Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as coloured materials for any known purposes.

Abstract: The invention relates to novel monoazo compounds of formula (1), wherein R represents H or Cl, M2+ represents Ca2+ or Sr2+ and Y1=H and Y2=SO3− or Y1=SO3− and Y2=H. The compounds of formula (1) are characterized by their high dying power and high light-fastness.

Abstract: Dispersible pigment granules are produced by mixing an aqueous suspension of an organic pigment with an aqueous emulsion of a wax-like additive. The aqueous emulsion is then allowed to coagulate and the resulting aqueous dispersion is spray dried.

Abstract: The present invention relates to surface-treated pigments of formula (I), wherein Ar1 and Ar2 are each independently of the other a phenyl or naphthalene group, n1 and n2 denote a value from 0 to 0.15, the sum of n1 and n2 being a value from 0.01 to 0.

Abstract: A mixture of an organic nanosize pigment comprising of from 50 to 99% by weight of the nanosize pigment and 1 to 50% by weight based of a low molecular weight naphthalene sulfonic acid formaldehyde polymer and its use as a particle growth and crystal phase director for the preparation of a direct pigmentary organic pigment or in pigment finishing.

Abstract: Disclosed are green shade yellow pigments represented by the Formula I: wherein R1 and R2 are independently selected from hydrogen, hydroxy, halogen, an alkyl group having 1 to about 4 carbon atoms, an alkoxy group having 1 to about 4 carbon atoms, a halo-alkyl group containing 1 to about 4 carbon atoms, an alkoxy carbonyl group having 1 to about 5 carbon atoms; R3 and R4 are independently selected from hydrogen, hydroxy, halogen, an alkyl group containing from 1 to about 4 carbon atoms, an alkoxy group containing from 1 to about 4 carbon atoms, and halo-alkyl groups containing from 1 to about 4 carbon atoms; and M is at least one divalent metal. Also disclosed are methods of making the green shade yellow pigments, methods of using the green shade yellow pigments, and coating compositions, ink compositions, electrostatic toner compositions, paint compositions, paper compositions, and plastic compositions containing the green shade yellow pigments.

Abstract: Disclosed is a process for producing a sintered color pencil lead characterized by pigmenting a white or light-colored porous sintered pencil lead with an organic pigment by treating said porous sintered pencil lead with a solution of at least one compound of the following Formula (I) to be filled with said compound and then by forming said organic pigment within the pores by means of heating, A(B)x in which x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo series, phthalocyanine or diketopyrrolopyrrole which is attached to x groups B via one or more heteroatoms selected from the group consisting of N, O and S and forming part of the radical A, B is hydrogen or a group of the formula where at least one group B is not hydrogen and, if x is 2 to 8, all the groups B can be identical or different, and L is any suitable solubilizing group.

Abstract: The present invention provides sulfated and carboxymethylated surfactants and dispersants produced by reacting a styrenated phenol alkoxylate with sulfamic acid and then neutralizing with a base such as ammonium hydroxide. The instant invention also provides pigment dispersion comprising: (a) a pigment; and (b) a dispersant based on sulfated and carboxymethylated styrenated phenol alkoxylates. Carbon black dispersions are also provided containing carbon black and the dispersants of the invention.

Abstract: A finely divided pigment is formed of an aggregate of primary particles. A number of primary particles of not greater than 0.1 &mgr;m in particle size is at least 95% of an entire number of the primary particles, and a number of primary particles of greater than 0.1 &mgr;m in particle size is at most 5% of the entire number of the primary particles. The finely divided pigment can be produced by grinding a parent pigment (pre-division pigment) together with a water-soluble inorganic salt and a water-soluble organic solvent in a grinding machine at a temperature of from 30 to 90° C. for 2 to 6 hours under a load, and then removing the water-soluble inorganic salt and the water-soluble organic solvent. A coloring composition comprises a dispersing medium and the finely divided pigment dispersed in the dispersing medium.

Abstract: A method for oxidizing an organic pigment including dispersing the pigment in an aqueous medium and exposing the dispersed pigment to ultrasonic radiation, whereby the exposed pigment exhibits from 3 to 10 microequivalents of carboxylic acid, or salts thereof, per square meter of pigment surface.

