47 results about "Quinacridone" patented technology

An inkjet ink contains a quinacridone pigment, a pigment dispersion resin, and an aqueous medium. The pigment dispersion resin includes an adsorption resin adsorbed to the quinacridone pigment and a non-adsorption resin not adsorbed to the quinacridone pigment. The non-adsorption resin has a percentage content in the pigment dispersion resin of at least 20% by mass and no greater than 50% by mass. A supernatant obtained by centrifugation of the inkjet ink at 1,050,000 G for 3 hours has a phosphorous concentration of at least 1.0 ppm and no greater than 6.0 ppm. The supernatant has a sulfur concentration of at least 1.0 ppm and no greater than 6.0 ppm.

An inkjet ink contains a quinacridone pigment, a resin, and an aqueous medium. A 50-fold dilution of a supernatant obtained by centrifugating the inkjet ink at 1,050,000 G for 3 hours has a phosphorous concentration of at least 1.0 ppm and no greater than 6.0 ppm. On an ultraviolet-visible absorption spectrum of the supernatant, a first peak appears at a first absorbance of at least 0.16 and no greater than 0.40. The first peak is a maximum peak in a wavelength range of the ultraviolet-visible absorption spectrum of at least 300 nm and no greater than 340 nm. On the ultraviolet-visible absorption spectrum of the supernatant, a second peak appears at a second absorbance of at least 0.15 and no greater than 0.80. The second peak is a maximum peak in a wavelength range of the ultraviolet-visible absorption spectrum of at least 400 nm and no greater than 490 nm.

This invention relates to toners. A toner comprises toner particles containing a binder resin, wherein the toner particles further comprise a compound represented by formula (1) and a pigment having a quinacridone structure; wherein, in formula (1), R represents a straight-chain or branched alkyl group having 4 to 22 carbon atoms, and n is an integer from 1 to 4.

To provide an ink that combines ejection stability, abrasion resistance, and cleanability. [Solution] The ink contains a quinacridone pigment, a pigment dispersion resin, and an aqueous medium. The supernatant obtained by centrifuging the above ink at 140,000 rpm for 3 hours at 23°C is 25 times diluted, and the ultraviolet-visible light absorption spectrum of the supernatant has a maximum absorbance of 0.16 to 0.40 at wavelengths between 300 nm and 350 nm, and an absorbance of 0.002 or less at 429 nm. In the above ink, the number of coarse particles with a particle diameter of 500 nm or more is 4.0 × 10 8 The concentration is less than or equal to 1 particles / mL. The phosphorus concentration in a 50-fold dilution of the supernatant liquid is between 1.0 ppm and 16.0 ppm.

The application discloses an application of a light-cured material in safety indication or metal flaw detection and a safety indication and metal flaw detection method, and the light-cured material is prepared by uniformly mixing raw materials including an organic fluorescent dye and a light-cured glue; the organic fluorescent dye is a mixture of one or more of quinacridone, acridine yellow, acridine yellow G, acridine yellow hydrochloride, sulfuric acid proflavine, acridine orange, acridone, ethidium bromide and 9-aminoacridine; the light-cured glue is a mixture of one or more of UV drop glue D-606, ultraviolet curing adhesive 3491, ultraviolet curing adhesive YY1181, V3218 and ultraviolet curing adhesive 3492; or, the organic fluorescent dye is a mixture of one or more of acridine yellow, sulfuric acid proflavine, acridine orange and 9-aminoacridine, and the light-cured glue is V3018. The light-cured material can emit afterglow under white light excitation after curing, and can be applied to large-area safety indication and metal flaw detection.

An ink includes: a quinacridone pigment, a pigment dispersion resin, and an aqueous medium. Maximum absorbance at a wavelength of 300 nm or more and 350 nm or less in an ultraviolet-visible light absorption spectrum of a 25-fold diluted solution of a supernatant liquid obtained by centrifuging the ink at 23° C. and 140,000 rpm for 3 hours is 0.16 or more and 0.40 or less, and absorbance at 429 nm is 0.002 or less. In the ink, the number of coarse particles having a particle diameter of 500 nm or more is 4.0×108 / mL or less. A 50-fold diluted solution of the supernatant liquid has a phosphorus concentration of 1.0 ppm or more and 16.0 ppm or less.

