Single azo based pyridine ketone dye and preparation method and application thereof
A technology of monoazopyridone and dyes, applied in monoazo dyes, azo dyes, dyeing methods, etc., can solve the problems of poor thermal migration fastness and sublimation fastness, and achieve dry cleaning and sun resistance Effects of fastness, color stability, affinity enhancement
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[0034] Example 1
[0035] In this embodiment, a monoazopyridone dye, the structural formula is as shown in formula (I-1):
[0036]
[0037] The preparation method of the monoazopyridone dye is:
[0038] 1) Mix water, methyl cyanoacetate and phenoxyethoxypropylamine with a volume ratio of 1:1:2 at 50-55°C for 2 hours, then add methyl acetoacetate and heat up to 85-90°C for heat preservation and reaction After 12 hours, the coupling component represented by formula (1) is obtained:
[0039]
[0040] 2) Add 33g of nitrosyl sulfuric acid to a 100ml flask, control the temperature at 10-30°C, slowly add 16.8g of 2-nitro-4 methoxyaniline to the flask, add heat preservation reaction to diazonium Complete conversion (a small amount of to the ice water is clear and transparent is qualified), and the diazonium salt is obtained;
[0041] 3) Add 400 mL of water, 80 mL of sodium acetate, and 60 mL of coupling components to a 1000 mL beaker, stir until the dissolution is complete, add ice to control...
Example Embodiment
[0042] Example 2
[0043] In this embodiment, a monoazopyridone dye has the structural formula shown in formula (I-2):
[0044]
[0045] Refer to Example 1 for the preparation method of the monoazopyridone dye.
Example Embodiment
[0046] Example 3
[0047] In this embodiment, a monoazopyridone dye, the structural formula is as shown in formula (I-3):
[0048]
[0049] Refer to Example 1 for the preparation method of the monoazopyridone dye.
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