Bayer Aktiengesellschaft

Bayer Aakatiengesellschaft

Josef W Stawitz

Karl H Schundehutte

Manfred Groll

Walter Hohmann

Karl-Julius Reubke

Novel reactive dyestuffs of the formula ##STR1## having the substituent meanings specified in the description are highly suitable for dyeing and printing hydroxyl- and amido-containing textile materials. They produce very fast dyeings and prints in high yields.

Reactive phthalocyanine dyestuffs

Novel reactive dyestuffs of the formula ##STR1## wherein Pc=radical of a Cu- or Ni-phthalocyanine,

Reactive phthalocyanine dyestuffs containing a fluorochloropyrimidinyl

Process for preparing 4,4'-dibenzoylaminoanthrimidecarbazole, characterized in that 4,4'-diaminodianthrimide is benzoylated and carbazolated, both steps being carried out in one-vessel fashion and the 4,4'-diaminodianthrimide having been obtained by oxidizing a mixture of 1-aminoanthraquinone and 1,4-diaminoanthraquinone in a molar ratio of 0.9:1 to 1.4:1 in 30 to 60% strength H.sub.2 SO.sub.4 and then reducing.

Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole

Process for the preparation of 4,4'-diamino-1,1'-dianthrimides, characterized in that a mixture of an optionally substituted 1,4-diaminoanthraquinone and an optionally substituted 1-aminoanthraquinone in 30-60% strength H.sub.2 SO.sub.4, preferably 40-60% strength H.sub.2 SO.sub.4, is oxidized with peroxomonosulphuric acid or peroxodisulphuric acid, which are preferably employed in the form of the alkali metal or ammonium salts, and the product is then reduced.

Process for the preparation of 4,4'-diamino-1,1'-dianthrimides

Nitrotrianthrimidecarbazoles of the formula ##STR1## in which the NO.sub.2 group is in the .alpha.- or .beta.-position and R.sub.1, r.sub.2 ; R.sub.3 and R.sub.4 designate hydrogen or halogen such as chlorine and bromine, their use as vat dyestuffs, a process for their preparation, and the use, as vat dyestuffs, of compounds which in the formula (I) have an NH.sub.2 group in place of the NO.sub.2 group.

Anthraquinone vat dyestuffs

Process for the preparation of dianthraquinonylamines, characterized in that an optionally substituted nitroanthraquinone is reacted with an optionally substituted aminoanthraquinone in the presence of a basic-reacting alkaline earth metal compound at an elevated temperature.

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Odenthal-Gloebusch, Germany

Josef W Stawitz