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US 8,088,182 B2Granted
Azo dyes, a process for the preparation thereof and the use thereof
AssigneeHuntsman International LLC
InventorsRalf Petermann, Christian Suppiger, Urs Lauk
Life of this patent
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Abstract
The present invention relates to dyes of formula wherein D, R1, R2, R3, R4 and n are defined as in the claims, to the process for the preparation thereof and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydrophobic textile materials, more especially textile materials.
Claims9
A dye of formula
- wherein R1 and R2 are each independently of the other hydrogen, vinyl, allyl or C1-C6 alkyl which is unsubstituted or substituted by cyano, carboxy, hydroxy, C1-C6 alkoxy or C6-C24 aryl,
- R3 is hydrogen, C1-C6 alkyl or C6-C24 aryl,
- R4 is hydrogen, C1-C6 alkyl 2-Cyano-C1-C6 alkyl, 2-Alkoxy-C1-C6 alkyl, 2-Oxo-C1-C6 alkyl or C6-C24 aryl,
- n is 0, 1 or 2, and
- D denotes a radical of formula (3), (4), or (6)
- wherein
- R6 and R7 are each independently of the other hydrogen, nitro, cyano or halogen,
- R8 and R9 are each independently of the other hydrogen, nitro, cyano or halogen,
- R14 represents nitro, cyano or halogen, and
- R15 is C1-C6 alkyl.
7 more elements
Dependencies are inferred from the claim text.