Cassella Aktiengesellschaft

Hoechst Aktiengesellschaft

Margareta Boos

Reinhard Kuhn

Ulrich Buhler

Hubert Kruse

Klaus Hofmann

Rudolf Binder

Horst Tappe

Manfred Hahnke

Albert Bode

Friedrich Schophoff

Hirotsugu Tsumura

The present invention relates to valuable monoazo dyes of the general formula I ##STR1## in which R is methyl or ethyl,

Monoazo dyes, their preparation and use

The azo dyes of the formula I ##STR1## where X.sup.1 is for example hydrogen or (C.sub.1 to C.sub.6)alkyl,

Red 2,6-dicyanophenylazo dyes and the preparation and use thereof

The present invention relates to a process for the preparation of finished dyeings of high fastness to thermomigration on fibre materials consisting completely or partly of polyester, characterized in that the material is dyed with one or more dyestuffs of the general formula I ##STR1## wherein R denotes linear (C.sub.1 -C.sub.3)-alkyl or (C.sub.3 -C.sub.6)-alkyl which is interrupted by an oxygen atom and

Process for the preparation of finished dyeings which are fast to

Multi-component mixtures of bright red disperse azo dyestuffs

The invention relates to mixtures of monoazo dyes, which are characterized in that they consist of one or more dyes of the general formula I ##STR1## and one or more dyes of the general formula II ##STR2## where R.sup.1 is methyl, ethyl, n-propyl or i-propyl,

Mixtures of monoazo dyes: dicyano-nitrobenzene azo compounds

Monoazo dyestuffs useful for dyeing and printing hydrophobic fibers have the formula ##STR1## in which R.sup.1 denotes alkyl having 1 to 3 carbon atoms, R.sup.2 and R.sup.3 independently of one another denote alkyl having 2 to 5 carbon atoms and R.sup.4 denotes methyl or ethyl.

2-cyano-4,6-dimitro-phenyl monoazo dyestuffs

The present invention relates to a process for the dyeing and printing of blended fabrics made of polyester and natural fibre materials, characterized in that the polyester portion of the blended fabric is dyed and printed using one or more disperse dyes of the general formula I ##STR1## in which R is methyl, ethyl or alkyl having 2 or 3 C atoms, which is substituted by alkoxy having 1 to 3 C atoms, and

Process for the dyeing and printing of blended fabrics made of polyester

The dyestuff mixture contains at least one dyestuff of the formula I ##STR1## and at least one dyestuff of the formula II ##STR2## wherein X and Y denote chlorine or bromine,

Blue azo dyestuff mixture for strong blue color on hydrophobic fibers

Hydrophobic textile materials can be dyed or printed with one or more monoazo dyes of the formula ##STR1## in which R.sup.1 is fluoro, chloro or bromo;

Water-insoluble monoazo dyes, their preparation and use, and mixtures of

A mixture of monoazo dyestuffs which contains one or more dyestuffs of the formula I ##STR1## and one or more dyestuffs of the formula II ##STR2## wherein R.sup.1 and R.sup.2 independently of one another each denote linear or branched alkyl with 1 to 6 carbon atoms, R denotes linear or branched alkyl with 1 to 5 carbon atoms and Hal denotes chloro or bromo, are outstandingly suitable for dyeing and printing hydrophobic materials.

Mixtures of blue disperse monoazo dyestuffs

Synthetic fiber materials are effectively colored by dyeing or printing with a dyestuff mixture containing at least two separate dyestuffs (I) and (II) in a weight ratio of (I):(II) of from (20 to 99):(80 to 1) wherein: (I) is at least one dyestuff of the formula ##STR1## and (II) is at least one dyestuff of the formula ##STR2## in which X and Y are the same or different and each is independently chloro and bromo:

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Hattersheim, Germany

Margareta Boos