Fibre reactive formazan dyes, their preparation and their use
AssigneeHuntsman International LLC
InventorsHubert Jean-Luc Christnacher, Fanny Ehret, Athanassios Tzikas, Rainer Hildebrand, Michael Nicollet
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Abstract
A reactive dye of formula wherein Z1 and Z2 are each independently of the other vinyl or a radical —CH2—CH2—Y and Y is a group removable under alkaline conditions, n is the number 1, 2, 3 or 4, m is the number 2, 3 or 4, q is the number 0 or 1, and the substituents —(SO3H)n, —SO2—Z1 and —NH—CO—(CH2)m—SO2—Z2 are bound to the benzene rings A, B and/or C, said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C1-C4alkyl, C1-C4alkoxy and halogen, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.
Claims15
A reactive dye of formula
- wherein
- Z1 and Z2 are each independently of the other vinyl or a radical —CH2—CH2—Y and Y is a group removable under alkaline conditions,
- n is the number 1, 2, 3 or 4,
- m is the number 2, 3 or 4,
- q is the number 0 or 1, and
- the substituents —(SO3H)n, —SO2—Z1 and —NH—CO—(CH2)m—SO2—Z2 are bound to the benzene rings A, B and/or C, and said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C1-C4 alkyl, C1-C4 alkoxy and halogen.
A process for the preparation of the reactive dye of formula (1), which comprises reacting with one another a compound of formula
- and a compound of formula
- X—CO—(CH2)m—SO2—Z2 (3)
- wherein X is a replaceable group,
- Z1 and Z2 are each independently of the other vinyl or a radical —CH2—CH2—Y and Y is a group removable under alkaline conditions,
- n is the number 1, 2, 3 or 4,
- m is the number 2, 3 or 4,
- q is the number 0 or 1, and
- the substituents —(SO3H)n, —SO2—Z1 and —NH2 are bound to the benzene rings A, B and/or C, and said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C1-C4 alkyl, C1-C4 alkoxy and halogen.
Dependencies are inferred from the claim text.