Water-soluble monoazopyrazolone dyestuffs having fiber reactive groups of the vinylsulfone series

US4960872A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Ludwig Schlafer
• Gunther Schwaiger · Frankfurt, DE
• Werner Russ · Flörsheim, DE

Key dates

• Filing date: Feb 3, 1988
• Grant date: Oct 2, 1990
• Expiry date: Feb 3, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B62/51
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Water-soluble monoazo compounds corresponding to the following general formula (1) which have valuable fiber-reactive dyestuff properties and which dye materials, in particular cellulose fibers, containing carboxamide and/or hydroxy groups in fast, yellow shades. ##STR1## in which the symbols have the following meanings: D is a benzene ring or a radical of the formula ##STR2## R.sup.1 and R.sup.3, independently of one another, are both hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine, bromine, carboxy or sulfo, PA0 R.sup.2 and R.sup.4, independently of one another, are each hydrogen, methyl, ethyl, methoxy, ethoxy, chlorine or bromine, PA0 R is carboxy or lower carboalkoxy, and PA0 X and Y, independently of one another, are each .beta.-thiosulfatoethyl or .beta.-sulfatoethyl or vinyl, but, in the event that x and/or Y is vinyl, the radicals R.sup.1 and/or R.sup.2 are necessarily sulfo.