Water-soluble azo compounds suitable as fibre-reactive dyestuffs

Details Water-soluble azo compounds suitable as fibre-reactive dyestuffs Water-soluble azo compounds suitable as fibre-reactive dyestuffs

1991-11-27

1993-06-01

Lee, Mary C.

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

Organic compounds

Azo

534582, 534641, 534887, 558 29, 558396, 558397, 560250, 560254, 564416, 564421, 564440, 568 30, 568 44, 8527, 8549, C09B 62507, D06P 1382

Patent

active

052161382

ABSTRACT:
There are described water soluble azo compounds conforming to the formula (1)
D--N.dbd.N--K (1)
where D is a radical of the formula (2), (2a) or (2b) ##STR1##
where Y is a substituent which is eliminable by alkali to form a vinyl group, Y.sup.2 has one of the meanings of Y or is hydroxyl, X is chlorine or bromine, and R is hydrogen, lower alkyl, phenyl or halogen, and K is a radical of a singly couplable coupling component which may additionally contain an azo group, or the radical of a doubly couplable coupling component.
The compounds of the formula (1) have fiber-reactive properties and are very highly suitable for use as dyes for dyeing hydroxy- and/or carboxamido-containing material, in particular fiber material, for example cellulose-fiber materials, wool and synthetic polyamide fibers, in strong, fast shades.
There are also described novel starting compounds of the formulae (7), (7a) and (7b) ##STR2##
where Y.sup.2, X and R are each as defined above, x is zero or 2 and W is nitro or amino. The aniline compounds of the formula (7) obtainable from the compounds of the formula (7) where W is nitro by reduction of the nitro group can be used as diazo component for preparing the azo compounds of the formula (1).

REFERENCES:
patent: 2670265 (1954-02-01), Heyna et al.
patent: 3441614 (1969-04-01), Asscher et al.
patent: 5047529 (1991-09-01), Patsch et al.

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