Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diami

Details Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diami Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diami

1973-07-20

1976-06-29

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260146D, 260147, 260154, 260155, 260156, 260158, 260159, 260160, C09B 3546

Patent

active

039667030

ABSTRACT:
Azo dyestuffs of the formula ##SPC1##
Wherein A and B are different radicals of an aromatic coupling component are described. The new dyestuffs are outstandingly suitable for dyeing and printing natural or synthetic fibre materials containing hydroxyl groups and nitrogen like wool, wool-cotton union, silk, high molecular polyamide as well as paper pulp and paper materials and leather to give dyeings havings good fastness properties.

REFERENCES:
patent: 401634 (1889-04-01), Bohn
patent: 625198 (1899-05-01), Phillips et al.
patent: 1697107 (1929-01-01), Glingestein et al.
patent: 1751683 (1930-03-01), Clingestein et al.
patent: 1975411 (1934-10-01), Stusser et al.
patent: 2014484 (1935-09-01), Stusser et al.
patent: 2061126 (1936-11-01), Zahn et al.
patent: 2872440 (1959-02-01), Davies
Cohn "Die Carbazolgruppe" (1919) pp. 151-152, Verlag Georg Thieme

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