Formazan reactive dyes

Details Formazan reactive dyes Formazan reactive dyes

2006-03-21

2006-03-21

Powers, Fiona T. (Department: 1626)

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

Organic compounds

Azo

C008S549000, C106S031480

Reexamination Certificate

active

07015314

ABSTRACT:
This invention relates to novel fibre-reactive formazan dyes of the formula (I):where the symbols are each as defined in claim 1, their preparation, their use for dyeing and printing hydroxyl-containing or nitrogenous organic substrates and substrates dyed or printed with these compounds.

REFERENCES:
patent: 3565881 (1971-02-01), Dussy et al.
patent: 5491221 (1996-02-01), Gisler et al.
patent: 5538518 (1996-07-01), Reddig et al.
patent: 5760215 (1998-06-01), Gisler et al.
patent: 0526792 (1993-02-01), None
patent: 2000893 (1968-09-01), None
patent: 1245022 (1971-09-01), None
Lehr, “Synthesis and Application of Reactive Dyes with Heterocyclic Reactive Systems,” Dyes and Pigments 14, No. 4, pp. 239-263 (1990).

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