Hoechst Aktiengesellschaft

Dystar Textilfarben Gmbh & Co. Deutschland Kg

Dy Star Textilfarben Gmbh & Co.

Uwe Mrotzeck

Werner H Russ

Stefan Meier

Joachim Eichhorn

Manfred Hahnke

Andreas Schrell

Gunther Schwaiger

Peter Mischke

Marcos Segal

Kurt Hussong

Bengt-Thomas Grobel

Karl Krieger

Manfred Sittig

Erol Ozcan

Alfred Tressel

Christine Feuchtner

Jutta Reiter

Thomas Nauroschat

Reactive dye mixtures comprising one or more dyes of the general formula (I), one or more dyes of the general formula (II) and optionally one or more dyes of the general formula (III) where D, D, D, D, D, R, R*, R**, T, b, f, v, and M are as defined in claim, the dyes of the general formulae (I)-(III) containing at least one fiber-reactive group of the formula &#x2014;SO&#x2014;Z or &#x2014;Z, are prepared and used for dyeing hydroxyl- and/or carboxamido-containing fiber material.

Dye mixtures of fiber-reactive azo dyes, their preparation and use

Reactive dye mixtures comprising one or more dyes of the general formula (I), one or more dyes of the general formula (II) and optionally one or more dyes of the general formula (III) where D, D, D, D, D, R, R*, R**, T, b, f, v, and M are as defined in claim, the dyes of the general formulae (I)-(III) containing at least one fiber-reactive group of the formula &#x2014;SO-Z or -Z, are prepared and used for dyeing hydroxyl- and/or carboxamido-containing fiber material.

Dyestuff mixtures of dyestuffs of the formulae (1) and (2) mentioned and defined below which give strong dyeings with a high color yield and very good build-up properties on material containing hydroxy and/or carboxamide groups, in particular fiber material, such as cellulose fiber material, wool and synthetic polyamide fibers, by the dyeing and printing processes customary for fiber-reactive dyestuffs are described. ##STR1## in which the variables are described in the specification.

Dyestuff mixtures of water-soluble fiber-reactive azo dyestuffs,

A dyeing process comprises continuous dyeing of cellulosic circular knit, which comprises impregnating a rope of said circular knit with an aqueous liquor comprising one or more dissolved and/or dispersed dyes, any necessary fixing alkali and optionally further assistants at a temperature between 20 and 95.degree. C., squeezing off said impregnated rope and subsequently feeding said squeezed-off rope without intermediary drying into an apparatus in which said rope is opened out into a crease-free state and said dye is fixed in an unsaturated steam/air mixture which is at 100 to 160.degree. C. at an autogenous wet temperature of the moist rope of between 50 and 95.degree. C. and a fixing time of at least 20 seconds.

Process and apparatus for continuous dyeing of cellulosic circular knits

Mixtures of fiber-reactive dyes in brilliant orange to red shades comprise one or more disazo dyes of the formula ##STR1## and one or more monoazo dyes of the formula ##STR2## in which: D.sup.1 D.sup.2 and D.sup.3, which are identical to or different from one another, are phenyl or 2-naphthol substituted by vinylsulfone, vinylsulfone, M is hydrogen or an alkali metal, m, n and p are zero or 1, X is chlorine, fluorine, hydroxy, cyanoamino or lower alkylamino, with W being a 2-chloro- or 2-fluoro-s-triazin-6-yl radical which is substituted in position 4 by chlorine, hydroxy, phenoxy, morpholino or by a radical corresponding to one of the definitions of D.sup.1 or by a phenyl radical, which may be substituted by sulfo, carboxy, methyl, ethyl, methoxy, ethoxy and/or hydroxy, or D.sup.3 and W are as further described in the specification.

Mixtures fiber-reactive dyes and use thereof for dyeing fiber

The invention relates to dye compositions for obtaining level dyeings on carboxamido-containing and hydroxyl-containing fiber materials, which dyeings have comparably good light and wetlightfastness properties, the dye compositions containing dioxazine dyes (I) and disazo dyes (II) (one or more than one from IIa to IIf) in a weight ratio of 90:10 to 10:90, preferably 60:40 to 10:90, in particular 40:60 to 15:85.

Dye composition containing a mixture of water-soluble fiber-reactive

Free radical heavy metal ions in water-soluble heavy metal complex dyestuffs are removed from the synthesis solution of the heavy metal complex dyestuff by means of a compound or several of the compounds mentioned below:

Growing community of inventors

Kelkheim, Germany

Uwe Mrotzeck