10 results about "Quinacridone" patented technology

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.

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.

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.

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.)

A composition comprising a pigment and a resin, the pigment comprising one or two or more selected from the group consisting of a nickel azo complex pigment, a quinacridone pigment, and a phthalocyanine pigment represented by general formula (Pc) or a dimer of the phthalocyanine pigment.

The present invention relates to the use of anthranilic acid in a process for preparing a compound selected from copper phthalocyanine, quinacridone, 2-[(2-methoxy-4-nitrophenyl)diazenyl]-N-(2-methoxyphenyl)-3-oxobutanamide (PY74), and 2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazole-5-yl)carbamoyl]propyl}diazenyl)benzoic acid (PY151). In particular, the anthranilic acid is produced or obtained from a microorganism.

To provide a quinacridone pigment which not only reduces the content of phosphorus in the whole pigment but also can suppress elusion of phosphorus from the pigment surface, especially, is useful for inkjet.SOLUTION: There is provided a quinacridone pigment having a phosphorus elution amount of 100 ppm or less and a phosphorus content of 400 ppm or less by the following measurement method. Measurement method: a quinacridone pigment before and after dispersion under the following dispersion condition is measured by a fluorescent X-ray analyzer, and a difference between before and after the dispersion is defined as the phosphorus elution amount. Dispersion condition: 0.1 pts.wt. of IPA and 15.9 pts.wt. of water are added to 1 pts.wt. of a quinacridone pigment and are mixed at 20°C, and are dispersed by a paint conditioner at a frequency of 750 rpm for 1 hour.SELECTED DRAWING: None

The problem to be solved by the present invention is to provide an innovative quinacridone pigment that maintains high chroma while exhibiting superior viscosity stability compared to conventional pigments in water-based ink applications. The quinacridone pigment of the present invention has a water vapor to nitrogen specific surface area ratio of 0.270 or higher and less than 0.430. The pigment dispersion of the present invention contains the above-described quinacridone pigment and a solvent. Furthermore, the water-based inkjet ink of the present invention contains the above-described pigment dispersion.