Halogenated and sulfonated azodyes

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 62/513 (2006.01) C09B 62/44 (2006.01) D06P 1/38 (2006.01)

Patent

CA 2429812

Novel fibre dyes provide improved resistance to fading when washed by aqueous peroxy wash liquors. The novel dyes have the formula (formula inserted here on hard copy) wherein X is fluorine, chlorine, bromine or iodine; R1 is fluorine, chlorine, bromine, iodine, hydrogen or R3; R3 substituents are the same or different and are selected from SO3H, -NO2, a fibre-reactive group or any moiety linked to the benzene ring by a carbon atom; n is 0, 1, 2 or 3; m is 0, 1, 2 or 3.

L'invention concerne de nouvelles teintures pour fibres présentant une plus grande résistance à la décoloration lorsqu'elles sont lavées à l'aide de liqueurs de lavage peroxy aqueuses. Les nouvelles teintures sont représentées par la formule suivante dans laquelle X est du fluor, du chlore, du brome ou de l'iode; R¿1? est du fluor, du chlore, du brome, de l'iode, de l'hydrogène ou R¿3?; les substituants de R¿3? sont identiques ou différents et sont sélectionnés parmi SO¿3?H, -NO¿2?, un groupe de réaction aux fibres ou un quelconque fragment lié au noyau de benzène par un atome de carbone; n est 0, 1, 2 ou 3; m est 0, 1, 2 ou 3.

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