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US 7,060,807 B2Granted
AOX-free navy and black disperse dyes
AssigneeDyStar Textilfarben GmbH & Co. Deutschland KG
InventorKiyoshi Himeno
Life of this patent
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Abstract
Monoazo dyestuffs of the general formula (1) wherein R1, R2, R3 and n are as defined in claim 1, method for their preparation and a method for colouring a synthetic textile material or fiber blend thereof using such dyestuffs.
Claims9
Monoazo dyestuff or mixture of monoazo dyestuffs of the herein below indicated and defined formula (1)
- wherein
- R1 is C1 to C4-alkyl
- R2 is C1 to C4-alkyloxycarbonyl or cyano
- R3 is methyl or ethyl
- n is 3 or 4.
2 more elements
Dependencies are inferred from the claim text.