Pigment formulations

US4720304A · kind A · utility

Assignee

• BASF Farben Fasern Aktiengesellschaft · DE

Inventors

• Wolfgang Ruff · Stuttgart, DE
• Egon Liedek · Eßlingen, DE
• Gerhard Berger · Stuttgart, DE
• Hans W. Sonneborn · Schwäbisch Gmünd, DE

Key dates

• Filing date: Sep 19, 1985
• Grant date: Jan 19, 1988
• Expiry date: Sep 19, 2005

Classification

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

Abstract

Novel formulations which contain (a) one or more azo pigments based on coupling products of aromatic monoamines or 4,4'-diaminodiphenyls with acetoacetarylides, 1-arylpyrazolones, 3-hydroxy-2-naphthoic acid derivatives or .beta.-naphthol and (b) one or more dyes of the formula EQU Q--(X).sub.n where F is an n-valent radical of a monoazo dye, of a disazo dye or of a quinophthalone, n is 1, 2, 3 or 4 and X is a group of the formula ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.3 is C.sub.1 -C.sub.4 -alkyl or hydroxy-C.sub.2 -C.sub.4 -alkyl and A.sup..crclbar. is one equivalent of an anion. The pigments present in the formulations exhibit improved tinctorial, rheological and printing properties when the formulations are used in printing inks.