and is especially one kind of quinacridone derivative and its application as electroluminescent material. One series of hexasubstituted quinacridones as novel electroluminescent material for producing high performance organic electroluminescent device is provided. The organic electroluminescent device of the present inventionconsists of glass substrate, positive electrode, negative electrode, carrier implanting layer between the positive electrode and the negative electrode, carrier transmission layer and luminescence layer. The compound of the present invention plays important role in the luminescence layer. The compound of the present invention has simple preparation process, and the luminescent device has high brightness, high efficiency, efficiency less affected by the dope density, low start voltage, long life and other advantages.

The invention provides a pigment dispersing composition and a manufacturing method thereof, coloured polymerized composition, colour filter and manufacturing method thereof. The pigment dispersing composition contains pyrrolo-pyrrole-dione series pigments, 1 to 30 mass parts of phthaloyl imidoalkylated pyrrolo-pyrrole-dione in terms of 100 mass parts of pyrrolo-pyrrole-dione series pigments; 0.1 to 20 mass parts of phthaloyl imidoalkylated quinacridone in terms of 100 mass parts of pyrrolo-pyrrole-dione series pigments and at least an organic solvent.

The present invention relates to methods and compositions utilizing fluorescent quinacridone derivatives. In particular, the present invention relates to the use of fluorescent quinacridone derivatives for the labeling and detection of riucleic acids. The present invention thus provides improved compositions and methods for labeling biological molecules useful in the detection of nucleic acids and other biological molecules.

Disclosed are a toner for developing an electrostatic image, a full color toner kit and an image formation method, the toner containing at least a resin and a colorant, wherein the colorant comprises a quinacridone pigment having a number average primary particle size of from 30 to 150 nm and having a ratio of a major axis direction length to a minor axis direction length of from 1.0 to 2.0 and Pigment Red 238.

The invention discloses a waterborne nanometer universal fat-free colorant and a preparation method thereof. The colorant is prepared from a dispersing agent and a nanometer universal colorant, wherein the dispersing agent is prepared from a hydrophobic monomer, a hydrophilic monomer, a functional monomer, an initiator and an environment-friendly solvent; the nanometer universal colorant is prepared from a toner, a dispersing agent, a humectant, an defoaming agent, an anti-settling agent, a sterilizing agent and deionized water. The dispersing agent is suitable for various waterborne fat-free colorants, particularly for pigments which are difficult to disperse such as quinacridone; the prepared colorant has high stability, is of nano-grade particle size, has efficient dispersing and anti-flocculating effects, low viscosity and high storage stability, and can be widely applied to waterborne wood lacquer, waterborne metal painting, automobile electrophoretic paint, waterborne plastic colored paint, waterborne textile printing, waterborne screen printing ink and the like.

The method for preparation quinacridone pigment nanocrystals with sub micrometer to nanometer in average size comprising, supplying supercritical or semi-critical liquid, which dissolves quinacridone pigment, into a specimen tube (ST) composing a reactor possessing a filter of desired opening to the upper stream side and to the down stream side in which quinacridone pigment is set up, flowing out the supercritical or semi-critical liquid in which quinacridone pigment is dissolved from said reactor to a mixing apparatus to which coolant is supplied, and by selecting the kind of supercritical of semi-critical liquid and combination of conditions e.g. supplying speed of each liquids, temperature of the liquid and the reacting pressure.

A magenta toner, produced by a method including suspending an oily liquid comprising a binder resin and a colorant in an aqueous medium, wherein the colorant comprises a naphthol pigment and a quinacridone pigment, and the quinacridone pigment comprises a pigment having a specific formula.

A method for forming a multilayer coated film on an object includes steps (1) to (3) below. A first colored coating material is applied to the object, thereby forming a first colored coated film (step (1)). The first colored coating material includes an iron-oxide-coated aluminum pigment and a quinacridone pigment and has a light reflectance property at specific wavelengths. A second colored coating material is applied to the first colored coated film, thereby forming a second colored coated film (step (2)). The second colored coating material includes a perylene pigment and has a specific hue. A clear coating material is applied to the second colored coated film (step (3)). A color difference ΔE between the first colored coated film and the multilayer coated film is in a range of 20 to 30.

