Basf Aktiengesellschaft

Uwe Nahr

Manfred Patsch

Arno Lange

Klaus Pandl

Helmut Degen

Claus Marschner

Matthias Dust

Gerhard Epple

Joerg L Jessen

Friedrich Wirsing

Helmut Flohr

Volker Walther

Manfred Pastsch

Walter Sieber

Wolfgang Schindler

Condensation products obtainable by condensation of a mixture comprising unsubstituted melamine, substituted melamine and hydroxyphenyl compounds with formaldehyde or formaldehyde donor compounds are dyed in the form of fibers, yarns, threads, wovens, knits or nonwovens in an aqueous liquor with one or more dyes of the class of the azo, anthraquinone, coumarin, methine, azamethine, quinophthalone or nitro dyes.

Dyeing of melamine-formaldehyde condensation products

Mixtures of azo dyes for navy to black hues

Double attachment reactive dyes have the formula ##STR1## where U.sup.1 is C.sub.1 -C.sub.4 -alkyl, phenyl, C.sub.2 -C.sub.10 -alkenyl or the radical ##STR2## where Q.sup.1 and Q.sup.2 are each independently of the other hydrogen or C.sub.1 -C.sub.4 -alkyl and Q.sup.3 is a group which is detachable under alkaline reaction conditions,

Double attachment reactive dyes having alkyl- or alkenylsulfonyl and

A vat dye based on monobromofluoranthene is prepared by a process in which monobromofluoranthene which contains no more than 7% of dibromofluoranthene is reacted with 1-amino-4-benzoylaminoanthraquinone, the reaction product is condensed at from 50.degree. to 70.degree. C. in 83-88% strength sulfuric acid to give the carbazole compound, and the latter is then further brominated to a bromine content of from 20 to 23% by weight. The dyes obtained by the novel process are very useful for dyeing cotton.

Vat dye based on flouranthene

Triphendioxazines are prepared by cyclizing benzoquinone derivatives in oleum in the presence of an organic iodine compound.

Preparation of triphendioxazines

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Dannstadt-Schauernheim, Germany

Uwe Nahr