2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene

Details 2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene 2:1 Metal complexes of 2,2',4'-trihydroxy-3,5-dinitroazobenzene

1973-11-28

1976-08-17

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260148, 260151, 260206, 260576, C09B 4522, C09B 4532, D06P 110, D06P 300

Patent

active

039753697

ABSTRACT:
Dyes of the formula ##SPC1##
Wherein
Each of R, R.sub.1, R.sub.2 and R.sub.3 is independently hydrogen, halo, nitro, unsubstituted or substituted alkyl or alkoxy, carboxy or sulfo,
R.sub.4 is a diazo component radical, and Me is a metal atom,
Are useful for dyeing and printing of leather. They exhaust well on leathers of low affinity and give level dyeings. The dyeings exhibit good fastness to light, water, washing, perspiration, ironing and formaldehyde.

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