Dis-, tris-, and tetrakisazo compounds containing resorcinol, su

Details Dis-, tris-, and tetrakisazo compounds containing resorcinol, su Dis-, tris-, and tetrakisazo compounds containing resorcinol, su

1982-05-21

1985-01-01

Higel, Floyd D.

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

Organic compounds

Azo

534680, 534684, 534685, 534688, C09B 33044, C09B 3322, C09B 3330, C09B 3332

Patent

active

044915438

ABSTRACT:
The present invention discloses substituted phenyl di and trisazo dyes free of reactive groups having two or three sulfonic acid groups, of the general formula: ##STR1## wherein D.sup.1 is ##STR2## Z is hydrogen or D.sup.4 --N.dbd.N--; D.sup.2 is phenyl substituted by hydroxyl, hydroxysulfonyl, chlorine or nitro, or is naphthyl substituted by hydroxy, hydroxysulfonyl or nitro, X, independently of one another, are hydroxyl or amino, D.sup.3 is phenyl which is substituted by hydroxysulfonyl, chlorine, bromine, methyl, methoxy, ethoxy, nitro, phenylamino, sulfophenylamino or nitrosulfophenylamino, or is naphthyl which is substituted by hydroxysulfonyl; D.sup.4 is phenyl which is unsubstituted or substituted by methyl, ethyl, methoxy, ethoxy, chlorine, bromine, nitro, sulfamoyl or hydroxysulfonyl, or is naphthyl which is substituted by hydroxysulfonyl; and R.sup.2 is methyl, ethyl or allyl; the rings B and E may additionally be substituted by methyl, ethyl, methoxy, ethoxy, chlorine, bromine or hydroxysulfonyl, with the proviso that D.sup.2 has a hydroxyl group ortho to the azo bond; or the iron, manganese, cobalt, chromium, nickel or copper complexes of this dye. These compounds, particularly in the form of their metal complexes are suitable for dyeing nitrogen-containing fibers such as wool, and preferably, leather. The present dyes yield very fast brown hues, in particular on retanned leather.

REFERENCES:
patent: 2018234 (1935-10-01), Smith et al.
patent: 2030991 (1936-02-01), Jordan
patent: 2061545 (1936-11-01), Bosshart et al.
patent: 2259735 (1941-10-01), Crossley et al.
patent: 2420630 (1947-05-01), Taylor
patent: 2563091 (1951-08-01), Wright
patent: 2606898 (1952-08-01), Salvin
patent: 3189593 (1965-06-01), Wicki

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