Fibre reactive azo dyes

Details Fibre reactive azo dyes Fibre reactive azo dyes

2005-03-08

2005-03-08

Powers, Fiona T. (Department: 1626)

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

Organic compounds

Azo

C534S618000, C534S634000, C008S549000

Reexamination Certificate

active

06864361

ABSTRACT:
The present invention refers to dyestuffs of the formula Iwhereineach of R1, R2, R3, R4and R5, independently, is H or an optionally substituted alkyl group;each of X1and X2, independently, is a labile atom or group;each of x and y, independently, is 0 or 1 and at least one of x and y is 1;each of a and b is 2 to 5 and when each of x and y is 1, a>b; and z is 0, 1, 2, 3 or 4; andwherein the variables D1and D2are defined as given in claim 1, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.

REFERENCES:
patent: 6248871 (2001-06-01), Ebenezer et al.
patent: 0126265 (1984-11-01), None
patent: 717089 (1996-06-01), None
patent: 9905224 (1999-02-01), None
patent: 0008104 (2000-02-01), None

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