The invention relates to a dispersing agent for water-based color paste and a preparation method of the dispersing agent. According to the dispersing agent containing the hydrophilic and hydrophobic chain segments and capable of being specifically combined with the pigment particles, a polymerization product with narrow molecular weight distribution is obtained based on RAFT polymerization, and the problem that organic pigment is prone to agglomeration in a color paste system is avoided through wrapping of the hydrophobic chain segments of polyether in the structure on the pigment particles; a polyether solvation chain segment is introduced into the structure of the dispersing agent, so that the storage stability of the dispersing agent in a water phase is ensured; the high approximation of the acridone structure and common pigment structures such as quinacridone and isoindolinone ensures the coating effect of the dispersing agent on pigment particles, the dispersing agent has good dispersibility and compatibility in different aqueous systems, a specific dispersion effect is formed, the problems of high viscosity, difficult dispersion and the like of organic pigments in the aqueous systems are effectively solved, and the dispersing agent has good application prospects. The dispersant can be used as a dispersant or an additive of systems such as water-based color paste and water-based ink. The method can be widely used in the fields of inks and paints.

This invention discloses a class of quinalidine disperse yellow dyes with high sublimation fastness and their synthesis method, belonging to the field of disperse dye technology. This invention uses Disperse Yellow 54 as the parent core and introduces one of the following substituents at the 6-position of the quinalidine ring: ethyl, n-propyl, cyclopropyl, cyclobutyl, cyclopropylmethyl, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, cyclopropoxy, cyclobutoxy, cyclopropylmethoxy, 2-methoxyethoxy, fluorine, chlorine, bromine, cyano, or nitro. This invention uses 6-substituted-2-methyl-3-hydroxyquinoline-4-carboxylic acid and phthalic anhydride as raw materials, and synthesizes the target dye in one step via a high-temperature condensation reaction. Experimental results show that the sublimation fastness of the dye of this invention reaches grade 4-5 or 5, significantly improved compared to Disperse Yellow 54 (grade 2-3), while maintaining excellent resistance to rubbing, perspiration, and sunlight. This invention has a simple synthesis process, high yield, and high purity, possessing extremely high industrial production value and market application prospects.

The invention relates to an ultraviolet-resistant stable TPU (thermoplastic polyurethane) color master batch and a preparation method thereof, and the ultraviolet-resistant stable TPU color master batch comprises the following components in percentage by weight: 40-50% of TPU resin, 2-2.5% of a lubricant and 7-8% of a light stabilizer, 0.3%-0.5% of antioxidant, 0%-45% of coloring agent, 2%-3% of filler and 0.5%-1.5% of dispersing agent; the light stabilizer comprises an ultraviolet light absorber (UVA) and a hindered amine light stabilizer (HALS), and the weight ratio of the ultraviolet light absorber (UVA) to the hindered amine light stabilizer (HALS) is (2.5: 1)-(3: 1); the TPU resin is a weather-resistant aliphatic TPU resin; the coloring agent comprises any one or combination of titanium dioxide, quinacridone organic pigment and DPP organic pigment, and the surface of the titanium dioxide is coated with silicon dioxide or aluminum oxide. The TPU color master batch is stable in ultraviolet resistance, controllable in quality in the preparation process and excellent in comprehensive use effect.

To provide an inkjet ink which suppresses the occurrence of nozzle clogging and is excellent in storage stability.SOLUTION: In the inkjet ink, the pigment is a quinacridone pigment. The specific resins are neutralization products of specific copolymers containing an α - methylstyrene-derived unit, a styrene-derived unit, a (meth) acrylic acid-derived unit, and a (di) alkylene glycol (meth) acrylate-derived unit in specific proportions, and the specific copolymers have acid values of 50mgKOH / g or more and 300mgKOH / g or less and number-average molecular weights of 3000 or more and 18000 or less. The neutralization ratio of the specific resin is from 20% to 100%. The specific crosslinking agent contains a polyfunctional epoxy compound and has a water solubility rate of 80% or more. The crosslinking rate of the crosslinked resin is 25% or more and 90% or less. The alkali metal ion concentration in the aqueous media is 500ppm or less.SELECTED DRAWING: None

The invention belongs to the technical field of pigment red purification, and particularly provides a process for reducing trace salt of quinacridone pigment red, which comprises the following steps: 1) mixing a pigment red PR122 crude product with DMF (Dimethyl Formamide), performing pigmentation treatment, dropwise adding sodium hydroxide after the pigmentation treatment is finished to enable the pH value of the material to be 7, filtering, washing with alcohol, filtering, adding water, and pulping to obtain slurry; 2) pumping the slurry into a primary circulation tank, diluting the slurry with water until the solid content is 7-9%, performing primary nanofiltration treatment, supplementing water to maintain the solid content in the treatment process, and pumping the slurry into a secondary circulation tank when the conductivity is less than or equal to 1000 [mu] S / cm, and performing secondary nanofiltration treatment; a polyamide nanofiltration membrane is adopted in the first-stage nanofiltration treatment, and a composite aluminum oxide ceramic nanofiltration membrane is adopted in the second-stage nanofiltration treatment. The process for reducing the trace salt content of quinacridone pigment red has the advantages of good purification effect and high pigment yield.

