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US 6,191,265 B1Granted
Thermomigrationfast azo dyes
AssigneeDyStar Textilfarben GmbH & Co. Deutschland KG
InventorRainer Hamprecht
Life of this patent
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Abstract
Azo dyes of the formula wherein the substituents are each as defined in the description, are useful for dyeing and printing synthetic textile materials.
Claims14
A dye of the formula:
- wherein
- D is hetaryl or a radical of the formula (II)
- wherein
- X1 and X5 are independently is H, F, Cl, Br, —NO2, —CN, —CO2B, —OH, —CHO or —CO—B,
- X2 and X4 are independently H, Cl, Br, NO2, or B,
- X3 is H, Cl, Br, —NO2, —CN, —SO2B, —CO2B, B or —CH═O,
- A is —CO— or —SO2—,
- B is optionally substituted C1-C4-alkyl,
- R1 and R2 are independently optionally OH— or C1-C4-alkoxy-substituted C1-C4-alkyl, and
- R3 and R4 are independently H or CH3,
- with the proviso that A is SO2 when D is a 6-nitrobenzothiazolyl radical.
8 more elements
A dye of the formula:
- wherein
- D is a radical of the formulae (IIIa) to (IIIf)
- wherein
- X1 to X5 are independently H, F, Cl, Br, —NO2, —CN, —SO2—B, —CO2—B, —OH, —CHO or —CO—B,
- X6 is H, B, Cl, Br, —SB or —SO2B,
- X7 is CN, —CO2B or —CO—B, and
- B is optionally swbstituted C1-C4-alkyl.
4 more elements
A compound of the formula
- wherein
- B is optionally substituted C1-C1-alkyl,
- R1 and R2 are independently optionally OH— or C1-C4-alkoxy-substituted C1-C4 alkyl,
- R3 and R4 are independently H or CH3, and
- A is SO2.
2 more elements
A dye of the formula:
- wherein
- D is hetaryl or a radical of the formula (II)
- wherein
- X1 and X5 are independently is H, F, Cl, Br, —NO2, —CN, —CO2B, —OH, —CHO or —CO—B,
- X2 and X4 are independently H, Cl, Br, NO2 or B,
- X3 is H, Cl, Br, —NO2, —CN, —CO2B, B or —CH═O,
- A is —CO— or —SO2—,
- B is optionally substituted C1-C4-alkyl,
- R1 and R2 are independently optionally OH— or C1-C4-alkoxy-substituted C1-C4-alkyl, and
- R3 and R4are independently H or CH3,
- with the proviso that A is SO2 when D is a 6-nitrobenzothiazolyl radical.
8 more elements
Dependencies are inferred from the claim text.