Back to results
US 2026/0234404 A1Published application
New class of disperse azo dyes, a process for the preparation thereof and the use thereof
AssigneeArchroma (Switzerland) GmbH
InventorsRalf PETERMANN, Urs LAUK, Simon PFISTER, Patric NOWACK, Kevin MURER, Romeo DREIER, Anton ANDREOLI, Kaja Dorota SITKOWSKA
Life of this patent
Estimating the term…
Abstract
The instant invention relates to azo dye of formula (1) to dye mixtures comprising said azo dye, to a process for preparing said azo dyes, to specific uses of said azo dyes and to semi-synthetic or synthetic hydrophobic fiber material, dyed or printed by said azo dyes or said dye mixtures.
Claims13
Azo dye of formula (1)
- wherein R1 denotes hydrogen, halogen, nitro, cyano or C1-C4alkoxy,
- wherein D denotes a radical of formula
- wherein n denotes a number between 1 and 6,
- wherein R2 denotes C1-C12 alkyl chains which are unsubstituted or substituted by one or more C1-C12 alkoxy groups, C1-C12 alkylcarbonyl groups, C7-C25 aryl groups, C7-C25 arylcarbonyl groups, hydroxyl groups, amino groups, cyano groups or halogen atoms or it denotes aryl groups which may be substituted by C1-C12 alkyl groups which are unsubstituted or substituted by one or more C1-C12 alkoxy groups, C1-C12 alkylcarbonyl groups, C7-C25 arylcarbonyl groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —NR2—, —COO— or —OOC—, and
- wherein X denotes hydrogen, nitro, or C1-C6 alkyl.
2 more elements
Process for the preparation of an azo dye of formula (1)
- wherein R1 denotes hydrogen, halogen, nitro, cyano or C1-C4alkoxy,
- wherein D denotes a radical of formula (2)
- wherein n denotes a number between 1 and 6,
- wherein R2 denotes C1-C12 alkyl chains which are unsubstituted or substituted by one or more C1-C12 alkoxy groups, C1-C12 alkylcarbonyl groups, C7-C25 aryl groups, C7-C25 arylcarbonyl groups, hydroxyl groups, amino groups, cyano groups or halogen atoms or it denotes aryl groups which may be substituted by C1-C12 alkyl groups which are unsubstituted or substituted by one or more C1-C12 alkoxy groups, C1-C12 alkylcarbonyl groups, C7-C25 arylcarbonyl groups, hydroxyl groups, amino groups, cyano groups or halogen atoms and which may be interrupted one or more times by the radical —O—, —S—, —NR2—, —COO— or —OOC—, and
- wherein X denotes hydrogen, halogen, nitro, or C1-C6 alkyl,
- the process comprising the diazotization of an amine compound D-NH2 in accordance with a common procedure, and afterwards the coupling reaction of the diazotized amine compound to a BON-Acid (2-hydroxynaphthalene-3-carboxylic acid) coupling component of formula (3)
- wherein R1 is hydrogen, bromine or methoxy.
4 more elements
Dependencies are inferred from the claim text.