Navy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dye

US4908041A · kind A · utility

Assignee

• BASF SE

Inventors

• Erwin Hahn · Heidelberg, DE
• Guenter Hansen · Ludwigshafen, DE
• Karl-Heinz Etzbach · Bischofswerda, DE
• Helmut Reichelt · Neustadt, DE
• Ernst Schefczik
• Helmut Degen · Bischofswerda, DE
• Reinhold Krallmann · Bad Dürkheim, DE
• Gerhard Wagenblast · Wachenheim, DE

Key dates

• Filing date: Oct 13, 1988
• Grant date: Mar 13, 1990
• Expiry date: Oct 13, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/922
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Navy and black dye mixtures contain one or more thiophene-azo dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, X and Y each have defined meanings, and one or more dyes F whose absorption maximum is at a wavelength of from 390 to 520 nm, the proportion of thiophene-azo dyes being from 60 to 99% by weight, based on the total weight of thiophene-azo dyes and dyes F in the mixture.