Vat dye based on flouranthene

Details Vat dye based on flouranthene Vat dye based on flouranthene

1988-11-23

1990-05-15

Sutto, Anton H.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20956

Patent

active

049259547

ABSTRACT:
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.

REFERENCES:
patent: 2219707 (1940-10-01), Kern
patent: 2253789 (1941-08-01), Kern
patent: 2297779 (1942-10-01), Kern
patent: 2862930 (1958-12-01), Caliezi
Helmut et al., "Anthrimides", Chem. Abs., vol. 100 (16), entry 122769m (1984).

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