The present invention discloses a non-covalently modified graphene anti-corrosion coating and its preparation method, belonging to the technical field of anti-corrosion coatings. The non-covalently modified graphene anti-corrosion coating of the present invention comprises a base material, a curing agent, and a graphene dispersion in a mass ratio of 100:25:10. The graphene dispersion comprises the following components in parts by mass: 67-98.9 parts n-butanol, 0.1-3 parts graphene, 0.2-6 parts quinacridone, and 0.8-24 parts modified quinacridone. The base material comprises the following components in parts by mass: 92-99 parts epoxy resin, 0-6 parts n-butanol, and 1-2 parts light stabilizer. The curing agent comprises the following components in parts by mass: 90-100 parts aminosilane, 0-6 parts n-butanol, and 0-5 parts butyl acetate. The non-covalently modified graphene anti-corrosion coating of the present invention exhibits excellent corrosion and wear resistance.

To provide an aqueous ink for inkjet recording which exhibits superior fixation recoverability and is capable of preventing the bronzing phenomenon.SOLUTION: An aqueous ink for inkjet recording contains a pigment. The pigment includes a first pigment being a quinacridone pigment, and a second pigment being a monoazo pigment without a condensed ring in the molecule. The hue angle of a diluted liquid obtained by diluting the ink with water to achieve an absorbance of 1 at the maximum absorption wavelength in the wavelength range of 380 to 780 nm is 330° or more and 345° or less.SELECTED DRAWING: None

This invention discloses an ester compound based on a quinacridone structure or its pharmaceutical salt, with the structure shown in Formula I. The ester compound based on the quinacridone structure in this invention is based on common quinacridones, and only two reaction steps are required to obtain a molecule with both fluorescence and fragrance-releasing functions. The compound prepared by this invention exhibits excellent sustained-release fragrance function and strong fluorescence properties. Furthermore, its preparation method is simple, involves few synthesis steps, uses low-cost and readily available raw materials, is easy to operate, has a short reaction time, high yield, and is easy to purify. This invention can be used in the fields of organic fluorescent materials and fragrances.

The invention relates to a preparation method and application of a storage-stable low-viscosity quinacridone pigment for water-based ink. The closed-loop material is subjected to small-amount sulfonation to form a small amount of sulfonated derivatives, so that the particle size of the pigment can be effectively reduced, and the viscosity of the pigment in water-based ink is reduced. During precipitation, ammonium salt, ferrous salt and the like are added into a precipitation material, so that more crystal nucleuses can be formed during precipitation of the pigment, fine crude pigment particles are obtained, the particle size of the pigment is further reduced, the pigment is easy to homogenize, and the viscosity of the pigment in ink is reduced. In the pigment curing process, proper solvents and treatment conditions are selected, so that pigment crystal particles grow more uniformly. During pigment surface treatment, pigment derivatives (sulfonates and the like) are added, the viscosity of the pigment in the water-based ink can be effectively reduced, meanwhile, sulfonic acid groups can provide large steric hindrance, the pigment in the ink is prevented from being gathered, the pigment is more stable and does not flocculate in an application system, and the storage stability of the pigment in the water-based ink is improved.

An inkjet ink contains a quinacridone pigment, a resin, and an aqueous medium. A ratio of a mass of the resin to a mass of the quinacridone pigment is no greater than 0.50. The resin has an acid value of at least 60 mgKOH / g and no greater than 120 mgKOH / g. A supernatant has a phosphorus concentration of no greater than 2.0 ppm. The supernatant is obtained by centrifugation of the inkjet ink at 1,050,000 G for 3 hours.

The present invention provides a pigment composition which can keep black coloration even at a low concentration itself and has excellent infrared transparency. A pigment composition of the present invention includes at least a thioquinacridone-based pigment compound (A) and a pigment compound (B). The thioquinacridone-based pigment compound (A) is one or two or more thioquinacridones which may have a substituent. The substituent is one or two or more selected from the group consisting of an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, and a halogen atom. The pigment compound (B) has 0 < a*< 80 and -80 < b*< 0 in the L*a*b*color space of a pigment (BP) thereof.

