Dyestuff containing at least three azo bridges

Details Dyestuff containing at least three azo bridges Dyestuff containing at least three azo bridges

1982-08-20

1984-11-27

Higel, Floyd D.

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

Organic compounds

Azo

8641, 534806, 534810, 534811, 534815, C09B 29045, C09B 3118, C09B 3322, C09B 3524

Patent

active

044850425

ABSTRACT:
Leathers can be advantageously dyed with water-soluble polyazo dyestuffs having, in the form of the free acid, the formula ##STR1## wherein A is a member of the benzene, naphthalene or heterocyclic series;

REFERENCES:
patent: 536431 (1895-03-01), Kahn et al.
patent: 671543 (1901-04-01), Elbel et al.
patent: 1602991 (1926-10-01), Schweitzer et al.
patent: 2094845 (1937-10-01), Krzikalla et al.
patent: 2750375 (1956-06-01), Siebert et al.
patent: 2758109 (1956-08-01), Huss et al.
patent: 2833756 (1958-05-01), Fleischhauer
patent: 2885390 (1959-05-01), Huss et al.
patent: 2885391 (1959-05-01), Huss et al.

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