Fibre reactive azo dyes

Details Fibre reactive azo dyes Fibre reactive azo dyes

2006-05-02

2006-05-02

Powers, Fiona T. (Department: 1626)

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

Organic compounds

Azo

C534S617000, C534S013000, C534S624000, C008S549000

Reexamination Certificate

active

07038023

ABSTRACT:
The present invention refers to dyestuffs of the formula IwhereinR is an optionally substituted alkyl group;each of R1, R2and R3, independently, is H or an optionally substituted alkyl group;each of X1and X2, independently, is a labile atom or group; andeach of A1and A2, independently, is a chromophoric residue, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.

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Text. Chem. Color, “Analyzing Carpet Samples for Formaldehyde Content”. vol. 21, May 1989, pp. 27-29.

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