Abstract: An improved process for producing a substantially pure gamma phase a quinacridone pigment or pigment derivative involving preparing an aqueous slurry of a crude quinacridone in the presence of caustic alkali and a non-polar, water immiscible solvent; and heating said slurry at a temperature above about 120° C.

Abstract: The present invention relates to a process for preparing surface-modified colored pigments. The process includes the steps of: preparing a reaction batch comprising a treating agent and a diazotizing agent; adding a colored pigment to the batch; and mixing the colored pigment and the batch under high shear conditions to form a reaction product comprising a surface-modified colored pigment. The treating agent has an organic group which comprises at least one diazotizable group. In a preferred embodiment the diazotizable group comprises a) at least one aromatic group or at least one C1-C20 alkyl group, and b) at least one ionic group, ionizable group, nonionic group, or a mixture thereof. The surface-modified colored pigments prepared by the process of the present invention have been found useful in aqueous or solvent based compositions and particularly in ink jet ink compositions.

Abstract: There are disclosed a pigment composition comprising a dry-milled pigment, a water-soluble resin, and a nonionic surfactant composed of a compound having an acetylenic linkage; and a method for producing a pigment composition, comprising dry-milling a pigment containing coarse particles in the presence of a water-soluble resin and a nonionic surfactant composed of a compound having an acetylenic linkage. The production method is also possible in the form of comprising (a) dry-milling a pigment containing coarse particles in the presence of a nonionic surfactant composed of a compound having an acetylenic linkage thereby obtaining an intermediate milled product, and (b) further dry-milling a mixture of the intermediate milled product and a water-soluble resin.

Abstract: Hybrid pigments of diketopyrrolo[3,4-c]pyrrole pigments and pigments bearing “acid” hydrogens like —NH, —OH or —CONH— groups, a process for the manufacturing of the hybrid diketopyrrolo[3,4-c]pyrrole pigments with pigments bearing “acid” hydrogens like —NH, — OH or —CONH— groups and their use as a pigment.

Abstract: A process is disclosed for the direct preparation of pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles of the formula (I) wherein each of R1 and R2 independently of the other is an isocyclic or heterocyclic aromatic radical, which process comprises heating an appropriate molar ratio of a disuccinate with a nitrile of the formula (II) R1—CN  (II) or of the formula (III) R2—CN  (III) or with mixtures of said nitrites, in an organic solvent and in the presence of a strong base and an effective amount of a selected particle growth inhibitor of formula (IV)-(X), and then obtaining the compound of formula (I) from the reaction product by protolysis. The process yields pigmentary 1,4-diketopyrrolo-[3,4-c]pyrroles directly, i.e., without the need for additional particle-size reducing aftertreatments. Also disclosed is a composition comprising a pigmentary 1,4-diketopyrrolo-[3,4-c]pyrrole and the particle growth inhibitor.

Abstract: A rheology-modified ink includes (1) an ink carrier, which is either aqueous-based or solvent-based, (2) an organic pigment, which is preferably an azo pigment of the type generally used with an aqueous-based ink carrier, and (3) a flow-modifier, which is a metal salt of either an aromatic carboxylic acid or an aromatic hydroxy carboxylic acid. Addition of the flow-modifier (also called a rheology-modifier) improves the dispersion of pigment within the aqueous-based carrier thereby improving the flow characteristic of the ink. Also disclosed is a pigment including a flow-modifier and a rheology-modified paint.

Abstract: The invention provides a process for aftertreating organic pigments by causing the ground or unground crude organic pigment and liquid or supercritical carbon dioxide to act on one another.

Abstract: A pigment dispersion comprising pigment, an aqueous carrier selected from water and a mixture of water and at least one organic solvent, and a pigment dispersant is described. The pigment dispersant has core and arm star-type architecture, and is prepared by controlled radical polymerization, e.g., atom transfer radical polymerization, using (i) arm-core, (ii) arm-core-arm, (iii) core-arm, or (iv) concurrent core and arm methods. The arms of the pigment dispersant each have hydrophobic and hydrophilic polymeric chain segments.

Abstract: A new gamma-I type quinacridone pigment characterized by C.I.E color space values in masstone, and a process for its preparation is disclosed. The new gamma quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics.

Abstract: Pigment concentrates comprising a pigment, a liquid carrier medium and a diol alkoxylate of the general formulae (I), (II) and/or (III) are described in conjunction with methods of preparing the same.

