Azo dyes, processes for their preparation and their use

Details Azo dyes, processes for their preparation and their use Azo dyes, processes for their preparation and their use

1996-07-15

1997-07-22

Powers, Fiona T.

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

Organic compounds

Azo

8681, 8924, C09B 31047, D06P 139, D06P 324

Patent

active

056504977

ABSTRACT:
Azo dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 independently of one another are hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen,

REFERENCES:
patent: 3594363 (1971-07-01), Stingl
patent: 4384870 (1983-05-01), Benguerel
patent: 4539009 (1985-09-01), Nickel et al.
patent: 4749784 (1988-06-01), Feeman et al.
patent: 5092905 (1992-03-01), Dore 8924

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