An object of the present invention is to provide a pigment composition that is suitable as an IJ ink and has high dispersion stability and excellent storage stability, a coloring agent containing the pigment composition, and, in particular, an IJ ink. The pigment composition of the present invention contains a quinacridone pigment and a compound represented by formula (I) below. In formula (I), n represents an integer of 1 to 8. At least C.I. Pigment Red 122 is preferably contained as the quinacridone pigment.

To provide a resin molded product which exhibits excellent jet black when turned off and can convert white light into a chromatic color in a target wavelength band with high excitation purity when a white light source is turned on. [Solution] The resin molded article contains a thermoplastic resin and two or more pigments. The two or more pigments include one or more first pigments selected from the group consisting of carbon black and composite oxide pigments, and one or more second pigments selected from the group consisting of quinacridone red pigments, perylene red pigments, dioxazine red pigments, azo yellow pigments, isoindolinone yellow pigments, cyanine green pigments, and cyanine blue pigments. The total content of the first pigment and the second pigment per 100 parts by mass of the thermoplastic resin is 0.12 parts by mass or more and 0.7 parts by mass or less, and the lightness L of the resin molded article is measured under a 2-degree field of view using a D65 light source for reflected light. * The value is 30 or less, and the total light transmittance is 4% or less.

Provided are a quinacridone compound derived from biomass, which is obtainable safely and through a clean, green, and carbon neutral approach. and a composition containing the compound. A quinacridone compound including a radioactive carbon atom 14C and having the structure represented by the following formula (B).(In the formula (B), X each independently represents —Cl, —F, —Br, —I, —OH, —NO2, a C1 to C12 alkyl group, a C1 to C12 alkoxy group, a phenyl group, —COOH, —COO—C1 to C12 alkyl, or —CO—NR, R each independently represents a hydrogen atom, an alkyl group, an alkenyl group, or a phenyl group, and n each independently represents 1 or 2.)

The present invention belongs to the field of organic pigments and specifically discloses a method for preparing a water-based pigment paste of quinacridone pigments. In an anhydrous solvent, a portion of the quinacridone pigment is first ionized using a hydrogen extraction agent to promote a certain dispersion of the pigment; a dispersant is then added to promote further dispersion of the pigment; the pigment that has achieved a certain dispersion effect undergoes a modification reaction with a substance containing a hydrophilic group, and the modification reaction and pigment dispersion promote each other, thereby improving the degree of the modification reaction and the dispersion effect. The organic solvent is then removed by suction filtration, and the pigment is dispersed with water to obtain a water-based self-dispersing pigment paste. The method of the present invention utilizes a hydrogen extraction agent to first ionize the pigment, thereby facilitating dispersion; pigment dispersion and modification reaction are effectively combined, and the modification reaction and pigment dispersion promote each other. The paste has high stability, a simple process, and high production capacity, which is conducive to industrial production.

The invention belongs to the technical field of pigment red preparation, and particularly provides a high crystal transformation quality-based quinacridone pigment red surface treatment process, which comprises the following steps: 1) taking a pigment crude product, and carrying out grinding and salt milling to obtain a primary treatment material; and 2) adding a solvent and a MA-HBA derivative into the primary treatment material, stirring for pigmentation, and then filtering and drying to obtain the pigment red, the MA-HBA derivative is prepared by synthesizing methyl p-hydroxybenzoate and 1, 11-undecanediol, and the prepared pigment red has the advantages of good pigmentation effect and good covering power.

The present invention provides a pigment dispersion with good storage stability, which uses a halogen-free pigment as a coloring material that can replace CI Pigment Violet 23, a representative blue pigment. [Solution] The pigment dispersion contains a first pigment, a second pigment, a first dispersant for dispersing the first pigment, a second dispersant for dispersing the second pigment, and water. The first pigment is a pigment that does not have a halogen element as a substituent and is at least one selected from the group consisting of a violet pigment having a perylene skeleton, a violet pigment having a benzimidazolone skeleton, and a quinacridone pigment. The second pigment is a pigment that does not have a halogen element as a substituent and is at least one selected from the group consisting of a phthalocyanine pigment and a cyan pigment having an anthraquinone skeleton. The first dispersant and the second dispersant are copolymers having units derived from a styrene-based monomer and units derived from a (meth)acrylic acid-based monomer.