Abstract: The invention relates to the novel pigment dispersants of the formula (I), wherein Q1 is a group of an organic pigment selected from the group of the perinone, quinacridone, quinacridonequinone, anthanthrone, indanthrone, dioxazine, diketopyrrolopyrrole, indigo, thioindigo, thiazine indigo, isoindoline, isoindolinone, pyranthrone, isoviolanthrone, flavanthrone or anthrapyrimidine pigments; s is a number of from 1 to 5; n is a number of from 0 to 4; the sum of s and n being 1 to 5, and to pigment preparations. Said pigment preparations are characterized by a content of at least one organic pigment and one pigment dispersant of the formula ((I), wherein Q1 is a group of an organic pigment selected from the group of phthalocyanine, azo, benzimidazolone, disazocondensation, perinone, quinacridone, quinacridonequinone, anthanthrone, indanthrone, dioxazine, diketopyrrolopyrrole, indigo, thioindigo, thiazine indigo, isoindoline, isoindolinone, pyranthrone, isoviolanthrone, flavanthrone or anthrapyrimidine pigments.

Abstract: A method of producing self dispersible organic pigment particles stabilized by the method. The method includes modifying organic pigment particles and then contacting the surface modified particles with an aqueous vapor entrained in a carrier gas to produce the stabilized organic pigment particles. Typically the pigment particles are modified by exposing their surfaces to ozone or a plasma-activated process gas. The surface stabilizing method prevents the violent exothermic reaction, which occurs when surface modified pigment particles are exposed to ambient air. The method is accomplished in a device, which includes a reactor, means for introducing in the reactor aqueous vapor entrained in a carrier gas and an agitator assembly for deagglomerating during surface modification the pigment particles placed in the reactor.

Abstract: Organic pigments are conditioned by treating them, after synthesis but preferably without or with only partial drying, in a mixture of from 1 to 30% by weight of a neutral, polar liquid having a dipole moment &mgr; of 2.8-6.0? 10−18 esu (2.8 to 6.0 debye units) and from 70 to 99% by weight of water in an agitated media pearl mill having a specific power density of at most 2.0 kjs7−1 per litre of grinding space. Drying is especially suitable in the case of only slightly agglomerating, easy to wet pigments of specific surface area from 1 to 25 m2/g. The method gives excellent results, and is flexible and also much simpler than known methods.

Abstract: Water-insoluble violet benzimidazolone monoazo pigments of the formula: wherein R1, R2 and R3 each represent hydrogen, chlorine, bromine, methyl, methoxy, ethoxy, nitro or a group of the formula —COOR with R being hydrogen, methyl or ethyl, and R4 represents hydrogen, chlorine, bromine, methyl, methoxy, ethoxy or nitro group. Due to the presence of two 5-membered heterocyclic rings in the molecule, these pigments display very high thermoresistance and excellent fastness to migration.

Abstract: The present invention is directed to a yellow ink which can realize images possessing excellent color reproduction and waterfastness. Images possessing very excellent color reproduction and lightfastness can be realized by using a yellow ink composition comprising C.I. Pigment Yellow 128 and C.I. Pigment Yellow 110 as a colorant, or by using a yellow ink set comprising a first yellow ink composition containing C.I. Pigment Yellow 128 and a second yellow ink composition containing C.I. Pigment Yellow 110.

Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.

Abstract: A pigment yellow 74 obtained by coupling a coupler component containing 2-methoxyacetoacetoanilide and an acetoacetoanilide derivative of the following formula (1) in an amount of 0.1 to 10 mol %, based on the 2-methoxyacetoacetoanilide, and a diazo component obtained by diazotizing 2-methoxy-4-nitroaniline, wherein X may be the same or different and is CONR1R2, SO2NR1R2, NHCOR1, CONH(CH2)kNR1R2 or SO2NH(CH2)kNR1R2 (in which each of R1 and R2 is independently a hydrogen atom or an alkyl group, or R1 and R2 together form a cyclic structure, and k is an integer of 1 to 4), m is 1 or 2, Y maybe the same or different and is R3, OR3 (in which R3 is a hydrogen atom or an alkyl group), COOH or SO3H, and n is an integer of 0 to 2, and a printing ink composition comprising the above pigment yellow 74.

Abstract: A monoazo lake pigment composition containing a monoazo lake pigment obtained from a laked pigment aqueous slurry prepared by conducting coupling of a diazo component obtained by diazotizing an aromatic amine having a soluble group and a coupler component and conducting laking after or simultaneously with the coupling, wherein the laking is carried out in the presence of a water-soluble acrylic polymer in an amount of 0.1 to 40 parts by weight per 100 parts of the above coupler component, and a gravure ink containing the above pigment composition and a gravure ink vehicle.

Abstract: Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —SH group. Modified pigments are also described.

