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US 9,938,411 B2Granted
Disperse azo dyes
AssigneeHuntsman International LLC
InventorsPatric Nowack, Urs Lauk, Athanassios Tzikas
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Abstract
The present invention relates to disperse azo dyes based on diazo components having at least one fluorine-containing substituent and an 2,6-diaminosubstituted pyridine coupling component, to a process for the preparation of such dyes and to their use in the dyeing or printing of semi-synthetic and, especially, synthetic hydrophobic fiber materials, more especially textile materials.
Claims5
A dye of formula
- wherein R1 is trifluoromethyl,
- R2 denotes nitro,
- R3 represents hydrogen,
- R4 is phenyl and
- R5 is hydrogen.
2 more elements
Dependencies are inferred from the claim text.