Hoechst Aktiengesellschaft

Dystar Textilfarben Gmbh & Co. Deutschland Kg

Bengt-Thomas Grobel

Werner H Russ

Dieter Bernd Reuschling

Andreas Von Der Eltz

Wolfgang Raether

Christian Schumacher

Walter Dittmar

Gerhard Lohaus

Heinz Hanel

Uwe Mrotzeck

Karl Krieger

Daniele Negri

Mieke Schaffeld

Dierk Rohrig

Described are dye mixtures comprising dyes containing a coupling component comprising a 1-(chlorotriazinyl)amino-3,6-disulfo-8-naphthol radical, the dye or dyes of the one group of dyes containing an optionally loweralkyl-, loweralkoxy-, halogen, sulfo- and/or carboxy-substituted phenylamino or naphthylamino radical attached to the chlorotriazine radical and possessing a diazo component comprising an optionally loweralkyl-, loweralkoxy-, sulfo- and/or carboxy-substituted phenyl radical which is substituted by a fiber-reactive group of the vinyl sulfone series, and the dye or dyes of the other group of dyes containing attached to the chlorotriazine radical a phenylamino radical whose phenyl is substituted by a fiber-reactive group of the vinyl sulfone series and may be substituted by lower alkyl, lower alkoxy, sulfo and/or carboxy, and possessing a diazo component comprising a radical of benzene or naphthalene which may in each case be optionally substituted by lower alkyl, lower alkoxy, halogen, sulfo and/Qr carboxy. The dye mixtures are useful for preparing a dyeings and prints on hydroxy and/or carboxamido-containing fiber material, for example cotton and viscose fibers, and also wool and synthetic polyamide fiber materials and afford strong fast dyeings having a red hue.

Dye mixture, process for it's preparation and use thereof

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,

Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy- and/or carboxamido-containing fiber material Red-dyeing fiber-reactive phenylazoaminonaphthol dyes, yellow-dyeing fiber-reactive phenylazoaminobenzene dyes, blue-dyeing fiber-reactive copper formazan dyes and navy-dyeing fiber-reactive disazo dyes of the formulae (1) to (5) as claimed and defined in claim 1 are described which are suitable for dyeing hydroxy- and/or carboxamido-containing fiber material, such as cellulose fiber materials, wool and synthetic polyamide fibers individually or together or some of them together or as a mixture in trichromatic dyeing methods. During the dyeing process a definite hue within the color triangle can be obtained and kept constant by adding the individual dye solutions of the individual dyes and/or mixtures of some of the dyes in a controlled manner by means of the ATR measurement technique.

Dye mixtures of fiber-reactive azo dyes and their use for dyeing

A solid or dissolved dye mixture of azo dyes having fiber-reactive groups of the vinyl sulfone series, yielding dyeings of blue color shade, comprising one or more copper formazane dyes of the general formula (1) shown and defined in claim 1, one or more disazo dyes of the general formula (2) shown and defined in claim 1, and one or two monoazo dyes of the general formula (3) shown and defined in claim 1, respectively in the description part of the patent application, which dye mixtures are suitable for dyeing hydroxy- and/or caroboxamido groups containing materials, in particular fiber materials, such as cellulose fibers, for example cotton, wool and synthetic polyamide fibers, also together with other suitable dyes in trichromatic dyeing.

Mixtures of blue-dyeing fiber-reactive dyes and their use for dyeing

1-Hydroxy-2-pyridones of the formula I ##STR1## in which R.sup.1 =an organic radical and

Process for the preparation of 1-hydroxy-2-pyridones

New 1-hydroxy-2-pyridones of the general formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3, which are identical or different, denote hydrogen or lower alkyl having 1-4 carbon atoms, R.sup.1 and R.sup.3 preferably being hydrogen, and R.sup.2 preferably being methyl,

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Niederems, Germany

Bengt-Thomas Grobel