Abstract: A photosensitive coloring composition comprising C.I. pigment yellow 150 which yields an extract in an amount of 1% by weight or less when subjected to extraction with tetrahydrofuran, other pigments, a solvent, a (meth)acrylic resin, a polyfunctional monomer, and a photopolymerization initiator. The photosensitive coloring composition is excellent in fluidity, anti-agglomeration property, anti-crystallization property, coloring power and the like, and, with the photosensitive coloring composition, images having superior sharpness when developed with an aqueous alkaline solution can be formed, and color filters having high uniformity, low surface coarseness and high coloring power, as well as liquid crystal display panels can be obtained steadily.

Abstract: The present invention relates to a process for preparing a polymer-modified pigment comprising the step of: combining, in any order, at least one pigment having attached at least one nucleophilic group, at least one polymer comprising at least one carboxylic acid group or salt thereof, and at least one coupling agent. At least one mediator compound may also be used. The modified pigments can be used in applications such as inkjet ink applications.

Abstract: The present invention describes a dispersion comprising a vehicle and a modified pigment. The modified pigment has, when measured in an aqueous medium, a zeta potential of 0.0 mV at a pH of between 5.0 and 11.0. Inkjet ink compositions and an inkjet consumable set are also disclosed.

Abstract: A fluidizing agent which is a diamine and/or diquaternary ammonium salt of a coloured acid of the phthalocyanine or disazo series of dyestuffs wherein the diamine or diquaternary ammonium cation is of formula (1) wherein R is optionally substituted C6-30-alkyl or optionally substituted C6-30-alkenyl; R1 is hydrogen, optionally substituted C1-30-alkyl or C2-30-alkenyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R2, R3 and R5 are each, individually, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R4 is hydrogen, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; X is C1-12-alkylene or C2-14-alkenylene; or R1 and R3 together with the two nitrogen atoms to which they are attached and X form a ring; and/or R4 and R5 together with the nitrogen atom to which they are attached form a ring.

Abstract: Disclosed is a process for the preparation of a pigment dispersion starting with a tank flushed pigment that is continuously fed into a twin screw extruder, washed and dried by vacuum to get a desirable product.

Abstract: Near-infrared transmitting black azo pigments are represented by the following formula (1) and have a crystalline form selected from the group consisting of a thin, long crystalline form and a leaf-shaped crystalline form: wherein R represents at least one group selected from the group consisting of lower alkyl groups having 1 to 3 carbon atoms and lower alkoxy groups having 1 to 3 carbon atoms, n stands for an integer of from 1 to 5, and, when n is other than 1, Rs may be the same or different. These near-infrared transmitting black azo pigments can be produced by treating the corresponding black azo pigments of the formula (1) with an alkali in an alcohol. Near-infrared transmitting black azo pigments compositions each comprises one or more of the near-infrared transmitting black azo pigments and a near-infrared transmitting material as a vehicle.

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.

Abstract: The present invention relates to a composition comprising at least one azo pigment of the formula optionally additional azo pigments and a surfactant, and from 0.1 to 50% by weight of a selected resin. The invention further relates to a process for its preparation, its use for the preparation of dispersions, paint systems, coating materials, color filters, inks, preferably printing inks, as well as color toners comprising the inventive pigment compositions, particularly preferable as liquid inks in the packaging industry, and liquid inks for the packaging industry.

Abstract: A composition comprising a compound of Formula (1) and compound of Formula (2) or salts thereof: The compositions show good light-fastness and are particularly useful for photorealistic ink jet printing.

Abstract: A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g.

Abstract: The invention relates to a solid pigment composition comprising a) at least one pigment, b) at least one compound selected from the group consisting of b0) a phenol-styrene-polyglycol ether or an ionically modified phenol-styrene-polyglycol ether, b1) a condensation product prepared from b1A) sulphonated aromatics b1B) aldehydes and/or ketones and b1C) optionally one or more compounds selected from the group of unsulphonated aromatics, urea and urea derivatives, and b2) phosphoric acid, phosphonic acid and derivatives thereof, and c) at least one organic thickener.

Abstract: Organic and inorganic composite pigments having an average particle diameter of 0.01 to 10.0 &mgr;m composed of a white inorganic particle, an organosilane compound obtained from alkoxysilanes, or polysiloxanes coating on the white inorganic particle, and an organic pigment coat formed on said coating. An ultraviolet light-absorbing agent is present in any portion from the surface of the white inorganic particle to surface of the organic pigment coat. These composite pigments have reduced amounts of organic pigments desorbed from their surface and exhibit excellent light resistance due to their ultraviolet absorbing property.

