Fibre reactive azo dyes

Details Fibre reactive azo dyes Fibre reactive azo dyes

C - Chemistry, Metallurgy

09

B

C09B 62/04 (2006.01) C09B 56/00 (2006.01) C09B 62/006 (2006.01) C09B 62/08 (2006.01) C09B 62/09 (2006.01) C09B 67/24 (2006.01) D06P 1/18 (2006.01)

Patent

CA 2434825

The present invention refers to dyestuffs of the formula I (see formula I) wherein each of R1, R2, R3, R4 and R5, independently, is H or an optionally substituted alkyl group; each of X1 and 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; and wherein the variables D1 and D2 are defined as given in claim 1, processes far their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.

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