Azo dyes and preparation and use thereof

Details Azo dyes and preparation and use thereof Azo dyes and preparation and use thereof

1993-04-15

1994-12-06

Richter, Johann

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

Organic compounds

Azo

C07C24522

Patent

active

053712013

ABSTRACT:
The invention relates to azo dyes of formula ##STR1## wherein A, B and R.sub.1 are as defined in claim 1. The azo dyes of formula (1) give dyeings of good fastness properties on nitrogen-containing or hydroxy group-containing fibre materials, paper or leather.

REFERENCES:
patent: 3034848 (1962-05-01), King
patent: 3615581 (1971-10-01), Kabitzke
patent: 3623874 (1971-11-01), Froehlich
patent: 3634091 (1972-01-01), Loeflel
patent: 3951944 (1976-04-01), Fuchs
patent: 3960831 (1976-06-01), Nickel
Chem Abstract: PCA72(2):4343y, Disazo dyes for the silver bleach process: Kabitzke et al. (Belg. BE 715411 Nov. 20, 1968). CA 74(2,4): 127563u (1970) Loettel et al.
CA 73 (8): 36607z (1969) Froehlich.
CA102: 54008b (JP59159159), (1984).
CA 102:229508u (JP60023474), (1985).

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