摘要:
Verfahren zur Konditionierung von organischen Pigmenten durch Mahlen in Wasser und in Gegenwart eines Mahlhilfsmittels, dadurch gekennzeichnet, dass man als Mahlhilfsmittel eine unsubstituierte oder mit Phenyl substituierte aliphatische oder cycloaliphatische 1,2-Dihydroxyverbindung mit 6 bis 30 C-Atomen verwendet. Das Verfahren liefert im hochmolekularen organischen Material gut dispergierbare Pigmente.
摘要:
A process is disclosed for preparing resin extended pigments containing from 10% to 75% and preferably 25% to 50% by weight, based on the amount of pigment and resin present. The crude pigment and resin are premilled dry, such as in a ball mill, in a manner equivalent to that used to prepare small particle size highly aggregated pigment. Following premilling the pigment and resin are milled in an organic liquid capable of ripening the pigment particles to pigmentary size or simply improving their crystallinity which organic liquid at 30°C can dissolve no more than 5 g/l and preferably no more than 2 g/l of the resin.
摘要:
Subject matter are aqueous, low-VOC/SVOC universal pigment preparations comprising a pigment component, a water-soluble, anionic, surface-active additive from the group of the homo- and copolymers of ethylenically unsaturated monocarboxylic or dicarboxylic acids, which may further comprise, in copolymerized form, vinyl monomers containing no acid function, and of the salts of these homo- and copolymers, the homo- and copolymers being at least partly esterified with a polyether alcohol or a derivative thereof, and comprising a phosphoric or phosphonic ester, and optionally customary additives. The aqueous pigment preparations are suitable for the coloring of inks, paints, and renders, especially in metering systems at the point of sale or in in-plant tinting systems.
摘要:
Subject matter are aqueous, low-VOC/SVOC universal pigment preparations comprising a pigment component; a water-soluble, nonionic, surface-active additive comprising a copolymer formed from a vinyl monomer and from an ethylenically unsaturated monomer selected from the group consisting of monocarboxylic esters, dicarboxylic esters, monocarboxamides, and dicarboxamides, the vinyl monomer and/or the ethylenically unsaturated monomer containing an N-containing group with pigment affinity; a phosphoric or phosphonic ester, and optionally customary additives. The aqueous pigment preparations are suitable for the coloring of inks, paints, and renders, especially in metering systems at the point of sale or in in-plant tinting systems.
摘要:
Novel, nano-structured particles are formed by introducing a selected solid of interest into a structured fluid matrix formed by a dispersion of a small molecule host vessel, such as a native or modified polysaccharide, cavitand, simple sugar, simple polyol or other similarly structured molecule known to be useful as a host vessel, in an acidic medium or other solvent, whereby the particle size of the introduced solid is reduced and or limited by incorporation into the host vessel. The simple, one-step mixing process results in stabilized colloidal dispersions of the nanoparticles useful in a wide variety of applications.
摘要:
A C.I. Pigment Yellow 74 as an insoluble azo pigment is provided. This C.I. Pigment Yellow 74 is crystalline particles. The ratio (26.6°/11.7°) of a diffraction intensity of a peak at 26.6° to a diffraction intensity of a peak at 11.7° in terms of Bragg angle (2θ±0.2°) as measured by powder X-ray diffraction using CuK α-radiation is 0.85 to 1.12, and the average primary particle size is 20 to 130 nm. The use of this C.I. Pigment Yellow 74 as a colorant in a coloring composition enables to provide the coloring composition with excellent dispersibility and good particle size stability and storage stability compared with conventional pigments. The use of this coloring composition enables the formation (recording) of images having excellent clarity and transparency of such high levels that have not been achievable by conventional technologies.
摘要:
A composition comprising particulate solid (typically a pigment or filler), an organic medium (typically the organic medium may be a plastics material or an organic liquid) and a polyacrylic copolymer.
摘要:
An object is to provide an azo pigment having excellent color reproducibility, dispersibility and stability of a pigment dispersion and excellent hue and tinctorial strength. A pigment dispersion including an azo pigment or a tautomer thereof represented by the following Formula (1) and having characteristic X-ray diffraction peaks at Bragg angles (2θ ± 0.2°) of 4.8°, 7.2° and 9.7° in a CuKα characteristic X-ray diffraction.