Abstract: A process for preparing an unsubstituted or substituted quinacridone of the formula or a solid solution of quinacridones of the formula (I), wherein X and Y are independently 1 or 2 substituents selected from hydrogen, fluorine, chlorine, C1-C3alkyl, C1-C3alkoxy and COOR wherein R is hydrogen or C1-C10alkyl in which a salt of a corresponding 6,13-dihydroquinacridone of formula II  having the same substitutions as the desired quinacridone of formula I, or a mixture of corresponding 6,13-dihydroquinacridones of formula II, is oxidized with an oxygen containing gas in the presence of an aqueous base and a catalytically effective amount of an oxidation catalyst, characterized in that the oxidation is performed in the presence of an polyglycolic reaction medium of formula R1—O—[(CH2)m—(CHR1′)n—O]x—O—R1″  (III).

Abstract: Pigment concentrates comprising a pigment, a liquid carrier medium and a dimerdiolalkoxylate, wherein a dimer portion of the dimerdiolalkoxylate comprises from about 36 to about 44 carbon atoms, and wherein the at least one dimerdiolalkoxylate has from about 1 to about 200 moles of alkylene oxide per mole of dimerdiol, are described in conjunction with methods of preparing the same.

Abstract: Pigment particle growth and/or crystal phase directors of the following formula:

Abstract: A universal tinting concentrate for both solvent- and water-based paints and coatings. The universal tinting concentrate is a composition which includes a colorant component, such as pigment, colorant, tinting agent and/or metal effect agent; a pigment dispersant including an organic acid containing no more an 70 carbon atoms; and a pH-neutralizing agent. In one embodiment of the invention, the pigment dispersant is represented by the following structure: where r and s are integers and r+s is 6 to 16; and x and y are integers and x+y is 0 to 19; and Z is H or COOH and Z′ is H or COOH.

Abstract: The present invention relates to a process for pigmenting a porous sintered material comprising boride, carbide, silicide, nitride or phosphide compounds by applying a solution of a soluble pigment derivative to the non-coloured sintered material and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the sintered material's pores, as well as to the new pigmented sintered materials themselves.

Abstract: Pigment preparations in granule form comprising as essential constituents from 50 to 99.5% by weight of at least one inorganic pigment and from 0.5 to 50% by weight of at least one organic pigment are prepared and used for coloring polymeric materials.

Abstract: Preparation of a solid fluorescent composition comprising (1) mixing a host chromophore and an effective amount of a pigment precursor in a solvent, then generating a pigment as guest chromophore in-situ from the pigment precursor, and, subsequently, isolating the mixture of the host and guest chromophores, thereby forming a solid solution, or (2) mixing a polymer as a matrix or a polymer precursor and a pigment precursor in a solvent, if desired in the presence of a chromophore being a host component, then generating a pigment in-situ from the pigment precursor (being the guest component if a host component is present), and, subsequently, isolating the mixture of polymer and pigment, and—if present—the host component, thereby forming a solid solution, wherein in all cases where there is a host component, the absorption spectrum of the pigment (guest chromophore) overlaps with the fluorescence emission spectrum of the host chromophore.

Abstract: Compounds of formula A(B)x  (I), wherein 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, phthalocyanine or diketopyrrolopyrrole series that is bonded to x groups B via one or more hetero atoms, those hetero atoms being selected from the group consisting of N, O and S and forming part of the radical A, each group B independently of any other(s) is hydrogen or a group of the formula  at least one group B being a group of the formula The compounds according to the invention are used in high-molecular-weight organic materials, thermo-, photo- or chemo-sensitive recording materials, light-sensitive negative or positive resist compositions, ink compositions for ink-jet printing and color tapes for thermal transfer printing.

Abstract: Pigment particle growth and/or crystal phase directors of the following formula: (MO3S)m—Q—(CH2—(X)—(Y)n)o wherein: Q represents a pigment moiety; M represents a metal cation, quaternary N cation or H; X is an aromatic group, a cyclo-hetero aliphatic group with at least one 5 atom or 6 atom ring or a hetero aromatic group with at least one 6 atom ring and which is not a phthalimido group; Y is a sulfonic or carboxylic acid or salt thereof; m and n independently from each other represent an integer from 0 to 2.5; and o is an integer from 0.05 to 4.

Abstract: Compounds of formula A(B)x,   (I), wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1.

Abstract: The invention relates to a pigment preparation comprising an organic pigment and 0.2 to 20% by weight, based on the total weight of the pigment preparation, of an ammonium polyphosphate or of an organophosphorus compound.

