Disazo dyes

US4521216A · kind A · utility

Assignee

• BASF SE

Inventors

• Herbert Armbrust · Havelsee, DE
• Johannes P. Dix · Schifferstadt, DE
• Guenter Hansen · Ludwigshafen, DE
• Georg Zeidler · Schifferstadt, DE

Key dates

• Filing date: Mar 23, 1983
• Grant date: Jun 4, 1985
• Expiry date: Mar 23, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the general formula I ##STR1## where R is hydroxyl or unsubstituted or substituted amino, R.sup.1 is hydrogen or C.sub.1 -C.sub.12 -alkyl, X.sup.1 and Y.sup.1 independently of one another are each a carboxylic acid ester or ether group and X.sup.2 and Y.sup.2 independently of one another are each hydrogen, nitro or chlorine, are very useful for coloring petroleum products, solvents and engine fuel additives.