Abstract: A composition for printing recording materials comprising a) at least one temporarily water-soluble dye with one SO2CH2COOM group being present in the molecule; b) water or a medium including a mixture of water and an organic solvent, an anhydrous organic solvent or a solid having a low melting point, and c) optionally further additives.

Abstract: The invention relates to colorant preparations that essentially consist of A) 0.1 to 50% by weight, preferably 1 to 30% by weight, of at least one dye from the group of organic pigments. inorganic pigments and organic dyes, B) 0.01 to 80% by weight, preferably 0.1 to 50% by weight, of at least one water-soluble dispersing agent on the basis of an acid-free block polymethacrylic acid ester/block polyethylenoxide copolymer, C) 0 to 30% by weight, preferably 0.1 to 15% by weight, of at least one organic solvent, D) 0 to 20% by weight, preferably 0.1 to 5% by weight, of further conventional additives, E) 10 to 90% by weight, preferably 20 to 60% by weight, of water, each based on the total weight of the colorant preparation (100% by weight). The invention is useful in a variety of colorant preparations including printing inks, especially in ink-jet inks.

Abstract: The invention relates to aqueous colorant preparations containing A) between 0.1 and 50 wt. % of at least one organic and/or inorganic pigment and/or at least one organic colorant. B) between 0.01 and 80 wt. % of at least one naphthol-oxyalkylate sulfopropyl ether, one alkanol-oxyalkylate sulfopropyl ether or one alkylphenol-oxyalkylate sulfopropyl ether. C) between 0 and 30 wt. % of at least one organic solvent. D) between 0 and 20 wt. % of other standard derivatives and E) between 10 and 90 wt % of water, respectively in relation to the total weight (100%) of the colorant preparation. The colorant preparation is used, for example, in printing inks, especially ink jet printing inks.

Abstract: The invention relates to an aqueous pigment preparation containing an organic and/or inorganic pigment dispersed in an acrylate resin solution and a dispersion agent. The preparation is characterised in that the acrylate resin is a copolymer consisting essentially of between 50 and 80 mol % of monoalkenyl aromatic compounds and between 20 and 50 mol % of acrylates, and has an average molar mass Mv of between 1,000 and 50,000 g/mol, and in that the dispersion agent is a compound of formula (I): R—O—(CH2—CH2—O)m—CH2—COOM, wherein R is a C10-C20 alkyl radical or a C10-C20 alkenyl radical, m is a number between 1 and 15, and M is a monovalent cation.

Abstract: The invention is directed to an electrophotographic toner or developer, powder coating, ink jet ink or an electronic media having an azo colorant prepared by conducting the diazotization of aromatic or hetaromatic amines or the azo coupling reaction or the diazotization and the azo coupling reaction in a microreactor.

Abstract: Disclosed are compositions for printing recording materials, especially textile fibre materials, paper and papery substrates and plastic films and plastic transparencies by the inkjet printing process, including

Abstract: The invention relates to a process for the preparation of a purified version of a solvent-soluble dyestuff, comprising the steps of (a) mixing an aqueous presscake of the dyestuff into a water-miscible liquid; and (b) distilling off the water until a water content of 5% by weight maximum is attained; and (c) filtering the dyestuff composition comprising solvent-soluble dyestuff and water-miscible liquid, thereby removing all insoluble contaminants and (d) diluting the dyestuff composition comprising solvent-soluble dyestuff and water-miscible organic solvent in de-ionized water, thereby performing the precipitation of the solvent-soluble dyestuff which is then isolated after filtration and washing with de-ionized water This ink jet grade version has the important advantage of being virtually salt-free and solvent-free.

Abstract: The present invention relates to the use of a CuPc composition consisting essentially of CuPc, e.g., C.I. Pigment Blue 15:3, and a hydroxymethylphthalimido CuPc, as a colorant in electrophotographic toners and developers, powders and powder coating materials, electret materials, inkjet inks, and color filters, wherein the phthalocyanines have a particle morphology with an average length-to-width ratio of more than 2.5:1.

Abstract: The present invention relates to the use of a CuPc composition consisting essentially of CuPc, e.g., C.I. Pigment Blue 15:3, and a hydroxymethylphthalimido CuPc, as a colorant in electrophotographic toners and developers, powders and powder coating materials, electret materials, inkjet inks, and color filters, wherein the phthalocyanines have a particle morphology with an average length-to-width ratio of more than 2.5:1.

Abstract: The present invention relates to the use of a CuPc composition consisting essentially of CuPc, e.g., C.I. Pigment Blue 15:3, and a hydroxymethylphthalimido CuPc, as a colorant in electrophotographic toners and developers, powders and powder coating materials, electret materials, inkjet inks, and color filters, wherein the phthalocyanines have a particle morphology with an average length-to-width ratio of more than 2.5:1.

Abstract: Iron azo complex compounds of the formula (I) are used as charge control agents in electrophotographic toners and developers, in powder coating materials, electret materials and in electrostatic separation processes, in inkjet inks and in color filters.

Abstract: The use of mixed-crystal pigments of the quinacridone series consisting of a) from 85 to 99% by weight of unsubstituted &bgr;-phase quinacridone of the formula (I) in which R1 and R2 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 R1 and R2 are identical or different and are chlorine, bromine or fluorine atoms or C1-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.

Abstract: Use of metal carboxylates and sulfonates as charge control agents Metal carboxylates and metal sulfonates are employed as charge control agents in electrophotographic toners and developers, as charge improvers in powder coating materials and electret materials, and in electrostatic separation processes.

Abstract: Azo pigment of the formula (1) which has a specific surface area of the pigment powder of more than 45 m2/g. The azo pigment is particularly suitable as colorant in electrophotographic toners and devlopers, and in powder coatings and electret materials.

Abstract: The use of an azo pigment of the formula (1) ##STR1## as a colorant in electrophotographic toners, electrophotographic developers, powders and powder coatings, and electret materials, wherein said azo pigment is prepared in the presence of 20 to 50% by weight of an auxiliary selected from the group consisting of a rosin, a salt of a rosin, an abietic acid, and a salt of an abietic acid, wherein said weight is based on the overall weight of the azo pigment including said auxiliary, and wherein the azo pigment has a specific surface area of more than 70 m.sup.2 /g and the azo pigment particles comprising the azo pigment have a length-to-width ratio of on average less than 2.8:1 and a mean particle size d.sub.50 of less than 130 nm.

Abstract: Aluminum azo complex dyes of the formula (I) or (I') ##STR1## are used as charge control agents in electrophotographic toners and developers, powder coating materials, electret materials, color filters, electrostatic separation processes and in inkjet inks.

Abstract: C.I. Pigment Yellow 155 is used as a colorant in electrophotographic toners and developers, powder coating materials, inkjet inks, color filters and electret materials.

Abstract: Cyclosaccharide-boron complexes consisting of 1 to 4 cyclodextrin units and one borate radical of the formula (I): ##STR1## have good charge control properties and lend themselves excellently to dispersion in toner, powder coating and electret binders.

Abstract: Inter-polyelectrolyte complexes (IPECs) are employed as charge control agents and charge improvers in electrophotographic toners and developers, in triboelectrically or electrokinetically sprayable powders and powder coating materials and in electret materials.

Abstract: Azo pigment of the formula (1) ##STR1## which has a specific surface area of the pigment powder of more than 45 m.sup.2 /g.The azo pigment is particularly suitable as colorant in electrophotographic toners and developers, and in powder coatings and electret materials.