Abstract: The present invention relates to a process for pigmenting a porous metal oxide by applying a solution of a soluble pigment derivative and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the metal oxide's pores. The invention also relates to pigmented porous metal oxides and materials comprising a solid substrate and a surface layer of a pigmented metal oxide.

Abstract: The invention relates to a process for preparing organic pigment granules with a particle size from 0.5 to 4 mm, which consist of at least 90% by weight of at least one organic pigment with a particle size from 0.

Abstract: Various modified pigment products are described which are preferably capable of being dispersed in a variety of materials such as coatings, inks, toners, films, plastics, polymers, elastomers, and the like. The modified pigments are pigments having attached groups, such as polymeric groups, onto the pigment by means other than adsorption.

Abstract: Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different diketopyrrolopyrrole pigments.

Abstract: The invention relates to a process for preparing organic pigment granules with a particular particle size wherein an organic pigment with a particle size of 0.01 to 10 &mgr;m is mixed with water, a C1-C4alcohol, a C3-C8ketone or a mixture thereof, a binder and ammonia or a C1-C3amine and an emulsifier. This mixture is pressed in a continuously operating apparatus through one or more apertures each having a size of 0.2-5.0 mm2, the apparatus consisting of at least one conveying device and a shaping section comprising the apertures, and being constructed, and operated with a throughput, such that the pressure in its shaping section does not exceed 10 bar. The granulated product is then dried at a temperature of −50 to 200° C. at atmospheric pressure or under reduced pressure. The invention also relates to pigment granules prepared by the process of the invention, with a particle size of 0.5 to 4 mm, wherein the pigment present essentially has a particle size from 0.01 to 10&mgr;m.

Abstract: Linear unsubstituted and substituted quinacridone pigments and quinacridone mixed-crystal pigments are obtained by cyclizing dianilinoterephthalic acid with polyphosphoric acid and then hydrolyzing the ring closure mixture, said mixture being metered into an amount of water or orthophosphoric acid which is such that the final orthophosphoric acid concentration is greater than or equal to 50% by weight in the hedrolysis mixture.

Abstract: 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 solv

Abstract: The present invention relates to pigment dispersants of the formula (I) in which Z1 is a radical of the formula (Ia) —[X—Y]q—[X1—Y1]r—[X2—NH]sH  (Ia) in which X, X1 and X2 are identical or different and are a branched or unbranched C2-C6-alkylene radical or a C5-C7-cycloalkylene radical which can be substituted by from 1 to 4 C1-C4-alkyl radicals, hydroxyl radicals, and/or by from 1 to 2 further C5-C7-cycloalkyl radicals; Y and Y1 are identical or different and are an NH—, —O— or N(C1-C6-alkyl) group, q is a number from 1 to 6, r and s independently of one another are a number from 0 to 6, but are not simultaneously zero; and Z is defined as Z1, Z2 or Z3, where Z2 is a radical of the formula (Ib) —[X—O]q1—[X1—O]qH  (Ib) in which q1 is a number from 0 to 6, and Z3 is hydrogen, hydroxyl, amino or C1-C6-alkyl where the alkyl group can

Abstract: A compound according to the formula (I) wherein R1 and R2 are independently the atoms necessary to complete the formation of a substituted or unsubstituted aromatic or aliphatic carbocyclic or heterocyclic ring system and R3 and R4 have the meaning indicated in claim 1, a new process for the preparation of such a compound, solid solutions and mixtures comprising such a compound and the use of a compound of formula (I) as a pigment.

Abstract: Composite pigments based on nanoparticulate metal oxides modified by crosslinked or uncrosslinked polyalkylenepolyamine and anionic dyes are useful for coloring paints, inks, plastic, paper, wood, leather and textile materials.

Abstract: A colorless or only slightly colored pigment dispersing agent which is feasible as a pigment dispersing agent for pigments having various hues and has the general formula (1), ##STR1## wherein R.sub.1, R.sub.2, X.sub.1, Y.sub.1, Y.sub.2, k and h are as defined in claim 1.

