Patent · US Expired

Black dye mixtures of fiber-reactive azo dyes and use thereof for dyeing hydroxy- and/or carboxamido-containing fiber material

US5445654A · kind A · utility

27Cited by

6References

10Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Kurt Hussong · Bad Soden, DE
Werner Russ · Flörsheim, DE
Karl Krieger · Brinkum, DE

Key dates

Filing date	Nov 24, 1993
Grant date	Aug 29, 1995
Priority date	—
Expiry date	Nov 24, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/005
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The disclosed black dye mixtures contain 50 to 95% by weight of one or more disazo dyes of the formula (1) and 5 to 50% by weight of one or more monoazo dyes of the formula (2) ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, identical to or different from each other, are each hydrogen, methyl, ethyl, methoxy, ethoxy, sulfo or carboxy, PA1 Y is in each instance independently of the others vinyl, .beta.-chloroethyl, .beta.thiosulfatoethyl or .beta.-sulfatoethyl, and PA1 M is hydrogen or an alkali metal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.