The invention relates to a quinacridone derivative and application thereof. The quinacridone derivative is obtained by subjecting quinacridone (matrix) to chemical modification (connection with electron-donating groups and electron-withdrawing groups of triphenylamine). In the quinacridone derivative which contains donor-acceptor electronic groups and is designed and prepared in the invention, electrons are easier to transfer in an excitation state, so that the quinacridone derivative achieves the performance of effectively converting optical energy into electric energy and can be used as a photosensitizer for a dye-sensitized nanocrystal solar cell. Experiments show that the quinacridone derivative provided by the invention has favorable photosensitization property.

A pattern-transferring film having a print pattern provided on an upper surface thereof is floated on a liquid surface within a transferring bath and an objective body is immersed into a liquid within the transferring bath together with the pattern transferring film under a liquid pressure so as to transfer the print pattern onto the objective body. An ink set of at least blue, yellow and red inks is used for printing the pattern on the pattern-transferring film. Each of the printing inks comprises at least a resin ingredient and a pigment including color pigments. The color pigment for the blue ink is a phthalocyanine blue, the color pigment for the yellow ink is an isoindolinone yellow and the color pigment for the red ink is a quinacridone red. The ink set may include one or both of a white ink and a black ink. The color pigment for the white ink is a titanium white and the color pigment for the black ink is a carbon black. All the five color printing inks have a weather resistance of more than 3000 hours on a weather resistance test by a JIS based sunshine weather meter and therefore a color tone of the transferred pattern obtained by using these printing inks is balanced and the pattern transferred article having such a transferred pattern has the same weather resistance, which causes the article to have its life span maintained.

An ink set includes a cyan ink composition containing C. I. Pigment Blue 15:6 as a pigment; a magenta ink composition containing a quinacridone pigment selected from the group consisting of C. I. Pigment Violet 19, C. I. Pigment Red 122, C. I. Pigment Red 202, and C. I. Pigment Red 209 or a quinacridone solid solution pigment composed of at least two selected from the group; a yellow ink composition containing a pigment selected from the group consisting of C. I. Pigment Yellow 74, C. I. Pigment Yellow 213, and C. I. Pigment Yellow 185; a light magenta ink composition containing a quinacridone pigment selected from the group consisting of C. I. Pigment Violet 19, C. I. Pigment Red 122, C. I. Pigment Red 202, and C. I. Pigment Red 209 or a quinacridone solid solution pigment composed of at least two selected from the group at a pigment concentration lower than that of the magenta ink composition; and a light cyan ink composition containing C. I. Pigment Blue 15:3 as a pigment at a pigment concentration lower than that of the cyan ink composition.

An ink set is provided, the ink set including a yellow ink composition; and at least one of a magenta ink composition and a cyan ink composition, wherein a colorant of the yellow ink composition contains an azo pigment represented by formula (1), its tautomer, or a salt or hydrate thereof, the magenta ink composition contains at least one pigment selected from quinacridone pigments, and the cyan ink composition contains at least one pigment selected from phthalocyanine pigments:

wherein Z represents atoms necessary to complete a 5- to 8-membered nitrogen-containing heterocycle; Y₁, Y₂, R₁₁ and R₁₂ each represents a hydrogen or a substituent; G₁ and G₂ each represents a hydrogen, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; and W₁ and W₂ each represents an alkoxy group, an amino group, an alkyl group or an aryl group.

An ink composition having excellent ink stability over time and image adhesion to a recording medium is provided.

The ink composition of the present invention includes: cross-linked particles containing a quinacridone solid solution pigment including at least two types of quinacridone-based compound; a water-soluble polymerizable compound; a polymerization initiator; and water.