Anthraquinone vat dyestuffs

Details Anthraquinone vat dyestuffs Anthraquinone vat dyestuffs

1982-12-29

1983-10-04

Ramsuer, Robert W.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C09B 526

Patent

active

044080565

ABSTRACT:
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.

REFERENCES:
patent: 2459424 (1949-01-01), Hauser et al.
patent: 4153608 (1979-05-01), Hohmann

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