Basf Aktiengesellschaft

Basf Coatings Ag

Erwin Czech

Werner Ostertag

Franz-Ulrich Schmitt

Detlef Schulze-Hagenest

Udo Mayer

Karin H Beck

Walter Kurtz

Helmut Bellaire

Rainer Dyllick-Brenzinger

Guenther Seybold

Horst Belde

Jorg Adel

Dietrich Hoffmann

Horst Bruder

Rolf Boysen

Walter Breitschaft

Ulrike Schlosser

Helmut Riestenpatt

Benno Sens

Christoph Hilger

Ulrike Schl&ouml;sser

Doug R Campbell

Gunther-Rudolf Schr&ouml;der

The present invention relates to triboelectrically chargeable powder coating materials to which benzimidazole-based additives are added.

Triboelectric chargeable coating powder

Aqueous dye preparations useful for producing inks for the inkjet process or writing inks or for producing aqueous alcoholic coating or printing colors comprise, based on the weight of the preparation, from 0.1 to 15% by weight of a dye quantity comprising from 90 to 100% by weight of the dye of the formula I ##STR1## where Kat.sup..sym. is the equivalent of a metal or ammonium ion, from 1 to 40% by weight of carbon black and from 0.1 to 15% by weight of polyethylene glycol.

Aqueous dye preparations

Ballpoint pen pastes comprising at least one phthalocyanine pigment and customary ballpoint pen paste resin and organic solvent as essential components and also, if desired, further customary additives, and the preparation thereof.

Ballpoint pen pastes with phthalocyanine pigments

An amorphous, blue molybdenum oxide having a particle size distibution of from 2 to 100 nm, and which is used advantageously in the preparation of toners for electrophotography.

Finely divided blue molybdenum oxide

A novel carrier which is stable and effective over long cycle times (6.times.10.sup.6 prints), has an iron oxide coating of the formula (FeO).sub.x.Fe.sub.2 O.sub.3 where x=0.1-1 and is obtained by treating steel cores (or balls) with defined small amounts of sulfuric acid of defined concentration, partial oxidation of the cores thus treated and drying at 60.degree.-150.degree. C. at .ltoreq.100 mbar.

Oxide-coated carriers and preparation and use thereof

Carriers for a two-component dry developer are based on a ferrite or iron-containing core which carries a metal oxide layer consisting of reaction products deposited in the gas phase. The carriers according to the invention have abrasion-resistant metal oxide layers which permit electrostatic charging in both directions. By adjusting the thickness of the metal oxide layer, the electrical conductivity can be altered.

Carrier for reprography and production of this carrier

An electrostatic toner consists of a polymer a charge controlling component and an optional color-giving component, wherein the charge controlling agent component comprises one or more compounds of the formula `(I)`, ##STR1## ps where R.sup.1 is chlorine or methyl, R.sup.2 is C.sub.4 -C.sub.22 -alkyl, benzyl or 2-phenylethyl, A.THETA. is an anion, n is 0, 1 or 2, m is 1 or 2 and r is 1 or 2.

Electrostatic toner

Colored single-component toners essentially consist of a magnetic pigment, a binder based on an organic polymer and/or a wax, a dye or colored pigment homogeneously distributed in the binder, and other assistants, the magnetic pigment being iron powder which has a spherical or elliptical shape.

Colored single-component toners and their preparation

Growing community of inventors

Biblis, Germany

Erwin Czech