Hoechst Aktiengesellschaft

Clariant Finance (bvi) Limited

Clariant Corporation

Lariant Produkte (deutschland) Gmbh

Ruediger Jung

Joachim Weber

Hans Joachim Metz

Martin Ulrich Schmidt

Joachim Weide

Till Borchert

Arpad Acs

Felix Wendelin Grimm

Andreas Wacker

Rainer Winter

Olaf Schupp

Bernd Nestler

Hans-Joachim Metz

Joerg Schueller

Wojciech Nieradzik

Steffen Schneider

Werner Sindermann

The invention relates to a colorant of the formula (2) where M=Ca, Sr or a combination of Ca and Sr.

Phenylpyrazolone colorant

The invention relates to a pigment composition based on P.Y. 191 of the formula (1) containing 0.05 to 30 mol %, based on the sum of P.Y. 191 and a further yellow colorant, of at least one further yellow colorant of the formula (2) and/or of C.I. Pigment Yellow 100 in which R1, R2, R3 and R4 are each independently hydrogen, halogen, &#x2014;CH, &#x2014;NO, or NH&#x2014;R6 where R6 is C-C-alkyl; R5 is methyl or carboxyl, and where the compound of the formula (2) is not C.I. Pigment Yellow 191.

Pigment composition based on C.I. pigment yellow 191

A pigment preparation comprising C.I. Pigment Yellowof formula (I) as base pigment and C.I. Pigment Yellowof formula (II) as pigment dispersant. 

Monoazo pigment preparations based on C.I. Pigment Yellow 74

Crystal polymorphs of a yellow disazo colorant, and their preparation

An ecologically and economically advantageous process for preparing a disazo pigment of the formula (I) or a mixture of said disazo pigments ##STR1## where D.sup.1 and D.sup.2 are identical or different and each is unsubstituted phenyl, phenyl with from 1 to 5 substituents, unsubstituted naphthyl, naphthyl with from 1 to 3 substituents, unsubstituted anthraquinonyl, anthraquinonyl with from 1 to 3 substituents, or a radical of a fused aromatic heterocycle which contains from 1 to 3 identical or different heteroatoms from nitrogen or oxygen and sulfur and is unsubstituted or has from 1 to 3 substituents, R.sup.1 and R.sup.2 are identical or different and each is hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.5 -alkoxycarbonyl, nitro, cyano, phenoxy or trifluoromethyl, by azo coupling, comprises

Single-step process for the preparation of bis-(acetoacetylamino)

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

Growing community of inventors

Kelkheim, Germany

Ruediger Jung