Black dye mixtures of fiber-reactive azo dyes, methods for...

C - Chemistry – Metallurgy – 09 – B

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C09B 67/22 (2006.01) D06P 1/38 (2006.01)

Patent

CA 2417232

The present invention discloses a dye mixture comprising a disazo dye conforming to the formula (1), a monoazo dye conforming to the formula (2), and monazo dye conforming to the formula (3) in which (1), (2) and (3) are defined as given in claim 1, a method for its preparation and a process for dyeing hydroxy- and/or carboxamido containing fiber material in which an inventive dye mixture is applied to the material.

Cette invention se rapporte à un mélange de colorants comprenant un colorant disazoïque correspondant à la formule (1), un colorant monozoïque correspondant à la formule (2) et un colorant monozoïque correspondant à la formule (3), formules qui sont chacune définies dans la revendication 1, à son procédé de préparation et à une technique de teinture d'un matériau fibreux contenant un hydroxy et/ou un carboxamido, technique selon laquelle on utilise le mélange de colorants selon l'invention.

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