Fiber-reactive azo compounds, processes for their preparation and their use as dyes

US6177552A · kind A · utility

Assignee

• DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

• Uwe Reiher · Hofheim, DE
• Ron Pedemonte · Eppstein, DE

Key dates

• Filing date: Dec 28, 1999
• Grant date: Jan 23, 2001
• Expiry date: Dec 28, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/4411
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Described are fiber-reactive water-soluble azo compounds which contain a group of the general formula (2) ##STR1## as diazo component where R.sup.21 is hydrogen, methyl, ethyl, methoxy, ethoxy or sulfo, R.sup.22 is hydrogen, methyl, ethyl, methoxy, ethoxy or sulfo, R.sup.23 is hydrogen, alkyl of 1 to 4 carbon atoms or phenyl, n is 2 or 3 and the group --SO.sub.2 --Y is a fiber-reactive group of the vinyl sulfone series, and which are capable of dyeing hydroxy- and/or carboxamido-containing material, especially fiber material, such as cellulose fibers, for example cotton, or regenerated cellulose fibers and also wool and synthetic polyamide fibers in high color strength and good fastnesses.