Hoechst Aktiengesellschaft

Clariant Corporation

Clariant Produkte (deutschland) Gmbh

Rainer Winter

Ulrich Ott

Heinz Bach

Hans Joachim Metz

Joachim Weide

Albert Munkel

Helmut Eckes

Ruediger Jung

Lothar Schlosser

Alexander Sieber

Thomas Heber

Ibrahim Zidan

Rolf Kaiser

Jan H Mast

The invention relates to an azo pigment preparation containing a) at least one azo pigment, b) a resin based on colophonium or modified colophonium with an acid value equal to or higher than 320 mg KOH/g, and c) an ammonium salt of a sulfonated diaryl yellow pigment.

Azo pigment preparations for packaging gravure and flexographic printing

The invention relates to a diaryl yellow pigment preparation, including a) at least one diaryl yellow pigment b) at least one natural resin on the basis of rosin or modified rosin, c) at least one compound of formula (1), and d) an aluminum, zinc, manganese or iron compound in an amount of from 0.1 to 8% by weight (calculated as a metal cation), based on component b). The inventive preparations are suitable for a variety of applications, among them the production of printing inks, especially offset printing inks.

Diaryl yellow pigment preparations

An intaglio ink for printing illustrations comprises C.I. Pigment Yellow 139 and further, preferably chlorine-free organic yellow pigments and has good rheological and coloristic properties which are comparable with those of conventional intaglio printing inks based on C.I. Pigment Yellow 12.

Pigment combinations for inks for the intaglio printing of

Mono- and disazo pigments from the group of the acetoacetarylide, pyrazolone, .beta.-naphthol, 2-hydroxy-3-naphthanilide, 2-hydroxynaphthoic acid, benzimidazolone, diaryl yellow, diarylpyrazolone and disazobenzimidazolone pigments in whose preparation a nonionic surfactant which has a cloud point in aqueous solution was added at the latest immediately prior to the isolation, excluding pigments which have a bis(acetoacetylamino)benzene coupling component, are useful for pigmenting solvent-containing packaging intaglio and flexographic printing inks.

Use of azo pigment preparations for solvent-containing packaging

Process for the bath pigmentation of leather, which comprises dyeing the leather with pigment dispersions which contain a compound of the formula (I) ##STR1## where Ar is benzene or naphthalene,

Bath pigmentation of leather

Aqueous pigment preparations which contain (a) 5 to 80% by weight of a finely-divided inorganic and/or organic pigment, (b) 5 to 80% by weight of an aequeous polyurethane dispersion, (c) 2 to 80% by weight of water and (d) 0 to 50% by weight of an organic solvent.

Growing community of inventors

Oberursel, Germany

Rainer Winter