Pigment preparations based on monoazo pigments

US5591257A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Joachim Weide · Kelkheim, DE
• R udiger Jung · Kelkheim, DE
• Hans Joachim Metz · Darmstadt, DE

Key dates

• Filing date: Nov 16, 1995
• Grant date: Jan 7, 1997
• Expiry date: Nov 16, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/0041
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pigment preparations comprising PA1 a) at least one monoazo pigment of the formula (I) ##STR1## in which R is identical or different at each occurrence and is C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, chlorine or hydrogen, and PA2 n is a number from 1 to 3, PA1 b) at least one compound of the formula (II) ##STR2## in which R.sup.1 and R.sup.2 are identical or different and are a radical of the formula ##STR3## or a five- to seven-membered, saturated or unsaturated, aliphatic or aromatic heterocyclic ring which includes from 1 to 3 heteroatoms from the group consisting of nitrogen, oxygen and sulfur, PA2 m is the number 1 or 2, and PA2 X is hydrogen, an alkali metal or a stoichiometric equivalent of an alkaline earth metal; and, if desired, PA1 c) further, conventional constituents and additives are particularly suitable for the production of printing inks.