The invention belongs to the field of carbon nano luminescent materials, and relates to a self-protection carbonized polymer dot with panchromatic time-dependent adjustable phosphorescence and a preparation method thereof. Three organic molecules of urea, 1, 8-naphthalimide and quinacridone are selected as carbon sources and are heated in a mixed solution of ethanol and water to prepare the carbonized polymer dots. By increasing the surface C = O content and aggregation degree of the carbonized polymer dots, a series of self-protection carbonized polymer dots with panchromatic time-dependent adjustable phosphorescence from green to blue, from yellow to green, from orange to green, from orange to yellow and from red to orange are obtained. The carbonized polymer point prepared by the self-protection method realizes time-dependent adjustable phosphorescence in the whole visible light range, and has huge application value in the fields of anti-counterfeiting, dynamic information encryption and the like.

To provide a method for producing a coloring composition that contains a bio-based quinacridone compound usable as a bio-red pigment.SOLUTION: A coloring composition production method for producing a coloring composition, which contains a dispersion medium and a quinacridone-based red pigment composition containing a quinacridone compound. The quinacridone compound contains a radioactive carbon atom 14C, has a pMC (percent modern carbon) of 50% or more, and is represented by the formula (B-2) in the figure. The quinacridone compound is synthesized using bio-4-aminobenzoic acid and bio-succinic acid as raw materials.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a quinacridone oxide / reduced graphene oxide organic molecular electrode. The preparation method comprises the following steps: firstly, oxidizing quinacridone molecules (QD) in concentrated HNO3 to obtain quinacridone oxide molecules (OQD); the generated OQD is a nitrogen-containing carbonyl compound with an intramolecular complete pi conjugated structure, reduced graphene oxide (rGO) is taken as a conductive substrate through a non-covalent functionalization strategy, the conductive substrate is anchored on the surface of the reduced graphene oxide by utilizing a solvothermal self-assembly method, and strong pi-pi interaction exists between the OQD and the rGO, so that the OQD is prepared. The conjugated carbonyl all-carbon organic molecular electrode material OQD / rGO is prepared, and the electrochemical performance of the conjugated carbonyl all-carbon organic molecular electrode material OQD / rGO is researched. The all-carbon organic molecule electrode material has high specific capacitance, good rate capability and excellent cycling stability. In addition, in order to research the actual energy storage performance, the asymmetric supercapacitor (PDQ / rGO / / OQD / rGO) assembled by the OQD / rGO and the quinone-rich polymer modified rGO (PDQ / rGO) has excellent energy storage performance.

This invention relates to the field of energy storage materials technology, specifically to a conductive polymer based on quinacridone, its preparation method, and its application. The conductive polymer based on quinacridone is shown in formula (I): (I) In formula (I), n represents the average degree of polymerization, and n ranges from 10 to 2000. The conductive polymer based on quinacridone in this invention has good solubility and can be dissolved in a solvent to form a solution. It can then be sprayed to achieve large-area processing, which simplifies the preparation process of electrode materials. Using nickel foam as a conductive substrate, the prepared energy storage color-changing material still has a high areal capacitance at high current densities and good charge-discharge stability at different current densities. Furthermore, the amount of stored energy can be determined by observing the change in electrode color, which has great application prospects in the field of supercapacitors.

An object of the present invention is to provide a pigment composition capable of exhibiting good dispersibility and dispersion stability of a pigment in a polyurethane ink or the like, and a colorant and a liquid ink containing the pigment composition. Specifically, the pigment composition of the present invention contains at least one organic pigment selected from the group consisting of benzimidazolone azo pigments and quinacridone pigments, and at least one polycarboxylic acid compound represented by the following Formulae (I) to (II).(The descriptions in Formula (I), Formula (II), and Formula (II) are as described herein.)

An inkjet ink contains quinacridone pigment and aqueous medium. A sulfur concentration in the 10-fold diluent of supernatant liquid obtained by centrifuging the inkjet ink at 1,050,000 G for three hours is 1.0 ppm or more and 6.0 ppm or less. In an ultraviolet and visible ray absorption spectrum of the 25-fold diluent of the supernatant liquid, light absorbance at a predetermined peak is 0.17 or less. The predetermined peak is a maximum peak in a wavelength range of 400 nm or more and 490 nm or less.

The present application relates to the field of organic chemistry, and provide a kind of quinacridone-based polymer film, preparation method, application and acidic detection method.The polymer film, preparation method, application and acidic detection method provided by the present application, because monomer is quinacridone as acidic detection response unit, combine quinacridone with polymerizable group carbazole, by screening, introduce the optimal alkyl chain length, avoid the influence of the conjugation effect between quinacridone and carbazole on acidic detection, so, the film can be polymerized at room temperature, preparation process is simple, can save energy, has good stability and acidic detection property, can be recycled, has sensitivity and economy in acidic detection.