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

Year	Description
1993	Invention patented by Kurt Hussong, Werner H. Russ, and Karl Krieger on November 23th, 1993. 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, Y is in each instance independently of the others vinyl, .beta.-chloroethyl, .beta.thiosulfatoethyl or .beta.-sulfatoethyl, and M is hydrogen or an alkali metal.
1999	Invention patented by Joachim Steckelberg, Werner Hubert Russ, Christian Schumacher, and Ron Pedemonte on March 8th, 1999. Abstract: The present invention comprises a dye mixture comprising one or more, such as one, two or three, disazo dyes conforming to the general formula (1), one or more, such as one, two or three, monoazo dyes conforming to the general formula (2), and one or more, such as one, two or three dyes of the general formulae (3) and (4) wherein the formulae (1) to (4) are defined as given in claim 1, a method for its preparation and a process for dyeing hydroxy- and/or carboxamido containing fiber material in which a inventive dye is applied to the material.
Source: selected by the editor from original sources.

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