Abstract: The invention relates to a process for preparing pigments, which comprises

Abstract: Disclosed herein is a green pigment composition comprising (a) a green pigment comprising a mixture of fine particles of a halogen-free blue pigment and fine particles of a halogen-free yellow pigment and (b) a halogen-free pigment derivative. Since the green pigment composition of the present invention does not generate the harmful substances such as dioxin and PCB at the time of burning processing, it is environmentally friendly, sanitary, easily recycled, excellent in light resistance and heat resistance and has the hue of clearness.

Abstract: A pigment dispersion suitable for use in the manufacture of pigmented coating compositions is provided. The pigment dispersion comprises a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A method of making a present dispersion is also provided. The method comprises mixing together, in any combination: a) pigment, b) carrier, and c) an acrylic/polyether comb-branched copolymer dispersant wherein the polyether portion of the copolymer is free of any acidic groups. A pigmented coating composition is also provided comprising a pigment dispersion made in accordance with present invention.

Abstract: The invention provides a process for the fine division of pigments which comprises spraying a coarsely crystalline crude pigment and/or a poorly dispersible prepigment in suspension form through nozzles to a point of conjoint collision in a reactor chamber enclosed by a housing in a microjet reactor, a gas or an evaporating liquid being passed into the reactor chamber through an opening in the housing for the purpose of maintaining a gas atmosphere in the reactor chamber, and the resulting pigment suspension and the gas or the evaporated liquid being removed from the reactor through a further opening in the housing by means of overpressure on the gas entry side or underpressure on the product and gas exit side.

Abstract: A pigment having weak dispersion force to be readily dispersed in a medium to be colored from which an excellent yellow image having superior transparency can be produced. The pigment includes a compound having the same chemical formula as C.I. Pigment Yellow 180. The BET specific surface area based on the nitrogen absorption process of the pigment is 20-100 m2/g, and the ratio of the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=17.5°±0.2° to the absolute strength of X-ray diffraction at Bragg angle 2&thgr;=18.2°±0.2° of the pigment in a powder X-ray diffraction diagram using a CuK&agr; characteristic X-ray is less than 1.8/1.0. The present invention also provides a dispersion including the pigment and a thermoplastic resin having excellent transparency and color strength.

Abstract: Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.

Abstract: There is provided a method for regulating the average particle diameter of a pigment for an ink composition possessing excellent anti-clogging properties and ejection stability. The method comprises the steps of: dispersing the pigment in a solvent to prepare a stock pigment dispersion; and subjecting the stock pigment dispersion to crossflow membrane filtration.

Abstract: A finely divided pigment is formed of an aggregate of primary particles. A number of primary particles of not greater than 0.1 &mgr;m in particle size is at least 95% of an entire number of the primary particles, and a number of primary particles of greater than 0.1 &mgr;m in particle size is at most 5% of the entire number of the primary particles. The finely divided pigment can be produced by grinding a parent pigment (pre-division pigment) together with a water-soluble inorganic salt and a water-soluble organic solvent in a grinding machine at a temperature of from 30 to 90° C. for 2 to 6 hours under a load, and then removing the water-soluble inorganic salt and the water-soluble organic solvent. A coloring composition comprises a dispersing medium and the finely divided pigment dispersed in the dispersing medium.

Abstract: The present invention relates to pigmentary solid solutions comprising copper phthalocyanine (Pigment Blue 15; C.I. 74160) as host and other blue to violet pigments as guests. Preferred hosts are the &agr; (Pigment Blue 15:1), &bgr; (Pigment Blue 15:3) and &egr; (Pigment Blue 15:6) crystal forms of copper phthalocyanine, especially the &egr; crystal form. The present invention also relates to dispersions comprising solid solutions as pigment particles, and pigment derivatives as rheology improvers. Preferred dispersions of solid solutions in the e crystal lattice may be used in particular to prepare color filters for liquid-crystal displays (LCDs). The present invention also includes a process for preparing the dispersions of the invention, the solid solutions themselves, and the use thereof to pigment high molecular mass organic materials.

Abstract: Disclosed are pigment particles prepared by a process which comprises (a) preparing a solution of a polyalkylene oxide compound in water; (b) preparing a solution of a cationic dye in water; (c) admixing the solution containing the polyalkylene oxide compound with the solution containing the cationic dye to form a mixture; (d) adding to the mixture a solution containing a heteropolyacid in water, an alcohol, or a mixture thereof, thereby resulting in formation of pigment particles having an average particle diameter of no more than about 300 nanometers; and (e) after addition of the heteropolyacid to the mixture, neutralizing the mixture by addition of a base. Another embodiment of the present invention is directed to an ink composition comprising water and the aforementioned pigment particles.

