Abstract:
Verfahren zur Formierung eines organischen Pigments, bei dem man das Pigment in Gegenwart eines Sulfonatgruppen aufweisenden Kondensationsproduktes aus einer Arylsulfonsäure und mindestens einem aliphatischen Aldehyd mit 1 bis 6 C-Atomen als Kristallisationsmodifikator trocken zerkleinert, das erhaltene Gemisch aus Pigment und Kristallisationsmodifikator in Mineralsäure dispergiert und das Pigment in Gegenwart des Kristallisationsmodifikators in Mineralsäure quellen lässt.
Abstract:
The invention relates to a method for the formation of an organic pigment, wherein the pigment is dissolved or dispersed in an aqueous solvent or a mineral acid and is allowed to crystallize from the solution or dispersion in the presence of a crystallization modifier and is subsequently isolated as a solid, wherein the crystallization modifier is a condensation product of at least one hydroxyaryl sulfonic acid having sulfonate groups and/or at least one hydroxydiaryl sulfone compound and at least one aliphatic aldehyde with 1-6 carbon atoms, optionally containing urea and possibly an alkali sulfite, or a mixture of such condensation products.
Abstract:
The present invention provides a method for preparing conditioned pigments that have smaller diameter and increased color strength, masstone and travel by milling pigment with a dispersant comprising polyurethane. Further, the invention provides the conditioned pigments prepared by the method of the invention and their applications to paints, coatings, inks, plastics, optical devices, color filters and so forth.
Abstract:
The invention relates to solid pigment preparations containing, as essential components, (A) 80 to 99.5 wt. % of a pigment component from at least one organic pigment (A1) and an inorganic pigment (A2) and (B) 0.5 to 20 wt.- % of at least one water-soluble/water-dilutable aldehyde or ketone resin.
Abstract:
Verfahren zur Dispergierung von festen Pigmentzubereitungen in flüssigen Medien, dadurch gekennzeichnet, daß man hierfür einen nach dem Rotor/Stator-Prinzip arbeitenden Hochgeschwindigskeitsmischer einsetzt.
Abstract:
The present invention relates to a modified colorant comprising a colorant having at least one polymer attached or adsorbed thereto. The polymer comprises at least one functional group, and various embodiments of the functional group are disclosed. For each of these embodiments, preferably the functional group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions. Thus, the present invention further relates to an inkjet ink composition comprising a) a liquid vehicle, b) at least one colorant, and c) at least one polymer comprising at least one functional group as described herein.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung von C.I. Pigment Red 254 mit einer mittleren Teilchengröße d 50 von 10 bis 120 nm und einer Halbwertsbreite des Peaks bei 28.3° 2Theta von 0.2 bis 0.7° 2Theta im Röntgenpulverdiffraktogramm mit Cu-K alpha Strahlung, gekennzeichnet durch eine Mahlung eines kristallinen Rohprodukts von C.I. Pigment Red 254 in einer Rührwerkskugelmühle, die mit einer Leistungsdichte von mehr als 1,0 kW pro Liter Mahlraum und einer Rührwerksumfanggeschwindigkeit von mehr als 12 m/s betrieben wird, in einem flüssigen Medium unter Einwirkung von Mahlkörpern.
Abstract:
The present invention involves new compositions comprising an organic pigment or dye complexed with a support via a coordinate covalent bond. The support is characterized has having a Lewis acid or Lewis acid substitute.
Abstract:
A process for the manufacture of a transparent Pigment Yellow 155 or transparent Pigment Yellow 180 is disclosed, said process includes grinding particles of said pigment in the presence of a grinding agent until said particles achieve a surface area of at least about 40 m 2 /g.
Abstract:
The invention pertains to a highly concentrated pigment comprising: from 75 to 95% by weight, preferably from 78 to 95% by weight, most preferred from 80 to 95% by weight, based on the weight of the composition, of a pigment; from 0 to 20% by weight, preferably from 5 to 18% by weight, based on the weight of the composition, of a resin; the total of pigment and resin being from 85 to 98% by weight of the composition; and from 1 to 15% by weight, preferably from 2 to 15% by weight, most preferably from 5 to 15% by weight, based on the weight of the composition, of a C 10 -C 18 alcohol, a liquid hydrocarbon having a boiling point higher than 80°C at 10 5 Pa, or both a C 10 -C 18 alcohol and a liquid hydrocarbon having a boiling point higher than 80°C at 10 5 Pa. 15 Also claimed are a process for its manufacture, comprising dry-milling, blending and kneading the components, and the use of the pigment concentrates for the preparation of a masterbatch, ink, coating, plastic material, toner or colour filter.