Abstract: A pigment composition comprising pigment and an amido phthalocyanine compound having the general formula I:MPc--(CONR.sup.1 R.sup.2).sub.n Iwherein which Pc is a phthalocyanine ring which is optionally further substituted by up to an average of one chlorine or bromine atom or of a sulphonic acid; M is hydrogen or a metal such as Mg, Al, Ni, Fe, Zn, Pb, Sn or Cu: n is a number ranging from 0.1 to 4.0; R.sup.1 and R.sup.2 are independently selected from hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.12 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.4 -C.sub.6 alkyl amino alkyl, C.sub.2 -C.sub.20 aliphatic amine, C.sub.2 -C.sub.20 aliphatic amine acid salt, C.sub.2 -C.sub.20 alcohol, polyoxyalkylene, polyoxyalkylene amine.

Abstract: Colored pearlescent pigment comprising a pearlescent pigment and a second pigment, characterized in using an adhesion promotor for the mutual adsorbance of the pearlescent pigment and the second pigment, whereby the adhesion promotor is a polymer containing hydroxy groups, a process for its preparation, its use and a colored high molecular weight material.

Abstract: A pigment-based ink composition is provided which employs a pigment precursor that is soluble in a non-aqueous solvent. Preferably, the ink composition is in the form of an aqueous, two-phase system wherein the pigment precursor is solubilized in a high boiling, water-insoluble organic compound. Optionally, a second high boiling compound miscible with both aqueous and organic phases and at least one amphiphile are also present.

Abstract: Thermoplastic, non-water soluble, fluorescent pigments having improved lightfastness are provided which are suitable for coloring a variety of materials including plastics, particularly polyolefins, as well as paints, inks and textiles. The pigments of the present invention referred to herein as the "light fast pigments" demonstrate good color, migration resistance, heat stability, water insolubility, friability and resistance to plateout. The light fast pigments of the present invention have several embodiments, the polyamide embodiment, polyamide ester embodiment and the polyester embodiment. The pigments of the present invention comprises a polymer which comprises polymerized units of fluorescent dye and polymerized monomers such as for example dicarboxylicacids, polycarboxylicacids, diamines, polyamines, alkanolamines, carboxyalcohols, carboxyamines and difunctional alcohols, and/or polyhydric alcohols.

Abstract: A new beta quinacridone pigment characterized by masstone and tint reflection spectra, and a process for its preparation is disclosed. The new beta quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. Also disclosed is a new pigment composition consisting of the inventive beta quinacridone pigment and a carbazole dioxazine pigment.

Abstract: An agglomerated pigment comprises (1) an organic pigment compound, (2) either a sulfonated organic pigment compound obtained by incorporating at least one sulfonic group into the organic pigment compound or a sulfonated organic pigment derivative obtained by incorporating at least one sulfonic group into a derivative of the organic pigment compound, (3) univalent inorganic counter ions bonded to sulfonic groups of component (2), and (4) bivalent or higher inorganic counter ions which are bonded to sulfonic groups of component (2) and wherein each such group has an at least univalent positive charge, the surface of the agglomerated organic pigment as a whole being positively charged. An aqueous pigment dispersion and a water-based ink composition both having excellent storage stability, an agglomerated pigment for use as a raw material for the dispersion, and a process for producing the pigment are provided.

Abstract: This invention relates to a continuous process for the preparation of quinacridone pigments by(a) preparing a reaction mixture by mixing(i) a 2,5-dianilinoterephthalic acid or ester thereof, and(ii) at least about 0.5 parts by weight, per part of component (a)(i), of a dehydrating agent;(b) passing the reaction mixture through a continuous reactor having one or more heated zones at a temperature of about 80.degree. C. to about 300.degree. C. to form a crude quinacridone composition; and(c) mixing a continuous stream of the crude quinacridone composition with a liquid in which the quinacridone pigment is substantially insoluble at a ratio of about 0.5 to about 15 parts by weight of the liquid per part by weight of the crude quinacridone composition.

Abstract: This invention relates to pigment derivatives having the formula ##STR1## wherein Q represents an organic pigment moiety;X is -SO.sub.2 - or -CO-;Alk is C.sub.2 -C.sub.8 alkylene or substituted C.sub.2 -C.sub.8 alkylene;m is an integer of from 1 to 4;n and p are independently integers of from 2 to 6.This invention further relates to the treatment of organic pigments with such pigment derivatives and the use of such treated pigments in coating compositions.

Abstract: A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copolymer. The stir-in pigment composition is in the form of microgranules and is obtainable by spray drying a high solids content aqueous pigment dispersion containing the pigment and the additive. The new pigment composition powders are easily handled, easily wetted and disperse rapidly to form homogeneous aqueous pigment dispersions which are practically free of larger pigment aggregates and can readily be incorporated into aqueous ink and paint systems as stir-in pigments without a dispersion step in a bead mill.

