Blue azo dyestuff mixture for strong blue color on hydrophobic fibers

US5071443A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Ulrich Buhler · Alzenau, DE
• Hubert Kruse · Kelkheim, DE
• Manfred Hahnke · Kelkheim, DE
• Margareta Boos · Hattersheim, DE
• Reinhard Kuhn · Frankfurt am Main, DE

Key dates

• Filing date: Mar 5, 1990
• Grant date: Dec 10, 1991
• Expiry date: Mar 5, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S8/924
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The dyestuff mixture contains at least one dyestuff of the formula I ##STR1## and at least one dyestuff of the formula II ##STR2## wherein X and Y denote chlorine or bromine, PA1 R.sup.1 and R.sup.5 denote methyl or ethyl, PA1 R.sup.2 and R.sup.6 denote methyl, ethyl, n-propyl or i-propyl and PA1 R.sup.3, R.sup.4, R.sup.7 and R.sup.8 denote, for example, C.sub.1 - to C.sub.11 -alkyl, in the weight ratio of I:II=(5 to 95):(95 to 5), and is, for example, outstandingly suitable for dyeing synthetic fibres.