Clariant Corporation

Clariant Finance (bvi) Limited

Clariant Produkte (deutschland) Gmbh

Ruediger Baur

Hans-Tobias Macholdt

Eduard Michel

Josef Geisenberger

Heidemarie Menzel

Ulrike Rohr

Leonhard Unverdorben

Uwe Nickel

Andreas Harz

Christian Wille

Manfred Urban

Andreas Stohr

Dieter Schnaitmann

Josef Ritter

Jesús Pitarch López

Martin Boehmer

Hans-Joachim Metz

Rudolf Randler

Norbert Kohl

Eusebio Ruiz Fernandez

Kristin Richter

The invention relates to a solid pigment preparation containing   

Easily dispersible pigment preparation based on C.I. pigment yellow 155

A dye base sulfate and method of making are described. The dye base sulphate of formula (I) is produced with a residual amine content of less than 2000 ppm, as determined by HPLC, by precipitation of the dye base, made by Friedel-Crafts alkylation, substitution and hydrolysis, as the dye base sulphate is a) taken up in water and subjected to a first steam distillation then filtered and optionally dried at 50 to 180&#xb0; C., b) the pressed cake is treated with water or the optionally dried dye base sulphate is moistened with water, c) subjected to a further steam distillation and filtration and d) dried at 50 to 180&#xb0; C. 

Blue dye with particularly high purity and positive triboelectric control effect

Layered double hydroxide salts as charge control agents in electrophotographic toners and developers, in powder coating materials, electret materials and in electrostatic separation processes of chargeable materials, such as polymers, wherein the double hydroxide salt contains monovalent and/or divalent, and also trivalent, metal cations, and also contains one or more organic anions A of the formula (I)X&#x2014;R&#x2014;Y&#x2003;&#x2003;(1)whereinX is hydroxyl, carboxyl, sulfato or sulfo;Y is carboxyl, sulfato or sulfo, andR is an aliphatic, cycloaliphatic, heterocycloaliphatic, olefinic, cycloolefinic. heterocycloolefinic, aromatic, heteroaromatic, araliphatic or heteroaraliphatic radical having a total of at least 8 carbon atoms which can be substituted by one or several substituents from the group hydroxyl, amino, halogen, C-C-alkyl, C-C-alkoxy, &#x2014;C-C-alkylene-(CO)&#x2014;O&#x2014;(CHCHO)-alkyl,&#x2014;C-C-alkylene-(CO)&#x2014;O&#x2014;(CHHO)-haloalkyl, carboxy, sulfo, nitro or cyano.

Use of salts of layered double hydroxides as charge control agents

A layered double hydroxide salt as a charge control agent in electrophotographic toners and developers, in powder coating materials, electret materials and in electrostatic separation processes of chargeable materials, such as polymers, wherein the double hydroxide salt contains monovalent and/or divalent, and also trivalent, metal cations, and also contains organic anions A of the formulae (I) to (XXX) set forth in the specification.

Use of salts of layered double hydoxides

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.

Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias

The present invention relates to the use of wax-coated pigment granules as colorants in electrophotographic toners and developers, powder coating materials, inkjet inks, electret fibers, and color filters, wherein the coated pigment granules have a particle size of between 0.05 and 5 mm and a wax content of from 1 to 50% by weight, based on the overall weight of the coated pigment granules.

Use of coated pigment granules in electrophotographic toners and developers, powder coatings and inkjet inks

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.

Water-based colorant preparations

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.

Use of improved cyan pigments in inkjet inks

Cyan pigments in electrophotographic toners and developers

Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks

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.

Use of metal carboxylates and sulfonates as charge control agents

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.

Use of aluminum azo complex dyes as charge control agents

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.

Use of pigment yellow 155 in electrophotographic toners and developers,

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.

Growing community of inventors

Eppstein-Niederjosbach, Germany

Ruediger Baur