Abstract: The present invention provide a pigment composition and a method for producing same at low cost, which has the same or more excellent quality compared with those produced by a salt milling process which has been commonly used. The pigment composition is produced by dry-milling a pigment in the presence of a surfactant and a water-soluble resin, said surfactant and said water-soluble resin being contained in amounts of 1 to 20% by weight and 2 to 50% by weight respectively based on an amount of the pigment. The pigment composition according to the present invention is readily dispersed into an aqueous system to obtain an aqueous pigment dispersion.

Abstract: Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different diketopyrrolopyrrole pigments.

Abstract: This invention relates to a process for the preparation of quinacridone pigments by(a) exposing a reaction mixture containing(i) 2,5-dianilinoterephthalic acid, 2,5-dianilino-3,6-dihydroterephthalic acid, 2,5-dianilino-3,6-dioxo-1,4-cyclohexadiene-1,4-dicarboxylic acid, and/or derivatives thereof,(ii) about 3 to about 20 parts by weight, per part of component (a)(i), of a dehydrating agent, and(iii) 0 to about 20 parts by weight, per part of component (a)(i), of a pigment additive,to microwave radiation under conditions that raise the bulk temperature of the reaction mixture to no more than about 250.degree. C.

Abstract: Solid solutions comprising quinacridone and 6,13-dihydroquinacridone are prepared by oxidation of a finely divided 6,13-dihydroquinacridone salt in an aqueous basic alcoholic medium using hydrogen peroxide as the oxidant. The solid solutions are useful as red organic high performance pigments.

Abstract: This invention relates to a process for conditioning organic pigments by(a) grinding a crude organic pigment at a temperature of about 0.degree. C. to about 100.degree. C. in the presence of (i) about 1 to about 10 parts by weight, relative to the organic pigment, of an inorganic salt and (ii) about 1 to about 5 parts by weight, relative to the organic pigment, of a liquid in which the organic pigment and salt are substantially insoluble, to form a pigment paste;(b) grinding the pigment paste at a temperature of about 0.degree. C. to about 100.degree. C. in the presence of about 0.05 to about 1 parts by weight, relative to the organic pigment, of a C.sub.8 -C.sub.10 alkanoic acid to form a treated pigment paste;(c) stirring the treated pigment paste with water or water containing an acid and/or an organic liquid to complete the conditioning of the organic pigment; and(d) isolating the conditioned organic pigment.

Abstract: This invention relates to a black-pigmented high molecular weight organic material which is structured from a radiation-sensitive precursor by irradiation, the pigmentation of which material consists of coloured organic pigments, at least one of which is in latent form before irradiation. This material is preferably used as a thin layer which is built up in the form of patterns on a transparent substrate and which can be used, for example, as black matrix for optical colour filters. This invention also relates to a process for the preparation of this material as well as to novel soluble derivatives of yellow disazo condensation pigments which can be used in this process.

Abstract: Mixed crystal pigments of the quinacridone series New quinacridone mixed crystal pigments consisting ofa) from 85 to 99% by weight of unsubstituted .beta.-phase quinacridone of the formula (I) ##STR1## in which R.sup.1 and R.sup.2 are hydrogen atoms and b) from 1 to 15% by weight of one or more substituted quinacridones of the formula (I) in which the substituents R.sup.1 and R.sup.2 are identical or different and are chlorine, bromine or fluorine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or carboxamido groups which can be substituted by C.sub.1 -C.sub.6 -alkyl groups, and R.sup.1 may additionally be hydrogen, are valuable quinacridones in the red-violet range.

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

Abstract: This invention relates to a process for preparing pigment compositions by(a) treating an organic pigment with(1) a sterically hindered and/or bulky primary amine, and(2) a liquid in which the organic pigment is insoluble, and(b) blending the resultant surface-treated pigment composition from step (a) with a pigment derivative of formula (I) ##STR1## wherein Q represents an organic pigment moiety,X is O, S, NR.sup.1, --SO.sub.2 --, --CO--, --Alk--, --Ar--, or combinations thereof,Y is --OR.sup.2, --NR.sup.3 R.sup.4, or Het,Alk is C.sub.1 -C.sub.5 alkylene, C.sub.2 -C.sub.5 alkenylene, or C.sub.4 -C.sub.5 alkadienylene, or substituted derivatives thereof,Ar is arylene,R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl,Het is a heterocycle, andn is 1 to 4.