Hoechst Aktiengesellschaft

Clariant Corporation

Clariant Produkte (deutschland) Gmbh

Clariant Finance (bvi) Limited

Hoechst Celanese Corporation

Cassella Aktiengesellschaft

Hiecgst Aktiengesellshat

Clariant Produkte Gmbh

Hans-Tobias Macholdt

Ruediger Baur

Alexander Sieber

Jorg Gitzel

Eduard Michel

Rudiger Baur

Heidemarie Menzel

Erwin Dietz

Claus Godau

Werner Groh

Josef Geisenberger

Andreas Harz

Albrecht Manz

R Udiger Baur

Joachim Weber

Hans Joachim Metz

Hermann Fuchs

Leonhard Unverdorben

Adolf Kroh

Wolfgang Knaup

Uwe Nickel

Frank Wehowsky

Gert Nagl

Detlef Wehle

Jorg Dahringer

Christian Wille

Magali Meder

Gunther Prossel

Wilfried Theiss

Manfred Urban

Reinhard Pedrazzi

Reinhold Deubel

Michael Mueller

Dieter Schnaitmann

Helmut Troster

Siegfried Schiessler

Richard Neuert

Robert Egli

Josef Ritter

Clinton Dale Felton

Ulrike Rohr

Dieter Baumgart

Gerhard Wilker

Holger Jung

Martin Boehmer

Baylor D Gibson

Oliver Eich

Frank Alfter

Manfred Opravil

Peter Boening

Siegfried Schiebler

Franz Schui

Heino Heckmann

James Robert Walden

Rudolf Randler

Norbert Kohl

Thomas Metz

Rüdiger Baur

Steffen Schneider

Dieter Eichenauer

Joachim Zo/ Ller

Ru/ Diger Bauer

Wilfried Theisse

J Org Gitzel

Christian Zeh

Magali Venera

The invention relates to the use of a pigment preparation comprising and

Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks

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

A pigment preparation comprising at least one copper phthalocyanine pigment from the group of C.I. Pigment Blue 15, 15:0, 15:1,15:2, 15:3, 15:4, and 15:6, and at least one pigment dispersant of the formula (I), in which n is a number 1, 2, 3 or 4.

Pigment preparations based on phthalocyanine pigments

A pigment composition containing a disazo pigment of formula (I) and at least one pigment from the group of organic orange, red and violet pigments 

Pigment compositions consisting of a yellow disazo pigment and an organic pigment

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 salt-like structured silicates, in which the cation is NH, HO, an alkali metal, alkaline earth metal, earth metal or transition metal ion or a low molecular weight organic cation or a combination thereof and the anion is an island, cyclic, group, chain, ribbon, laminar or matrix silicate or a combination thereof as charge control agents in electrophotographic toners and developers, in powder coatings, electret materials and in electrostatic separation processes.

Use of salt-like structured silicas as charge control agents

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 characterized 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 Mof between 1,000 and 50,000 g/mol, and in that the dispersion agent is a compound of formula (I): R&#x2014;O&#x2014;(CH-CH&#x2014;O)&#x2014;CH&#x2014;COOM, wherein R is a C-Calkyl radical or a C-Calkenyl radical, m is a number between 1 and 15, and M is a monovalent cation.

Pigments dispersions based on water and acrylate

A composition for printing recording materials comprising a) at least one temporarily water-soluble dye with one SOCHCOOM 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.

Composition for printing recording materials

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

Growing community of inventors

Darmstadt-Eberstadt, Germany

Hans-Tobias Macholdt