Azo dyes of the pyridone series useful for flowable printing inks

US4201710A · kind A · utility

Assignee

• BASF SE

Inventors

• Walter Kurtz · Bad Dürkheim, DE
• Dieter Horn · Heidelberg, DE
• Walter Ditter · Heidelberg, DE

Key dates

• Filing date: Apr 21, 1978
• Grant date: May 6, 1980
• Expiry date: Apr 21, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/3626
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Azo dyes which in the form of the free bases correspond to the general formula ##STR1## where R.sup.1 is hydrogen, chlorine, bromine, methyl, trifluoromethyl, methoxy, nitro or a radical X, R.sup.2 is hydrogen, chlorine or nitro, R.sup.3 is hydrogen, chlorine, bromine, methyl, methoxy, nitro or a radical X, R.sup.4 is hydrogen or alkyl of 1 to 3 carbon atoms, R.sup.5 is cyano, carbamoyl or acetyl, R.sup.6 is hydrogen, substituted or unsubstituted alkyl or cycloalkyl or a radical X and X is a radical containing an amino group, the molecule containing at least one radical X. The compounds of the formula I are exceptionally useful for improving the flow of pigment-containing printing inks.