Mixtures of benzisothiazole mono-azo dyes for cellulose acetate

US4464181A · kind A · utility

Assignee

• BASF SE

Inventors

• Helmut Degen · Bischofswerda, DE
• Johannes P. Dix · Schifferstadt, DE
• Norbert Grund · Ludwigshafen, DE
• Guenter Hansen · Ludwigshafen, DE
• Reinhold Krallmann · Bad Dürkheim, DE

Key dates

• Filing date: Jan 11, 1983
• Grant date: Aug 7, 1984
• Expiry date: Jan 11, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S534/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dye mixtures which comprise two or more dyes of the formula ##STR1## ps where X is hydrogen, methyl or chlorine, and R is a radical of the formula OR.sup.1, OCOCH.sub.3, OCOC.sub.2 H.sub.5, R.sup.1 being hydrogen or C.sub.1 -C.sub.4 -alkyl, are very useful for dyeing cellulose esters.