Abstract: A method of conditioning an organic crude pigment by treating, under high shear, 1 part by weight of the crude pigment and about 0.5 to 1.9 parts by weight of polyphosphoric acid or polyphosphoric acid methyl ester at a temperature ranging from about 90 to 160° C.

Abstract: The invention provides a process for the fine division of pigments which comprises dissolving coarsely crystalline crude pigments in a solvent and precipitating them with a liquid precipitation medium by spraying the pigment solution and the precipitation medium through nozzles to a point of conjoint collision in a reactor chamber enclosed by a housing in a microjet reactor, a gas or an evaporating liquid being passed into the reactor chamber through an opening in the housing for the purpose of maintaining a gas atmosphere in the reactor chamber, and the resulting pigment suspension and the gas or the evaporated liquid being removed from the reactor through a further opening in the housing by means of overpressure on the gas entry side or underpressure on the product and gas exit side.

Abstract: A method for preparing a green pigment composition in which a mixture of a halogen-free organic blue pigment material and a halogen-free organic yellow pigment material are subjected to an atomizing process. The atomizing process is desirably (1) a co-kneading process conducted in the presence of a grinding material, or (2) a process that comprises dissolving the above-mentioned blue pigment material and yellow pigment material in a strong acid to obtain a solution, and injecting this solution into water to obtain a re-deposited substance. The method prevents the “fogging” problem, and provides high quality green shade having simultaneously sufficient light resistance and heat resistance. The resulting organic pigment composition is excellent also in plastics coloring use requiring a heating process at higher temperature, and has high safety/sanitation property, and causes no environmental problem.

Abstract: A process for the preparation of an organic pigment dispersion is disclosed and consists of dispersing a dried soft-textured organic pigment in a dispersion vehicle, wherein the dispersion vehicle contains an ink varnish and alkyd and the dispersion is carried out in a tank equipped with a sweep and a high speed dispersion blade.

Abstract: The present application relates to a process for the manufacture of pigmented vitreous materials, as well as to pigmented vitreous materials, characterized by the use of soluble pigment precursors and preferably the absence of significant amounts of dispersants. These pigmented vitreous materials can be used as colored materials for any known purposes. Soluble pigment precursors comprising a partial structure are also claimed, wherein X1 is an aromatic or heteroaromatic ring, B is hydrogen or a group of the formula but at least one group B is not hydrogen, and L is a solubilizing group.

Abstract: Disclosed is a pigment dispersion that can be used for an ink jet printing-use pigment ink that affords stable printing characteristics and has excellent storage stability in an ink jet printer having a head driven at a high frequency and having finer nozzles in order to enhance image quality and raise the speed. Disclosed is also a method for manufacturing this pigment dispersion. This manufacturing method includes a step of surface-treating a self-dispersing type of pigment, in which at least hydrophilic, dispersibility-imparting group is introduced to the pigment surface directly and/or via a polyvalent group, and a step of dispersing the self-dispersing pigment obtained in said surface-treating step in an aqueous medium, wherein the dispersion step is a step in which at least the self-dispersing pigment, a wetting agent, and water are dispersed in the form of a liquid mixture.

Abstract: A near-infrared reflecting composite pigment comprises a near-infrared non-absorbing colorant and a white pigment coated with the near-infrared non-absorbing pigment. The near-infrared reflecting composite pigment can be produced by mixing a colorant dispersion, in which the near-infrared non-absorbing colorant is dispersed in a liquid medium, with the white pigment in a form selected from powder or a dispersion and then drying the resultant mixture. A near-infrared reflecting coating agent comprises as a coloring agent the near-infrared reflecting composite pigment. A near-infrared reflecting material comprises a base material coated on a surface thereof with the near-infrared reflecting coating agent.

Abstract: A mono-azo compound of Formula (1) and salts thereof: wherein A, G, L1, L2, and R1, are defined in the specification, have especially good light fastness and other advantageous properties. These dyes may be used in inks, especially inks for ink jet printing inks and in ink jet printing processes to print substrates and to in ink jet printer cartridges.

Abstract: A process for the manufacture of a pigment concentrate which comprises dispersing dry organic pigment granules in an organic vehicle.